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EastWind [94]
2 years ago
10

Simplify the following expression(x+y)²​

Mathematics
1 answer:
MrMuchimi2 years ago
8 0

Answer:

{x}^{2}  + 2xy +  {y}^{2}

Step-by-step explanation:

1) Use square sum: (a + b)² = a² + 2ab + b².

{x}^{2}  + 2xy + y^{2}

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>x</u><u>²</u><u> </u><u>+</u><u> </u><u>2xy</u><u> </u><u>+</u><u> </u><u>y</u><u>²</u>.

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87 is 15% of what number​
jarptica [38.1K]

Answer:

580

Step-by-step explanation:

Let's translate this word for word.

87 is 15% of what number

87 = 15% times x

87=.15 times x

87=.15 \cdot x

Divide both sides by .15

\frac{87}{.15}=\frac{.15x}{.15}

Cancel out the common factor of .15 on the right; that is .15/.15=1.

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2 years ago
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(I will mark brainliest for the correct answer.)
andreyandreev [35.5K]

Answer:

D. 31

Step-by-step explanation:

To find the mean of any group of numbers, you simply add up all the numbers and then divide by how many numbers there are.

Using a calculator or a pencil, add the following:

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The last step is to divide 461 by 15:

461/15 = 30.73

Round 30.73 to the nearest whole number and you get D. 31

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I bought 10 piece chicken nuggets (400 calories) I ate 8 and left the 2 how much calories did I consume???
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400 divided by 10 is 40
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