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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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Step-by-step explanation:

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2 years ago
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hram777 [196]

Answer:

On a coordinate plane, a line goes through (0, 3) and (2, 4) and another line goes through (0, 3) and (0.75, 0).

This answer almost coincide with option C. I suppose there was a mistype.

Step-by-step explanation:

The system of equations is formed by:

–x + 2y = 6

4x + y = 3

In the picture attached, the solution set is shown.

The first equation goes through (0, 3) and (2, 4), as can be checked by:

–(0) + 2(3) = 6

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The second goes through (0, 3) and (0.75, 0), as can be checked by:

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4(0.75) + (0) = 3

7 0
2 years ago
Read 2 more answers
How would you classify the number 121 ?<br>​
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Answer:

\boxed{121\:  is \:  a \: perfect \: square}

Step-by-step explanation:

the \:  \sqrt[3]{121}  \: is \: not \: a \: perfect \: cube \\ but \\ the \:  \sqrt{121}  = 11 \to \: is \: a \: perfect \: square \\

5 0
2 years ago
the radio of used cars at a dealership is 7:5. if the dealership has 156 cars on the lot , how many are new ?​
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Step-by-step explanation:

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Answer:

25.13

Step-by-step explanation:

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