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3 years ago

2. Evaluate the polynomial two ways: by substituting in the given

Mathematics

2 answers:

leonid [27]3 years ago

8 0

P(-3) = -2 i think that’s what it’s keeps giving me

natali 33 [55]3 years ago

7 0

Answer:

P(-3) = -2

Step-by-step explanation:

<u>Substitution</u>

P(-3) = 4(-3)^2 +10(-3) -8 = 36 -30 -8

P(-3) = -2

<u>Long Division</u>

See the working below. The remainder is -2, so ...

P(-3) = -2

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As a follow-up to a report on gas consumption, a consumer group conducted a study of SUV owners to estimate the mean mileage f

kondor19780726 [428]

Answer:

The 95% confidence interval estimate for the mean highway mileage for SUVs is (18.29mpg, 20.91mpg).

Step-by-step explanation:

Our sample size is 96.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

$df = 96-1 = 95$

Then, we need to subtract one by the confidence level $\alpha$ and divide by 2. So:

$\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025$

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 95 and 0.025 in the t-distribution table, we have $T = 1.9855$ .

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

$s = \frac{5.6}{\sqrt{96}} = 0.57$

Now, we multiply T and s

$M = T*s = 1.9855*0.57 = 1.31$

For the lower end of the interval, we subtract the mean by M. So $19.6 - 1.31 = 18.29$

For the upper end of the interval, we add the mean to M. So $19.6 + 1.31 = 20.91$

The 95% confidence interval estimate for the mean highway mileage for SUVs is (18.29mpg, 20.91mpg).

8 0

4 years ago

5 baseballs to 25 softballs in simplest form

sashaice [31]

Answer:

1/5

Step-by-step explanation:

5 baseballs to 25 softballs

1 baseballs to 5 softballs in simplest form

5 0

3 years ago

Read 2 more answers

I'm giving brainliest to best answer

Natali5045456 [20]

Answer:

2) 62.5 wpm

3) 12.7 miles per gallon

4)18 commercials per hour

5) 22.9 ounces per dollar

Step-by-step explanation:

2) 500 words / 8 minutes = 62.5 words per 1 minute

3) 216 miles / 17 gallons = 12.7 miles per gallon

4) 36 commercials / 2 hours = 18 commercials per hour

5) 64 oz / $2.79 = 22.9 oz per $1

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3 years ago

Show your mastery of converting between decimals, fractions and percents by answer the following questions.

kobusy [5.1K]

Question 1. I am assuming you meant 9/16, and in that case, the answer would be 0.5625. 9-16 is -7.
Question 2. 35.7% in decimal form is relative to what the percent is of. 35.7% of a million is different than 35.7% of one.
Question 3. Once again, this is relative as to what. Percentage of the weight of an elephant? It is important to specify in these types of equations.

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3 years ago

Fire katie shes spam deleting evreything on brainly

Mrrafil [7]

Answer:

Thank you so much. She has even deleted one of my questions before. I'll take care and beware.

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3 years ago