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irina1246 [14]
3 years ago
6

PLease help!!!!!!!!!!!!!!!!!!!!!!1

Mathematics
2 answers:
Andrew [12]3 years ago
5 0
4(5x-20)=-20
20x-80=-20 ======> Add 80 to both sides
20x-80+80=-20+80
20x=60======> Divide both sides by 20
20/20x=60/20
x=3
schepotkina [342]3 years ago
3 0
4(5x-20)= -20

20x-80= -20
      +80  +80
____________

20x=60
_______
      20

x=3
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3 years ago
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4 0
3 years ago
A rhino can run 28 miles per hour. What is that speed in feet per second, to the nearest whole number?
Mrrafil [7]

Answer:

A rhino runs at a speed of about 28 miles per hour.

We need to determine the speed in feet per second.

Converting miles to feet:

The miles can be converted to feet by multiplying 5280 with 28 miles per hour.

Thus, we have;

28 x 5280 = 14784028 × 5280 = 147840

Thus, the speed of the rhino in feet per hour is 147840

Converting hours to seconds:

The hours can be converted into seconds by dividing 147840 by 3600 (Because an hour has 60 seconds in a minute and 60 minutes in an hour)

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Rounding off to the nearest whole number, we get;

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6 0
3 years ago
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Zarrin [17]

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
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