All categories

3 years ago

Please help me! i really need it:( this is geometry btw

Mathematics

1 answer:

loris [4]3 years ago

7 0

Answer:

The answer is A

Step-by-step explanation:

I solved using surface area

You might be interested in

50% of babies are born female.Olive wants to find the probability 20 or more of the 50 babies born today were female. If we use

Anna [14]

Answer:

D. Keep track of the number of heads flipped in 50 flips. These represent the number of females born today. Repeat this 200 times.

3 0

3 years ago

Nerissa has 5 pink bows, 1 blue bow, and 4 purple bows in a box. She will randomly choose 1 bow from the box. What is the probab

Ilya [14]

Answer:

4/10 or 40% chance

6 0

2 years ago

Read 2 more answers

Can you use the Pythagorean theorem to relate thethree sides of this triangle?

irina1246 [14]

Answer:

You can use the Pythagorean Theorem to find the length of the hypotenuse of a right triangle if you know the length of the triangle's other two sides, called the legs. You can use the Pythagorean Theorem to find a value for the length of c, the hypotenuse.

6 0

3 years ago

Find the 50th term for the sequence 31,24, 17

Nikitich [7]

9514 1404 393

Answer:

-312

Step-by-step explanation:

The general term of an arithmetic sequence is ...

an = a1 +d(n -1)

Here, you have first term a1 = 31, and common difference d = 24-31 = -7. So, the 50th term is ...

a50 = 31 -7(50 -1) = 31 -7(49) = -312

The 50th term for the sequence is -312.

6 0

3 years ago

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determ

Hunter-Best [27]

Answer:

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

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 recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not.

This means that $n = 100, \pi = \frac{20}{100} = 0.2$

68% confidence level

So $\alpha = 0.32$ , z is the value of Z that has a pvalue of $1 - \frac{0.32}{2} = 0.84$ , so $Z = 0.995$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 - 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.16$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 + 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.24$

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

4 0

3 years ago

Please help me! i really need it:( this is geometry btw​

Please help me! i really need it:( this is geometry btw