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aev [14]
3 years ago
15

20 of the 80 coffee mugs at Carson's Pancake House are dirty. What percentage of the coffee mugs at the pancake house are dirty?

Mathematics
2 answers:
erastova [34]3 years ago
5 0

We have:

\dfrac{20}{80} = \dfrac{\%} {100}

Solving for %:

\% = \dfrac{20\cdot 100}{80} = 25\%

<h2>R/ 25% of coffee mugs are dirty.</h2>

Dennis_Churaev [7]3 years ago
3 0

Answer:

25%

Step-by-step explanation:

20/80 in can be reduced to 1/4 and 1/4 equals 25%.

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Factor completely x2 + 20x − 36.
vodomira [7]

Answer:

Prime

Step-by-step explanation:

x² + 20x − 36

You must find a pair of numbers that multiply to give -36 and add to give +20.

The likely candidates are 2 and 18, and they must have opposite signs to give a negative product.

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-2 ×   18  = -36;  -2 +     8   = +16

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The expression can't be factored with rational numbers.

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3 years ago
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The equation of a sphere is:

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Using the midpoint formula, the coordinate of the center is:

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we plug in any point, in this case point P to solve for r:

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So the full equation is:

<span>(x – 1)^2 + (y – 1)^2 + (z - 6.5)^2 = 61.25</span>

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Answer:

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Step-by-step explanation:

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