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Neporo4naja [7]
3 years ago
5

Please help i need answer and explanation.please help meee..

Mathematics
1 answer:
babunello [35]3 years ago
8 0

Answer:

90 an right angle

Step-by-step explanation:

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Find the percent of change. Round your answer to the nearest tenth of a percent, if
kozerog [31]

Answer: a. 14% decrease or 86% of the whole

B. 137.5% increase

Step-by-step explanation:

A. Divide new price by old price and you get .86, change that to a percent by multiplying by 100. That equals 86%, the percent of change would be the difference of 100% to 86%, which is 14%

B. Use above explanation but don’t find the difference. 77/56= 1.375, 1.375*100=137.5

8 0
2 years ago
What is equal to 4.2 kilometers
guapka [62]

Answer:

<h2>4,200 meters</h2><h3>How do you convert meters to kilometers formula?</h3><h3>Meters to Kilometers Conversion</h3>

1 Meter (m) is equal to 0.001 kilometer (km). To convert meters to km, multiply the meter value by 0.001 or divide by 1000. For example, to convert 100 m to km, multiply 100 by 0.001, that makes 0.1 km is 100m .

Step-by-step explanation:

Hope it is helpful.....

8 0
2 years ago
Pls <br> helppp<br><br><br> thanks!!!
True [87]

Answer:

64 inch³

Step-by-step explanation:

3 / 2 = 1.5 radius

1.5²x π x 10 = 22.5 π = volume

22.5 π x 9/10 = 20.25π of water

= 63.6172512352

3 0
3 years ago
Points 50
pogonyaev

-2x + 4.4 = 23.8

Subtract 4.4 from both sides

-2x = 19.4

Divide both sides by-2:

X = -9.7

Answer: C. -9.7

8 0
3 years ago
Read 2 more answers
It takes a new mail carrier 4 hours to deliver the mail on route a. It takes an experienced mail carrier 3 hours to do the same
Pani-rosa [81]

Answer: \frac{12}{7}\ \text{hours}

Step-by-step explanation:

Given

New mail carrier takes 4 hours for delivery i.e.

New mail carrier completes \frac{1}{4} part of work in 1 hour

Old mail carrier takes 3 hours for delivery  i.e.

mail carrier completes \frac{1}{3}  part of work in 1 hour

If they work together, they complete the work in x hours i.e.

\Rightarrow \dfrac{1}{x}=\dfrac{1}{4}+\dfrac{1}{3}\\\Rightarrow \dfrac{1}{x}=\dfrac{3+4}{12}\\\Rightarrow x=\dfrac{12}{7}\ \text{hours}

4 0
3 years ago
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