332354 + Interview Questions in Secondary School in Math Page 22 InterviewSolution

1051.	Solve and check (5) a. 5(z – 3) = 3(z + 2) b. 3 + 3−8 2 = 4−3 3
Answer» Answer: Given system of linear equations are 2x+3y+3z=5 x−2y+z=−4 3x−y−2z=3. Represent it in matrix form ⎣ ⎢ ⎢ ⎡ 2 1 3 3 −2 −1 3 1 −2 ⎦ ⎥ ⎥ ⎤ ⎣ ⎢ ⎢ ⎡ x y z ⎦ ⎥ ⎥ ⎤ = ⎣ ⎢ ⎢ ⎡ 5 −4 3 ⎦ ⎥ ⎥ ⎤ which is in the form of AX=B A= ⎣ ⎢ ⎢ ⎡ 2 1 3 3 −2 −1 3 1 −2 ⎦ ⎥ ⎥ ⎤ ∣A∣=10+15+15=40  =0 ∴ A −1 exists To find adjoint of A A 11 =5,A 12 =5,A 13 =5 A 21 =3,A 22 =−13,A 23 =11 A 31 =9,A 32 =1,A 33 =−7 ADJ(A)=co-factor ⎣ ⎢ ⎢ ⎡ 5 3 9 5 −13 1 5 11 −7 ⎦ ⎥ ⎥ ⎤ = ⎣ ⎢ ⎢ ⎡ 5 5 5 3 −13 11 9 1 −7 ⎦ ⎥ ⎥ ⎤ A −1 = ∣A∣ 1 Adj(A) = 40 1 ⎣ ⎢ ⎢ ⎡ 5 5 5 3 −13 11 9 1 −7 ⎦ ⎥ ⎥ ⎤ X=A −1 B = 40 1 ⎣ ⎢ ⎢ ⎡ 5 5 5 3 −13 11 9 1 −7 ⎦ ⎥ ⎥ ⎤ ⎣ ⎢ ⎢ ⎡ 5 −4 3 ⎦ ⎥ ⎥ ⎤ X= 40 1 ⎣ ⎢ ⎢ ⎡ 25−12+27 25+52+3 25−44−21 ⎦ ⎥ ⎥ ⎤ X= 40 1 ⎣ ⎢ ⎢ ⎡ 40 80 −40 ⎦ ⎥ ⎥ ⎤ ⎣ ⎢ ⎢ ⎡ x y z ⎦ ⎥ ⎥ ⎤ = ⎣ ⎢ ⎢ ⎡ 1 2 −1 ⎦ ⎥ ⎥ ⎤ Hence, x=1,y=2 and z=−1

1051.

Solve and check (5) a. 5(z – 3) = 3(z + 2) b. 3 + 3−8 2 = 4−3 3

Answer»

Answer:

Given system of linear equations are

2x+3y+3z=5

x−2y+z=−4

3x−y−2z=3.

Represent it in matrix form

⎣

⎢

⎡

2

1

3

−2

−1

3

1

−2

⎦

⎥

⎤

⎣

⎢

⎡

x

y

z

⎦

⎥

⎤

=

⎣

⎢

⎡

5

−4

3

⎦

⎥

⎤

which is in the form of AX=B

A=

⎣

⎢

⎡

2

1

3

−2

−1

3

1

−2

⎦

⎥

⎤

∣A∣=10+15+15=40



=0

∴ A

−1

exists

To find adjoint of A

A

11

=5,A

12

=5,A

13

=5

A

21

=3,A

22

=−13,A

23

=11

A

31

=9,A

32

=1,A

33

=−7

ADJ(A)=co-factor

⎣

⎢

⎡

5

3

9

5

−13

1

5

11

−7

⎦

⎥

⎤

=

⎣

⎢

⎡

5

3

−13

11

9

1

−7

⎦

⎥

⎤

A

−1

=

∣A∣

1

Adj(A)

=

40

1

⎣

⎢

⎡

5

3

−13

11

9

1

−7

⎦

⎥

⎤

X=A

−1

B

=

40

1

⎣

⎢

⎡

5

3

−13

11

9

1

−7

⎦

⎥

⎤

⎣

⎢

⎡

5

−4

3

⎦

⎥

⎤

X=

40

1

⎣

⎢

⎡

25−12+27

25+52+3

25−44−21

⎦

⎥

⎤

X=

40

1

⎣

⎢

⎡

40

80

−40

⎦

⎥

⎤

⎣

⎢

⎡

x

y

z

⎦

⎥

⎤

=

⎣

⎢

⎡

1

2

−1

⎦

⎥

⎤

Hence, x=1,y=2 and z=−1

Discussion

1052.	Find the volume if the radius of the base of the cylinder is 21 meters and the height is 14 meters.Find the volume if the radius of the base of the cylinder is 21 meters and the height is 14 meters?
Answer» Answer: 19404m³ Step-by-step EXPLANATION: Volume=πr²h =(22x21x21x14)/7 =135828/7 =19404m³

1052.

