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Volgvan
3 years ago
12

Can somebody please help me, i really didnt understand my teacher at all

Mathematics
1 answer:
Kamila [148]3 years ago
4 0

Answer:

Step-by-step explanation:

It is a solution because if you plug in 84 for b you get 84/12 = 7

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Katrina wants to estimate the proportion of adults who read at least 10 books last year. to do​ so, she obtains a simple random
Vaselesa [24]
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size

Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))

Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))

Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
3 0
3 years ago
Pls i need help in this
timurjin [86]
It’s a blank screen .. what’s the question ?
7 0
3 years ago
Please answer and explain.
djyliett [7]

Answer:

x = 13

Step-by-step explanation:

The sum of the exterior angles of a 4 sided polygon is 360

139+ 6x+9x+2x = 360

Combine like terms

139+17x=360

Subtract 139 from each side

17x = 360-139

17x = 221

Divide each side by 17

17x/17 = 221/17

x = 13

8 0
2 years ago
Read 2 more answers
Help. What’s the answer to this problem?
liq [111]

Answer:

C) Yes, it’s a reflection over line f.

Step-by-step explanation:

It’s a reflection over line f.

3 0
2 years ago
How do you solve this following inequality? T+6>-4
AysviL [449]
T+6>-4
T -6>-6
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T>-10
That is the answer

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3 years ago
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