AdiGirlBrainly
10.01.2021 •
Mathematics
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
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Ответ:
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
Ответ:
men arent you smart enogh to know this answer am sorry