Find the volume if the radius of the base of the cylinder is 21 meters and the height is 14 meters.Find the volume if the radius of the base of the cylinder is 21 meters and the height is 14 meters?

Answer»

Answer:

19404m³

Step-by-step EXPLANATION:

Volume=πr²h

=(22x21x21x14)/7

=135828/7

=19404m³

Discussion

1053.	Find 2 irrational number between 3 and 4pls help really important
Answer» ANSWER: ⇒ Two irrational NUMBERS between 3 and 4 are √11 and √13. Step-by-step explanation: HEY will you be my FRIEND please? my pin id : mongimaple what's your?

1053.

Find 2 irrational number between 3 and 4pls help really important

Answer»

ANSWER:

⇒ Two irrational NUMBERS between 3 and 4 are √11 and √13.

Step-by-step explanation:

HEY will you be my FRIEND please?

my pin id : mongimaple

what's your?

Discussion

1054.	If -6 and 3 are zeroes of the quadratic polynomial x² + (a+1)x + b, then a and b are:-
Answer» $\large\underline{\sf{Solution-}}$ GIVEN that, $\red{\rm :\longmapsto\: - 6 \: and \: 3 \: are \: zeroes \: of \: {x}^{2} + (a + 1)x + b}$ We KNOW that, $\boxed{ \purple{\sf Product\ of\ the\ zeroes=\frac{Constant}{coefficient\ of\ x^{2}}}}$ $\rm :\implies\: - 6 \times 3 = \dfrac{b}{1}$ $\bf\implies \:b = - 18$ ALSO, $\boxed{\purple{\sf Sum\ of\ the\ zeroes=\frac{-coefficient\ of\ x}{coefficient\ of\ x^{2}}}}$ $\rm :\implies\: - 6 + 3 = - \: \dfrac{(a + 1)}{1}$ $\rm :\longmapsto\: - 3 = - a - 1$ $\rm :\longmapsto\: a = 3 - 1$ $\bf\implies \:a = 2$ ADDITIONAL INFORMATION :- $\red{\rm :\longmapsto\: \alpha , \beta , \gamma \: are \: zeroes \: of \: a {x}^{3} + b {x}^{2} + cx + d, \: then}$ $\boxed{ \bf{ \: \alpha + \beta + \gamma = - \dfrac{b}{a}}}$ $\boxed{ \bf{ \: \alpha \beta + \beta \gamma + \gamma \alpha = \dfrac{c}{a}}}$ $\boxed{ \bf{ \: \alpha \beta \gamma = - \dfrac{d}{a}}}$

1054.

If -6 and 3 are zeroes of the quadratic polynomial x² + (a+1)x + b, then a and b are:-

Answer»

$\large\underline{\sf{Solution-}}$

GIVEN that,

$\red{\rm :\longmapsto\: - 6 \: and \: 3 \: are \: zeroes \: of \: {x}^{2} + (a + 1)x + b}$

We KNOW that,

$\boxed{ \purple{\sf Product\ of\ the\ zeroes=\frac{Constant}{coefficient\ of\ x^{2}}}}$

$\rm :\implies\: - 6 \times 3 = \dfrac{b}{1}$

$\bf\implies \:b = - 18$

ALSO,

$\boxed{\purple{\sf Sum\ of\ the\ zeroes=\frac{-coefficient\ of\ x}{coefficient\ of\ x^{2}}}}$

$\rm :\implies\: - 6 + 3 = - \: \dfrac{(a + 1)}{1}$

$\rm :\longmapsto\: - 3 = - a - 1$

$\rm :\longmapsto\: a = 3 - 1$

$\bf\implies \:a = 2$

ADDITIONAL INFORMATION :-

$\red{\rm :\longmapsto\: \alpha , \beta , \gamma \: are \: zeroes \: of \: a {x}^{3} + b {x}^{2} + cx + d, \: then}$

