<span>The mean for both processes is 28+17 = 45 minutes.
The variance is additive, so the total variance is 5+4 = 9. The standard deviation is the square root of variance, which is 3 minutes.
Then the z-score associated with a time of x = 50 minutes is:
z = (x - mean)/SD = (50 - 45)/3 = 1.67
From a z-table, the probability that (z > 1.67) is 0.0475.
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Answer:
40% decrease
Step-by-step explanation:
It is matter
Happy to help!
(Mark brainliest)
Answer:
100m^2
Step-by-step explanation:
All sides of a square are equal so 10m x 10m = 100m. The answer is 100m^2 because it is a 2D figure.
Answer:
I just googled it
Step-by-step explanation:
5
x
−
y
=
15
Add y to both sides of the equation.
5
x
=
15
+
y
Divide each term by 5 and simplify.
x=
3
+
y
5
