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dolphi86 [110]
2 years ago
11

Two cars leave towns 340 kilometers apart at the same time and travel toward each other. One car's rate is 14 kilometers per hou

r more than the other's. If they meet in 2 hours, what is the rate of the slower car?
Mathematics
1 answer:
Nana76 [90]2 years ago
6 0

Answer:

  78 km/h

Step-by-step explanation:

Let s represent the speed of the slower car. The total speed of the two cars is their closing speed:

  (s) + (s+14 km/h) = (340 km)/(2 h)

  2s + 14 km/h = 170 km/h . . . . . simplify

  s + 7 km/h = 85 km/h . . . . . . . . divide by 2

  s = 78 km/h . . . . . . . . . . . . . . . . subtract 7 km/h

The rate of the slower car is 78 km/h.

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kondor19780726 [428]

Answer:

See below.

Step-by-step explanation:

Part A:

For Dog walking, he earns $30 for 5 hours of work.

He earns $36 for 6 hours of work.

$30/5 hours = $6/hour

$36/6 hours = $6/hour

He earns $6/hour dog walking.

For 8 hours, he earns 8 hours * $6/hour = $48

To earn $66, he works 66/6 = 11 hours.

5 30

6 36

8 48

11 66

Part B:

He earns $7/hour for yard work, so multiply the number of hours by 7 to find the money he earns.

Table for yard work

Hours     Money

5             $35

6             $42

8             $56

Part C:

For 5 hours, he earns $35 for yard work and $30 as a dog walker.

$35 - $30 = $5

3 0
3 years ago
he tallest player on a basketball team is 167.64 centimeters tall. Height in inches is found by dividing height in centimeters b
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                 (167.64 cm)  ·  (1 inch / 2.54 cm)                         

             =    (167.64 · 1 / 2.54)    inches

             =        66.0 inches

3 0
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Gennadij [26K]
Hi there

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Hope I helped <3
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Please help with math homework
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Answer:

B,C,D,and E

Step-by-step explanation:

Since the triangles are equilateral and all of their sides and angles are the same, answers B,C,D,and E would all apply.

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