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Elena-2011 [213]
3 years ago
8

What is the surface area if a cube whose edges are 13sqrt(5) cm?

Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0
By formula of surface area of cube
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Find the critical value of t for a sample size of 23 and a 99% confidence level. choose the correct value from below:
Kay [80]
We can find critical value by using t - table.
For using t - table we need degree of freedom and alpha either for two tailed test or one tailed test.
We can determine degree of freedom by subtracting sample size from one.
So in given question sample size is 23. So we can say degree of freedom(df) for sample size 23 is
df = 23 - 1= 22
Now we have to go on row for degree of freedom 22.

After that we need to find alpha either for two tailed test or one tailedl test.
Confidence level is 99%. We can convert it into decimal as 0.99.

So alpha for two tailed test is 100 - 0.99 = 0.01

Alpha for one tailed test is 0.01/2 = 0.005.

So we will go on column for 0.01 for two tailed test alpha or 0.005 for one tailed test alpha.
 SO the critical value 22 degree of freedom and 0.01 two tailed alpha is 2.819 from t - table.

8 0
3 years ago
Which of the following is an example of a wealth tax? a. income tax b. excise tax c. estate tax d. sales tax
9966 [12]
Income tax. it taxes you on how much you earn.
<span><span>In the UK:
     RATE                          TAX
Personal Allowance
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</span><span>Basic rate                  £11,501 to £45,000 20%
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6 0
3 years ago
Read 2 more answers
The formula for the volume of a pyramid is =13ℎ
victus00 [196]

Answer:

h = V3B

Step-by-step explanation:

V = 1/3B · h

Divide volume by 1/3 B to get h by itself

V/1/3B = V3B

6 0
4 years ago
a picture frame cube has a volume of 64 cubic cm. each of the six faces holds a picture of the same size as the face. what size
Alex

Answer:

Volume of a cube = side * side * side

length of 1 side = cube root of 64 = 4 cm

Therefore, each picture is 4 cm by 4 cm

Step-by-step explanation:

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3 years ago
Tasha claims that her skateboard weighs about 3 pounds. Is Tasha's claim reasonable? Explain.
Leto [7]
Her claim is reasonable because she can predict how much her skateboard weighs
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4 years ago
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