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3 years ago

Which of the statements is true regarding the graphed functions ?

Mathematics

1 answer:

DedPeter [7]3 years ago

6 0

F(x) means the function defined at that x value. It really just means what y value when x is equal to that input. So we can see clearly that A is false. They’re nearly opposite y values. B is also obviously false since the y values aren’t equal. C is the same case, the y values aren’t equal. D is true. When x = -2 for both functions, we can see the y value is the same. They also intercept, so that’s a pretty dead giveaway

D.)

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Use the Distributive Property and simplify the expression. 6+4(3x – 2)+5

Anon25 [30]

First, we need to use the distributive property to simplify the expression. So, that means we have to multiply the 4 by all of the integers and variables inside the parentheses.

If done correctly, your expression should be 6+12x-8+5

Next, we should combine all of the constant terms (just numbers without variables), also known as combining like terms.

If done correctly, your expression should be 12x+3.

This matches answer B. 12x+3

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3 years ago

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mash [69]

Combine the like terms to find your answer

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3 years ago

The chamber of commerce of a Florida Gulf Coast community advertises that area residential property is available at a mean cost

Alja [10]

Answer:

a) In the step-by-step explanation.

b) The null and alternative hypothesis are:

$H_0: \mu=125000\\\\H_a:\mu> 125000$

c) P-value = 0.015

d) The conclusion, at a level of significance of 0.05, is that there is enough evidence to support the claim that that area residential property is available at a mean cost significantly higher than $125,000 per lot.

e) The claim of the chamber of commerce is false. We have statistical evidence against that claim and we can conclude that the mean prices are significantly higher than $125,000.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim, expressed in the alternative hypothesis, is that area residential property is available at a mean cost significantly higher than $125,000 per lot.

Then, the null and alternative hypothesis are:

$H_0: \mu=125000\\\\H_a:\mu> 125000$

The significance level is 0.05.

The sample has a size n=32.

The sample mean is M=130000.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=12500.

The estimated standard error of the mean is computed using the formula:

$s_M=\dfrac{s}{\sqrt{n}}=\dfrac{12500}{\sqrt{32}}=2209.71$

Then, we can calculate the t-statistic as:

$t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{130000-125000}{2209.71}=\dfrac{5000}{2209.71}=2.26$

The degrees of freedom for this sample size are:

$df=n-1=32-1=31$

This test is a right-tailed test, with 31 degrees of freedom and t=2.26, so the P-value for this test is calculated as (using a t-table):

$\text{P-value}=P(t>2.26)=0.015$

As the P-value (0.015) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that that area residential property is available at a mean cost significantly higher than $125,000 per lot.

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3 years ago

Which is the correct equivalent for tan 310 degrees?

Dmitry [639]

C: tan 50 degrees that's your answer

4 0

3 years ago

Write 1/10 in hundredth,fraction,decimal

Ipatiy [6.2K]

0.10
1/10

Hope I helped!

Let me know if you need anything else!

<span>~ Zoe</span>

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3 years ago