Question

please solve this worksheet... I don't understand it ​

Answer 1

Answer:

Worksheet is easy but takes time to complete

I will answer as soon as I complete

Answer 2

Step-by-step explanation:

1. (i) Let the number of pencils with Rahul be x. Then,

3x - 5 = 16.

(ii) 3/4 of a number, say x = 3x/4

3x/4 + 5 = y.

(iii) Let the number be x, then

8x - 4 = 28

(iv) Age of Bharath be x, then

2x + 4 = 48

(2) x + 3 = 11

So, by trial and error method, let's assume x = 5

x + 3 = 11

5 + 3 = 8

So 11 not equal to 8

Now, lets assume x = 8,

x + 3 = 11

8 + 3 = 11

So, the value of x = 8

(3) (i) Given, y = -5

Then, 7y + 2 =-33 => 7(-5) +2 = -35 + 2 = -33

The value of y satisfies the condition.

Thus y = -5 is a solution of 7y + 2 = -33

(ii) Given that p = 5

Then, 3p + 7 = 21 => 3(5) + 7 = 15 + 7 = 22

The value of p doesn't satisfy the condition.

Thus, p = 5 is not a solution of 3p + 7 = 21

(4) (i) -4y - 7 = -9

-4y = -9 + 7

y = -2/-4 = 1/2

(ii)

$\frac{x}{5} = \frac{3}{10}$

by cross multiplication,

$10x = 3 \times 5$

=> x = 15/10 = 3/2

(iii)

$\frac{2r}{5} - 1 = 3$

$\frac{2r}{5} = 3 + 1$

$2r = 20$

=> r = 20/2 = 10

(iv) 6z + 6 = -12

6z = -12 - 6

z = -18/6 = -3

Hope you find it helpful