Recent questions in Class 7

Simplify 2x+3x^2−5x+4−7x^2

asked Oct 14, 2015 by pady_1

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Evaluate 12(x-t), if x = 7 and t = 2.

asked Oct 14, 2015 by pady_1

1 answer

Sonia had some bats, she gave y bats to her friends. If 4 bats are remaining with her, how many bats she had earlier ?

asked Oct 14, 2015 by pady_1

1 answer

Subtract $-5y^2 - 4y + 5$ from the sum of $-4y^2 - 3y + 5$ and $3y^2 + 5y - 3$, and find its value when $y = 2.$

asked Oct 14, 2015 by pady_1

1 answer

3x^2 + 4x + 9x + 4x is a,

asked Oct 14, 2015 by pady_1

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Shilpa transfers apples from one larger box to smaller boxes. When the larger box is emptied, apples fill 4 smaller boxes and still 15 apples remained outside. If the number of apples in each smaller box is x, what was the number of apples in the larger box?

asked Oct 14, 2015 by pady_1

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Sita had some books, she gave m books to her friends. If 4 books are remaining with her, how many books she had earlier ?

asked Oct 14, 2015 by pady_1

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Gita is standing in a row. If she is n^{th} from the front and m^{th} from the back, how may people are standing in the row ?

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The dimensions of rectangular field are 14x - 12 and 11x + 15 units respectively. The value of x for which it would be square is

asked Oct 14, 2015 by pady_1

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If x = 6, solve 4(4x + 7) + 3(4 + (4 + 7))

asked Oct 14, 2015 by pady_1

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A number is 13 more than a second number. If the sum of both these numbers is 37, find the first number.

asked Oct 14, 2015 by pady_1

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Solve the equations to find value of a in equation 0.8a = 0.4

asked Oct 14, 2015 by pady_1

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What must be added to 2p^2 - 8 to get 3p^2 - 5p - 4.

asked Oct 14, 2015 by pady_1

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A number is 6 more than a second number. If the sum of both these numbers is 40, find the first number.

asked Oct 14, 2015 by pady_1

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The difference of two numbers is -42. 2 times the smaller number minus 3 times the larger number gives -137. Which is the larger number?

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If * be an operation such that ab = ab(a+b)(a-b), then 82 equals ________

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Find the value of z from equation \large\frac{2z}{4} + \large\frac{-5z + 5}{4} = \large\frac{-4z + 13}{4}

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Raj spends Rs. x daily and saves Rs. y per week. What is his income for 2 weeks ?

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A rectangular ground's length is 2 times its breadth. If its perimeter is 60 meters, what is the length of the ground in meters.

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In a school, 36% of girls study math and remaining girls are 256. The number of girls in the school are

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if P= -6b^2 + b + 8, Q=3b^2 - 3b + 9 and R=7b^2 - 8b + 3, find (P-Q+R)

asked Oct 14, 2015 by pady_1

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George bought a total of 19 hens and ducks. He got a discount of Rs. 0.80 for each hen and a discount of Rs. 1.40 for each duck. He saved Rs. 20 in total. How many ducks did he buy?

asked Oct 14, 2015 by pady_1

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The algebraic expression of the statement "Four-fifth of x multiplied by the difference of a and b" (Assume that a is less than b) ?

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Add a^2 + b^2 + c^2 – 3abc and a^2 – b^2 + c^2 + abc

asked Oct 14, 2015 by pady_1

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What is the coefficient of y in the term \large\frac{4}{3}x^2yz^2.

asked Oct 14, 2015 by pady_1

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Subtract 1 – 5y^2 from y^3 + 7y^2 + y + 1

asked Oct 14, 2015 by pady_1

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By how much is a^2 – 7a + 5 less than 3a^2 + 2a + 5?

asked Oct 14, 2015 by pady_1

1 answer

By how much is 2x^3 + 7x^2 – 5x + 6 greater than x^3 – 2x^2 + x + 5.

asked Oct 14, 2015 by pady_1

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What is the number of diagonals that can be drawn from one vertex in an octagen.

asked Oct 14, 2015 by pady_1

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Base of a triangle is 2x units and its height is 3y units. Find the area of the triangle.

asked Oct 14, 2015 by pady_1

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Side of a square is 2x cm. Find its area.

asked Oct 14, 2015 by pady_1

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Find the perimeter of a regular pentagon whose side is 4x cm.

asked Oct 14, 2015 by pady_1

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Find the perimeter of a square whose side is 4a cm.

asked Oct 14, 2015 by pady_1

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If a side of an equilateral triangle is 7x units then find the perimeter of the triangle.

asked Oct 14, 2015 by pady_1

1 answer

Simplify the following expression if x = 8 5x + 6(x – 3)

asked Oct 14, 2015 by pady_1

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Find the value of Algebric Expression when x = 2 x^2 – 3x + 5

asked Oct 14, 2015 by pady_1

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Find the value of the given algebraic expression when x = –2, 5x^2 + 4x – 2.

asked Oct 14, 2015 by pady_1

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Find the value of the given algebraic expression when x = –2, 10x – 2.

asked Oct 14, 2015 by pady_1

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What should be added to x^2 + y^2 to get 2x^2 + 3xy

asked Oct 14, 2015 by pady_1

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Find the value of the following expression for x = 2 15x – 5x^2

asked Oct 14, 2015 by pady_1

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Subtract x + y from \large\frac{3}{2}x-\large\frac{5}{2}y.

asked Oct 14, 2015 by pady_1

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The dimensions of rectangular field are 9x - 4 and 8x + 3 units respectively. The value of x for which it would be square is

asked Oct 14, 2015 by pady_1

1 answer

The length of a rectangular park is 7 meters more than its breadth. If its perimeter is 42 meters, what is the the length of the park in meters?

asked Oct 14, 2015 by pady_1

0 answers

Subtract -2q^2 - 3q from the sum of -3q^2 + q - 3 and 4q^2 - 2q + 2, and find its value when q = -1.

asked Oct 14, 2015 by pady_1

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An amount of Rs. 3100 is made up of Rs. 100, 50, 20 and 10 notes. The number of Rs.10 notes are 2 times the number of Rs.20 notes. The number of Rs.20 notes are 2 times the number of Rs.50 notes. The number of Rs.50 notes are 4 times the number of Rs.100 notes. How many Rs.50 notes are there?

asked Oct 14, 2015 by pady_1

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if P= -4p^2 + 7p - 5, Q=7p^2 - 6p - 4 and R= -p^2 - 9p - 2, find (P-Q+R)

asked Oct 14, 2015 by pady_1

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In a school 65\% students are boys. If there are 540 more boys than girls. Find total number of students in the school.

asked Oct 14, 2015 by pady_1

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If * be an operation such that cd = cd(c-d), then 22 equals ________

asked Oct 14, 2015 by pady_1

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A rectangular park's length is 2 times its breadth. If its perimeter is 48 meters, what is the length of the park in meters.

asked Oct 14, 2015 by pady_1

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A poultry farm produced 5b^2 + 17b + 5 eggs in a year. It packaged b^2 + 5b - 2 eggs and sent them to market while b^2 + 3b + 1 eggs got destroyed. How many eggs are left with the poultry farm?

asked Oct 14, 2015 by pady_1

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