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11Alexandr11 [23.1K]
3 years ago
10

How do I multiply and divide decimals?

Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

Answer:

To divide by a decimal, multiply the divisor by a power of ten to make the divisor a whole number. Then multiply the dividend by the same power of ten. You can think of this as moving the decimal point in the dividend the same number of places to the right as you move the decimal point in the divisor

Hope I helped :)

Sveta_85 [38]3 years ago
6 0

Answer:

Step-by-step explanation:

when multiplying, just do the regular multiplication then count the decimal places and apply it to the product

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Which are solutions of the equation 4x2 – 7x = 3x + 24? Check all that apply.
Andreyy89

Answer:

x = -3/2, x = 4

Step-by-step explanation:

4x² - 7x = 3x + 24, first put everything on one side

4x² - 10x - 24 = 0, factor 2 out

2(2x² - 5x - 12) = 0 then factor. You need two numbers that multiply to be -24 and add to be -5, so -8 and 3 are the factors.

(2x² - 8x) + (3x - 12) group them either way and then factor out GCF

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x - 4 = 0, x = 4

3 0
3 years ago
1) What is the square root of 81​
vekshin1
It’s 9. Square root is like the common factor of that number doubled by itself ... & 9x9 equals 81
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3 years ago
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Answer:

2.5

Step-by-step explanation:

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3 years ago
Read 2 more answers
Franklin saved money to buy art supplies
Nikolay [14]

<u>Question</u>:

Franklin saved money to buy art supplies. He used 1/5 of his savings to buy brushes. He used 1/2 of his savings to buy paint. What fraction of his savings does he have remaining?

Answer:

Franklin had  \frac{3}{10} of his saving left.

Step-by-step explanation:

Amount used to buy brushes = 1/5

Amount used to buy paint = 1/2

Solution:

Let the remaining amount  be x

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x =  1- (amount used on buying brushes + amount used for buying paints)

x = 1- (\frac{1}{5} + \frac{1}{2})

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

x =\frac{10-7}{10}

x =\frac{3}{10}

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Explaining:
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2 years ago
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