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Lynna [10]
3 years ago
10

FIRST ANSWER-ER GETS BRAINLIEST

Mathematics
2 answers:
creativ13 [48]3 years ago
5 0
She is not correct
20% of 15 is 3
You add 3 hours =add 20%
15 =100%
3=20%
18=120%
But it is not 120% more than 15.
It is 120% of 15
She worked 20% more
viktelen [127]3 years ago
3 0
That is correct. Since there are 168 hours in a week, 15 hours would be .09%, and 18 hours would be 0.11%. In proportion, 0.11 is .2 more than .09, which is equivalent to saying 120%.
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tia_tia [17]

Answer:

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Step-by-step explanation:

A = pi r^2 + 2 pi rh

First subtract pi r^2 from each side

A  - pi r^2= pi r^2 + 2 pi rh - pi r^2

A  - pi r^2=  2 pi rh

Now divide each side by 2pi r

(A  - pi r^2)/ 2 pi r=  2 pi rh / 2pi r

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3 years ago
If x = 3, calculate the value of: 2x2 + x
Molodets [167]
2x = 2 * 3 = 6

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Answer: 39
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3 years ago
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rodikova [14]

Answer:

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Step-by-step explanation:

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4 years ago
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Nat2105 [25]

Answer:

<u>x²-14x+48</u>

Step-by-step explanation:

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