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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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3 years ago
The length of a rectangle is five times its width. If the area of the rectangle is 320 cm^2, find its perimeter.
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4 years ago
Find the missing letter which is N.the length is 25 in and the perimeter is 86 in <br>​
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