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goblinko [34]
3 years ago
15

7:

Mathematics
2 answers:
Goryan [66]3 years ago
8 0

Answer:

16

Step-by-step explanation:

20% = 0.20

80 x 0.20 = 16

P.S. Harry needs to study ;)

Andrei [34K]3 years ago
5 0

First turn 20% into a decimal by dividing it by 100.

20% ⇒ 0.20

Now multiply 80 by 0.20.

0.20 × 80 = 16

<h2>Answer:</h2>

<u>20% of 80 is 16, so Harry got </u><u>16 questions correct</u><u>.</u>

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The ratio of children to adults at the football game was 23. If there were 140 children at the football game,
inessss [21]

Answer:

Therefore, the number of adults at the football game was 6.

Step-by-step explanation:

Let A represents the number of adults and C represents the number of children.

Therefore, the ratio of children to adults is given as follows:

23:1 = C:A ....................... (1)

Since C = 140, this is substituted into equation (1) as follows:

23:1 = = 140:A ....................... (2)

Transforming equation (2) and solve for A, we have:

23 / (23 + 1) = 140 / (140 + A)

23 / 24 = 140 / (140 + A)

0.958333333333333 = 140 / (140 + A)

0.958333333333333 (140 + A) = 140

(0.958333333333333 * 140) + 0.958333333333333A = 140

134.166666666667 + 0.958333333333333A = 140

0.958333333333333A = 140 -134.166666666667

0.958333333333333A = 5.833333333333

A = 5.833333333333 / 0.958333333333333

A = 6.08695652173878

Rounding to a whole number, we have:

A = 6

Therefore, the number of adults at the football game was 6.

5 0
3 years ago
Find the area of the trapezoid. If the answer is not an integer, leave it in simplest radical form. The figure is not to scale
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Answer:

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Step-by-step explanation:

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Area of trapezoid = 150 ft²

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Step-by-step explanation:

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Step-by-step explanation:

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