$\boxed{ \bf{ \: \alpha + \beta + \gamma = - \dfrac{b}{a}}}$

$\boxed{ \bf{ \: \alpha \beta + \beta \gamma + \gamma \alpha = \dfrac{c}{a}}}$

$\boxed{ \bf{ \: \alpha \beta \gamma = - \dfrac{d}{a}}}$

Discussion

1055.	A round brass bar is 5m long and 14mm in radius, calculate its volume in cm^3
Answer» Answer: Volume of brass bar = 3080 cm³ length = 5M = 500 CM radius = 14 MM = 1.4 cm $therefore. \: volume \: of \: brass \: bar = \\ = \pi {r}^{2} h \\ = \frac{22}{7} \times ( {1.4})^{2} \times 500 \\ = \frac{22}{7} \times 1.96 \times 500 \\ = 22 \times 0.28 \times 500 \\ = 3080 \: {cm}^{3}$

1055.

A round brass bar is 5m long and 14mm in radius, calculate its volume in cm^3

Answer»

Answer:

Volume of brass bar = 3080 cm³

length = 5M = 500 CM

radius = 14 MM = 1.4 cm

$therefore. \: volume \: of \: brass \: bar = \\ = \pi {r}^{2} h \\ = \frac{22}{7} \times ( {1.4})^{2} \times 500 \\ = \frac{22}{7} \times 1.96 \times 500 \\ = 22 \times 0.28 \times 500 \\ = 3080 \: {cm}^{3}$

Discussion

1056.	Two chips are taken out of a bag at random (one chip at a time) and without replacement (without replacement means that if you take a chip out of the bag, you leave it outside of the bag!). The bag originally contains two red chips and two blue chips. a. Given that the first chip is red, what is the probability that the second chip is blue? a. What is the probability that both chips are blue? b. What is the probability that the first chip is red and the second chip is blue? c. Would these results change if the two chips were taken out with replacement
Answer» Answer: Step-by-step EXPLANATION: SAMPLE Space S={2R,2B} i.e N(S)=4 Given That 1st Chip Is RED New Sample Space Is S1={1R,2B} i.e n(S1)=3 Probability That Second Chip Is Blue Is=2/3 (a)Both Chips Blue=2/41/3=2/12=1/6 i.e 16.6% (b)1st Chip Red And Second Chip Blue:1/22/3=1/3 i.e 33.3% Yes These Result WOULD Change If The Two Chips Would Take Out With Replacement

1056.

Two chips are taken out of a bag at random (one chip at a time) and without replacement (without replacement means that if you take a chip out of the bag, you leave it outside of the bag!). The bag originally contains two red chips and two blue chips. a. Given that the first chip is red, what is the probability that the second chip is blue? a. What is the probability that both chips are blue? b. What is the probability that the first chip is red and the second chip is blue? c. Would these results change if the two chips were taken out with replacement

Answer»

Answer:

Step-by-step EXPLANATION:

SAMPLE Space S={2R,2B} i.e N(S)=4

Given That 1st Chip Is RED New Sample Space Is S1={1R,2B} i.e n(S1)=3

Probability That Second Chip Is Blue Is=2/3

(a)Both Chips Blue=2/4*1/3=2/12=1/6 i.e 16.6%

(b)1st Chip Red And Second Chip Blue:1/2*2/3=1/3 i.e 33.3%

Yes These Result WOULD Change If The Two Chips Would Take Out With Replacement

Discussion

1057.	If 1000 rupees is invested at an annual rate of interest of 15% what is the amount after 5 years if the compounding takes place monthly?
Answer» Answer: Step-by-step EXPLANATION: AT1 Gautamiputra Satkarni was the king of the SATVAHANA dynasty. * मी सही True ठालउ गलत FFalse please MARK me brainlist

1057.

If 1000 rupees is invested at an annual rate of interest of 15% what is the amount after 5 years if the compounding takes place monthly?

Answer»

Answer:

Step-by-step EXPLANATION:

AT1 Gautamiputra Satkarni was the king of the SATVAHANA dynasty. * मी सही True ठालउ गलत FFalse please MARK me brainlist

Discussion

1058.	Plz solve question 3rd
Answer» Step-by-step EXPLANATION: $2 \times 5 + 3 \times 6 + 4 \times 7 \: \: \: \: \: \: \: \: \: \: \: 2 \times 2 + 3 \times 8 + 4 \times 1 \\ \\ \\ \\ \\ 10 + 18 + 28 \: \: \: \: \: \: \: \: \: \: \: 4 + 24 + 4 \\ \\ \\ \\ \\ \\ 56 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 32 \\ \\ \\ \\ \\ \|56 \: \: \: \: \: \: \: \: \: \: \: \: 32\|$

1058.

