Answer:
g = 1/2
Step-by-step explanation:
Step 1: Add 0.5g to both sides
9 + 4g = 11
Step 2: Subtract 9 from both sides
4g = 2
Step 3: Divide by 4 on both sides
g = 2/4
Step 4: Simplify
g = 1/2
Answer:
Which ones you need help with? All of it?
Step-by-step explanation:
You just need to find the circumference (the outside of the wheel) and then multiply that by how many times it turned
circumference is d* pi so your diameter 19/2 times pi (22/7) is about 29.86 ft
times that by 133 and you get exactly 3971 feet
Answer:
A sample of 179 is needed.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
That is z with a pvalue of 
, so Z = 1.44.
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
A previous study found that for an average family the variance is 1.69 gallon?
This means that 
If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?
A sample of n is needed, and n is found for M = 0.14. So
Rounding up
A sample of 179 is needed.
Answer: $6197.77 would be the right answer
hope it helps :]
