First make bottom numbers the same
3/8 and 2/3
common multiple is 24
3/8 times 3/3=9/24
2/3 times 8/8=16/24
1/3 times 8/8=8/24
(9/24+16/24)+8/24
9+16+8=33
33/24= 1 and 9/24= 1 and 3/8=12/8
{1,3, 4,5, 3,4 and 5,6} but I’m not sure.
Let me answer those two questions in the reverse order.
1). How it can be solved:
7x + 5 = 3x - 11
Subtract 3x
from each side: 4x + 5 = - 11
Subtract 5
from each side: 4x = - 16
Divide each side
by 4 : x = - 4
2). The answer is x = - 4 .
-4 is called the 'solution' to the equation, because that's the number
that 'X' MUST be. If it's any other number, then the equation is not
a true statement.
I think 32 is the answer there
Answer:
At least 1022 new moms should be recruited.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
95% confidence level
So , z is the value of Z that has a pvalue of , so .
How many individuals should the researcher recruit to participate in the study if the researcher wants to be 95% confident that the margin of error is no more than 3.0%?
At least n new moms should be recruited.
n is found when
Rounding up
At least 1022 new moms should be recruited.