Plz solve question 3rd

Answer»

Step-by-step EXPLANATION:

$2 \times 5 + 3 \times 6 + 4 \times 7 \: \: \: \: \: \: \: \: \: \: \: 2 \times 2 + 3 \times 8 + 4 \times 1 \\ \\ \\ \\ \\ 10 + 18 + 28 \: \: \: \: \: \: \: \: \: \: \: 4 + 24 + 4 \\ \\ \\ \\ \\ \\ 56 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 32 \\ \\ \\ \\ \\ |56 \: \: \: \: \: \: \: \: \: \: \: \: 32|$

Discussion

1059.	(5
Answer» ANSWER: GOOD morning have a nice DAY AHEAD

1059.

(5

Answer»

ANSWER:

GOOD morning have a nice DAY AHEAD

Discussion

1060.	in a co-educational school,45% of the total potatoes and still has 150kg potatoes left with him. find the weight of potatoes he had originally
Answer» Percentage SOLD = 70% Percentage not sold = 100 - 70 = 30% Find the ORIGINAL weight of the potatoes: Percentage left = 30% Potatoes left = 150 kg 30% = 150 1% = 5 100% = 5 x 100 = 500 potatoes Answer: There were 500 potatoes originally correct me if im wrong:)

1060.

in a co-educational school,45% of the total potatoes and still has 150kg potatoes left with him. find the weight of potatoes he had originally

Answer»

Percentage SOLD = 70%

Percentage not sold = 100 - 70 = 30%

Find the ORIGINAL weight of the potatoes:

Percentage left = 30%

Potatoes left = 150 kg

30% = 150

1% = 5

100% = 5 x 100 = 500 potatoes

Answer: There were 500 potatoes originally

correct me if im wrong:)

Discussion

1061.	What is the order of surd of under root 39
Answer» Answer: 2 Step-by-step EXPLANATION: The root is CALLED the order Here, its SQUARE root Hence order = 2 Hope it helps Please MARK as brainliest

1061.

What is the order of surd of under root 39

Answer»

Answer:

2

Step-by-step EXPLANATION:

The root is CALLED the order

Here, its SQUARE root

Hence order = 2

Hope it helps

Please MARK as brainliest

Discussion

1062.	48. The HCF of 2472. 1284 and a third number N is 12. If their LCM is 243 x 3^2 x 5 x 103 x 107, then the number Nis: * 0 (a) 242x342x7 (b) 242 x 343 x 103 O (c) 242 x 3^2x5 O (d) 244 x 342 x II
Answer» ANSWER: hiiiiiiiiiiiiiiiiiiiiiiiiiiijiiiiiiiiii Step-by-step EXPLANATION: nehak

1062.

48. The HCF of 2472. 1284 and a third number N is 12. If their LCM is 243 x 3^2 x 5 x 103 x 107, then the number Nis: * 0 (a) 242x342x7 (b) 242 x 343 x 103 O (c) 242 x 3^2x5 O (d) 244 x 342 x II

Answer»

ANSWER:

hiiiiiiiiiiiiiiiiiiiiiiiiiiijiiiiiiiiii

Step-by-step EXPLANATION:

nehak

Discussion

1063.	All counting numbers, Together with their negative and zeros constitute a set of?
Answer» ANSWER: They are SET of INTEGERS.

1063.

All counting numbers, Together with their negative and zeros constitute a set of?

Answer»

ANSWER:

They are SET of INTEGERS.

Discussion

1064.	Tomorrow i have a math test of class 8th, can anyone send the important questions and answers of ch rational numbers, square roots and cube rootsThe one who will answer the best I will surely mark him brainliest
Answer» In which SCHOOL do U STUDY? HOPE it is HELPFUL.

1064.

Tomorrow i have a math test of class 8th, can anyone send the important questions and answers of ch rational numbers, square roots and cube rootsThe one who will answer the best I will surely mark him brainliest

Answer»

In which SCHOOL do U STUDY?

HOPE it is HELPFUL.

Discussion

1065.	-8 x [(-3) + (-2)] please answer
Answer» ANSWER: -8 X [(-3) + (-2)] = 40 Step-by-step EXPLANATION: hope it helps

1065.

-8 x [(-3) + (-2)] please answer

Answer»

ANSWER:

-8 X [(-3) + (-2)] = 40

Step-by-step EXPLANATION:

hope it helps

Discussion

1066.	Substranct: 4a-7ab+12 from 12a-9ab+5b-3
Answer» Answer: 12a - 9AB + 5b - 3 4a. -7AB. +12 (-). (+). (-) = 8A -2ab +5b -15

1066.

