The point-slope form:
The formula of a slope:
We have the points A(-2, 6) and B(2, -2). Substitute:
Answer:
The mean is 41
Step-by-step explanation:
Here , we are interested in finding the mean.
Firstly, let the standard deviation be x and the mean be y.
We are told that 51 is 2 standard deviations above the mean. What this mean is that if we subtract 2 standard deviations from 51, we will arrive at the mean.
Mathematically;
51 - 2(x) = y
y + 2x = 51 •••••••••(i)
We are also told that 36 is one standard deviation below the mean. What this mean is that if we subtract one standard deviation from the mean, we will have 36
Mathematically, that would be;
y-36 = x •••••••(ii)
Substitute ii into i directly;
We have
y + 2(y-36) = 51
y + 2y -72 = 51
3y -72 = 51
3y = 51 + 72
3y = 123
y = 123/3
y = 41
The correct answer should be Choice B.
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Answer:
the answer is 7x + 437
Step-by-step explanation:
1) 7 is the only number with a variable, <em>x</em>, so it will remain as it is.
2) -4+4= 0
3)1+1= 2
4) 2+435= 437
7) combine 7x and 437 together. 7x + 437.
We cant go any further, because 7x and 437 are not liketerms.
