98971 + Interview Questions in Primary School in Math

1.	8. Anything which is not straight is called a ____________________9. A curve that does not cross itself. ________________10. Curve in which its endpoints do not meet.___________________11. Curve that does not have an endpoint and is an enclosed figure._________________________
Answer» Answer: Something crooked is not straight, like a TRAIL through the WOODS, or your cousin's unfortunate set of teeth. Crook is a Middle English verb meaning "bend," which comes from the Norse for hook. A curve whose starting point is ALSO its endpoint is called a closed curve. ... A simple closed curve is an even more specific kind of curve: one that is closed, and doesn't intersect itself. A closed curve, has no end points and encloses an area (or a region). It is FORMED by joining the end points of an open curve together. Circles , ellipses are formed from closed CURVES.

1.

8. Anything which is not straight is called a __________9. A curve that does not cross itself. 10. Curve in which its endpoints do not meet._11. Curve that does not have an endpoint and is an enclosed figure._________________

Answer»

Answer:

Something crooked is not straight, like a TRAIL through the WOODS, or your cousin's unfortunate set of teeth. Crook is a Middle English verb meaning "bend," which comes from the Norse for hook.
A curve whose starting point is ALSO its endpoint is called a closed curve. ... A simple closed curve is an even more specific kind of curve: one that is closed, and doesn't intersect itself.
A closed curve, has no end points and encloses an area (or a region). It is FORMED by joining the end points of an open curve together. Circles , ellipses are formed from closed CURVES.

Discussion

2.	Identify the correct statement1) the units of perimeter and area same 2) the shape of figures determine the perimeter 3) if two figures have same area their perimeter are equal 4) if two figures have same perimeter, their area is equal
Answer» ANSWER: FIRST ONE is INCORRECT. second one is *correct.* thind one is incorrect. fourth one again is incorrect.

2.

Identify the correct statement1) the units of perimeter and area same 2) the shape of figures determine the perimeter 3) if two figures have same area their perimeter are equal 4) if two figures have same perimeter, their area is equal

Answer»

ANSWER:

FIRST ONE is INCORRECT.

second one is correct.

thind one is incorrect.

fourth one again is incorrect.

Discussion

3.	Draw triangle ABC using compass ifmAB -5.5cmmBC=6cmmCA = 8cmAlso name it w.r.t sides.
Answer» ANSWER: you can get in DOUBTNUT app Step-by-step explanation: PLEASE THANKS all my answers and mark the BRAINLIEST

3.

Draw triangle ABC using compass ifmAB -5.5cmmBC=6cmmCA = 8cmAlso name it w.r.t sides.

Answer»

ANSWER:

you can get in DOUBTNUT app

Step-by-step explanation:

PLEASE THANKS all my answers and mark the BRAINLIEST

Discussion

4.	Subtract: 2(a^4 - 3a^2) from 2a^2 (a^3-a) – 3a (a^4 + 2a)
Answer» ANSWER: Step-by-step EXPLANATION: $2a^{2}(a^{3}-a)-3a(a^{4}+2a) \\=2a^{5} - 2a^{3} -3a^{5}-6a^{2} \\=-a^{5}-2a^{3}-6a^{2}$

4.

Subtract: 2(a^4 - 3a^2) from 2a^2 (a^3-a) – 3a (a^4 + 2a)

Answer»

ANSWER:

Step-by-step EXPLANATION:

$2a^{2}(a^{3}-a)-3a(a^{4}+2a) \\=2a^{5} - 2a^{3} -3a^{5}-6a^{2} \\=-a^{5}-2a^{3}-6a^{2}$

Discussion

5.	What are the major domains of the Earth??
Answer» Answer: $\mathbf{answer}$ There are four major DOMAINS of the Earth – ithosphere, atmosphere, hydrosphere biosphere. The atmosphere is DIVIDED into four layers BASED on composition, temperature and other properties. The different layers of the atmosphere are troposphere, stratosphere, MESOSPHERE, thermosphere and EXOSPHERE.

5.

What are the major domains of the Earth??

Answer»

Answer:

$\mathbf{answer}$

There are four major DOMAINS of the Earth –

ithosphere,
atmosphere,
hydrosphere
biosphere.

