3 years ago

Let f(x)=x^2+5x−8. What is the average rate of change from x = 2 to x = 6?

Mathematics

1 answer:

Savatey [412]3 years ago

3 0

And that is how you get your answer

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xP(x)00.2510.0520.1530.55Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal pl

Nookie1986 [14]

The Solution:

Given:

Required:

Find the standard deviation of the probability distribution.

Step 1:

Find the expected value of the probability distribution.

$E(x)=\mu=\sum_{i\mathop{=}0}^3x_iP_(x_i)$ $\begin{gathered} \mu=(0\times0.25)+(1\times0.05)+(2\times0.15)+(3\times0.55) \\ \\ \mu=0+0.05+0.30+1.65=2.0 \end{gathered}$

Step 2:

Find the standard deviation.

$Standard\text{ Deviation}=\sqrt{\sum_{i\mathop{=}0}^3(x_i-\mu)^2P_(x_i)}$ $=(0-2)^2(0.25)+(1-2)^2(0.05)+(2-2)^2(0.15)+(3-2)^2(0.55)$ $=4(0.25)+1(0.05)+0(0.15)+1(0.55)$ $=1+0.05+0+0.55=1.60$

Thus, the standard deviation is 1.60

Answer:

1.60

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1 year ago

Louise skip counts by 4 on a number line to find 5 x 4. How many jumps should she draw on the number line?

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3 years ago

You are 100m from the base of a tall building. If your feet are exactly 180m from the top of the building, how tall is the build

KatRina [158]

Answer:

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Step-by-step explanation:

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2 years ago

the distance around a square room measures 101 feet 7 inches. Estimate the length of each side of the room

iris [78.8K]

Answer:

304.75 inches

Step-by-step explanation:

Total distance = 101 feet 7 inches

Recall :

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Sides of a square are always equal

Number of sides = 4

Hence, length of each side = 1219 inches / 4 = 304.75 inches

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3 years ago

Let ​ f(x)=x^2+5x−8​. What is the average rate of change from x = 2 to x = 6?

Let f(x)=x^2+5x−8. What is the average rate of change from x = 2 to x = 6?