Answer:
i think its c (Im not 100% sure
Step-by-step explanation:
Given:
μ = 89 ng/ml, population mean
σ = 23 ng/ml, population standard deviation
Random variable, x = 100
To test P(x < 100), calculate the z-score.
z = (x-μ)/σ = (100 - 89)/23 = 0.4783
From standard tables, obtain
P(x < 100) = 0.6838 = 68.4%
Answer: 68.4%
9514 1404 393
Answer:
3042 in³
Step-by-step explanation:
The dimensions of the water are ...
19.5 in long × 12 in wide × 13 in tall
The volume in cubic inches is ...
V = LWH
V = (19.5 in)(12 in)(13 in) = 3042 in³
_____
At 231 cubic inches per gallon, that's about 13.17 gallons.
Answer:
9 and 6
Step-by-step explanation:
Write down the system.
The two numbers are x and y.
We are therefore given:
x+y=15
x-y=3
I will solve this for elimination since it is already setup for it.
I will add the columns since both equations are in the same form.
2x+0y=18
2x =18
Divide both sides by 2:
x =18/2
Simplify:
x =9
So if x+y=15 and x=9, then y=6.
The two numbers are 9 and 6.
Test:
9+6=15
9-6=3