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KengaRu [80]
3 years ago
6

What the mean absolute deviation of 12-9-7-7-11-10-7 if the mean is 18

Mathematics
1 answer:
dybincka [34]3 years ago
8 0
<span>Mean Absolute Deviation (MAD): 1.7142857142857</span>
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Look at the expression below. (Math Problem Attached)
aleksklad [387]

Answer:

its 6x ,6 and 3(y+2)

Step-by-step explanation:

My ArT hErE yOu Go

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8 0
3 years ago
Please help! Thanks in advance.
alukav5142 [94]
In this problem, we need to plug in the given x values for f(x)=0 and find a and b.

When we plug in 1, we get: 2 \times {1}^{4} - 5 \times {1}^{3} - 14 \times {1}^{2} + a \times 1 + b = 0

Simplify:
2 - 5 - 14 + a + b = 0
- 17 + a + b = 0
a + b = 17

We got our first statement about the values of the variables. If we find one more we can find those 2 variables.

We have another given root: 4.

Plug it in:
2 \times {4}^{4} - 5 \times {4}^{3} - 14 \times {4}^{2} + a \times 4 + b = 0
512 - 320 - 224 + 4a + b = 0
- 32 + 4a + b = 0
4a + b = 32

Now we have our second one. We can combine them:
a + b = 17 \\ 4a + b = 32

I use elimination method which is easier here.

Multiply the top equation by -1: - a - b = - 17 \\ 4a + b = 32

Add them up:
3a = 15

Simplify:
a = 5

Now we have a, we can plug in one of those equations to find b:
5 + b = 17
b = 17 - 5
b = 12

So, the answers are a=5 and b=12 .
6 0
3 years ago
Explain how you did it!
Sergio [31]
Ratio s 3:8
other one is x:12

3:8=x:12
3/8=x/12
times both sides by 12
36/8=x
4 and 4/8=x
4.5=x
4 and 1/2=x

J is answer
5 0
3 years ago
How do i write 7.6% as a fraction in simplest form and as a decimal?
egoroff_w [7]
You would move the decimal point two times to the left for the decimal. 0.076
For the fraction, we would make it 76/1000 because the 6 converted in the decimal is in the thousandth place. We can simplify it and get 19/250.
6 0
3 years ago
Read 2 more answers
HELPP WILL GIVE BRAINLIEST<br> Solve for w x y THANK YOU
Anvisha [2.4K]

Answer:

w=120°

x=45°

y=30°

Step-by-step explanation:

AT=PR, AR=PT

Therefore, y=30°

y+45°=x+30°

x=45°

In triangle:

y+30°+w=180°

w=120°

Hope it helps! :)

4 0
2 years ago
Read 2 more answers
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