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2 years ago

11

Kyla runs around a 400-meter track at a constant speed of 200 meters per minute. How many

2 answers:

Otrada [13]2 years ago

8 0

Answer: 8

Step-by-step explanation:

inn [45]2 years ago

5 0

Answer:

If i'm not wrong 8 minutes.

Step-by-step explanation:

If you add all the meters together its adds up to 1600. It says you run 200 meters per minute so it will take 8 minutes to run around the track 4 times.

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The time that a randomly selected individual waits for an elevator in an office building has a uniform distribution over the int

rewona [7]

Answer:

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the population, we have that:

Mean = 0.5

Standard deviaiton = 0.289

Sample of 12

By the Central Limit Theorem

Mean = 0.5

Standard deviation $s = \frac{0.289}{\sqrt{12}} = 0.083$

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

4 0

2 years ago

F(5)-f(3) = x^2+7x-22

My name is Ann [436]

Answer:

your answer is going to be -158

Step-by-step explanation:

(5)-(3)^2+7×-22=-158

4 0

2 years ago

Ok so brainly wont let me post the questions so I'm putting them in the comments but 100 points and brainlyest to the person who

Degger [83]

Answer:

here are the answers

Step-by-step explanation:

Part A)

scientific notation ------>

standard notation ----->

Part B)

scientific notation ------>

standard notation ----->

Part C)

scientific notation ------>

standard notation ----->

Part D)

scientific notation ------>

standard notation ----->

Part E)

scientific notation ------>

standard notation ----->

4 0

3 years ago

A cone has a height of 8 yards and a radius of 3 yards. What is its volume?

V125BC [204]

<h3>Given:</h3>

h= 8 yd
r= 3 yd

<h3>Note that:</h3>

h= Height
r= Radius

<h3>To find:</h3>

The volume of the given cone.

<h3>Solution:</h3>

$\large\boxed{Formula:V= \frac{1}{3}\pi{r}^{2}h}$

$\large\boxed{\red \pi \red = \red 3 \red . \red 1 \red 4}$

Let's solve!

Substitute the values according to the formula.

$V= \frac{1}{3}×3.14×{3}^{2}×8$

$\large\boxed{V= 75.36 \: {yd}^{3}}$

<u>Therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>volume</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>given</u><u> </u><u>cone</u><u> </u><u>is</u><u> </u><u>75.36</u><u> </u><u>cubic</u><u> </u><u>yards</u><u>.</u>

7 0

2 years ago

Which equation represents this number sentence? Two more than one-third of a number is 8. a. (2+1/3)n=8 b. 2+1/3n+8=0 c. 2=1/3n

Rina8888 [55]

Answer:

d

Step-by-step explanation:

let the number be n then one third of the number is

$\frac{1}{3}$ n and 2 more than this is

2 + $\frac{1}{3}$ n = 8 ( is 8 means = 8 ) → d

5 0

3 years ago