Given m||n find the value of x (7x-4) (5x+10)
2 answers:
Answer:
EITHER x = 7
OR x = 14.5
Step-by-step explanation:
When you have parallel lines and there's a third line crossing them, that makes 8 angles. 4 of these angles are ALL THE SAME MEASURE. and the other 4 angles are another number, but also ALL THE SAME MEASURE. And the two numbers add up to 180.
We kind of need to know where in the lay out of all 8 angles where are the ones you are working on. Because they are either the SAME VALUE or THEY ADD UP TO 180°
If they are the same, you set them equal to each other:
7x - 4 = 5x + 10
Subtract 5x
2x - 4 = 10
Add 4
2x = 14
Divide by 2
x = 7
OR
They add up to 180°
7x - 4 + 5x + 10 = 180
Combine like terms
12x + 6 = 180
Subtract 6
12x = 174
Divide by 12
x = 174/12 = 14.5
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Answer:
(1) The sample mean is = 6.98, the standard deviation is = 4.53 (2) The pint estimate difference is = 20.2 (3) The confidence interval limits are $ 15943.6 and $24456.4
Step-by-step explanation:
Solution
(A) The first step is to compute the mean sample and the standard deviation for private and public colleges.
Thus,
The mean and private colleges is computed as follows:
The mean and private colleges = The sum of derivation/The total number of observation
x= 42.5
The standard deviation is S₁ = 6.9806 = √∈ (xi - x)²/n-1
The mean of public colleges y =22.3
Standard deviation S₂ = 4.5323 = √∈ (yi - y)²/n-1
Thus,
S₁ = 6.98
S₂ =4.53
(b) We find the point estimate of the difference between two population means
Thus,
x -y = 42.5 -22.3
=20.2
Therefore, the annual cost is =$20,200
Note: Kindly find an attached copy of the option c and the complete question stated above.
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