Answer:
She gave away 12, so she still has 4.
Step-by-step explanation:
16 times .75 equals 12.
Well take 500 and subtract the 236 then divide the rest by two and the answer should be 132
It is A. ....... i wish you had a whole chart
Answer: 37
Step-by-step explanation:
Given : Significance level : 
Critical value : 
margin of error : E= 1 mile per gallon
Population standard deviation:
miles per gallon.
We know that when the population standard deviation is known then the formula to find the sample size is given by :

[Round to the next whole number.]
Hence, the required number of automobiles should be used in the test = 37
Answer:
2x+20+3x+10 = 180 (int. angles, parallel)
5x+30 = 180
5x=150
x=30