What is the value of x?

1 answer:

5 0

X = 35

use the formula a^2 + b^2 = c^2 in order to find the hypotenuse, which is x.

21^2 + 28^2 = c^2
441 + 784 = c^2
1225 = c^2
35 = c

x = 35

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marusya05 [52]

Answer:

y = 36x

Step-by-step explanation:

Given that y varies directly as x, then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 18 when x = $\frac{1}{2}$ , thus

k = $\frac{y}{x}$ = $\frac{18}{\frac{1}{2} }$ = 36

y = 36x ← equation of variation

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