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TEA [102]
3 years ago
14

X-y = 10 x^2-y^2 = 60 x^2+2xy+y^2=?

Mathematics
1 answer:
Darina [25.2K]3 years ago
8 0

 

\displaystyle\\x-y=\boxed{10}\\\\----------\\\\x^2-y^2 = 60\\\\(x-y)(x+y)=60\\\\10(x+y)=60\\\\x+y=\frac{60}{10}=\boxed{6}\\\\----------\\\\x^2+2xy+y^2=(x+y)^2=6^2=\boxed{\bf36}

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Answer:

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3 years ago
Find the volume of the composite figure at the right.
nataly862011 [7]

Answer:

715.6 in^3

Step-by-step explanation:

<u>Step 1:</u>

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<u>Step 3:</u>

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3 years ago
The following proportions were written on the board by Ms. Warren.​
Elenna [48]

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see explanation

Step-by-step explanation:

A

given

\frac{3.6}{5.7} = \frac{f}{9.5} ( cross- multiply )

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B

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3 years ago
The Ferris wheel shown makes 16 revolutions per ride. How far would someone travel during one ride? Round your final answer to t
sertanlavr [38]

Complete question :

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Step-by-step explanation:

Given that :

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Or

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4 0
2 years ago
The cylinder is 20cm high and radius of its circular face is 3cm What is the total perimeter and area of the whole net?
trasher [3.6K]

Answer: 52\ cm,\ 176.55\ cm^2

Step-by-step explanation:

Given

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The radius of the cylinder is r=3\ cm

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