B. The complement is the probability of an event NOT happening.
Lmâo your all on your own with this one
Answer:
20
Step-by-step explanation:
I assume y is 4/3 of z.
x = 7/6 y
y = 48
x = 7/6 * 48
x = 7 * 8
x = 56
y = 4/3 z
4/3 z = y
z = 3/4 y
z = 3/4 * 48
z = 36
x - z = 56 - 36 = 20
Average rate of change is just the slope between the 2 points
we can do this the long way or the smart way
long way, find the 2 points and find the slope between them
when x=-5, f(-5)=-2(-5)+1=10+1=11
when x=1, f(1)=-2(1)+1=-2+1=-1
so the points are (-5,11) and (1,-1)
the slope between them is (-1-11)/(1-(-5))=(-12)/(1+5)=-12/6=-2
the answer is B, -2
smart way
recognize that that is a linear equation and the slope between any 2 points will be the m in y=mx+b
f(x)=-2x+1
the slope is -2
the average rate of change is -2
answer is B. -2
Solve for x in 2x + 2y = 6
x = 3 - y
Substitute x = 3 - y into 3x - 5y = 25
9 - 8y = 25
Solve for y in 9 - 8y = 25
y = -2
Substitute y = -2 into x = 3 - y
x = 5
Thus,
<u>y = 5</u>
<u>y = -2</u>
