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3 years ago

10

How is finding the surface area of a rectangular prism different from finding the surface area of a square pyramid

1 answer:

Softa [21]3 years ago

8 0

Answer:

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Step-by-step explanation:

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HELP PLEASE<br><br> What is the expression in radical form?

IgorLugansk [536]

Answer:

Step-by-step explanation:

$(2x^3y^4)^{\frac{3}{7}}=\sqrt[7]{(2x^3y^$)^3} =\sqrt[7]{8x^9y^3}$

6 0

3 years ago

In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there

yan [13]

Answer:

Explained below.

Step-by-step explanation:

According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normally.

Then, the mean of the sample means is given by,

$\mu_{\bar x}=\mu$

And the standard deviation of the sample means is given by,

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$

a

The expected value of the sample mean of their weights is same as the population mean, <em>μ</em> = 1515 lbs.

b

The standard deviation of the sampling distribution of the sample mean weight is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{25}{\sqrt{16}}=6.25$

c.

The average weights for a sample of 16 people will result in the total weight exceeding the weight limit of 2500 lbs. is:

$\text{Average Weight}=\frac{2500}{16}=156.25$

d

Compute the probability that a random sample of 16 persons on the elevator will exceed the weight limit as follows:

$P(\bar X > 156.25)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}>\frac{156.25-151}{6.25})\\\\=P(Z>0.84)\\\\=1-P(Z$

4 0

3 years ago

Brian, Pip and Sara share some sweets in the ratio 4:5:1. Brian gets 42 more sweets than Sara.

Leno4ka [110]

Answer:

i got 70

Step-by-step explanation:

Brain 4 Brain gets 42 more sweets Sara

Pip 5 How many sweets does Pip get?

Sara 1

when b = s + 42 find p b = 4s p = 5s

4s = s + 42 b/4 = s p = 5b/4

3s = 42

s = 14 b = 56 p = 70

I initially found the answer by trail and error, then I could figure out the equation.

s b p

1 4 5

10 40 50

16 64 90

14 56 70

8 0

3 years ago

How many numbers can be squared to get a value of 9?

Katena32 [7]

3 can be squared twice to get the value of 9. 3x3=9

5 0

4 years ago

Can someone please answer this ASAP it’s a quiz and I need to get a good grade on it I will give you five stars

sp2606 [1]

(A^2 + B^2 = C^2) —> (1600 + 39,204 = 40,804) —-> (square root 40,804) the answers is {{202}}

5 0

3 years ago