The atmosphere is DIVIDED into four layers BASED on composition, temperature and other properties. The different layers of the atmosphere are troposphere, stratosphere, MESOSPHERE, thermosphere and EXOSPHERE.

Discussion

6.	Find the area of the triangle in which base = 42 cm and hight= 25 cm
Answer» ANSWER: A=525cm² Step-by-step EXPLANATION:

6.

Find the area of the triangle in which base = 42 cm and hight= 25 cm

Answer»

ANSWER:

A=525cm²

Step-by-step EXPLANATION:

Discussion

7.	Please soleve it with proper steps. Take your time and do it but please do it right
Answer» Answer: 81 kg:45 kg 81/45 = 27/15 = 9/5 18 MEN: 10 men 18/10 = 9/5 Hence, LHS = RHS 6:45 6/45 = 2/15 4.8:3.6 4.8/3.6 = 1.2/0.9 = 0.4/0.3 Hence, LHS ≠ RHS

7.

Please soleve it with proper steps. Take your time and do it but please do it right

Answer»

Answer:

81 kg:45 kg

81/45 = 27/15 = 9/5

18 MEN: 10 men

18/10 = 9/5

Hence, LHS = RHS

6:45

6/45 = 2/15

4.8:3.6

4.8/3.6 = 1.2/0.9 = 0.4/0.3

Hence, LHS ≠ RHS

Discussion

8.	two Cross Roads each of width 5 m, run at right angles through the the centre of a rectangular Park of length 80 m and breadth 40 m and parallel to its sides. find area of the roads .also find the the cost of levelling the road at the the rate of 50 per metre square.
Answer» Answer: 3,200 Step-by-step EXPLANATION: because here is MULTIPLE

8.

two Cross Roads each of width 5 m, run at right angles through the the centre of a rectangular Park of length 80 m and breadth 40 m and parallel to its sides. find area of the roads .also find the the cost of levelling the road at the the rate of 50 per metre square.

Answer»

Answer:

3,200

Step-by-step EXPLANATION:

because here is MULTIPLE

Discussion

9.	If x is the average (arithmetic mean) of m and 9, y is the average of 2m and 15, and z is the average of 3m and 18, what is the average of x, y, and z in terms of m?
Answer» ANSWER: GIVEN, X= 2 m+9 y= 2 2m+15 Z= 2 3m+18 AVERAGE of x,y,z= 3 2 m+9 + 2 2m+15 + 2 3m+18 = 3 2 6m+42 =m+7

9.

If x is the average (arithmetic mean) of m and 9, y is the average of 2m and 15, and z is the average of 3m and 18, what is the average of x, y, and z in terms of m?

Answer»

ANSWER:

GIVEN, X=

2

m+9

y=

2

2m+15

Z=

2

3m+18

AVERAGE of x,y,z=

3

2

m+9

+

2

2m+15

+

2

3m+18

=

3

2

6m+42

=m+7

Discussion

10.	P = 3, q = 11Please do Not scam
Answer» Answer: HOPE IT HELPS YOU PLZ MARK ME AS BRIANLIEST PLZ Step-by-step EXPLANATION: PLZ MARK ME AS BRIANLIEST PLZ

10.

P = 3, q = 11Please do Not scam

Answer»

Answer:

HOPE IT HELPS YOU

PLZ MARK ME AS BRIANLIEST PLZ

Step-by-step EXPLANATION:

PLZ MARK ME AS BRIANLIEST PLZ

Discussion

11.	Solve this fast step by step answer will get brilliant one
Answer» ANSWER: 4/2-(x-5)/2 4-x+5/2 9-x/2 is your answer

11.

Solve this fast step by step answer will get brilliant one

Answer»

ANSWER:

4/2-(x-5)/2

4-x+5/2

9-x/2 is your answer

Discussion

12.	If the sum of two consecutive numbers is 21, the lesser one is:A)9 ,B)10,c)11,d)12
Answer» Given The sum of two CONSECUTIVE numbers is 21 . To FIND The lesser number $\sf\huge\bold{\underline{\underline{{Solution}}}}$ Option (B) 10 Let us ASSUME that the first consecutive number be 'x' second consecutive number be 'x+1' According to the question=> The sum of two consecutive numbers is 21 Then, x+(x+1)=21 =>x+x+1=21 =>2x+1=21 =>2x=21-1 =>2x=20 =>x=20÷2 =>x=10 X is 10 & x+1=10+1=11 Compare both numbers :- 10 & 11 We observe that 10 is the lesser number or 11 is the greater number. Check:- =>x+(x+1)=21 =>10+11=21 Extra information=> Consecutive numbers are those number which comes after one another or in SIMPLE words we can SAY they come in a sequential form. e.g, 1+2+3+4+5 are consecutive numbers. if x is 1 , then x+1 is 2 ; x+2 is 3 ;x+3 is 4 and x+4 is 5 and so on.

