braelyngerard
braelyngerard braelyngerard
  • 12-04-2021
  • Mathematics
contestada

Given f(y) will mark brainly

Given fy will mark brainly class=

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OverpoweredNoob
OverpoweredNoob OverpoweredNoob
  • 12-04-2021

Answer:

y = -0.904, 19.904

Step-by-step explanation:

f(y) = 9

f(y) = sqrt(y + 99)

-------------------------------------------

9 = sqrt(y +99) - y

81 - 18y + y^2= y + 99

-19y + y^2 = 18

y(y - 19) = 18

y = -0.904, 19.904

(I used a calculator to solve those values)

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