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3 years ago

HELP ASAP I WILL MARK BRANLIEST IF CORRECT Write a linear function f with f(5)=−1 and f(0)=−5

Mathematics

2 answers:

Kisachek [45]3 years ago

4 0

Answer:

Step-by-step explanation:

olga nikolaevna [1]3 years ago

3 0

Answer:

If you give some thought to the given facts, you will realize that f(5) = -1 means point (5,-1).

Similarly, there's a second point given.

Having two points enables you to find slope.

Then you can use the Point Slope form of the equation to write a formula for the line, involving x and y by using either of the ordered pairs as (x1, y1).

Solve for y, in terms of x, and then relabel that f(x)...because in graphs, y = f(x

Step-by-step explanation:

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Lina20 [59]

Answer:

B X=30

Step-by-step explanation:

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3 years ago

A certain gas station requires a minimum of $5 to use a debit card. You plan on buying a soda and however many bags of cheetos r

vekshin1

Answer:

1.20 + 1.40x ≥ 5, or $1.20 + $1.40x ≥ $5

Step-by-step explanation:

So since you are only buying 1 soda and you are buying multiple bags of Cheetos so you are able to use you debit card and meet the requirement of at least $5, you can make the inequality:

1.20 + 1.40x ≥ 5, or $1.20 + $1.40x ≥ $5

where x is the number of bags of Cheetos.

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3 years ago

Is 2/3 less or greater than 5/6

chubhunter [2.5K]

It's less than, 2/3 of 6 is 4, so 5/6 is greater.

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3 years ago

Read 2 more answers

Convert the following percent into common fractions in simplest form:

Rom4ik [11]

Answer:

Exact form:

16/3%

decimal form:

533.3

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4 years ago

Assume that you plan to use a significance level of alpha α equals =0.05 to test the claim that p 1 p1 equals = p 2 p2. Use the

stiks02 [169]

Answer:

z=3.536

$\hat p=0.204$

$p_v =2*P(Z>3.54)\approx 0.0004$

Step-by-step explanation:

1) Data given and notation

$X_{1}=172$ represent the number of people with the characteristic 1

$X_{2}=356$ represent the number of people with the characteristic 2

$n_{1}=677$ sample 1 selected

$n_{2}=3377$ sample 2 selected

$p_{1}=\frac{172}{677}=0.254$ represent the proportion estimated for the sample 1

$p_{2}=\frac{654}{3377}=0.194$ represent the proportion estimated for the sample 2

$\hat p$ represent the pooled estimate of p

z would represent the statistic (variable of interest)

$p_v$ represent the value for the test (variable of interest)

$\alpha=0.05$ significance level given

2) Concepts and formulas to use

We need to conduct a hypothesis in order to check if is there is a difference between the two proportions, the system of hypothesis would be:

Null hypothesis: $p_{1} = p_{2}$

Alternative hypothesis: $p_{1} \neq p_{2}$

We need to apply a z test to compare proportions, and the statistic is given by:

$z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}$ (1)

Where $\hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{172+654}{677+3377}=0.204$

z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

3) Calculate the statistic

Replacing in formula (1) the values obtained we got this:

$z=\frac{0.254-0.194}{\sqrt{0.204(1-0.204)(\frac{1}{677}+\frac{1}{3377})}}=3.536$

4) Statistical decision

Since is a two side test the p value would be:

$p_v =2*P(Z>3.54)\approx 0.0004$

Comparing the p value with the significance level given $\alpha=0.05$ we see that $p_v$ so we can conclude that we have enough evidence to to reject the null hypothesis, and we can say that the proportion analyzed is significantly different between the two groups.

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4 years ago