10)

the park family is staying at a hotel near an amusement park for 3 nights the hotel cost $129 per night how much will there thre

ser-zykov [4K]

$129x=y
when x is the amount of night and y is the total cost
plug in 3 for x (3 days)
$129(3)=y
$387=y

Total cost would be $387

6 0

3 years ago

What is the shape of 6x2 when it is graphed?

jonny [76]

The expression 6x^2 will have the shape of a parabola when graphed

<h3>What are quadratic equations?</h3>

Quadratic equations are second-order polynomial equations and they have the form y = ax^2 + bx + c or y = a(x - h)^2 + k

<h3>How to determine the shape of 6x^2 when it is graphed?</h3>

The function expression is given as:

6x^2

Express the function as an equation.

So, we have

y = 6x^2

The above equation is a parabola or a quadratic equation.

All quadratic equations have the same shape and the shape is parabola

This means that the expression 6x^2 will have the shape of a parabola when graphed

Hence, the expression 6x^2 will have the shape of a parabola when graphed

Read more about quadratic equations at

brainly.com/question/1214333

#SPJ1

8 0

2 years ago

PLZ HELP ME! THIS IS MIDDLE SCHOOL LEVEL MATH!!!!

melomori [17]

This is true! Because in order to add you have to multiply 2 to the 1/2 fraction to both numerator and denominator. That would then make the fraction 2/4and 2+3 is 5and since the denominator doesn't change, it would be 5/4.

7 0

3 years ago

A car company says that the mean gas mileage for its luxury sedan is at least 24 miles per gallon (mpg). You believe the claim

Anastaziya [24]

Answer:

$t=\frac{23-24}{\frac{5}{\sqrt{5}}}=-0.447$

$p_v =P(t_{(4)}$

If we compare the p value and the significance level given $\alpha=0.1$ we see that $p_v>\alpha$ so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't reject the claim that the true mean is at least 24 mpg (null hypothesis) at 1% of signficance.

Step-by-step explanation:

Data given and notation

$\bar X=23$ represent the sample mean

$s=5$ represent the sample standard deviation for the sample

$n=5$ sample size

$\mu_o =24$ represent the value that we want to test

$\alpha=0.1$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

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

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is lower than 24 (rejecting the claim proposed), the system of hypothesis would be:

Null hypothesis: $\mu \geq 24$

Alternative hypothesis: $\mu < 24$

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$t=\frac{23-24}{\frac{5}{\sqrt{5}}}=-0.447$

P-value

The first step is calculate the degrees of freedom, on this case:

$df=n-1=5-1=4$

Since is a one sided test the p value would be:

$p_v =P(t_{(4)}$

Conclusion

If we compare the p value and the significance level given $\alpha=0.1$ we see that $p_v>\alpha$ so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't reject the claim that the true mean is at least 24 mpg at 1% of signficance.

5 0

3 years ago

Please help me! i would appreciate it

vagabundo [1.1K]

Answer:

hope this helps

Step-by-step explanation:

part.1

8 0

3 years ago