12.

If the sum of two consecutive numbers is 21, the lesser one is:A)9 ,B)10,c)11,d)12

Answer»

Given

The sum of two CONSECUTIVE numbers is 21 .

To FIND

The lesser number

$\sf\huge\bold{\underline{\underline{{Solution}}}}$

Option (B) 10

Let us ASSUME that the first consecutive number be 'x'

second consecutive number be 'x+1'

According to the question=>

The sum of two consecutive numbers is 21

Then, x+(x+1)=21

=>x+x+1=21

=>2x+1=21

=>2x=21-1

=>2x=20

=>x=20÷2

=>x=10

X is 10 & x+1=10+1=11

Compare both numbers :- 10 & 11

We observe that 10 is the lesser number or 11 is the greater number.

Check:-

=>x+(x+1)=21

=>10+11=21

Extra information=>

Consecutive numbers are those number which comes after one another or in SIMPLE words we can SAY they come in a sequential form.

e.g, 1+2+3+4+5 are consecutive numbers.

if x is 1 , then x+1 is 2 ; x+2 is 3 ;x+3 is 4 and x+4 is 5 and so on.

Discussion

13.	Which number can divided by 1 to 10 all number completely
Answer» Answer: 2520 Step-by-step EXPLANATION: yes this number is DIVIDED by all 1 to 10

13.

Which number can divided by 1 to 10 all number completely

Answer»

Answer:

2520

Step-by-step EXPLANATION:

yes this number is DIVIDED by all 1 to 10

Discussion

14.	Area of parellogram with base 10cm and height 2cm
Answer» Area of PARALLELOGRAM = BASE × Height Area = 10 × 2 Area = 20 cm Hope this HELPS.

14.

Area of parellogram with base 10cm and height 2cm

Answer»

Area of PARALLELOGRAM = BASE × Height

Area = 10 × 2

Area = 20 cm

Hope this HELPS.

Discussion

15.	Guys answer me fast ☺️
Answer» Answer: 5 a) 3 X 10⁻⁸ = 0.00000003 4.5 x 10⁴ = 45000 b) 0.00001275 = 1.275 x 10⁻⁵ 31680000000 = 3.168 x 10¹⁰

15.

Guys answer me fast ☺️

Answer»

Answer:

5 a) 3 X 10⁻⁸ = 0.00000003

4.5 x 10⁴ = 45000

b) 0.00001275 = 1.275 x 10⁻⁵

31680000000 = 3.168 x 10¹⁰

Discussion

16.	If x is the average (arithmetic mean) of m and 9, y is the average of 2m and 15, and z is the average of 3m and 18, what is the average of x, y, and z in terms of m?Answer the following
Answer» ANSWER: HERE IS YOUR ANSWER BRO PLS MAKE MY ANSWER AS BRAINLIEST ❤️❤️❤️❤️

16.

If x is the average (arithmetic mean) of m and 9, y is the average of 2m and 15, and z is the average of 3m and 18, what is the average of x, y, and z in terms of m?Answer the following

Answer»

ANSWER:

HERE IS YOUR ANSWER BRO PLS MAKE MY ANSWER AS BRAINLIEST ❤️❤️❤️❤️

Discussion

17.	Find the area of the triangle in which base = 42 cm and hidht = 25 cm
Answer» Answer: Given, base=42cm height=25cm ∴ AREA of the TRIANGLE = 2 1 ×base×height = 2 1 ×42×25 =1×21×25 =525cm 2

17.

