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spin [16.1K]
3 years ago
7

What percent of 520 is 40? round to the nearest hundredth of a percent.

Mathematics
2 answers:
babunello [35]3 years ago
8 0

Method\ 1:\\\\\text{What percent of 520 is 40?}\\\\\dfrac{40}{520}=\dfrac{4}{52}=\dfrac{4:4}{52:4}=\dfrac{1}{13}\\\\\dfrac{1}{13}\cdot100\%=\dfrac{100}{13}\%\approx\boxed{7.69\%}\\---------------------\\\\Method\ 2:\\\\\begin{array}{ccc}520&-&100\%\\40&-&p\%\end{array}\qquad\text{cross multiply}\\\\520p=(40)(100)\\\\520p=4000\qquad\text{divide both sides by 520}\\\\p=\dfrac{4000}{520}\\\\p\approx7.69\\\\Answer:\ \boxed{7.69\%}

JulijaS [17]3 years ago
3 0

Answer:

7.6923%

Step-by-step explanation:

Let y% be the percent of 520.

520y = 40

y = 0.076923...

y = 7.6923%

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Evaluate the function f\left(x\right)=5x+2\mid11-5x\mid-4f(x)=5x+2∣11−5x∣−4 for x = -5.
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Answer:

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Step-by-step explanation:

Given

f\left(x\right)=5x+2\mid11-5x\mid-4

Required

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This implies that we substitute -5 for x in f\left(x\right)=5x+2\mid11-5x\mid-4

f\left(5\right)=5(-5)+2\mid11-5(-5)\mid-4

Open all brackets

f\left(5\right) = -25+2\mid11+25\mid-4

f\left(5\right) = -25+2\mid36\mid-4

Absolute value of 36 is 36; Wo, we have:

f\left(5\right) = -25+2*36-4

f\left(5\right) = -25+72-4

f\left(5\right) = 43

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