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Bingel [31]
2 years ago
6

How to convert 4.5 into a decimal

Mathematics
1 answer:
stiks02 [169]2 years ago
8 0
When you ask, "What is 4.5 as a decimal?", we assume you want to know what 4.5 percent is as a decimal. In other words, 4.5 percent converted to decimal.

First, we will tell you why it is useful to know 4.5 as a decimal.

Normally, to calculate 4.5 percent, you would multiply a number by 4.5 percent and then you would take the product of that and divide it by 100 to get the answer.

Instead, you can simply multiply a number by 4.5 as a decimal to get the answer.

4.5 percent means 4.5 per hundred. Therefore, to get 4.5 as a decimal, all you have to do is divide 4.5 by 100 like so:

4.5 ÷ 100 = 0.045
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What number must you add to complete the square x^-8x=39
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Answer:

Given equation: x^2-8x =39

when we complete the square , we take half of the value of 8 , then square it, and added to the left sides, we get;

x^2-8x+4^2 = 39 +4^2

∵8 is the value (\frac{8}{2})^2

Notice that, we add this both sides so that it maintains the equality.

then;

x^2-8x+4^2 = 39 +4^2

(x-4)^2 = 39 + 16   [ (a-b)^2 = a^2-2ab+b^2 ]

Simplify:

(x-4)^2 =55

The number must be added to complete the square is, 4^2 = 16



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Please help!! <br><br><br> Find the inverse of y=7x-10. Is the inverse a function?
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Answer: f^{-1} (x) = \frac{x+10}{7}

Step-by-step explanation:

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f^{-1} (x) = \frac{x+10}{7}

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