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Tresset [83]
3 years ago
10

Someone plz help plz

Mathematics
1 answer:
Greeley [361]3 years ago
5 0

Answer: 22

Step-by-step explanation:

I’m not sure if hats number  is a 5.50 but if it is the answer would be 22 I think ^^  I might be wrong?

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Rafael is taking a test that contains a section of 12 true-false questions. how many of the possible groups of answers to these
stiv31 [10]
Answer: There are 495 possible different sets of answers the could contain exactly 8 correct answers of false.

Basically, we are looking for the number of different ways of selecting 8 objects out of a set of 12 objects. Our objects are answers of false and the set is the test.

This is a combination problem. The formula would be:

12! / (8! x 4!) = 495
5 0
3 years ago
Someone pls help will give brainliest
liberstina [14]
3. 60 divide by 360 times pi times (8)2=33.51 squared inch

4. 120divide by 360 times pi times (5 over 2)2=40.9 squared inch
5 0
3 years ago
Look at the question
tamaranim1 [39]
Your answer is:

B. subtract 10 to both sides

Hope it helps
Have a great day :)
Let me know if it’s correct
5 0
3 years ago
A company manufactures 2,000 units of its flagship product in a day. The quality control department takes a random sample of 40
shepuryov [24]

Answer:

B

Step-by-step explanation:

The recommended sample size n for point estimates is:

n = NX / (N + X - 1)

where N is the population size, and X is defined as:

X = Z² p (1 - p) / E²

where Z is the critical value, p is the sample proportion, and E is the margin of error.

Assume a confidence level of level of 95% and a margin of error of 5%.

α = 0.05, Z(α/2) = 1.96

E = 0.05

Of the 40 units tested, 2 had lifespans less than 26 days.  So the proportion is:

p = 2/40 = 0.05

Therefore:

X = (1.96)² (0.05) (1 - 0.05) / (0.05)²

X = 73

Given N = 2000:

n = (2000) (73) / (2000 + 73 - 1)

n = 70.45

Rounding, the recommended sample size is 70.

5 0
3 years ago
Read 2 more answers
What is the answer to Justin is 2 years older than one third Marcella's age?
stira [4]
Does it say Marcella's age?
3 0
3 years ago
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