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3 years ago

A.Give the function,find each value 1.Let k(x)=2x²-4x+6, a.find k(-2), and b.find k(2)

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

3 0

It is quite simple answer is this

1. 5
2. -6+4
3.13

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In a recent national survey, the mean price for a 2000 sq ft home in Florida is $240,000 with a standard deviation of $16,000. T

Doss [256]

Answer:

In both Florida and Ohio the house is 2.5 standard deviations from the mean.

Step-by-step explanation:

Z-score

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem:

The 200,000 house would be closer to the mean in the state in which the absolute value of the z-score is smaller.

Florida:

$\mu = 240000, \sigma = 16000$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{200000 - 240000}{16000}$

$Z = -2.5$

In Florida, a home priced at $200,000 is 2.5 standard deviations from the mean.

Ohio:

$\mu = 170000, \sigma = 12000$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{200000 - 170000}{12000}$

$Z = 2.5$

In Ohio, it is also 2.5 standard deviations from the mean.

In both Florida and Ohio the house is 2.5 standard deviations from the mean.

6 0

3 years ago

26 divided by 000.0000000009

Flura [38]

Answer:

undefined

Step-by-step explanation:

The expression contains a division by

The expression is undefined.

Undefined

7 0

4 years ago

Read 2 more answers

The cost of 6 team sweatshirts is $84.

oksian1 [2.3K]

Answer:

336

Step-by-step explanation:

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3 years ago

If g(x) = 3^(2x) then g'(2) is? A. 81 B. 162ln3 C. 81/ln3 D. 6/ln3 E. 6lin3

Alina [70]

$\bf a^{u(x)}\qquad \qquad \cfrac{df}{dx}=\cfrac{df}{du}\cdot \cfrac{du}{dx}\\\\
-----------------------------\\\\
g(x)=3^{2x}\qquad \qquad u=2x
\\\\\\
\cfrac{dg}{dx}=3^uln(3)\cdot \cfrac{du}{dx}\implies \cfrac{dg}{dx}=3^{2x}ln(3)\cdot 2
\\\\\\
g'(2)=3^{2\cdot 2}ln(3)\cdot 2\implies g'(2)=2\cdot 81ln(3)\implies g'(2)=162ln(3)$

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3 years ago

Martina finished her chemistry assignment in 2/5 hours. Then she completed her math assignment in 1/4 hrs. What was the total am

JulsSmile [24]

$\text {Total time spent :}$

$\dfrac{2}{5} + \dfrac{1}{4}$

$= \dfrac{2 \times 4}{5 \times 4} + \dfrac{1 \times 5}{4 \times 5}$

$= \dfrac{8}{20} + \dfrac{5}{20}$

$= \dfrac{13}{20} \text { hour}$

4 0

3 years ago

A.Give the function,find each value 1.Let k(x)=2x²-4x+6, a.find k(-2), and b.find k(2)​

A.Give the function,find each value 1.Let k(x)=2x²-4x+6, a.find k(-2), and b.find k(2)