Question

the perimeter of rectangle is 64 CM if the ratio of the length of two adjacent side is 7:9 find the length of these sides​

Answer 1

Answer:

7x+9x= 16x

16x=64

x=64/16

x=4

7x=7*4=28

9x=9*4= 36

Answer 2

Answer:

The  crate's upward acceleration is 10 m/s .

Given:

A 20 kg crate is lifted by an upward force of 200 N.

To find:

The crate's upward acceleration  

Solution:

Mass = 20 kg,

Force = 200 N

We know that the, Force is the product of mass and the acceleration.

Then the formula,

F = m$\times$a

200 = 20 $\times$ a

a = $\frac{200}{20}$ = 10 m/s

Result:

The  crate's upward acceleration is 10 m/s .