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3 years ago

What is 70 pennies decreased by 20%?

Mathematics

2 answers:

Natalka [10]3 years ago

8 0

The answer is 56 pennies!ヽ(◉ ͜ʖ◉)ﾉ

Serjik [45]3 years ago

4 0

70-20%=56
You multiply 70 x .2 = 14 and then subtract
70-14=56
So your answer is 56 pennies

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the variable Z is invery proportional to X. when X is 3, Z has the value 6. what is the value of Z when X = 12

MrMuchimi

"inversely proportional," please.

z = k/x

When x is 3, z = 6; find k: 6 = k/3, or k = 18.

Then z = 18/x. When x = 12, z = 18/12 = 2/3 (answer)

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3 years ago

Find the ratio 2 1/2 to 6 1/2

ivanzaharov [21]

Answer:

The ratio 2 1/2 to 6 1/2 is

$\frac{5}{13}\\or\\5:13$

Step-by-step explanation:

Ratio:

In mathematics, a ratio is a relationship between two numbers indicating how many times the first number contains the second.

It is also the Fraction

For example, if a bowl of fruit contains eight apples and six kiwis, then the ratio of apples to kiwis is eight to six.

i.e 8:6, which is equivalent to the ratio 4:3.

Now here,

$2\frac{1}{2}=\frac{4+1}{2}\\\\2\frac{1}{2}=\frac{5}{2}\\\\and\\\\6\frac{1}{2}=\frac{12+1}{2}\\\\6\frac{1}{2}=\frac{13}{2}$

Ratio of 2 1/2 to 6 1/2

$\frac{\frac{5}{2}}{\frac{13}{2}} = \frac{5}{13}\ \textrm{The number 2 will be cancelled from Numerator and Denominator} \\\\Hence,\\Final\ Ratio\ is\ 5 :13$

$\frac{5}{13}$

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3 years ago

What is the volume of 8x12x10

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Answer:

960

Step-by-step explanation:

You multiply all of the numbers together to get 960

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