Answer:
Looks right to me! Great work!
That is incorrect because ariana is supposed to add the students in her classroom not multiply the girls and the boys.
We are to find for the probability when X≤400 or X≥500
We use the z score formula: z = (x – u) / s
when X≤400, the z is:
z = (400 – 500) / 100 = - 1
when X≥500, the z is:
z = (500 – 500) / 100 = 0
SO from the standard probability tables, the probability
at:
<span>P (z ≤ -1 or z ≥ 0) = 0.6587</span>
Answer:
-7/6, or answer choice A
Step-by-step explanation:
The slope is always going to be the number before x.
The rule is 1/2x=y
example:
2*1/2=1
1*1/2=0.5