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Sveta_85 [38]
2 years ago
11

Kerri drives $150$ miles to visit her grandmother. She starts off driving $60$ miles per hour, but then encounters road construc

tion and has to drive $20$ miles per hour the rest of the way. If she spends the same amount of time at the faster speed as at the slower speed, then how many hours did her $150$-mile trip take in total?
Mathematics
1 answer:
andriy [413]2 years ago
5 0

Answer:

5 hours

Step-by-step explanation:

-150 miles in all

-75 miles per speed

<u>60 mph...</u>

60 miles per hour over 75 miles

75 miles ÷ 60 miles = 1.25 hours

<u>20 mph...</u>

20 miles per hour over 75 miles

75 miles ÷ 20 miles = 3.75 hours

<u>Total hours of driving...</u>

60 mph for 1.25 hours

20 mph for 3.75 hours

3.75 hours + 1.25 hours = 5 hours total

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Oksanka [162]
The statement is true.

P(A|B) is the probability of occurrence of event A, provided that(given that) event B has already occurred.

This is known as conditional probability. In conditional probability, the event on right side of the vertical bar (which is B in this case) is given to have already occurred (either we assume this, or some evidence is given about this) and we calculate the probability of event on left of the vertical bar (which is A in this case) based on this information. The formula of condition probability is:

P(A|B)= \frac{P(A*B)}{P(B)} 

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3 years ago
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lukranit [14]

Answer:

4

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At y = 4, both equations will have a corresponding x-value of 1.

Therefore, the value of y that that will make both equations have the same solution of x is 4.

7 0
3 years ago
The dot plot shows the number of hours, to the nearest
Hoochie [10]

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Seventh grade mean: 3.46

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Seventh grade median: 3.5

Step-by-step explanation: I just did the question

3 0
3 years ago
In the oak forest, 60 kids are playing capture the flag.That is 40 percent of all kids in the park.How many kids are in the park
Romashka [77]

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Step-by-step explanation:

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6 0
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Vladimir [108]
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So GDP will reach 2.2 trillion during the year 2027.
5 0
3 years ago
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