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3 years ago

Can you guys help me

Mathematics

1 answer:

ra1l [238]3 years ago

7 0

Answer:

x = 9

Step-by-step explanation:

9 to the sixth power = 531441

9 to the third power = 729

531441 = x cubed × 729

Divide by 729 on both sides.

531441 divided by 729 equals 729

729 divided by 729 equals 0

729 = x cubed

Find cube root

9x9x9 =729

Cube root of 729 is 9

x=9

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4 0

3 years ago

HURRY PLZ

Oliga [24]

Answer:

6x + 2(−2x + 1) = 22

Step-by-step explanation:

6x + 2(−2x + 1) = 22

This step can be used to solve by substitution method.

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3 years ago

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3 years ago

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

atroni [7]

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

9a = 6

divide by 9 on both sides

$a=\frac{6}{9}=\frac{2}{3}$

so 0.6666 = 2/3

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

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

$\frac{a}{b} = \frac{\frac{2}{3}}{\frac{3}{4}} = \frac{2}{3} * \frac{4}{3} =\frac{8}{9}$

8 0

3 years ago

All 3 of these plz ??

LenaWriter [7]

Number 3 / last one is -49 hoped I helped you

6 0

3 years ago