Find the area of the triangle in which base = 42 cm and hidht = 25 cm

Answer»

Answer:

Given,

base=42cm

height=25cm

∴ AREA of the TRIANGLE =

2

1

×base×height

=

2

1

×42×25

=1×21×25

=525cm

2

Discussion

18.	$$q={1/2}nv^2$$The dynamic pressure $q$ generated by a fluid moving with velocity $v$ can be found using the formula above, where $n$ is the constant density of the fluid. An aeronautical engineer users the formula to find the dynamic pressure of a fluid moving with velocity $v$ and the same fluid moving with velocity 1.5$v$. What is the ratio of the dynamic pressure of the faster fluid to the dynamic pressure of the slower fluid?
Answer» ANSWER: q=12nv2. The dynamic pressure q generated by a FLUID moving with velocity v can be found USING the formula above, where n is the constant density of the fluid. ... THEREFORE , the ratio of the dynamic pressure of the faster fluid is qfqs=2.25qsqs=2.25

18.

$$q={1/2}nv^2$$The dynamic pressure $q$ generated by a fluid moving with velocity $v$ can be found using the formula above, where $n$ is the constant density of the fluid. An aeronautical engineer users the formula to find the dynamic pressure of a fluid moving with velocity $v$ and the same fluid moving with velocity 1.5$v$. What is the ratio of the dynamic pressure of the faster fluid to the dynamic pressure of the slower fluid?

Answer»

ANSWER:

q=12nv2. The dynamic pressure q generated by a FLUID moving with velocity v can be found USING the formula above, where n is the constant density of the fluid. ... THEREFORE , the ratio of the dynamic pressure of the faster fluid is qfqs=2.25qsqs=2.25

Discussion

19.	Fill in the box (2×7)×8=___×(7×8)
Answer» Answer: 2 Step-by-step explanation: (2 × 7) × 8 = 2 × (7 × 8) HOPE it HELPS.

19.

Fill in the box (2×7)×8=___×(7×8)

Answer»

Answer:

2

Step-by-step explanation:

(2 × 7) × 8 = 2 × (7 × 8)

HOPE it HELPS.

Discussion

20.	In triangle $ABC$, the measure of $∠B$ is 90°, $BC=16$, and $AC$=20. Triangle $DEF$ is similar to triangle $ABC$, where vertices $D$, $E$, and $F$ correspond to vertices $A$, $B$, and $C$, respectively, and each side of triangle $DEF$ is $1/3$ the length of the corresponding side of triangle $ABC$. What is the value of $sinF$?
Answer»

Discussion

21.	If AB = 10.5 cm and BC = 14 cm then area of triangle is *2 points70 cm square73.5 cm square60 cm square
Answer»

Discussion

22.	In which of the following statements number 3 is used in an ordinal sense?1) all groups have three team members 2) the box contains three pencils 3) I live on the third floor of this building 4) the house has 3 rooms.
Answer» In which of the following statements number 3 is USED in an ordinal sense? Answer: 3) I live on the third floor of this BUILDING. Ordinal Numbers: An ordinal number is a number that tells the position of something. For EXAMPLE, FIRST, second, third, etc. Among the given options, option three is showing the position of 'three' . I live on the third floor of this building. In this sentence, 'third" is an ordinal number. Hence, the required answer is option-3. ) I live on the third floor of this building .

22.

In which of the following statements number 3 is used in an ordinal sense?1) all groups have three team members 2) the box contains three pencils 3) I live on the third floor of this building 4) the house has 3 rooms.

Answer»

In which of the following statements number 3 is USED in an ordinal sense?

Answer: 3) I live on the third floor of this BUILDING.

Ordinal Numbers:

An ordinal number is a number that tells the position of something. For EXAMPLE, FIRST, second, third, etc.

Among the given options, option three is showing the position of 'three' .

I live on the third floor of this building. In this sentence, 'third" is an ordinal number.

Hence, the required answer is option-3. ) I live on the third floor of this building .

Discussion

23.	Anything which is not straight is called a __________
Answer» ANSWER: Crook Step-by-step EXPLANATION: Crook is a Middle ENGLISH Verb, meaning 'bend'

23.

Anything which is not straight is called a __________

Answer»

ANSWER:

Crook

Step-by-step EXPLANATION:

Crook is a Middle ENGLISH Verb, meaning 'bend'

Discussion

24.	6. Take a point on your notebook and draw circle of radii 4 cm, 3 cm and 6.5 cm, each having the samecentre O
Answer» ANSWER: I HAVE GIVEN THE ANSWER SEE IF IT HELPS YOU OR NOT

24.

