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4651.

Simplify 2−5×−5−5.

Answer»

Simplify 25×55.

4652.

I buy apples, grapes and bananas for 2 days. I want to compare their prices using a graph. What type of graph should I use?

Answer»

I buy apples, grapes and bananas for 2 days. I want to compare their prices using a graph. What type of graph should I use?


123



4653.

Question 7 (ii) Maria invested Rs 8,000 in a business. She would be paid interest at 5% per annum compounded annually. Find: (ii) The interest for the third year.

Answer» Question 7 (ii)
Maria invested Rs 8,000 in a business. She would be paid interest at 5% per annum compounded annually. Find:
(ii) The interest for the third year.
4654.

In the given diagram, AB is parallel to PQ. If a right triangle can be constructed with ∠PO′X and ∠BOY as two of its angles, then find the value of ∠PO′X.

Answer»

In the given diagram, AB is parallel to PQ. If a right triangle can be constructed with POX and BOY as two of its angles, then find the value of POX.




4655.

In the given figure, AD is a median of ABC and E is the mid-points of AD. Also, BE produced meets AC in F. Then AF = ___

Answer»

In the given figure, AD is a median of ABC and E is the mid-points of AD. Also, BE produced meets AC in F. Then AF = ___


4656.

Construct an equilateral triangle LMN, one of whose side is 5 cm. Bisect ∠ M of the triangle.

Answer» Construct an equilateral triangle LMN, one of whose side is 5 cm. Bisect ∠ M of the triangle.




4657.

Arrange the following rational numbers in ascending order.38,412,−716,−23.

Answer» Arrange the following rational numbers in ascending order.



38,412,716,23.
4658.

Which angle is equal to half of its complement.

Answer» Which angle is equal to half of its complement.
4659.

If x=(−25)30÷(−25)28 and y=(−25)2×(−25)3, then find the value of (x3÷y)2.

Answer»

If x=(25)30÷(25)28 and y=(25)2×(25)3, then find the value of (x3÷y)2.

4660.

(13) divided by (35) is ____.

Answer» (13) divided by (35) is ____.
4661.

Two numbers are respectively 40% and 50% of a third number. What percentage is first number of the second?

Answer» Two numbers are respectively 40% and 50% of a third number. What percentage is first number of the second?
4662.

What is the degree of monomial 5xyz2?

Answer»

What is the degree of monomial 5xyz2?

4663.

In a class test (+3) marks are given for every correct answer and (−2) marks are given for every incorrect answer and no marks for not attempting any question. Rakesh scores 18 marks by attempting16 questions. How many questions has he attempted correctly and how many has he attempted incorrectly? [4 MARKS]

Answer» In a class test (+3) marks are given for every correct answer and (−2) marks are given for every incorrect answer and no marks for not attempting any question. Rakesh scores 18 marks by attempting16 questions. How many questions has he attempted correctly and how many has he attempted incorrectly? [4 MARKS]
4664.

23. Construct triangle ABC in which BC =7.5 cm , [?] B =45 and AB-AC=4

Answer» 23. Construct triangle ABC in which BC =7.5 cm , [?] B =45 and AB-AC=4
4665.

What is the sign given to the sum of negative integers?

Answer»

What is the sign given to the sum of negative integers?

4666.

89 - 79 = ?

Answer»

89 - 79 = ?

4667.

car travels a distance s km on a straight roadin two hours and then returns to the starting pointin the next three hours. Its average speed in fourhours (in km/h)5s(2) 12(1)2S(4) Zero(†extsterling)

Answer» car travels a distance s km on a straight roadin two hours and then returns to the starting pointin the next three hours. Its average speed in fourhours (in km/h)5s(2) 12(1)2S(4) Zero(†extsterling)
4668.

How many 4 kg packets can be made from 36 kg of rice?

Answer» How many 4 kg packets can be made from 36 kg of rice?
4669.

In triangle abc angle bac is equal to 30 degrees. If d and e are the points on the sides ab and ac respectively such that de is parallel to bc and cd is perpendicular to be. If de is equal to 6 cm and bc is equal to 15 cm than what is the area of bced?

Answer» In triangle abc angle bac is equal to 30 degrees. If d and e are the points on the sides ab and ac respectively such that de is parallel to bc and cd is perpendicular to be. If de is equal to 6 cm and bc is equal to 15 cm than what is the area of bced?
4670.

where the buccal funnel is present and what is its use in petromyzon ?

Answer» where the buccal funnel is present and what is its use in petromyzon ?
4671.

Question 28Fill in the blanks to make the statements true.The square of 500 will have ___ zeroes.

Answer»

Question 28



Fill in the blanks to make the statements true.



The square of 500 will have ___ zeroes.



4672.

maithili , shaila and ajay live in three different places in the city . A toy shop is equidistant from the 3 houses. which geometrical construction should be used to represent this? explain the answer

Answer»

maithili , shaila and ajay live in three different places in the city . A toy shop is equidistant from the 3 houses. which geometrical construction should be used to represent this? explain the answer

4673.

The points P, Q, R, S, T, U, A and B on the number line are such that,TR = RS = SU and AP = PQ = QB. Name the rational numbers represented by P, Q, R and S.

Answer»

The points P, Q, R, S, T, U, A and B on the number line are such that,



TR = RS = SU and AP = PQ = QB. Name the rational numbers represented by P, Q, R and S.



4674.

Difference between spherical symmetry and radial symmetry?

Answer» Difference between spherical symmetry and radial symmetry?
4675.

Give an example for commutative property of addition.

Answer»

Give an example for commutative property of addition.

4676.

number of proper subsets of \{1,2,3\

Answer» number of proper subsets of \{1,2,3\
4677.

