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Vikki [24]
4 years ago
13

Need this ASAP: 2x - 10 over 4 = 3x A: -10 B: -1 C: 2 D: 11

Mathematics
1 answer:
Alex73 [517]4 years ago
3 0

(2x - 10) / 4 = 3x

12x = 2x - 10

10x = 10

x = -1   answer

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MatroZZZ [7]

Given :

On a number line, suppose the coordinate of A is 0, and AR = 15.

To Find :

the possible coordinates of the midpoint of AR.

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Now, mid-point of A(0) and R(-15) is M (-7/2).

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40 POINTS PLEASE HELP Joe and Bill are working on building a stone wall that will be 120 feet long. Joe works from one end and i
andrew-mc [135]

Answer:

26.67 hours or 26 hours and 40 minutes.

Step-by-step explanation:

To find out how long will it take for Joe and Bill to finish building the wall together, first find their individual work rates in feet per hour:

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B = \frac{10\ ft}{4 h} \\B = 2.5\frac{\ ft}{h}

Joe:

B = \frac{10\ ft}{5 h} \\B = 2.0\frac{\ ft}{h}

Their combined work rate is:

W =J+B\\W = 2.5\frac{\ ft}{h}+2.0\frac{\ ft}{h}\\W=4.5\frac{\ ft}{h}

Then, divide the total size of the wall by their work rate to find the time spent to finish it:

t = \frac{120\ ft}{2.5\frac{\ ft}{h}} \\t= 26.67\ h

3 0
4 years ago
It would take an hour for plane A to meet plane B. If the distance between them will be 200 miles in 45 minutes, how far are the
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Answer:  125 miles

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