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Alekssandra [29.7K]
2 years ago
15

Twenty-one is 25% of what number? A. 5.25 B. 84 C. 10.5 D. 63

Mathematics
2 answers:
devlian [24]2 years ago
6 0
The answer is 84! 21+21+21+21=84 it’s just dividing by 4
musickatia [10]2 years ago
3 0

Answer: 84

Step-by-step explanation:

When substituting this question into an algebraic equation you can write it as:

21=.25x

(x clearly represents the number you are trying to find)

When you divide both sides by .25 to isolate x you get x=84

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I need the equation of the line in the graph
sattari [20]
First of all, we know that it's a linear equation, which means it'll have to be y=mx+b.

Identify your points.
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Now find the slope by doing 
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So the slope is 4/5 or 0.8.

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8 0
3 years ago
The hypotenuse of a right triangle is 4 feet
zaharov [31]

Answer:

514 feet

Step-by-step explanation:

Just simply use the pythagorean thereom:

a^2 +b^2 = c^2

put in the values of a, b, and c with the side lengths of the triangle:

x feet, 64 feet, and x+4 feet

x^2 +64^2 = (x+4)^2 , thus x =510

the hypotenuse = x+4 feet = 510 + 4 = 514

ANSWER: 514 feet

3 0
3 years ago
Hunter has a collection of 140 coins. How many coins represent 5% of his collection? Divide/scale down to solve for the missing
Novosadov [1.4K]

Answer:

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Step-by-step explanation:

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