What is the value of the expression - 7 x 3.67<br> Blank 1:

Luigi is an urban planner. as an independent contractor, he charges $140 fee plus $ 25 per hour for each contract with the city.

yaroslaw [1]

x = hours 25 per hour = 25x

y = total

so y = 25x +140

6 0

3 years ago

Read 2 more answers

5. Nhan is getting dressed. He considers two

Komok [63]

Answer:

slim to none. He has to wear his shoes

Step-by-step explanation:

I hope this helps

6 0

3 years ago

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Help please I feel stupid

deff fn [24]

Answer:

44

Step-by-step explanation:

h(-7) means use the expression labeled h and evaluate it for x=-7.

Like this:

(-7)^2 - 5

49 - 5

44

3 0

3 years ago

Which of these is the algebraic expression for "5 less than 6 times some number"?

Pachacha [2.7K]

The answer for the algebraic expression is 5-6t

7 0

3 years ago

An automobile manufacturer has given its van a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted t

Fynjy0 [20]

Answer:

$z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82$

The p value for this case would be given by:

$p_v =2*P(z$

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

Step-by-step explanation:

Information given

$\bar X=31.1$ represent the sample mean

$\sigma=1.3$ represent the population standard deviation

$n=140$ sample size

$\mu_o =31.3$ represent the value that we want to test

$\alpha=0.02$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to test if the true mean is equal to 31.3 MPG, the system of hypothesis would be:

Null hypothesis: $\mu =31.3$

Alternative hypothesis: $\mu \neq 31.3$

Since we know the population deviation, the statistic is given by

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing we got:

$z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82$

The p value for this case would be given by:

$p_v =2*P(z$

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

4 0

3 years ago

What is the value of the expression - 7 x 3.67 Blank 1: