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2 years ago

What's the anewer to this problem..?

Mathematics

2 answers:

valentina_108 [34]2 years ago

4 0

21x(9)=9x21
21y= 9x21
Y=9x21/21
Y=9x1
Y=9

Elanso [62]2 years ago

3 0

<u>Answer:</u> The correct answer is 9.

<u>Step-by-step explanation:</u>

Multiplication property of equality is defined as the property in which the a number multiplied on one side of the equation must be multiplied to the other side of the equation with the same sign.

$a\times c=b\times c$

c is multiplied on both the sides of the reaction.

In the given question:

$21\times x=9\times 21$

Thus, the value of 'x' will be 9 by associative property.

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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

36/3 in simplest form

AveGali [126]

Answer:12/1

Step-by-step explanation:

5 0

3 years ago

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The amount A of the radioactive element radium in a sample decays at a rate proportional to the amount of radium present. Given

slavikrds [6]

Answer:

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