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KonstantinChe [14]
3 years ago
15

What % of 400 is 85?

Mathematics
1 answer:
quester [9]3 years ago
6 0
21.25% because 85/400 = .2125 which is 21.25%
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The area of a rectangle is 45.5 square inches. The base of the rectangle is 7 inches.
Otrada [13]

Answer:

That would be 6.5 inches.

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3 years ago
3/5 - 1/3 give your answer as a fraction in its simplest form
Step2247 [10]

Answer:4/15

Step-by-step explanation:

1. multiply and divide (left to right)3/5

=3/5-1/3

2.multiply and divide (left to right) 1/3

=3/5-1/3

3.add and subtract (left to right) 3/5-1.3:4/15

=4/15

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Math Help Please! (Show your work)
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3 years ago
The waiting time at an elevator is uniformly distributed between 30 and 200 seconds. What is the probability a rider must wait b
serg [7]

Answer:

17.65% probability a rider must wait between 1 minute and 1.5 minutes

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is between c and d is given by the following formula

P(c \leq X \leq d) = \frac{d - c}{b - a}

For this problem, we have that:

a = 30, b = 200, c = 1*60 = 60, d = 1.5*60 = 90

P(60 \leq X \leq 90) = \frac{90 - 60}{200 - 30} = 0.1765

17.65% probability a rider must wait between 1 minute and 1.5 minutes

7 0
3 years ago
5(4 − x) = −5x + 20 i need help
adoni [48]

Answer:

x=4

Step-by-step explanation:

-5(4-x)=-5x+20

We simplify the equation to the form, which is simple to understand

-5(4-x)=-5x+20

Reorder the terms in parentheses

+(-20+5x)=-5x+20

Remove unnecessary parentheses

-20+5x=-5x+20

We move all terms containing x to the left and all other terms to the right.

+5x+5x=+20+20

We simplify left and right side of the equation.

+10x=+40

We divide both sides of the equation by 10 to get x.

x=4

3 0
3 years ago
Read 2 more answers
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