Substranct: 4a-7ab+12 from 12a-9ab+5b-3

Answer»

Answer:

12a - 9AB + 5b - 3

4a. -7AB. +12

(-). (+). (-)

= 8A -2ab +5b -15

Discussion

1067.	mr. pritesh ordered x mobile phones p=2x+32/x square -5/x how many mobiles should he order for the most economical deal
Answer» ANSWER: xgjjtldtdilitldiyldilyldlyipdpitdpitdtidpoitd

1067.

mr. pritesh ordered x mobile phones p=2x+32/x square -5/x how many mobiles should he order for the most economical deal

Answer»

ANSWER:

xgjjtldtdilitldiyldilyldlyipdpitdpitdtidpoitd

Discussion

1068.	77. यदि cot e =8तो (1)(1 + sin O) (1 - sin e), (ii) cote का मान निकालिए?(1 + cos e) (1 - cose)
Answer» ANSWER: GOOD MORNING Step-by-step EXPLANATION: have a good DAY

1068.

77. यदि cot e =8तो (1)(1 + sin O) (1 - sin e), (ii) cote का मान निकालिए?(1 + cos e) (1 - cose)

Answer»

ANSWER:

GOOD MORNING

Step-by-step EXPLANATION:

have a good DAY

Discussion

1069.	The numbers 1 to 10inclusive are placed in a hat . Irene takes a number out of the hat without looking. What is the probability that she draws the number 10
Answer» ANSWER: TOTAL OUTCOMES= 10 favourable outcomes=1 probability=1/10=0.1 ..answer

1069.

The numbers 1 to 10inclusive are placed in a hat . Irene takes a number out of the hat without looking. What is the probability that she draws the number 10

Answer»

ANSWER:

TOTAL OUTCOMES= 10

favourable outcomes=1

probability=1/10=0.1 ..answer

Discussion

1070.	To stitch a shirt, 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can be stitched and how much cloth will remain?PLEASE TELL ME TOMORROW IS MY EXAM
Answer» Step-by-step explanation: Cloth required to stitch ONE SHIRT = 2m 15cm 2\times100\ +152×100 +15 = 215 cm Total cloth available = 40m = 4000cm No. of SHIRTS that can be stitched = 4000\div215\ =\ 184000÷215 = 18 Therefore, 18 shirts can be stitched from 40m cloth and 130CM cloth will be left. Please mark me as brainliest!!

1070.

To stitch a shirt, 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can be stitched and how much cloth will remain?PLEASE TELL ME TOMORROW IS MY EXAM

Answer»

Step-by-step explanation:

Cloth required to stitch ONE SHIRT = 2m 15cm

2\times100\ +152×100 +15 = 215 cm

Total cloth available = 40m = 4000cm

No. of SHIRTS that can be stitched = 4000\div215\ =\ 184000÷215 = 18

Therefore,

18 shirts can be stitched from 40m cloth and 130CM cloth will be left.

Please mark me as brainliest!!

Discussion

1071.	Anu took a loan of 5000rs from a bank to start a vegetable shop.she paid back 450rs every month for one year. how much money did she back to the bank?
Answer» Answer: OK NICE tum HI ANS kar lo Step-by-step explanation:

1071.

Anu took a loan of 5000rs from a bank to start a vegetable shop.she paid back 450rs every month for one year. how much money did she back to the bank?

Answer»

Answer:

OK NICE tum HI ANS kar lo

Step-by-step explanation:

Discussion

1072.	Solve the following.plss
Answer» 5)9801 I HOPE it will not HELP U..

1072.

Solve the following.plss

Answer»

5)9801

I HOPE it will not HELP U..

Discussion

1073.	What is the smallest number that can be divided exactly by 5 and 9
Answer» Step-by-step EXPLANATION: The lcm of 2 to 9 i.e., =lcm of 2,3,4,5,6,7,8,9 =2520 Hence the smallest number DIVISIBLE by NUMBERS 2 to 9=2520.

1073.

What is the smallest number that can be divided exactly by 5 and 9

Answer»

Step-by-step EXPLANATION:

The lcm of 2 to 9 i.e., =lcm of 2,3,4,5,6,7,8,9

=2520

Hence the smallest number DIVISIBLE by NUMBERS 2 to 9=2520.

Discussion

1074.	(81/16)-3/4 × [(25/4)3/2 ÷(5/2)-3]
Answer» I HOPE this will HELP you...

Discussion

1075.	The sum of two rational numbers is9/16⁄ . If one of them is , find the otherno.
Answer» ANSWER: BRO you have not GIVEN the FIRST NUMBER

1075.

