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3 years ago

NEED ANSWERS STAT!

Mathematics

1 answer:

DochEvi [55]3 years ago

5 0

Answer:

13.75

Step-by-step explanation: :)

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Solve for m in D m/v, if D= 5.1 and v = 0.3 <br> the / is for a fraction.

laila [671]

5.1 = m/0.3
1.53 = m
Hope this helps!

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3 years ago

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4 years ago

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The polynomial f(x) is written in factored form:

Valentin [98]

Answer:

F(x)=(x-3)(x+8)(x-11)=0

(x-3)=0, (x+8)=0, (x-11)=0

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X=-8

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6 0

3 years ago

Which of the ratios below is equivalent to 3:5? Select all that apply.

antiseptic1488 [7]

Answer:

Step-by-step explanation:

3:5 is equivalent(equal) to 15:25.

15÷5 and 25÷5 is equal to 3:5.

Hope this helped!

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3 years ago

One hundred rats with mothers that were exposed to high levels of tobacco smoke during pregnancy were put through a simple maze.

Paul [167]

Answer:

The 90% confidence interval for pis (0.7342, 0.8658).

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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

100 rats mothers, 80 went right. So $n = 100, \pi = \frac{80}{100} = 0.8$

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 $Z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 - 1.645\sqrt{\frac{0.8*0.2}{100}} = 0.7342$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 + 1.645\sqrt{\frac{0.8*0.2}{100}} = 0.8658$

The 90% confidence interval for pis (0.7342, 0.8658).

3 0

3 years ago