winnielovesing winnielovesing
  • 27-04-2021
  • Mathematics
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I need help I will give brainliest.

I need help I will give brainliest class=

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zc123 zc123
  • 27-04-2021

Answer:

C

Step-by-step explanation:

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jiaxinzhou002 jiaxinzhou002
  • 27-04-2021
Answer: 12

Explanation: QT = x +4
Use proportions: x +4/ 4 = 9/3
Cross Multiply: 3(x+4) = 36
Solve 3x+12 = 36
x=8

Plug back into equation: 8 +4 = 12
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