Answer:
2
Step-by-step explanation:
(4 - 5) - (13 - 18 + 2)
According to PEMDAS, we should simplify the parentheses first.
= (-1) - (-3)
When you subtract a negative number, you are actually adding.
= -1 + 3
Now, add.
= 2
Hope this helps!
Answer:
Step-by-step explanation:
We have to integrate the function
over the region
Let us convert into polar coordinates
x=cost : y = sint
Then we get dxdy = rdr dt
So we get the integral as
Substitute the limits to get
Answer
=
Answer: 28 in
Step-by-step explanation:
To find the perimeter we need to add all the sides
4 in + 6 in + 5 in + 6 in + 2 in + 5 in
28 in
The 95% confidence interval for a population mean has a margin of error (E) of 41
The confidence interval for a population mean is given by:
Confidence interval = μ ± E = (μ - E, μ + E)
Where μ is the mean and E is the margin of error.
Since the confidence interval is (428, 510), hence:
μ - E = 428 (1)
μ + E = 510 (2)
Subtracting equation 1 from equation 2:
2E = 82
E = 41
μ - E = 428
μ -41 = 428
μ = 469
Hence the margin of error (E) is 41
Find out more at: brainly.com/question/10501147
<h3>
Answer: D) $16.77</h3>
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Explanation:
The meter goes from 9854 to 0023. You can think of 0023 as 10023 (even though the meter only has 4 digits, so it rolls over to start over again).
So,
10023 - 9854 = 169
This means 169 kw hours of electricity are used for the month of December.
The first 100 kw hours costs $4.35
There are 169-100 = 69 kw hours left, and they cost $0.18 each, so we add on 69*0.18 = 12.42 getting 4.35 + 12.42 = 16.77
