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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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pickupchik [31]

The area of the regular nonagon is 270 sq cm.

Step-by-step explanation:

Given,

Each side of a regular nonagon (b) = 10 cm

The length of apothem (h) = 6 cm.

To find the area of the nonagon.

Formula

The area of a nonagon with b as each side and h as apothem is  = 9(\frac{1}{2}bh)

Now,

Putting the value of h and b we get,

Area = 9(\frac{1}{2}×10×6) sq cm = 270 sq cm

Hence, the area is 270 sq cm.

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Answer:

Here we have the domain:

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f(1) = 1 is the maximum in the range.

The range is:

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2) y = f(x) = 1/x.

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f(0) = 1/0 ---> ∞

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Then the range is:

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Notice that we do not have an upper bound.

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f(0) = 0^2 = 0

f(1) = 1^2 = 1

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0 < y < 1

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f(0) = 0^3 = 0

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0 < y < 1.

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