PLEASE HELP ASAP!!!!!!

What’s the answer and explain it please -

MariettaO [177]

Answer:

2.6

Step-by-step explanation:

The Mean Absolute Deviation (MAD) is the average amount that each point is from the overall average of the data set.

So, first find the overall average (also called the mean):

avg = (1 + 1 + 2 + 3 + 5 + 7 + 9) / 7

= 28 / 7

= 4

The average (mean) is 4, so now you calculate how far each point is from 4 and average those numbers:

Note: Remember to use absolute values, since distance can't be negative.

4 - 1 = 3

4 - 2 = 2

4 - 3 = 1

4 - 5 = |-1| = 1

4 - 7 = |-3| = 3

4 - 9 = |-5| = 5

And finally, average (or find the mean) the new data set:

avg = (1 + 1 + 2 + 3 + 3 + 3 + 5) / 7

so 18 / 7 is the MAD of the data set.

Finally, round it to the nearest tenth:

18 ÷ 7 = 2.57142857143 ≈ 2.6

7 0

3 years ago

Read 2 more answers

I need help, please and thank you. I know that you have to multiply the diameter by 2 to find the radius, but with the 9 pi, it

andrew11 [14]

Answer:

r=6

Step-by-step explanation:

The area of a circle is given by πr². Note that this uses the radius, not the diameter.

Now, one quarter of this area (ABC) is given to be 9π.

So apparently:

$\frac14 \pi r^2 = 9\pi$

If you solve this:

$\frac14 r^2 = 9$ (divide both sides by π)

$r^2 = 9\cdot4$ (multiply both sides by 4)

so

r = √36 = 6

so the radius is 6.

4 0

3 years ago

A builder has some red and grey bricks. The red bricks weigh 3 kilograms each, and the grey bricks weigh 2 kilograms each. If th

xxTIMURxx [149]

Answer: 3 red bricks and 4 grey bricks

<u>Step-by-step explanation:</u>

You have 17 kg total with weights of 3 kg and 2 kg.

Since 17 is an odd number, subtract one 3 kg weight to get an even #.

17 - 1(3 kg) = 14

14 ÷ 2 kg = 7

One 3 kg weight results in seven 2 kg weights = 8 total weights.

Since the given problem states that there are only seven weights, my guess was not correct.

Try Again:

Since we need and odd number of 3 kg weights, try three 3 kg weights

17 - 3(3 kg) = 8

8 ÷ 2 kg = 4

Three 3 kg weights and four 2 kg weights = 7 total weights. $\checkmark$

Note that this can be solved mathematically using a system of equations:

Weight: 3r + 2g = 17

Quantity: r + g = 7

5 0

3 years ago

Elena and Noah are each filling a bucket with water. Noah's bucket is 2/5

erma4kov [3.2K]

Answer:

2 because 2 mas dos usual a 4

Step-by-step explanation:

call lab I. dmlen

nslh

sh.

duo

23

rw

5 0

3 years ago

4x=-x+10<br> I’m confused?

Llana [10]

Answer:

x=2

Step-by-step explanation:

4x=-x+10

To find x, we first add x to each side to get rid of -x on the right side.

5x=10

Then, we divide each side by 5 to get x by itself.

x=2

And that's your answer :)

3 0

3 years ago