6. Take a point on your notebook and draw circle of radii 4 cm, 3 cm and 6.5 cm, each having the samecentre O

Answer»

ANSWER:

I HAVE GIVEN THE ANSWER

SEE IF IT HELPS YOU OR NOT

Discussion

25.	पिता की वर्तमान आयु अपने पुत्र की आयु के तीन गुने से 3वर्ष अधिक है। तीन वर्ष बाद, पिता की आयु पुत्र की आयुके दोगुने से 10 वर्ष अधिक होगी, तब पिता तथा पुत्र कीआयु का अनुपातहै
Answer» Answer: 13 GOO gle PE SEARCH kar NA

25.

पिता की वर्तमान आयु अपने पुत्र की आयु के तीन गुने से 3वर्ष अधिक है। तीन वर्ष बाद, पिता की आयु पुत्र की आयुके दोगुने से 10 वर्ष अधिक होगी, तब पिता तथा पुत्र कीआयु का अनुपातहै

Answer»

Answer:

13 GOO gle PE SEARCH kar NA

Discussion

26.	What is meaning of life and everything with explanation if correct brainliest
Answer» Answer: the condition that distinguishes ANIMALS and plants from INORGANIC matter, including the capacity for growth, reproduction, FUNCTIONAL activity, and continual change preceding death. Step-by-step explanation: The actual meaning of life is to fulfill your purpose in life and accomplish your goals. What I mean by this is, everyone has a purpose, of why they are living. NONE of us will be here if we all didn't have a purpose

26.

What is meaning of life and everything with explanation if correct brainliest

Answer»

Answer:

the condition that distinguishes ANIMALS and plants from INORGANIC matter, including the capacity for growth, reproduction, FUNCTIONAL activity, and continual change preceding death.

Step-by-step explanation:

The actual meaning of life is to fulfill your purpose in life and accomplish your goals. What I mean by this is, everyone has a purpose, of why they are living. NONE of us will be here if we all didn't have a purpose

Discussion

27.	38. A rectangular field 90 m long and 60 m broad has roads 3m wide in the middleof it, running at right angles to each other, one along the length and the other alongthe breadth. Find: (a) the area of the roads(b) the cost of constructing the roads at the rate of 110 per m2 please help me out with this
Answer» Step-by-step explanatioWelcome to Gboard CLIPBOARD, any TEXT you COPY will be SAVED here.Welcome to Gboard clipboard, any text you copy will be saved here.Welcome to Gboard clipboard, any text you copy will be saved here.Welcome to Gboard clipboard, any text you copy will be saved here.Welcome to Gboard clipboard, any text you copy will be saved here.Welcome to Gboard clipboard, any text you copy will be saved here.

Discussion

28.	Find the place value of 4 in 423.876.
Answer» It is at HUNDRED's PLACE

28.

Find the place value of 4 in 423.876.

Answer»

It is at HUNDRED's PLACE

Discussion

29.	Find the amount which Ravi will get on Rs.64000, if he gave it for 18 months at 8 1 \ 2 % per annum, interest being compounded half yearly? with step by step explananion fast
Answer» ANSWER: i DONT KNOW sorry. i CANT UNDERSTAND

29.

Find the amount which Ravi will get on Rs.64000, if he gave it for 18 months at 8 1 \ 2 % per annum, interest being compounded half yearly? with step by step explananion fast

Answer»

ANSWER:

i DONT KNOW sorry.

i CANT UNDERSTAND

Discussion

30.	In the given figure, ABCD is a rhombus and angle ACB is equal to 45 degree .find angle ADC
Answer» ANSWER: 90° because in a RHOMBUS all ANGLES are 90° and sum of OPPOSITE angle is 180°

30.

