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sleet_krkn [62]
3 years ago
15

Two cars start at the same time, but travel in opposite directions. One car's average speed is 80 miles per hour (mph). At the e

nd of 4 hours, the two cars are 520 miles apart. Find the average speed in mph of the other car. (Enter an exact number.
Mathematics
1 answer:
Alinara [238K]3 years ago
6 0

Answer:

50 mph

Step-by-step explanation:

80 mph x 4 = 320 miles. so the first car went 320 miles

520 miles apart- 320 = 200 I subtracted the 320 miles so i can figure out how far the other car went.

200 / 4 hours = 50 mph

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2 years ago
Results of a poll stated that 40% of U.S. adults identify as Republican, and you want to test the claim at alpha = 0.05. What le
Nookie1986 [14]

Answer:

The confidence level is 95% or 0.95.

Step-by-step explanation:

Consider the provided information.

Results of a poll stated that 40% of U.S.

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As we know:

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Confidence level  = 0.95

Therefore, the confidence level is 95% or 0.95.

4 0
3 years ago
Matt has 11 white buttons. He has 9 fewer brown buttons than white buttons. Matt has 17 more grey buttons than brown buttons. Ho
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Answer: 32 buttons

Step-by-step explanation:

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The total number of buttons that Matt has will be;

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7 0
2 years ago
7x - 12 - 3x = 2(2x + 5)<br><br> Solve for 15 Points
emmainna [20.7K]

Answer:

x = Ø

Step-by-step explanation:

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4x = 4x + 22

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x = Ø

Hope this helps dude

8 0
3 years ago
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Answer:91

Step-by-step explanation:

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