The sum of two rational numbers is9/16⁄ . If one of them is , find the otherno.

Answer»

ANSWER:

BRO you have not GIVEN the FIRST NUMBER

Discussion

1076.	If the ap is 3n^2+n then find it's 3rd term
Answer» ANSWER: RIGHT it PROPERLY to EXPLAIN

1076.

If the ap is 3n^2+n then find it's 3rd term

Answer»

ANSWER:

RIGHT it PROPERLY to EXPLAIN

Discussion

1077.	V V V3 3.3Find the shortest distance from the origin to the hyperbola x + 8 xy + 7y2 = 225.be the distance of thefrom
Answer» Answer: Substituting in hyperbola we GET 45x2=225. So that x2=5 and SINCE y2=4x2 we get y2=20. Hence x2+y2=25. Thus required shortest distance is 5. Step-by-step EXPLANATION: please mark BRAIN LIST

1077.

V V V3 3.3Find the shortest distance from the origin to the hyperbola x + 8 xy + 7y2 = 225.be the distance of thefrom

Answer»

Answer:

Substituting in hyperbola we GET 45x2=225. So that x2=5 and SINCE y2=4x2 we get y2=20. Hence x2+y2=25. Thus required shortest distance is 5.

Step-by-step EXPLANATION:

please mark BRAIN LIST

Discussion

1078.	Find the degree of x³y²+4x²y²+3xy³+6
Answer» Answer: 5 MARK me as the *BRAINLIEST*

1078.

Find the degree of x³y²+4x²y²+3xy³+6

Answer»

Answer:

5

MARK me as the BRAINLIEST

Discussion

1079.	the notation used is as follows u=find velocity u find velocity=a= acceleration displacement IN =time (table)
Answer» Answer: Displacement (s) of an object equals, velocity (u) times time (t), PLUS ½ times ACCELERATION (a) times time squared (T2). Use standard GRAVITY, a = 9.80665 m/s2, for equations involving the EARTH's gravitational force as the acceleration rate of an object. Step-by-step explanation: Hope that helps you

1079.

the notation used is as follows u=find velocity u find velocity=a= acceleration displacement IN =time (table)

Answer»

Answer:

Displacement (s) of an object equals, velocity (u) times time (t), PLUS ½ times ACCELERATION (a) times time squared (T2). Use standard GRAVITY, a = 9.80665 m/s2, for equations involving the EARTH's gravitational force as the acceleration rate of an object.

Step-by-step explanation:

Hope that helps you

Discussion

1080.	Please solve the problem and I will mark u as brainy ans
Answer» Step-by-step EXPLANATION: REFER to the ATTACHMENT for answer hope it HELPS

1080.

Please solve the problem and I will mark u as brainy ans

Answer»

Step-by-step EXPLANATION:

REFER to the ATTACHMENT for answer

hope it HELPS

Discussion

1081.	Expand the following:104²
Answer» ANSWER: $104 sqrt{ = 10816}$

1081.

Expand the following:104²

Answer»

ANSWER:

$104 sqrt{ = 10816}$

Discussion

1082.	Rubina plants 5 roses in a row in her garden. If the distance between two adjacent roses is 3/5m, find the distance between the first and last roses???With process
Answer» ANSWER: The DISTANCE between them is 3M

1082.

Rubina plants 5 roses in a row in her garden. If the distance between two adjacent roses is 3/5m, find the distance between the first and last roses???With process

Answer»

ANSWER:

The DISTANCE between them is 3M

Discussion

1083.	4+24÷4×3 by dmasplz send me a pic
Answer» Answer: 22 $hope \: its \: help \: you$

1083.

4+24÷4×3 by dmasplz send me a pic

Answer»

Answer:

22

$hope \: its \: help \: you$

Discussion

1084.	If A { 1,2,3,4,5 } B ={ 2,4 } then A intersection B =?
Answer» Step-by-step EXPLANATION: A INTERSECTION B={1,3,5}

1084.

If A { 1,2,3,4,5 } B ={ 2,4 } then A intersection B =?

Answer»

Step-by-step EXPLANATION:

A INTERSECTION B={1,3,5}

Discussion

1085.	Simplify :- - (√2+3)(√2-3)
Answer» ANSWER: dhhdhehwyhshzhzuzususyusisdudidie9eojsigsuvsivs

1085.

