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3 years ago

11) Ms. Ripa's family is planning to come visiting her from New York. She hopes to take

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

5 0

$88

Explanation:
Adults $12x5 = 60
Child $7x 4=28
60+28=88

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(17, -6), (-11, 7)<br> Find the slope of the line.

kipiarov [429]

Answer:

slope = -13/28

Step-by-step explanation:

slope = (y2-y1)/(x2-x1) = (7-(-6))/(-11-(17) = 13/-28

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3 years ago

HELPPPP I will mark brainiest wow I can’t spell

stira [4]

Answer:

V= $\frac{28\pi }{3}$

Step-by-step explanation:

Plug and chug into the formula, your radius is 2ft, and your height is 7ft.

$V=\pi*2^{2} *\frac{7}{3}$

V= $\frac{28\pi }{3}$ or 29.30 if $\pi =3.14$

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3 years ago

estimate the number of first-year students at an assembly meeting. He surveys 60 students and finds that 24 of them are first-ye

bogdanovich [222]

Answer:

The values needed to calculate a confidence interval at the 95% confidence level are $z = 1.96, n = 60, \pi = \frac{24}{60} = 0.4$

The 95% confidence interval for the proportion of first-year students at an assembly meeting is (0.276, 0.524).

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:

$n = 60, \pi = \frac{24}{60} = 0.4$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The values needed to calculate a confidence interval at the 95% confidence level are $z = 1.96, n = 60, \pi = \frac{24}{60} = 0.4$

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 - 1.96\sqrt{\frac{0.4*0.6}{60}} = 0.276$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 + 1.96\sqrt{\frac{0.4*0.6}{60}} = 0.524$

The 95% confidence interval for the proportion of first-year students at an assembly meeting is (0.276, 0.524).

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3 years ago

ABC is an isosceles triangle with BA=BC

Nezavi [6.7K]

Answer:

step-by-step in attachment

Step-by-step explanation:

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3 years ago

Felice bought 3/4 of american cheese at the deli. She used 1/2 of the cheese to make sandwiches. How much cheese did she use?

Alex73 [517]

She used 2/4 pounds of cheese, or 8 ounces, or just a half-pound.

4 0

3 years ago