In the given figure, ABCD is a rhombus and angle ACB is equal to 45 degree .find angle ADC

Answer»

ANSWER:

90° because in a RHOMBUS all ANGLES are 90°

and sum of OPPOSITE angle is 180°

Discussion

31.	What is most suitable for teaching children the concept of fractions?
Answer» FRACTION - A fraction is a number that represents a part of a whole. It includes NUMERATOR and Denominator. It is a numerical quantity that is not a whole number. It is a tiny part or PROPORTION of something. For example - 3/4 or 0.75. 3 is known as Numerator and 4 is known as Denominator. CONCEPT OF FRACTION - Teachers should teach their students in a creative way so that students can understand fractions easily. Teachers should give a CLEAR meaning of different types of fractions such as proper fraction, improper fraction, mixed fraction, etc. Teachers should teach children how to simplify the fraction to its lowest forms. For this, children should learn tables thoroughly. Teachers should use different methods or strategies to teach fractions by using PAPER foldings, diagrams, etc.

31.

What is most suitable for teaching children the concept of fractions?

Answer»

FRACTION -

A fraction is a number that represents a part of a whole. It includes NUMERATOR and Denominator. It is a numerical quantity that is not a whole number. It is a tiny part or PROPORTION of something.

For example - 3/4 or 0.75. 3 is known as Numerator and 4 is known as Denominator.

CONCEPT OF FRACTION -

Teachers should teach their students in a creative way so that students can understand fractions easily.

Teachers should give a CLEAR meaning of different types of fractions such as proper fraction, improper fraction, mixed fraction, etc.

Teachers should teach children how to simplify the fraction to its lowest forms. For this, children should learn tables thoroughly.
Teachers should use different methods or strategies to teach fractions by using PAPER foldings, diagrams, etc.

Discussion

32.	2 X square + 3 root 3 X + 3 factorise
Answer» Answer: 12/24 is the CORRECT OPTION

32.

2 X square + 3 root 3 X + 3 factorise

Answer»

Answer:

12/24 is the CORRECT OPTION

Discussion

33.	Simplify: (i) 73 x 42
Answer» Answer=3066 PLEASE I am REQUESTING you to MARK me as BRAINLIEST

Discussion

34.	calculate median and mode of following data 23,45,46,12,34,87,78,12,65,33,19,34,55,67,81,12,56,98,11,49,50,
Answer» 78 is MEDIAN 33 is MODE ★彡[Happψ τo HELP]彡★

34.

calculate median and mode of following data 23,45,46,12,34,87,78,12,65,33,19,34,55,67,81,12,56,98,11,49,50,

Answer»

78 is MEDIAN 33 is MODE

★彡[Happψ τo HELP]彡★

Discussion

35.	Which of the following activities is most likely to develop spatial reasoning among students?1) identifying tessellating figures.2) drawing bar graph to represent data 3) identifying patterns in a number chart 4) solving Sudoku puzzle
Answer» Answer: 3) Identifying PATTERNS in a number chart. Step-by-step explanation: Identifying patterns in a number chart is the activity most LIKELY to DEVELOP spatial reasoning among students. It develops special reasoning in students. It develops good observation skills in students. It develops the searching ABILITY in students for searching the patterns in a number chart.

35.

Which of the following activities is most likely to develop spatial reasoning among students?1) identifying tessellating figures.2) drawing bar graph to represent data 3) identifying patterns in a number chart 4) solving Sudoku puzzle

Answer»

Answer:

3) Identifying PATTERNS in a number chart.

Step-by-step explanation:

Identifying patterns in a number chart is the activity most LIKELY to DEVELOP spatial reasoning among students.

It develops special reasoning in students.
It develops good observation skills in students.
It develops the searching ABILITY in students for searching the patterns in a number chart.

Discussion

36.	Find the answer of 8^2 ÷ 2^3
Answer» Step-by-step explanation: The introduction of HIGH Yielding Varieties (HYV) of seeds and the increased USE of CHEMICAL fertilisers and irrigation are KNOWN collectively as Green Revolution. It provided the increase in production NEEDED to make India self-sufficient in foodgrains, thus improved the agricultural sector in India.

36.

Find the answer of 8^2 ÷ 2^3

Answer»

Step-by-step explanation:

The introduction of HIGH Yielding Varieties (HYV) of seeds and the increased USE of CHEMICAL fertilisers and irrigation are KNOWN collectively as Green Revolution. It provided the increase in production NEEDED to make India self-sufficient in foodgrains, thus improved the agricultural sector in India.

Discussion

37.	Using ruler and compasses construct a quadrilateral PQRS in which PQ = 5cm, QR = 4 cm, RS =4cm ∠Q = 900 and ∠R = 1200
Answer» Step-by-step EXPLANATION: here is your ANSWER mate xd

37.

