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uranmaximum [27]
3 years ago
13

2. A,B,C,D ? 3. A,B,C,D ?

Mathematics
1 answer:
Pani-rosa [81]3 years ago
5 0
2. A. Multiply the 3 terms together for the answer. 

3. B. Same here. 
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Can Someone Help With This Question Please
8090 [49]

4x²+x³

Factor is out x³ expression

The answer is :

{x}^{2}  \times (4 + 3x)

Carry learning!

8 0
3 years ago
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Richard and Stephen are marking exam papers. Each set takes Richard 73 minutes and
zheka24 [161]

Answer:

73:120 change 2 hours into minutes which is 120

8 0
3 years ago
A random sample of 400 Michigan State University (MSU) students were surveyed recently to determine an estimate for the proporti
Gre4nikov [31]

Answer:

a. .92

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 of the interval is:

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

The lower bound is the point estimate \pi subtracted by the margin of error.

The upper bound is the point estimate \pi added to the margin of error.

Point estimate:

The confidence interval is symmetric, so it is the mean between the two bounds.

In this problem:

\pi = \frac{0.372 + 0.458}{2} = 0.415

Sample of 400, which means that n = 400

Margin of error is the estimate subtracted by the lower bound. So M = 0.415 - 0.372 = 0.043

We have to find z.

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

0.043 = z\sqrt{\frac{0.415*0.585}{400}}

z = \frac{0.043\sqrt{400}}{\sqrt{0.415*0.585}}

z = 1.745

z = 1.745 has a pvalue of 0.96.

This means that:

1 - \frac{\alpha}{2} = 0.96

\frac{\alpha}{2} = 1 - 0.96

\frac{\alpha}{2} = 0.04

\alpha = 0.08

Confidence level:

1 - \alpha = 1 - 0.08 = 0.92

So the correct answer is:

a. .92

7 0
3 years ago
suppose there were 2 types of tickets to a show . advanced and same day adviced cost $30 . same day $25. for 1 performance 45 ti
VikaD [51]

30 x 30 + 25 x 15 = $1275

So,
30 tickets were sold from the $30 type, while 15 tickets were sold from the $25 type!

7 0
3 years ago
Please help (will mark brainliest!) <br> find the value of x and y
slamgirl [31]
4x + 2 = 62
4x = 62 - 2
4x = 60
x = 15

12y = 144
y = 12

A is the answer.
7 0
3 years ago
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