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Angelina_Jolie [31]
3 years ago
15

What number is 80% of 860?

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
5 0
80% of 860 is 688 because
860 x 0.8 =

688
 
A percent is a 'part of a hundred', so this is why you write percents as decimals
<span>To write a percent as a decimal, follow these steps:
<span>-Remove the percent symbol.
<span>-Move the decimal point two places to the left, adding in zeros as needed.</span></span></span>
This will make it easier to solve. 



pentagon [3]3 years ago
4 0
80% of 860 is 688
860 x 0.8 =

688
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Step-by-step explanation:

To find the missing side of a right triangle, use the Pythagorean Theorem. The Pythagorean Theorem is a^2+b^2=c^2 where a and b are the legs with a being the smallest and c is the hypotenuse.

1. a=6, b=8, c=?

6^2+8^2=c^2\\36+64=c^2\\100=c^2\\10=c

2. a=5, b=?, c=13

5^2+b^2=13^2\\25+b^2=169\\169-25=b^2\\144=b^2\\12=b

3. a=7, b=9, c=?

7^2+9^2=c^2\\49+81=c^2\\130=c^2\\\sqrt{130}=c

4. a=2, b=?, c=7

2^2+b^2=7^2\\4+b^2=49\\49-4=b^2\\45=b^2\\\sqrt{45}=b

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