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amm1812
3 years ago
11

Courtney walks 1 mph slower than Brandi does. In the time that it takes Brandi to walk 6.5 mi, Courtney walks 5 mi. Find the spe

ed of each person
Mathematics
1 answer:
posledela3 years ago
4 0

Answer:

Courtney's walking speed = 3.33mph

Brandi's walking speed = 4.33 mph

Step-by-step explanation:

Let x = Courtney's walking speed

then

(x + 1) = Brandi's walking speed

:

Time = Distance/speed

Brandi walks 6.5 mi time = Courtney walks 5 mi time

6.5/x + 1 = 5/x

Cross multiply

6.5x= 5(x+1)

6.5x= 5x + 5

6.5x - 5x = 5

1.5x = 5

x = 5/1.5

x = 3.33 mph is Courtney's walking speed

Note that:

(x + 1) = Brandi's walking speed

3.33mph + 1 = 4.33mph

Therefore,

Courtney's walking speed = 3.33mph

Brandi's walking speed = 4.33 mph

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Answer:

the means absolute deviation is 1.8

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Step-by-step explanation:

calculate the absolute deviation:

1.  calculate the mean (add all numbers and divide by 10) = 2.6

2.  find the absolute value of each

2.6 - 0 = 2.6

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4.  find the mean of the difference

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3 0
3 years ago
Cheyanne plans to put $150 into a savings account. She can place her money into an account represented by f(x) = 5x+150, or into
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In order to calculate the amount, we simply substitute the number of years into x in both equations.
After 3 years:
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3 years ago
in a given training week a swimmer completes 1/4 mile on day one 2/5 mile on day two    and 3/7 mile on day three,,            
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