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tensa zangetsu [6.8K]
3 years ago
15

Jordan is makinga garden

Mathematics
1 answer:
jeka943 years ago
3 0

Answer:

( x + 10 )

Step-by-step explanation:

→ Divide x² + 13x + 30 by x + 3

( x + 3 ) ( x + 10 )

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A math teacher was frustrated at the number of students leaving their graphing calculator behind in her classroom at the end of
AleksAgata [21]

Answer:

The 99% confidence interval for the proportion of all students at this school who have their names written on their graphing calculators is (0.4652, 0.8148).

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}.

A random sample of 50 students is selected, and of the students questioned, 32 had their names written on their graphing calculators.

This means that n = 50, \pi = \frac{32}{50} = 0.64

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.64 - 2.575\sqrt{\frac{0.64*0.36}{50}} = 0.4652

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.64 + 2.575\sqrt{\frac{0.64*0.36}{50}} = 0.8148

The 99% confidence interval for the proportion of all students at this school who have their names written on their graphing calculators is (0.4652, 0.8148).

8 0
3 years ago
Please answer this multiple choice question for 30 points and brainliest!!
mixer [17]

Answer:

  B.  s = 0.85r

Step-by-step explanation:

The sale price is 15% off the regular price. In equation form, that is ...

  s = r - 15%×r

  s = r(1 - 0.15) = 0.85r

The equation that can be used to calculate the sale price is <em>s = 0.85r</em>.

8 0
2 years ago
Round 5 358 708 to the nearest million​
bulgar [2K]

Answer:5 million

Step-by-step explanation: Because 300 thousand is below 500 thousand so if its below 500 thousand it cant round up it rounds down.

4 0
1 year ago
If answer is correct I will mark as brainliest.
Ilia_Sergeevich [38]

Answer:

No positive real solutions.So the answer is zero.

Step-by-step explanation:

8 0
2 years ago
John wants to join a gym so that he can work out during the evenings. There are two gyms in his town that he is considering. Ext
Y_Kistochka [10]

Answer:

It would be 4 months because with extreme fitness 10x4=40 then 40+50=90 then for ultimate fitness 15x4=60 then 60+30=90 so I took 4 months for both memberships to be the same

Step-by-step explanation:

Look at the answer above

3 0
2 years ago
Read 2 more answers
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