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yan [13]
3 years ago
10

I need some help with this

Mathematics
1 answer:
natima [27]3 years ago
8 0

Answer:

8

Step-by-step explanation:

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Solve the system of equations 4x + 8y = 4 and —2x – 7y = -11 by combining<br> the equations.
masya89 [10]

Answer:the answer is six

Step-by-step explanation:

6 0
2 years ago
A die was rolled eight times. The rolls were 2, 2, 3, 4, 4, 5, 6, and 6. What is the mean absolute deviation for this data? A) 1
adoni [48]

Answer:

The correct option is A:

MAD = 1 + 1/4

Step-by-step explanation:

For a set of N elements {x₁, x₂, ..., xₙ}

The mean is calculated as:

M = \frac{x_1 + x_2 + ... + x_n}{N}

And the mean absolute deviation is calculated as:

MAD = \frac{Ix_1 - MI + Ix_2 - MI + ...+ IX_n - MI}{N}

Here we have the set of 8 elements:

{ 2, 2, 3, 4, 4, 5, 6, 6}

The mean of this set is:

M = (2 + 2 + 3 + 4 + 4 + 5 + 6 + 6)/8 = 4

Then the mean standard deviation is:

MAD = \frac{I2 - 4I + I2 - 4I + I3 - 4I + I4 - 4I + I4 - 4I + I5 - 4I + I6 - 4I + I6 - 4I}{8} = 10/8

If we simplify this, we get:

MAD = 10/8 = 5/4  = (4 + 1)/4 = 4/4 + 1/4 = 1 + 1/4

MAD = 1 + 1/4

The correct option is A.

6 0
2 years ago
Which inverse operation would you use to solve the equation x/6-4=8
Artist 52 [7]
Hi there!

To find x, you would need to use the inverse of subtraction (addition) and inverse of division (multiplication), since you'd need to isolate x to one side of the equation to set x equal to a number. 

Hope this helps!
3 0
2 years ago
In the coordinates of A are (-2,3) and the coordinates of B are (7,-1), find the length of AB
nekit [7.7K]

Answer:

√97

Step-by-step explanation:

5 0
3 years ago
3 X 5 power or 2
Ainat [17]
225 3x5 is 15 and to the power of 2 is 15x15 so multiply and you get 225 hope it helps
5 0
3 years ago
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