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rodikova [14]
3 years ago
10

Need help don’t understand what this is

Mathematics
1 answer:
IrinaVladis [17]3 years ago
3 0
Mean absolute deviation is the mean of the numbers and then the mean of that. 
Example: The data set 1,2,3,4,5,6 has mean of 3.5 now you subtract the mean from all the numbers in the data set thus getting the following, 2.5,1.5,.5, .5 , 1.5, 2.5. Then you find the mean of those numbers thus getting the mean absolute deviation. 
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What is the annual gross for a person who earns a weekly salary of $560? *<br> Your answer
aleksandr82 [10.1K]

Answer:

$29,220 per year

Step-by-step explanation:

$560 per week × 52.18 weeks = $29,220 per year.

6 0
3 years ago
Plz need to pass math quickly
umka2103 [35]
Its the second answer 
5 0
3 years ago
Can anyone please help me with this??? I really need it );
Nata [24]

Answer:

(x,y) (9,4)

Step-by-step explanation:

-2x+7y = 10

x -3y = -3 (move x to the other side)

-2x +7y = 10

x = -3 + 3y (put in for x)

-2 (-3 +3y) +7y =10 ( slove for y)

6-6y +7y = 10

6+y = 10

y = 10-6

y = 4

go back slove for x

x = -3+3x4

x = 9

8 0
2 years ago
How do I solve this equation by using the quadratic formula 3x^2-12x-27=-6
Natali [406]

Answer:

Move all terms to the left side of the equation and simplify.

3x²−12x−21=0

Use the quadratic formula to find the solutions.

(−b±√b²−4(ac))/2a

Substitute the values a=3, b=−12, and c=−21 into the quadratic formula and solve for x.

(12±√(−12)²−4⋅(3⋅−21)0/2⋅3 Simplify =>  x=2±√11

The result can be shown in multiple forms.

Exact Form: x=2±√11

Decimal Form: x=5.31662479…,−1.31662479…

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Jill's mother limited her xbox 1 playing to 10 hours per week. she played on only four days, a different amount of time each day
Brrunno [24]
You have to find out how much time she played on Saturday, Wednesday, Friday, and Sunday. Let's look at the facts.
Sunday: No info is given.
Friday: She played the least of all four days
Saturday: Twice as much as Wednesday
Wednesday: No info is given.

We can write a problem and solve from this information. Let's use the variable W for Wednesday. Saturday is 2W. So whatever number Wednesday has, multiply it by 2. All of the total numbers should equal 10.

Since Friday was played the least amount, we know that every other day has to be at least 2 hours or above, so that Friday can be 1 hour. Sunday we have no info given.

This is a bit of guess and see for this problem. Let's say that Friday was 1 hour, Wednesday was 2, Sunday was 3, and Saturday was 4. Total that equals 10. Let's check to varify that these numbers are correct.

Friday was the least amount of hours of any day, which is why it is 1.
Wednesday had 2 hours, and Saturday had twice that many, which is 4.
Sunday has 3 hours.

In short, your answer would be: Friday 1 hour, Wednesday 2 hours, Sunday 3 hours, and Saturday 4 hours. I hope I explained it wel
6 0
4 years ago
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