Simplify :- - (√2+3)(√2-3)

Answer»

ANSWER:

dhhdhehwyhshzhzuzususyusisdudidie9eojsigsuvsivs

Discussion

1086.	Give one example each of a binomial of degree 35, and of a monomial of degree 100
Answer» Step-by-step EXPLANATION: MONOMIAL = g100 binomial =X35 - K

1086.

Give one example each of a binomial of degree 35, and of a monomial of degree 100

Answer»

Step-by-step EXPLANATION:

MONOMIAL = g100

binomial =X35 - K

Discussion

1087.	If a b c are three collinear points name all the line segment determined by them
Answer» Answer: AB, bc,ac are the LINE segments determined by POINTS.

1087.

If a b c are three collinear points name all the line segment determined by them

Answer»

Answer:

AB, bc,ac are the LINE segments determined by POINTS.

Discussion

1088.	Find five rational number between 3/7and 5/7
Answer» ANSWER: Answer is ATTACHED here.

1088.

Find five rational number between 3/7and 5/7

Answer»

ANSWER:

Answer is ATTACHED here.

Discussion

1089.	1 पॉइंट 38 का भी वकील के रूप में हल निकाले
Answer» ANSWER: SORRY I don't UNDERSTAND HINDI

1089.

1 पॉइंट 38 का भी वकील के रूप में हल निकाले

Answer»

ANSWER:

SORRY I don't UNDERSTAND HINDI

Discussion

1090.	11. In an election being contested by two candidates, one candidate got 15% ofthe valid votes while 20% of the votes were declared invalid. How manyvotes did the other candidate get? Who won the election and by how much?If the total number of votes polled were 8500, how many votes were invalid!
Answer» Answer: invalid VOTES - 20/100 × 8500 = 1700 votes valid votes % - 100 - 20( invalid) = 80% valid votes 80/100 × 8500 = 6800 votes 1st CANDIDATE = 15/100 × 6800 = 1,020 votes 2nd candidate = 85/100 × 6800 = 5,780 * 2nd candidate won by majority of 4,760 votes.

1090.

11. In an election being contested by two candidates, one candidate got 15% ofthe valid votes while 20% of the votes were declared invalid. How manyvotes did the other candidate get? Who won the election and by how much?If the total number of votes polled were 8500, how many votes were invalid!

Answer»

Answer:

invalid VOTES - 20/100 × 8500 = 1700 votes

valid votes % - 100 - 20( invalid) = 80%

valid votes 80/100 × 8500 = 6800 votes

1st CANDIDATE = 15/100 × 6800 = 1,020 votes

2nd candidate = 85/100 × 6800 = 5,780

* 2nd candidate won by majority of 4,760 votes.

Discussion

1091.	Find all the four zeroes of the polynomial 2x^4+x^3-5x^2-2x+2
Answer» ANSWER: NO 0 IS THERE! SIMPLE!!!!!!

1091.

Find all the four zeroes of the polynomial 2x^4+x^3-5x^2-2x+2

Answer»

ANSWER:

NO 0 IS THERE! SIMPLE!!!!!!

Discussion

1092.	(5)Compute the weighted arithmetic mean. Of the Index number from the following data-Weight Group10Index Number12513015086(Food)(Clothing)(Hous Rent)( Fuel andLight)(Miscellaneous)14041602
Answer» ANSWER: sghsnsudikwhfkfgdkfjfk USO HU

1092.

(5)Compute the weighted arithmetic mean. Of the Index number from the following data-Weight Group10Index Number12513015086(Food)(Clothing)(Hous Rent)( Fuel andLight)(Miscellaneous)14041602

Answer»

ANSWER:

sghsnsudikwhfkfgdkfjfk USO HU

Discussion

1093.	Express the equation in form of ax+by+C =0 and indicate the values of in x/2-y/3+(-1/6+y)=0
Answer» Answer: Express the following linear EQUATIONS in the form ax+by+c=0 and indicate the values of a,b and c in each case: (i) 2x+3y=9.35 (ii) x−5y−10=0 (iii) −2x+3y=6 (IV) x=3y (v) 2x=−5y (vi) 3x+2=0 (vii) y−2=0 (viii) 5=2x Step-by-step explanation: I hope it is helpful for U Agar helpful hua to PLZ drop me some thanks plz

1093.

