3 years ago

I need help I will give brainliest.

Mathematics

2 answers:

melomori [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Paul [167]3 years ago

6 0

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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