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Ghella [55]
3 years ago
11

3x(2x^2 + 6x + 8)it's polynomial​

Mathematics
1 answer:
Natalija [7]3 years ago
5 0

Hey! For these questions I'd reccomend m4thm4y. Ps I replaced the a with 4.

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The weekly salaries of sociologists in the United States are normally distributed and have a known population standard deviation
Lostsunrise [7]

Answer:

ME =z_{\alpha/2} \frac{\sigma}{\sqrt{n}}

The confidence level is 0.98 and the significance is \alpha=1-0.98 =0.02 and \alpha/2 =0.01 and the critical value using the table is:

z_{\alpha/2}= 2.326

And replacing we got:

ME=2.326 \frac{425}{\sqrt{22}}= 210.760\ approx 210.76

Step-by-step explanation:

For this case we have the following info given:

\sigma = 425 represent the population deviation

n =22 the sample size

\bar X =1520 represent the sample mean

We want to find the margin of error for the confidence interval for the population mean and we know that is given by:

ME =z_{\alpha/2} \frac{\sigma}{\sqrt{n}}

The confidence level is 0.98 and the significance is \alpha=1-0.98 =0.02 and \alpha/2 =0.01 and the critical value using the table is:

z_{\alpha/2}= 2.326

And replacing we got:

ME=2.326 \frac{425}{\sqrt{22}}= 210.760\ approx 210.76

3 0
3 years ago
In the diagram, ∠J ≅ ∠M and JL ≅ MR. What additional information is needed to show ΔJKL ≅ △MNR by SAS?
valentinak56 [21]

Answer:

You will have to find out if JK ≅ MN

Step-by-step explanation:

SAS means you have 2 sides that are congruent that connect to make the one angle congruent.

Due to the fact that JL ≅ MR the sides that are left to make up the angles ∠J and ∠M

8 0
3 years ago
Tameron is driving 540
Ludmilka [50]

Do 540 ÷ 45 as you're first step. Then multiply that by 3/4.

540÷4= 12.

<h2><em>12 × 3/4 = 9.                       Awnser</em>: 9</h2>
6 0
3 years ago
Read 2 more answers
An architect is making a scale model of a building. The model is 18.5 inches wide and 36.5 inches tall. If the actual building i
Nastasia [14]

Answer:

The height of the building is 730 feet.

Step-by-step explanation:

370 x 12 = 4,440 inches

4,440 ÷ 18.5 = 240 inches

240 x 36.5 = 8,760 inches = 730 feet

3 0
3 years ago
Milo walks 40 meters in 15 seconds and Mira walks 30 meters in 10 seconds. Who's walking rate is faster?
mestny [16]
Mira is walking faster because her pace is faster than Milo

7 0
3 years ago
Read 2 more answers
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