Answer:
52
Step-by-step explanation:
Vertical angles are equal
<a = <B
5x -28 = 3x+4
Subtract 3x from each side
5x-3x-28 = 3x+4-3x
2x-28 = 4
Add 28 to each side
2x-28+28 = 4+28
2x= 32
Divide by 2
2x/2 = 32/2
x = 16
<A = <B = 3x+4 = 3(16)+4 = 48+4 = 52
<h2>
Answer with explanation:-</h2>
Let be the population mean.
By considering the given information , we have
, since the alternative hypothesis is right tailed , so the test is right tail test.
Given : Sample size : n=64, which is a large sample (n>30) so we use z-test.
Sample mean :
Then, Standard deviation :
Test statistic for population mean :-
i.e.
P-value =
Since the p-value is less than the significance level , so we reject the null hypothesis that mean we can accept the alternative hypothesis.
Thus , we conclude that the true mean concentration can exceeds 22 blops .
Answer:
False if i'm wrong so sorry!!
Step-by-step explanation:
Answer:
volume=l×b×h=8.2×3.7×4.1=124.394in³