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3 years ago

Please help :) Thanks!

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

8 0

Answer:

Answer: A

Step-by-step explanation:

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Find the surface area of the rectangular prism

irina [24]

Answer:

d 100

Step-by-step explanation: 2(7*4)+2(4*2)+2(7*2)= 56+16+28=100

7 0

3 years ago

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Can someone help me pls

Drupady [299]

Answer:

150 degrees

Step-by-step explanation:

75 -----> 75 out of 360

360-75=285

285-75 will be divided by 2

210 divided by 2 equals 105

105 is the measure of the angle I think (lmk if its wrong)

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3 years ago

What is the next number in pattern from 2,9,28,65

galben [10]

Answer:

126

Step-by-step explanation:

2=1³+1

9=2³+1

28=3³+1

65=4³+1

=>5³+1=126

The rule is: n³+1

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3 years ago

Scores on a test are normally distributed with a mean of 70 and a standard deviation of 11.5. find p81, which separates the bott

choli [55]

Answer: The score p81 that separates the bottom 81% from the top 19% is 80.12

Step by step:

First, calculate the "z" value. Z is a normally distributed random variable with 0 mean and standard deviation 1. The score value corresponding to the desired percentile p81 can be determined from a z value as follows:

$z=\frac{s-\mu}{\sigma}\\z_{p81}=\frac{p_{81}-70}{11.5}\\\implies p_{81}=z_{p81}\cdot 11.5+70$

We use a z-table (check online) to find the z value for the 81-st percentile. I found $z_{p81}=0.88$ and so we use that value to calculate the score for the percentile:

$p_{81}=0.88\cdot 11.5+70=80.12$

The score p81 that separates the bottom 81% from the top 19% is 80.12

4 0

4 years ago

Solve the inequality.Explain all steps and Identify the properties used. n/-3 + 5>4

Virty [35]

N/-3>4-5
then you can just times by -3 to get n on it's own
n>-3(4-5)
n>-3*-1
n>3

4 0

4 years ago

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Please help :) Thanks! ​

Please help :) Thanks!