Step-by-step explanation:
Since 1 mi. equals 5,280 feet, you divide 5,280 by 2 to get half of a mile.
5,280 / 2 = 2,640 is half of a mile
Then add to get the answer:
5,280 + 2,640 = 7,920
Therefore, your answer is 7,920, 7,920 is 1.5 miles.
Answer:
x = 21
Step-by-step explanation:
-7 ( x + 1 ) - 3 = -8x + 11
-7x - 7 - 3 = -8x + 11
x = 7 + 3 + 11
x = 21
<h3>
Answer: 40 inches</h3>
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Explanation:
- x = first piece
- 2x = second piece, since its twice as long as the first
- 5x = third piece, since its five time as long as the first
x is some positive real number, and the units of each are in inches.
Add up the smaller pieces and we should get 64 inches back again
x+2x+5x = 64
8x = 64
x = 64/8
x = 8
The first piece is 8 inches long.
2x = 2*8 = 16 is the length of the second piece (in inches)
The third piece is 40 inches because 5x = 5*8 = 40
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Summary:
first = 8 inches
second = 16 inches
third = 40 inches
Check: 8+16+40 = 64, which confirms the answer
Answer:
The answer is x = -2
Step-by-step explanation:
Select 4 from 9, and 3 from 8. Multiply together.
C(9,4)*C(8,3)
=9!/(4!5!) * 8!/(3!5!)
=7056
