Answer:
c
Step-by-step explanation:
19. square has 4
rhombus has 2
and the lat one has 3
20. Okay all you have to do to figure out the height is 64-8=56 and 56-4=52 so the height is 52. Hope this helped
Answer:
They should interview 1620 adults now.
Step-by-step explanation:
Margin of error of a confidence interval:
The margin of error of a confidence interval has the following format:

In which z is related to the confidence level,
is the standard deviation of the population and n is the size of the sample.
In this question:
z wont change, neither will 
We want to increase n as such the margin of error is reduced to one third.
We have that the margin of error is inversely proportional to the square root of the size of the sample, which means that for the margin of error to be reduced to one third, the sample size has to be multiplied by
. So
180*9 = 1620
They should interview 1620 adults now.
You need to rewrite this equation and then i can help
Answer:
Julie is 20
Janet is 23
Their brother is 12
Step-by-step explanation:
20+23+12=43+12=55