Answer:
0
Step-by-step explanation:
8z +12 = 12
8z = 0
z =0
Answer: 
Step-by-step explanation:
Given
The ratio of mixture of sand and cement is 5:3
If the total volume of mixture is 
Suppose there is 5x and 3x cubic centimeter of sand and cement respectively i.e.

Sand 
So, there is
of sand in the mixture
G(2) = 2 + 4/3 = 10/3
f(g(x)) = f(g(2)) = (10/3)^2 + 20/3 + 3 = 187/9 = 20 7/9 answer
Answer:
40degres
Step-by-step explanation:
Answer:
4.038
Step-by-step explanation:
The simple regression model is:
, then
.
The statistic calculated for the hypothesis test of statistical significance, for the slope, in a simple regression model is given by:

with
the slope estimator,
the value of slope in the null hypothesis and
the standard error of the slope. Thus,