Using ruler and compasses construct a quadrilateral PQRS in which PQ = 5cm, QR = 4 cm, RS =4cm ∠Q = 900 and ∠R = 1200

Answer»

Step-by-step EXPLANATION:

here is your ANSWER mate

xd

Discussion

38.	A boat travels 30 km upstream in a river in the same period of time as it takes to travel 50 km downstream. If the rate of stream be5km/hr,find the speed of the boat in still water.
Answer» Answer: 20km/hr Step-by-step explanation: let SPEED of boat be x km/hr and TIME taken be t hours now for upstream x-5=30/t -(1) for downstream x+5=50/t -(2) DIVING (1) and (2),we GET (x+5)/(x-5)=30/50 5x+25=3x-15 x=20km/hr

38.

A boat travels 30 km upstream in a river in the same period of time as it takes to travel 50 km downstream. If the rate of stream be5km/hr,find the speed of the boat in still water.

Answer»

Answer:

20km/hr

Step-by-step explanation:

let SPEED of boat be x km/hr

and TIME taken be t hours

now for upstream

x-5=30/t -(1)

for downstream

x+5=50/t -(2)

DIVING (1) and (2),we GET

(x+5)/(x-5)=30/50

5x+25=3x-15

x=20km/hr

Discussion

39.	. ₹ 1 का 10 पैसे कितने प्रतिशत है?
Answer» Answer: 1 RUPEE=100paise. 10% of 1 rupee= 10/100×100= 10paise. Mark me at the BRAINLEAST

39.

. ₹ 1 का 10 पैसे कितने प्रतिशत है?

Answer»

Answer:

1 RUPEE=100paise.

10% of 1 rupee= 10/100×100= 10paise.

Mark me at the BRAINLEAST

Discussion

40.	[(- 49 ) 7 ] ÷ ( -7 )
Answer» Answer: it is 49 Step-by-step explanation: 1) MAKE all NEGATIVE to positive 2) multiply 49 by 7 3) divide 343 by 7 4) the answer: 49

40.

[(- 49 ) 7 ] ÷ ( -7 )

Answer»

Answer:

it is 49

Step-by-step explanation:

1) MAKE all NEGATIVE to positive

2) multiply 49 by 7

3) divide 343 by 7

4) the answer: 49

Discussion

41.	Find the value of t if the value of 3x square + 5x-2t equals to 8 , when x=-1
Answer» ANSWER: the VALUE of t = -5 if the value of 3x^2+5x-2t =8 , when x=-1

41.

Find the value of t if the value of 3x square + 5x-2t equals to 8 , when x=-1

Answer»

ANSWER:

the VALUE of t = -5

if the value of 3x^2+5x-2t =8 , when x=-1

Discussion

42.	Factorise.x ki power 2- 2x- 24
Answer» ANSWER: (X-6)(x+4) Step-by-step EXPLANATION: x²-2x-24 = x²-(6-4)x-24 = x²-6x+4x-24 = x(x-6)+4(x-6) = (x-6)(x+4)

42.

Factorise.x ki power 2- 2x- 24

Answer»

ANSWER:

(X-6)(x+4)

Step-by-step EXPLANATION:

x²-2x-24

= x²-(6-4)x-24

= x²-6x+4x-24

= x(x-6)+4(x-6)

= (x-6)(x+4)

Discussion

43.	Simplify and write in exponential for 13^4*13^4 divided by13^3please answer quickly
Answer» ANSWER: => (13⁴ × 13⁴)/13³ = 13⁵

43.

Simplify and write in exponential for 13^4*13^4 divided by13^3please answer quickly

Answer»

ANSWER:

=> (13⁴ × 13⁴)/13³

= 13⁵

Discussion

44.	Area of a parallelogram is *1 point1/2( base x height)base x heightnone of these
Answer» ANSWER: The answer is ( BASE × height ) Step-by-step EXPLANATION: I HOPE it helps you. Mark me as BRAINLIST.

44.

Area of a parallelogram is *1 point1/2( base x height)base x heightnone of these

Answer»

ANSWER:

The answer is ( BASE × height )

Step-by-step EXPLANATION:

I HOPE it helps you.

Mark me as BRAINLIST.