Express the equation in form of ax+by+C =0 and indicate the values of in x/2-y/3+(-1/6+y)=0

Answer»

Answer:

Express the following linear EQUATIONS in the form ax+by+c=0 and indicate the values of a,b and c in each case:

(i) 2x+3y=9.35

(ii) x−5y−10=0

(iii) −2x+3y=6

(IV) x=3y

(v) 2x=−5y

(vi) 3x+2=0

(vii) y−2=0

(viii) 5=2x

Step-by-step explanation:

I hope it is helpful for U

Agar helpful hua to PLZ drop me some thanks plz

Discussion

1094.	2) Prove that 3 + 5 is an irrational number.
Answer» Answer: Kindly allow me a minute or two ⌚ to check for relevant answers to your question. Please be online. √3 + √5 = a/b On squaring both sides we get, (√3 + √5)² = (a/b)² √3² + √5² + 2(√5)(√3) = a²/b² 3 + 5 + 2√15 = a²/b² 8 + 2√15 = a²/b² 2√15 = a²/b² – 8 √15 = (a²- 8b²)/2b a, b are integers then (a²-8b²)/2b is a RATIONAL number. Then √15 is also a rational number. But this contradicts the fact that √15 is an irrational number. Our assumption is incorrect √3 + √5 is an irrational number. Hence, proved. Step-by-step explanation: hope u have been UNDERSTOOD mark me as BRAINLIST

1094.

2) Prove that 3 + 5 is an irrational number.

Answer»

Answer:

Kindly allow me a minute or two ⌚ to check for relevant answers to your question. Please be online.

√3 + √5 = a/b

On squaring both sides we get,

(√3 + √5)² = (a/b)²

√3² + √5² + 2(√5)(√3) = a²/b²

3 + 5 + 2√15 = a²/b²

8 + 2√15 = a²/b²

2√15 = a²/b² – 8

√15 = (a²- 8b²)/2b

a, b are integers then (a²-8b²)/2b is a RATIONAL number.

Then √15 is also a rational number.

But this contradicts the fact that √15 is an irrational number.

Our assumption is incorrect

√3 + √5 is an irrational number.

Hence, proved.

Step-by-step explanation:

hope u have been UNDERSTOOD mark me as BRAINLIST

Discussion

1095.	Please me and i will back
Answer» Step-by-step explanation: Nanotechnology is the understanding and control of matter at the nanoscale, at DIMENSIONS between approximately 1 and 100 NANOMETERS, where unique PHENOMENA enable NOVEL applications.

1095.

Please me and i will back

Answer»

Step-by-step explanation:

Nanotechnology is the understanding and control of matter at the nanoscale, at DIMENSIONS between approximately 1 and 100 NANOMETERS, where unique PHENOMENA enable NOVEL applications.

Discussion

1096.	Please provide step by step answer class 10 maths
Answer» Answer: X = a^2 , y = b^2 Step-by-step explanation: I HOPE you will get it... *PLEASE* *add* my answer as BRAINLIST..... *THANK* *YOU*

1096.

Please provide step by step answer class 10 maths

Answer»

Answer:

X = a^2 , y = b^2

Step-by-step explanation:

I HOPE you will get it...

PLEASE add my answer as BRAINLIST.....

THANK YOU

Discussion

1097.	Q=1. Da as directed : Divide : (5x² - 6x) + 3x
Answer» ANSWER: the answer of this QUESTION is X(5X - 3)

1097.

Q=1. Da as directed : Divide : (5x² - 6x) + 3x

Answer»

ANSWER:

the answer of this QUESTION is X(5X - 3)

Discussion

1098.	What is the answer of (-1)⁴
Answer» ANSWER: FOLLOW this ATTACHMENT

1098.

What is the answer of (-1)⁴

Answer»

ANSWER:

FOLLOW this ATTACHMENT

Discussion

1099.	Prove the (1+w²)³=-1
Answer» Step-by-step EXPLANATION: We have, $\rm(1 + \omega^{2} )^{3}$ We KNOW, $1+\omega+{\omega}^{2}=0$ so, $1+{\omega}^{2}=-\omega$ Now, $\rm = (1 + \omega^{2} )^{3}$ $\rm = ( - \omega )^{3}$ $\rm = - (\omega )^{3}$ $\rm = - 1$

1099.

Prove the (1+w²)³=-1

Answer»

Step-by-step EXPLANATION:

We have,

$\rm(1 + \omega^{2} )^{3}$

We KNOW, $1+\omega+{\omega}^{2}=0$

so, $1+{\omega}^{2}=-\omega$

Now,

$\rm = (1 + \omega^{2} )^{3}$

$\rm = ( - \omega )^{3}$

$\rm = - (\omega )^{3}$

$\rm = - 1$

Discussion

1100.	Guys please help me this question with explanation
Answer» CHECK the ATTACHMENT !!

1100.

Guys please help me this question with explanation

Answer»

CHECK the ATTACHMENT !!

Discussion

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