3(x-2)=15
Divide then by 3
X-2=5
Add 2
X=7
Answer:
B
Step-by-step explanation:
if you reflect a shape over the y axis all the numbers stay the same. The only thing that changes is the sign of the x values
so all of the values were positive in the preimage but now they're positive if that makes sense
Answer:
It would be 1/2
Step-by-step explanation:
y = (1/2)x has the format y = kx, where k is the const. of prop. In this particular case that const. of prop. is (1/2).
Answer:
The minimum sample size required is 25 so that margin of error is no more than 3 minutes.
Step-by-step explanation:
We are given the following in the question:
Mean, μ = 42 minutes
Standard Deviation, σ = 9 minutes.
We want to build a 90% confidence interval such that margin of error is no more than 3 minutes.
Formula for margin of error:


Putting values, we get.

Thus, the minimum sample size required is 25 so that margin of error is no more than 3 minutes.
I think its $920. Because its asking for the total price of the desk you should do 58 * 15 = 870 and then 870+50= 920.