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madam [21]
2 years ago
7

Terri gets most of her exercise by walking briskly. Last year she walked an average of 4.2 miles per day with a standard deviati

on of 1.2 miles per day. April swims for exercise last year she swam for a mean of 40 minutes per day with a standard deviation of 8 minutes per day. For the new year, both girls have resolved to exercise more. In January Terri walked an average of 6 miles per day while April swam for an average of one hour per day. Which girl is off to a better start relation to their results from the previous year?
Mathematics
1 answer:
Alinara [238K]2 years ago
3 0

Terri walked in her own 93rd percentile, while April swam in her own 99th percentile. April is off to a slightly better start.

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2 years ago
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The table below represents the distance of a car from its destination as a function of time: Time (hours) x Distance (miles) y 0
Trava [24]
X (Time in Hours)         y (Distance)
   0                                    900
   1                                     850
   2                                    800
   3                                    750

The y-intercept of this function would be the value of y when x = 0
Reading from the table, when x = 0, y = 900
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------------------------------------------------------------------------------------------------------------
PART B

The rate of change is calculated by finding the vertical and horizontal distance between two points

The decrease is the same value every time; for every hour, there's a decrease of 50 miles.

So, the rate of change is 50 miles per hour
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PART C

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The car reaches its destination when y = 0, so the value of x would be

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The domain of the function is 0 ≤ x ≤ 18

 
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