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Allisa [31]
3 years ago
6

Len and Faye live 54 miles apart. At the same time, they start biking toward each other on the same road. Len's constant rate is

7 mph and Faye's is 11 mph. How many hours will it take them to meet?
A. 2
B. 3
C. 4
D. 5
Mathematics
2 answers:
Aloiza [94]3 years ago
5 0

Answer:

Step-by-step explanation:

Len and Faye live 54 miles apart. At the same time, they start biking toward each other on the same road. Len's constant rate is 7 mph and Faye's is 11 mph. How many hours will it take them to meet? [Remember: D = (r)(t)]

 Answer – 3 hours

 D = (r)(t), Where

‘D’ is the distance covered

‘r’ is the approach rate

‘t’ is the total time spent

 Distance covered, ‘D’ =  miles

Approach rate, “r” = mph + mph 7+11

r =  18

t is unknown

 Solving for t,

 D = (r)(t)

54 = 18t

t = 54/18

t = 3 hours

maria [59]3 years ago
5 0

Answer:

3

Step-by-step explanation:

I got it right on my test

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Answer:

The probability is 0.231

Step-by-step explanation:

In this question, we are tasked with calculating the probability that out of two cards drawn with replacement from a pack of cards , at least one of the two is a face card.

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There are 12 face cards in a pack of cards. There are 4 of each of Jack, Queen or King

The probability of drawing a face card is 12/52 = 3/13

Now, we want to calculate the probability of at least one of the cards drawn are face cards.

Mathematically, what we are needing to calculate is

Probability of drawing a single face card or probability of the two being a face card

Now let’s calculate.

The probability of the first card drawn being a face card is 3/13. The probability of the second card not being a face card will be 1-3/13 = 10/13

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8 0
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