A= h (a+b)
solving for b:
solving for b:
Solve for b, i.e separate b in one side and the other terms in the other side
A = ah + bh
A - ah = bh
(A - ah) / h = b
I hope that helps!
Brittany wants to make cookies for the whole fourth grade. One batch of dough makes 2 dozen cookies. There are 68 fourth grader
2 answers:
Answer:
it is reasonable to say that Brittany will need more than two batches of dough
Step-by-step explanation:
Given:
one batch of dough makes 2 dozen of cookies
also,
1 dozen = 12 in numbers
thus,
2 dozen = 2 × 12 = 24 cookies
total number of students = 68
Now,
The total batch of dough required =
=
= 2.83
Hence,
the number of dough required i.e 2.83 > 2
therefore,
it is reasonable to say that Brittany will need more than two batches of dough
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Answer:
The 95% confidence interval for μ for the given situation is between 87.49 and 94.51.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 91 - 3.51 = 87.49
The upper end of the interval is the sample mean added to M. So it is 91 + 3.51 = 94.51
The 95% confidence interval for μ for the given situation is between 87.49 and 94.51.