If x varies directly with y and x = 2.5 when y = 10, find x when y = 16. 1.5 8 7.5 4

x = 4

Step-by-step explanation:

From the question, we were told that x varies directly as y. This means that: x = ay

where the constant is a.

Then, we solve for a

x = ay

Divide both side by y

a = x/y

When x = 2.5 when y = 10, a will be:

a = x/y

a = 2.5/10

= 0.25

To find x when y= 16

Recall that x = ay

x = 0.25 × 16

x = 4

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.