X is equal to 23
15/3 = 5
36/3 = 12
39/3 = 13 then add the 10 and you get 23
Answer:
0.00135
Step-by-step explanation:
Given that a textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms.
H0: µ = 12 against H1: µ < 12
n =4
std error =
Mean difference
Test statistic t = mean diff/std error = -3
p value=0.00135 <0.05 our significance level
So reject H0
There is evidence to prove that mean is less than 12 kg.
let's say the breakfast price was "x", so that's the 100%, and we know she gave 20% of that and that is 1.80.
so, 1.80 is 20%, and "x" is the 100%, what is "x"?
Answer:
d. 36
Step-by-step explanation:
you would create a proportion of 11.5 over 34.5 then you would make it equal to 12 over x. Then cross multiply 34.5 by 12 to get 414. then you would divide this by 11.5 to get 36
7 & 9 square's make 130.49+81=130.