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4 years ago

What are the coefficients in the polynomial 5x^2 + 2x - 4?

Mathematics

2 answers:

stiv31 [10]4 years ago

8 0

Answer:

I think the answer is A

Step-by-step explanation:

Sphinxa [80]4 years ago

6 0

A) 5, 2
Because a coefficient is the number in front of the variable, and the variable is x.

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we do is hiking along a trail that is 13.7 miles long. so far she has hide along 1/10 of the trail. how far has Rita hiked.

Westkost [7]

13.7*1/10=1.37 So far she has hiked 1.37 miles.

5 0

3 years ago

The amount of time it takes to see a doctor a CPT-Memorial is normally distributed with a mean of 33 minutes and a standard devi

Eva8 [605]

Answer:

a) Z-score = 0.75

b) Z-score = -32.833

Step-by-step explanation:

Step(i):-

Given that mean of the Population = 33

Given a standard deviation of the Population = 12

Let 'X' be a random variable in a normal distribution

Let 'X' = 42

Step(ii):-

$Z = \frac{x-mean}{S.D}$

$Z = \frac{42-33}{12} = 0.75$

Step(iii):-

Given that mean of the Population = 89

Given a standard deviation of the Population = 1

Let 'X' be a random variable in a normal distribution

Let 'X⁻ = 82

$Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{82-89}{\frac{1}{\sqrt{22} } } = -32.833$

Z-score = -32.833

7 0

3 years ago

Use the Parent function and Function 2 to choose the best statement comparing the graphs to each other.

kogti [31]

Answer:

the answer is A&d

Step-by-step explanation:

I took the quiz and got 100

3 0

3 years ago

The table shows the total time it took Samir to read 0,1,2, and 3 pages of the book. The table also list this information as ord

cluponka [151]

Ok, but where is the table???

8 0

4 years ago

Suppose that many large samples are taken from a population and that the

rewona [7]

Answer:

$0.22 -1 *0.029 =0.191$

$0.22 +1 *0.029 =0.249$

And the best option would be:

D. (0.191 to 0.249)

Step-by-step explanation:

For this case we know that the mean is:

$\bar X = 0.22$

And the standard error is given by:

$SE = 0.029$

We want to construct a 68% confidence interval so then the significance level would be :

$\alpha=1-0.68 = 0.32$ and $\alpha/2 =0.16$ . The confidence interval is given by:

$\bar X \pm z_{\alpha/2} SE$

Now we can find the critical value using the normal standard distribution and we got looking for a quantile who accumulate 0.16 of the area on each tail and we got:

$z_{\alpha/2}= 1$

And replacing we got:

$0.22 -1 *0.029 =0.191$

$0.22 +1 *0.029 =0.249$

And the best option would be:

D. (0.191 to 0.249)

5 0

3 years ago