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timofeeve [1]
3 years ago
9

If 100% of a number is 15, then what is 50% of the number?

Mathematics
2 answers:
lbvjy [14]3 years ago
7 0

Answer:

7.5

Step-by-step explanation:

One way in which you could do this problem would be to write and solve an equation of ratios:


100%          15

---------  = ----------

 50%            x

Cross multipying results in 100x = 750, so that x = 7.5.

50% of the number is 7.5.

LuckyWell [14K]3 years ago
6 0

Answer:

The answer is 7.5.

Step-by-step explanation:

Since we're looking for half of 15, divide 15 by 2 (or multiply 15 by 0.5, it's the same thing) and you get 7.5.


I hope this helped! :)

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Answer:

0.513 = 51.3% probability of being a female.

Step-by-step explanation:

We are given the following formula:

P(F \cup C) = P(F) + P(C) - P(F \cap C)

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We have to find P(F), which is given by:

P(F) = P(F \cup C) + P(F \cap C) - P(C)

We are given by:

P(C) = 0.039, P(F \cap C) = 0.004, P(F \cup C) = 0.548

So

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Step-by-step explanation:

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The length of a rectangle is 1 inch less than twice the width. the area is 21 inches^2 what is the length?
ale4655 [162]
Hi.

Formula for area: A = 2l + 2w, where l is the length and w is the width.

Given information:
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We can plug in our values accordingly and solve for w.

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Finally, check your work by plugging your values into the original equation.

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The length is approximately 6.66 inches.
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