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rewona [7]
3 years ago
15

The square of a number is 12 less than 7 times the number. What is the number

Mathematics
1 answer:
Elan Coil [88]3 years ago
4 0
You can put "3 or 4" which is in your multiple choice :)
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Answer the questions below. When you are finished, submit this assignment to your teacher by the due date for full credit. Total
Andrews [41]
Jill had a total score of 40 on 13 quizzes, so her average was
  40/13 ≈ 3.08

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1 quiz @ 1 = total of 1
3 quizzes @ 2 = total of 6
4 quizzes @ 3 = total of 12
4 quizzes @ 4 = total of 16
1 quiz @ 5 = total of 5
total score = 1 + 6 + 12 + 16 + 5 = 40
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3 years ago
Find the surface area.<br> 6 ft<br> 211<br> 3 ft
san4es73 [151]
It is 36 feet because 6 times 2 times 3 =36
3 0
3 years ago
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Suppose a production facility purchases a particular component part in large lots from a supplier. The production manager wants
musickatia [10]

Answer:

We need a sample size of at least 1161.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error for the interval is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

For this problem, we have that:

\pi = 0.22

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

How large a sample should she take?

We need a sample size of at least n.

n is found when M = 0.02

So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.645\sqrt{\frac{0.22*0.78}{n}}

0.02\sqrt{n} = 1.645\sqrt{0.22*0.78}

\sqrt{n} = \frac{1.645\sqrt{0.22*0.78}}{0.02}

(\sqrt{n})^{2} = (\frac{1.645\sqrt{0.22*0.78}}{0.02})^{2}

n = 1160.88

Rounding up

We need a sample size of at least 1161.

7 0
3 years ago
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IgorC [24]
The left side will always have 2 more than the right so it will akways be true
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The area of a square is 14 square centimeters. What is the length of one side of the square?
Alex17521 [72]

Answer: 7

Step-by-step explanation: if it a square then both side have to be same length so just divide 14 by 2 to get 7

hope this helps mark me brainliest please

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