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Whitepunk [10]
3 years ago
5

A park ranger would like to clear more than 10 miles of trail. So far, he has cleared 2 miles. From now on, he can clear 3/4 mil

e of trail each hour
Mathematics
1 answer:
Scilla [17]3 years ago
6 0
It would take 7:30 minutes to clear the rest of the 10 miles.
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9,13,43,55 what is the mean absolute deviate (MAD) of their ages
lisov135 [29]

Answer:

The mean absolute deviation of this data \{9,13,43,55\} is MAD =19.

Step-by-step explanation:

The mean absolute deviation (MAD) of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.

The steps to find the MAD include:

  1. find the mean (average)
  2. find the difference between each data value and the mean
  3. take the absolute value of each difference
  4. find the mean (average) of these differences

To find the mean absolute deviation of this data \{9,13,43,55\} you must

Step 1: Calculate the mean.

\:mean=\bar{x}= \frac{9+13+43+55}{4} =\frac{120}{4}=30

Step 2: Calculate the distance between each data point and the mean and take the absolute value of each difference .

|9-30|=21\\|13-30|=17\\|43-30|=13\\|55-30|=25

Step 3: Add the distances together.

21+17+13+25=76

Step 4: Divide the sum by the number of data points.

MAD = \frac{76}{4} =19

7 0
4 years ago
I need help with this​
Digiron [165]

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6 0
3 years ago
2. <br> Find the area of the region bounded by the graphs of y = -x2 + 3x + 4 and y = 4. (5 points)
Kipish [7]

Answer:

4.5 sq. units

Step-by-step explanation:

area = -⅓x³+3/2 x² ] 0 to 3

= -⅓(3)³+ 3/2 (3)² -0

= -9 + 27/2

= -9 + 13.5

= 4.5 sq. units

8 0
3 years ago
Find a rational number that is between 9.5 and 9.7
Luba_88 [7]
9.5000032 is one such number
3 0
3 years ago
Read 2 more answers
If $7,000 is placed in an account with an annual interest rate of 5.5%, how long will it take the amount to triple if the intere
butalik [34]
A= P(1 + r/n) ^nt
21000=7000(1+0.055/2)^1t

t = 20.52 years

4 0
4 years ago
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