Compare the rational numbers and choose the correct option.25___34

Answer»

Compare the rational numbers and choose the correct option.


25___34



4678.

Can we say that every equilateral triangle is an isosceles triangle?

Answer»

Can we say that every equilateral triangle is an isosceles triangle?

4679.

The frequency of a variable increase at a constant rate with respect to the variable, say x. The following table depicts some of the data points. Plot a line graph and find the missing data point 'm'. xFrequency 1 3 2 5 3 7 4 m 5 11

Answer» The frequency of a variable increase at a constant rate with respect to the variable, say x. The following table depicts some of the data points. Plot a line graph and find the missing data point 'm'.


xFrequency




























1 3
2 5
3 7
4 m
5 11


4680.

7. A 20 L container at 400k contains CO_2 at pressure 0.4atm and an excess of SrO. The volume of the container now decrease by moving the movable piston fitted in the container. The maximum volume of the container when pressure of CO_2 attains the maximum value

Answer» 7. A 20 L container at 400k contains CO_2 at pressure 0.4atm and an excess of SrO. The volume of the container now decrease by moving the movable piston fitted in the container. The maximum volume of the container when pressure of CO_2 attains the maximum value
4681.

A pizza is cut into 6 equal pieces. After having a slice of pizza, the pizza left on the plate is shown below:Which graphical method resembles this?

Answer»

A pizza is cut into 6 equal pieces. After having a slice of pizza, the pizza left on the plate is shown below:



Which graphical method resembles this?



4682.

Determine the area of the given trapezoid.

Answer»

Determine the area of the given trapezoid.


4683.

a man running on a horizontal road at 8 kmph finds to rain verti cally. He increses his speed to 12 kmph and find that the drops make angle 30 degree with the vertical. Find the speed and direction of rain wrt the road?

Answer» a man running on a horizontal road at 8 kmph finds to rain verti cally. He increses his speed to 12 kmph and find that the drops make angle 30 degree with the vertical. Find the speed and direction of rain wrt the road?
4684.

13. Suppose that f is an even, periodic function with period 2,and that f(x)=x for all x in the close interval of 0 to 1.Find the value of f(3.14).

Answer» 13. Suppose that f is an even, periodic function with period 2,and that f(x)=x for all x in the close interval of 0 to 1.Find the value of f(3.14).
4685.

Solve the following equation:10p + 10 = 100

Answer» Solve the following equation:

10p + 10 = 100
4686.

What sum of money when lent out at 5% for 3 years will produce the same interest as ₹900 lent out at 4% for 5 years?

Answer»

What sum of money when lent out at 5% for 3 years will produce the same interest as 900 lent out at 4% for 5 years?

4687.

There are two mangoes and three kids. The ratio of the number of mangoes to the number of kids is .

Answer»

There are two mangoes and three kids. The ratio of the number of mangoes to the number of kids is .

4688.

44.What is an algebraic function?

Answer» 44.What is an algebraic function?
4689.

Question 5It is true that the distance travelled by a circular wheel of diameter d cm in one revolution is 2πd cm? why?

Answer» Question 5

It is true that the distance travelled by a circular wheel of diameter d cm in one revolution is 2πd cm? why?

4690.

What is the multiplicative inverse of 0?

Answer»

What is the multiplicative inverse of 0?



4691.

if x(y+2)=140 and y(x+2)=144 then the value of x+y is

Answer» if x(y+2)=140 and y(x+2)=144 then the value of x+y is
4692.

In the figure shown, show that ∠1+∠3+∠8+∠6=3600. [2 MARKS]

Answer»

In the figure shown, show that 1+3+8+6=3600. [2 MARKS]

4693.

Find the values of x and y in the following rectangle.

Answer» Find the values of x and y in the following rectangle.



4694.

△DEF is drawn with the length of side EF being 7.5 cm. If ∠E is 75∘ and ∠F is 55∘, then the measure of ∠D is ______ degrees.50

Answer» DEF is drawn with the length of side EF being 7.5 cm. If E is 75 and F is 55, then the measure of D is ______ degrees.
  1. 50
4695.

What is the distance between the wall and the ladder on the ground?

Answer»

What is the distance between the wall and the ladder on the ground?




4696.

Which isgreater?(i) 0.5 or0.05 (ii) 0.7 or 0.5 (iii) 7 or 0.7(iv) 1.37or 1.49 (v) 2.03 or 2.30 (vi) 0.8 or 0.88

Answer»

Which is
greater?



(i) 0.5 or
0.05 (ii) 0.7 or 0.5 (iii) 7 or 0.7


(iv) 1.37
or 1.49 (v) 2.03 or 2.30 (vi) 0.8 or 0.88

4697.

What should be added to x2+xy+y2 to obtain 2x2+3xy?

Answer» What should be added to x2+xy+y2 to obtain 2x2+3xy?
4698.

Question 2 (c)How many diagonals does each of the following have?(c) A triangle

Answer» Question 2 (c)

How many diagonals does each of the following have?

(c) A triangle
4699.

Find the sum of the following.(1) 3b and −2a(2) −7x and 3y(3) 5a and 2b(4) 7m and −5n(5) 15xy and 5pq(6) 4x2 and b2(7) 5mn2 and 9m2n(8) 6a2bc and 4x2yz

Answer»

Find the sum of the following.



(1) 3b and −2a



(2) −7x and 3y



(3) 5a and 2b



(4) 7m and −5n



(5) 15xy and 5pq



(6) 4x2 and b2



(7) 5mn2 and 9m2n



(8) 6a2bc and 4x2yz

4700.

Question 6 (d) (d) Copy the diagram and complete each shape to be symmetric about the mirror line (s):

Answer» Question 6 (d)
(d) Copy the diagram and complete each shape to be symmetric about the mirror line (s):