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LuckyWell [14K]
3 years ago
14

CAN SOMEONE PLEASE ANSWER THIS ASAP FOR BRAINLIEST!

Mathematics
1 answer:
netineya [11]3 years ago
3 0
Answer:
14x^2(1+2x^3)
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What is the answer to the following <br>-1+8=​
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Step-by-step explanation:

-1+8=7

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What is $0.8\%$ of $125\%$ of $8128$? Express your answer as a decimal.
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<h2>81.28</h2>

Step-by-step explanation:

To solve this kind of problem, we must remember that the word "of" means multiplication in math language, and all percentages numbers can be expressed as a fraction where the denominator is 100. Applying all this, we have

0.8\%\times 125\%\times 8128\\\frac{0.8}{100}\times \frac{125}{100} \times 8128\\ 0.008(1.25)(8128)=81.28

Therefore, all those percentages of 8128 results in 81.28

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What would be the third step in simplifying the expression 4 2 ÷ (2 · 9) + 5?
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WILL MAKE BRAINLIST------ Describe both rotational symmetry and reflection symmetry. Find four examples of symmetry in your clas
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Charlene is a video game designer and wants to make sure that her games can be played on all types of screens. In order for the
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The playable area has a width of 9 inches and a height of 6 inches.

Step-by-step explanation:

There are a number of ways you can get there.

1. Check the answers to see which have the right area and aspect ratio.

A: area = 24 in² — does not match 54 in²

B: area = 54 in², aspect ratio 6:9 = 2:3 — does not match 3:2 aspect ratio

C: area = 54 in², aspect ratio 9:6 = 3:2 — matches problem statement

D: area = 121.5 in² — does not match 54 in²

2. If the screen were 3:2 (inches), its area would be 6 in². The area of 54 in² is 9 times that value, so the actual screen dimensions are √9 = 3 times 3:2. That is, they are width:height = 9:6 inches — matches selection C.

3. You can write equations for width and height and solve.

w/h = 3/2

wh = 54

Substituting w=3/2·h into the second equation gives

... (3/2)h·h = 54

... h² = 36 . . . . . multiply by 2/3

... h = √36 = 6 . . . . square root, result in inches

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