3 years ago

Write and evaluate the expression. Then, check all that apply.

Mathematics

1 answer:

dlinn [17]3 years ago

8 0

Answer:

a-90

=102-90

=12

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the runner's time to complete the marathon is 45 minutes. The time to complete the last marathon was 49.5 minutes. What is the p

Lana71 [14]

Answer:

9.09%

Step-by-step explanation:

To find percent decrease you have to use this equation:

$Percent Decrease = \frac{Initial -New}{Initial} x 100$

Initial = 49.5

New = 45

Plug in and solve:

$PD = \frac{49.5-45}{49.5} x 100\\\\PD = \frac{4.5}{49.5} x 100 \\\\PD = 0.0909 x 100\\\\PD = 9.09$

The percent decrease is 9.09%

<em>Hope this helps!!</em>

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Write -14 as a decimal number and a fraction

Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

-14 = -14/1 = - 14.0

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pshichka [43]

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-miraculousfanx-

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3 years ago

Show all work please!!!!!!

sergij07 [2.7K]

The midpoint formula is:
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2) (-1 +5)/2 = 2
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3) Sqrt of (x2-x1)^2 + (y2 - y1)^2
     sqrt of (7 -1)^2 + (-7 - 1)^2
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