The probability that 1 girl and 2 boys will be selected is given by:

The correct answer choice is B. 1/2.
Answer:
I hope I'm right but not totally sure (0,0) and (1,2)
Step-by-step explanation:
Graph the line using the slope and y-intercept, or two points.
Slope: 2
y-intercept: 0
x y
0 0 <<<<< That's supposed to be a chart
1 2
Answer:
2y-10
Step-by-step explanation:
-2(7-y)+4
distribute:
=(-2)(7)+(-2)(-y)+4
= -14+2y+4
Combine like terms:
= -14+2y+4
=(2y)+(-14+4)
= 2y+-10
Answer:
0.7019; no, it does not appear to be safe.
Step-by-step explanation:
We want to find P(X > 185). However, in a z table, we are given the area under the curve to the left of the value; this means we want to find
1 - P(X ≤ 185)
The z score for the mean of a sample is given by

For this situation, the mean, μ, is 189 and the standard deviation, σ, is 39. Our sample size, n, is 27. This gives us
z = (185-189)/(39÷√27) = -4/(39÷5.1962) = -4/7.5055 = -0.53
Using a z table, we see that the area under the curve to the left of this value is 0.2981. This means our probability is
1-0.2981 = 0.7019.