3 years ago

81 to the power of 3/4 help

Mathematics

2 answers:

Alexus [3.1K]3 years ago

6 0

81 to the power of 3/4 is 27

olga2289 [7]3 years ago

4 0

Not sure does anyone know what -26 - (-9 4/5) is I need help!!!!

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If a = 0.6 repeating and b = 0.75, then a x b = blank and a/b = blank

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Answer:

a*b = 1/2

a/ b = 8/9

Step-by-step explanation:

a = 0.66666 and b = 0.75

To multiply it we write the decimal numbers in fraction form

a= 0.666666...

Multiply by 10 on both sides

10 a = 6.66666...

a = 0.66666...

Subtract the second equation

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Now we convert 0.75 into fraction form

$0.75=\frac{0.75}{1}$

Multiply top and bottom by 100 to remove decimal

$\frac{75}{100} = \frac{3}{4}$

so 0.75 is 3/4

a= 2/3 and b = 3/4

$a*b = \frac{2}{3} * \frac{3}{4} = \frac{6}{12} = \frac{1}{2}$

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3 years ago