Discussion

45.	Which of the following statements is not correct about the nature of mathematics?1) primary level mathematics is concrete and does not require abstraction 2) mathematics uses special vocabulary to communicate ideas precisely.3) argumentations skill is important in the construction of mathematical knowledge 4) mathematical concepts are hierarchical in nature.
Answer» Answer: 2) Mathematics uses special vocabulary to communicate ideas precisely. Step-by-step explanation: Mathematics uses special vocabulary to communicate ideas precisely because it is a conceptual and PRACTICAL based SUBJECT which should be UNDERSTAND by MIND properly. Mathematical concepts are not tough really. Primary level MATHS does not requires abstraction.

45.

Which of the following statements is not correct about the nature of mathematics?1) primary level mathematics is concrete and does not require abstraction 2) mathematics uses special vocabulary to communicate ideas precisely.3) argumentations skill is important in the construction of mathematical knowledge 4) mathematical concepts are hierarchical in nature.

Answer»

Answer:

2) Mathematics uses special vocabulary to communicate ideas precisely.

Step-by-step explanation:

Mathematics uses special vocabulary to communicate ideas precisely because it is a conceptual and PRACTICAL based SUBJECT which should be UNDERSTAND by MIND properly.

Mathematical concepts are not tough really.
Primary level MATHS does not requires abstraction.

Discussion

46.	Represent the following rational numbers on the number line : −5/ 8 , −3/ 8 , 1 /8
Answer» Answer: Answer Since in 8 −5 , denominator is 8. We divide line between −1 & 0 into 8 equal PARTS.

46.

Represent the following rational numbers on the number line : −5/ 8 , −3/ 8 , 1 /8

Answer»

Answer:

Answer

Since in

8

−5

, denominator is 8.

We divide line between −1 & 0 into 8 equal PARTS.

Discussion

47.	Karan's father's age is 5 years more than three times Karan's age. Find Karan's age if his father's age is 55 years old.
Answer» SEE the above attachment... This is UR ans... HOPE it's HELPFUL to u...

47.

Karan's father's age is 5 years more than three times Karan's age. Find Karan's age if his father's age is 55 years old.

Answer»

SEE the above attachment...

This is UR ans...

HOPE it's HELPFUL to u...

Discussion

48.	29) Simran took a wire of length 44 cm and bent it into the shape of a circle. Find the area of thecircle formed. The same wire is then bent into the shape of a square. Which figure will enclosemore area and by how much?
Answer» Answer: 154 cm² Step-by-step explanation: Length of wire = 44 cm Perimeter will be same, Therefore, Perimeter of CIRCLE = 44 cm 2πr = 44 r = 44/2π r = 7 cm Area of circle = πr² = 22/7 × (7)² = 154 cm²

48.

29) Simran took a wire of length 44 cm and bent it into the shape of a circle. Find the area of thecircle formed. The same wire is then bent into the shape of a square. Which figure will enclosemore area and by how much?

Answer»

Answer:

154 cm²

Step-by-step explanation:

Length of wire = 44 cm

Perimeter will be same,

Therefore,

Perimeter of CIRCLE = 44 cm

2πr = 44

r = 44/2π

r = 7 cm

Area of circle = πr²

= 22/7 × (7)²

= 154 cm²

Discussion

49.	AniketDatePageSܢܢܘ ܬܠܘ ܠܣܘܫܐ ܓܘܝܩܠܠܙ ܫܬܐ ܘܠܡܓܠܟܫܠܬܠܘnemܠܘ[£&-ܙܬܐ;
Answer» ANSWER: I will datesmmsmdmdmdsmdkdkdkksdkdmrffffffffffffffffgvvvvvvvvvvvvvvvgggggggggggg

49.

AniketDatePageSܢܢܘ ܬܠܘ ܠܣܘܫܐ ܓܘܝܩܠܠܙ ܫܬܐ ܘܠܡܓܠܟܫܠܬܠܘnemܠܘ[£&-ܙܬܐ;

Answer»

ANSWER:

I will datesmmsmdmdmdsmdkdkdkksdkdmrffffffffffffffffgvvvvvvvvvvvvvvvgggggggggggg

Discussion

50.	At what rate per annum will 3600 amount to 4734 in 3 and half years
Answer» TAKEN PUBLIC o'clock KALEB

Discussion

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