skylarann2003 skylarann2003

10-01-2021
Mathematics

contestada

use the equation xy=-28.8 find the value of y when x =4
A. -0.14
B. -115.2
C. -32.8
D. -7.2

Respuesta :

Аноним Аноним

10-01-2021

Answer: D. -7.2

Step-by-step explanation:

Substitute x=4 into xy=-28.8.

xy=-28.8

(4)(y)=-28.8

Now solve for y:

Divide both sides of the equation by 4:

(4y)/4=(-28.8)/4

Simplify:

y=-7.2

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