The answer: c. 24
1/2 x 24 = 12
You share only one distribution, so we'll focus on that one: mean: 30; std. dev.: 4.
Draw a "standard normal curve." Draw a vertical line in the exact middle of your curve. Label this line "30." Now "one standard dev. above the mean" is 30+4=34; "two std. devs. above the mean is 30+4+4=38, or 30+8=38. "three std. devs. above the mean is 30+3(4) = 42.
Now work in the other direction. Start with the mean: 30. But now subtract the std. dev. (4) instead of adding it. You'll get 30-4=26. This is "1 std. dev. below the mean. Continue: find 2 and 3 std. devs. below the mean.
Answer:
y=-1/3x+12
Step-by-step explanation:
To write a parallel first find the slope-intercept form of the first line- y=-1/3x+4
Then rewrite the equation with a y-intercept that will create a second line that passes through X on the graph.
(Although I believe this is right, please correct me if it is not. I, of course, could have made a mistake.)
Answer:
4
Step-by-step explanation:
5/1=5
4-4+4-5+5=4
1.a. correct
1.b. 
1.c. correct
1.d. 
2.a. 7 - x + 3w - 9
Terms: 7, -x, 3w, -9
Variables: x, w
Coefficients: -1, 3
Constants: 7, -9
2.b. -g + 8k - 3 - 7
Terms: -g, 8k, -3, -7
Variables: g, k
Coefficients: -1, 8
Constants: -3, -7
3.a. correct
3.b. correct
3.c. -5+ 4x = -x
4.a. 4(2x + 3) = 8x + 12
4.b. -2(3x + 4) = -6x - 8
4.c. -5(2x - 3) = -10x + 15
