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svetoff [14.1K]
2 years ago
7

NEED HELP WITH THIS ASAP!!

Mathematics
1 answer:
Len [333]2 years ago
8 0
It would be the third one
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Please help I’m not good at this
tia_tia [17]
23/4

Step by step:
5/1 + 3/4
5/1 • 4 = 20/4
20+3/4
23/4
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3 years ago
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a middle school is made up of grades 6,7, and 8, and has about the same number of male and female students in each grade. Explai
Inessa [10]
I don't really understand what it's asking
,but I think it wants me to see if it's correct or not

I think this is fully incorrect because there has to be one girl out of those 50 people and I also think that there are gonna be 5th and 6th graders in those 50 people too!
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Mr. Abernathy purchases a selection of wrenches for his shop. His bill was $78. He buys the same number of $1.50 and $2.50 wrenc
german
If it's a $1 more than what he pays it will be $5
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3 years ago
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Solve this system of equations by
Goshia [24]
Answer: x = 12 and y = -8

Explanation:
x + y = 4
4x + 3y = 24
———————
-3(x + y = 4)
4x + 3y = 24
———————-
-3x - 3y = -12
4x + 3y = 24
———————
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6 0
2 years ago
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Suppose the poll in the previous question was conducted by email, and those conducting the survey are concerned about the possib
mr_godi [17]

Answer:

Throw this sample out and start over again with a better sampling method

Step-by-step explanation:

Biased sampling leads wrong results, since the sample doesn't represent the population which is aimed to be surveyed. Higher/lower confidence level or t distribution cannot correct it.

Confidence level gives the probability of rejecting null hypothesis while it is true. And t-interval is used when the sample size is small or population standard deviation is unknown.

Before choosing confidence level or type of the statistic to infer results, one must follow random sampling not biased.

3 0
3 years ago
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