Y = -1/2x + 4
x + 2y = -8
x + 2(-1/2x+4) = -8
x + -x + 8 = -8
8 = -8
There correct answer is "no solution"
Answer:
the answer is -6x-y
Step-by-step explanation:
I'm good at math
That would be 7 - 1 = 6 turning points
The expected completion time is μ = 40 weeks.
The random variable, X = 38 weeks (the probable time)
If the standard deviation is σ, then the z-score is z = (x - μ)/σ.
Let us test the given standard deviations.
When σ=1,
z = (38-40)/1 = -2
From standard tables,
P(x<=38) = P(z<=-2) = 0.0228 =2.3%
When σ=2,
z = (38*40)/2 = -1
P(x<=38) = P(z<=-1) = 0.1587 = 15.9%
When σ=4,
z = (38-40)/4 = -0.5
P(x<=38) = P(z<=-0.5) = 0.3085 = 30.9%
Answers:
z=1 => 2.3%
z=2 => 16% (approx)
z=4 => 31% (approx)
Answer:
d. 5.25
Step-by-step explanation:
make it into two fractions: 6/8 = x/7
solve for x by cross multiplying.
