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vredina [299]
3 years ago
10

A painter rented a wallpaper steamer at 9 am and returned it at 4pm. He paid a total of 28.84. What is the rental cost per hour

Mathematics
2 answers:
serg [7]3 years ago
7 0

Answer:9 to 4 is 7 hrs divide 7 into 28.84 you get 4.12 so answer is $4.12 an hour

Step-by-step explanation:

lina2011 [118]3 years ago
4 0

Answer: $4.12 per hour

Step-by-step explanation:

Count the number of hours (7)

Divide 28.84 by 7 which gives you 4.12

Mark me as brainliest if this helps!

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A scientist measures a substance to be 0.6 grams. Calculate the percent of error in the measurement. Show all work for full cred
Anni [7]
A measurement of 0.6 grams means that the 'true' answer lies between
<span>0.55 and 0.65 </span>

In general, the uncertainty in a single measurement from a single instrument is half the least precise decimal given for the instrument.
The precision for this measurement is in the tenths place.
so we take 0.1 /2 = 0.05, and divide by the measurement

<span>0.05 / 0.6 = 0.08333 = 8.3 %</span>
6 0
3 years ago
A roll of 100 pennies is in the shape of a right cylinder. Each penny has a diameter of 0.75 inches and a thickness of 0.04 inch
zalisa [80]

Answer:

  • (B) π(0.75/2)²(4)

Step-by-step explanation:

<u>The volume formula:</u>

  • V = πr²h

<u>Given:</u>

  • d = 0.75 in ⇒ r = d/2 = 0.75/2 in
  • h = 0.04 in

<u>The volume of each penny:</u>

  • V = π(0.75/2)²(0.04)

<u>The volume of 100 pennies:</u>

  • V = 100*π(0.75/2)²(0.04) = π(0.75/2)²(4)

Correct choice is B

6 0
3 years ago
Read 2 more answers
Write and solve an equation to find the number: The sum of three times a number and 12 is 45.
Mamont248 [21]

Step-by-step explanation:

3x+12=45

3x=45-12

3x=33

3x/3=33/3

x=11

3 0
2 years ago
Read 2 more answers
3. Nina has $20.14 in her purse. She buys lunch<br> for $9.67. How much does she have left?
o-na [289]

Answer:

Nina has $10.47 left.

Step-by-step explanation:

$20.14 minus $9.67 is $10.47

6 0
3 years ago
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25to300 round to the nearest percent
mihalych1998 [28]

Answer:

163%

Step-by-step explanation:

Find in-between 25 and 300, which is 162.5 ,round to the nearest percentage being 163%. Hence your answer

8 0
2 years ago
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