2 years ago

If 20 is decreased to 18.6, the decrease is what percent of the original number?

Mathematics

1 answer:

Lady bird [3.3K]2 years ago

5 0

Answer:

1.4

Step-by-step explanation:

10 decreased by 1.4 is 18.6

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1 year ago

7x(x+4)<br> 7x^2+4<br> 7x^2+28x<br> 8x+4<br> 8x+11

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Answer:

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Step-by-step explanation:

$7x(x+4)\\\\Multiplication\ is\ distributive\ on\ addition\\\\\Rightarrow 7x(x+4)=7(x\times x+x\times 4)\\\\7x(x+4)=7(x^2+4x)\\\\Multiplication\ is\ distributive\ on\ addition\\\\\Rightarrow 7x(x+4)==7\times x^2+7\times 4x\\\\7x(x+4)=7x^2+28x$