Questions by vaibhav

0 votes

0 answers

Express the following numbers in usual form. `4.5 xx

asked Jan 18, 2022 in 8th-maths

0 votes

0 answers

Express the number appearing in the following statements in standard form. Size of a bacteria is 0.0000005

asked Jan 18, 2022 in 8th-maths

0 votes

0 answers

If a box of sweets is divided among 24 children, they will get 5 sweets each. How many would each get, if the number of the children is reduced by

asked Jan 18, 2022 in 8th-maths

0 votes

0 answers

The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `51x^3y^2z -:

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `17ab^2c^3 -:

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Perform the following divisions: `(3pqr – 6p^2q^2r^2) -:

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Find the value of a, if `8a = 35^2 –

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The figure shows the dimensions of a wall having a window and a door of a room. Write an algebraic expression for the area of the wall to be painted.

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Very small numbers can be expressed in standard form using positive

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`(1/10)^0` is equal

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

For any two non-zero rational numbers x and y, `x^4 -: y^4` is equal

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

For a non-zero rational number p, `p^13 -: p^8` is equal

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`5^5 xx 5^(–5)` =

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

By solving `(6^0 – 7^0) xx (6^0 + 7^0)` we get

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`(–7)^(–4) xx (–7)^2 =

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The value of `5^(–2)` is equal to

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The cells of a bacteria double itself every hour. How many cells will there be after 8 hours, if initially we start with 1 cell. Express the answer in

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

An electron’s mass is approximately `9.1093826 xx 10^(–31)` kilograms. What is this mass in

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression `3^(–t)`. (a) What fraction of substance remains after 7 half-lives? (b) After how many half-lives will the fraction be `1/243` of the

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Sanchay put a 1cm stick of gum through a `(1 xx 3^(–2))` machine. How long was the stick when it came

asked Jan 17, 2022 in 8th-maths

Page:

« prev
1
...
12
13
14
15
16
17
18
...
44
next »