The desired number of children per family in the United States is now about two. Despite the availability of a number of contraceptive options, close to 50% of pregnancies in the United States are unplanned, and approximately 25% of babies born are unwanted at the time of birth.
C) Carla is totaling the money made at a student council car wash
Answer:
I think it is D
Step-by-step explanation:
If you divide 6 x 10^-2 by 2 x 10^-8 you get 3x10^-10 and then you make it into a whole number.
Answer:
0.0359
Step-by-step explanation:
Data provided:
mean values of three independent times are 15, 30, and 20 minutes
the standard deviations are 2, 1, and 1.6 minutes
Now,
New Mean = 15 + 30 + 25 = 65
Variance = ( standard deviation )²
or
Variance = 2² + 1² + 1.6² = 7.56
therefore,
Standard deviation = √variance
or
Standard deviation = 2.75
Thus,
Z-value = 
or
Z-value = - 1.81
from the Z-table
the Probability of Z ≤ -1.81 = 0.0359
Answer:
1: -80
3: 21.7
5: inf many solutions? (i cant do that one without a problem)
7: 21
9: - 2/3
11: 6 and 3/8
13: 0.4
15: inf many? (cant solve again)
Step-by-step explanation:
