I’m pretty sure it’s the victim did not have a venomous bite, move the a^-4 up and the b^-4 down so the expression would be a^5a^4/b^4b^3, you would multiply them which makes you add the exponents which would make it a^9/b^7. Hope this helps :)
Answer:
54
Step-by-step explanation:
The circumcenter is the middle to each vertex. So since they gave you 9 in. and you have to go back and forth on each line, that is 18 in. per line. Considering there are three lines, add all of them together (Or multiple 18 by 3) to get 54 in.
Any other Prepworks questions? :)
Answer:
see below
Step-by-step explanation:
1.25 rounded to the nearest tenth : 1.3
2.784 rounded to the nearest hundredth : 2.78
Answer: 7 ft/sec
Step-by-step explanation:
To find the speed in feet per second, we divide distance by time.
=392/56= 7
Carter rode his bike at 7 ft/sec
Answer:
The minimum sample size needed is 125.
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:
For this problem, we have that:
99% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
What minimum sample size would be necessary in order ensure a margin of error of 10 percentage points (or less) if they use the prior estimate that 25 percent of the pick-axes are in need of repair?
This minimum sample size is n.
n is found when 
So
Rounding up
The minimum sample size needed is 125.
