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

need more info

step-by-step explanation:

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.