B is 5, you can solve this by first finding the value of a, which is 2, and then plug it into the other equation. 8+2=10 so we must also make the other side 10. We then do 10-5=5, 5 is the value of b
Answer:
20-2x=16
Divide all by 2
10-x=8
x=2,
Step-by-step explanation:
Perpendicular
Hope this helps!
Hey There!
The formula to calculate for surface area is
2(wh + lw + lh)
Let's plug these numbers in.
2(7*20 + 15*7 + 15*20)
Calculate
7 * 20 = 140
15 * 7 = 105
15 * 20 = 300
Add these numbers up
300 + 105 + 140
= 545
Multiply 545 * 2 = 1090
Therefore, the surface area of the figure would be 1090in
Hope this helped!
Answer:
t = [ (x1' - x2' ) - d ] / SE . p < 0.05 suggests means are equal, p > 0.05 suggests means are unequal.
Step-by-step explanation:
Null Hypothesis [H0] : There is no difference between average estimates of two garages, M1 = M2
Alternate Hypothesis [H1] : There is difference between average estimates of two garages, M1 ≠ M2
Hypothesis can be tested by t test
t = [ (x1' - x2' ) - d ] / SE , where :-
x1' & x2' are sample means, SE = sqrt[ (s1^2/n1) + (s2^2 /n2) ] , d is the hypothesized difference between population means, and SE is the standard error ie 0 here
If the p value corresponding to calculated t value is < p value as per significance level (0.05) : We reject null hypothesis & state that M1 ≠ M2
If the p value corresponding to calculated t value > p value as per significance level (0.05) : We accept null hypothesis & state that M1 = M2
