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puteri [66]
3 years ago
9

Help on questions 37 and 38 please!

Mathematics
1 answer:
jeka943 years ago
6 0

Answer:

Step-by-step explanation:

38.

M=\frac{1}{2} (x_{1}+x_{2})\\2M=x_{1}+x_{2}\\x_{1}=2M-x_{2}

37.

S=\frac{ab^2}{3} \\3S=ab^2\\b^2=\frac{3S}{a} \\b=\pm\sqrt{\frac{3S}{a} }

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Answer:

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Since there are two numbers (9 and 11) we have to take their average.

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3 years ago
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