3 years ago

SOME ONE HELP ME WILL GIVE BRAINLIEST

Mathematics

1 answer:

makvit [3.9K]3 years ago

8 0

First answers is 2, 5, -0.2(-1/5), -0.5 (-1/2)

You might be interested in

Two of the angles in a triangle measure 8° and 13°. What is the measure of the third angle?

Mrrafil [7]

The measure of the third angle would be 159 degrees

5 0

3 years ago

Find the value of <img src="https://tex.z-dn.net/?f=f%20%282%29." id="TexFormula1" title="f (2)." alt="f (2)." align="absmiddle"

qaws [65]

what gas do plants release into the air ?

7 0

3 years ago

How much money does the average professional hockey fan spend on food at a single hockey game? That question was posed to 10 ra

Vinil7 [7]

Answer:

Now we have everything in order to replace into formula (1):

$18-2.262\frac{2.75}{\sqrt{10}}=16.03$

$18+2.262\frac{2.75}{\sqrt{10}}=19.97$

Step-by-step explanation:

Information given

$\bar X=18$ represent the sample mean

$\mu$ population mean (variable of interest)

s=2.75 represent the sample standard deviation

n=10 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=10-1=9$

The Confidence is 0.90 or 90%, the significance is $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical vaue would be $t_{\alpha/2}=2.262$

Now we have everything in order to replace into formula (1):

$18-2.262\frac{2.75}{\sqrt{10}}=16.03$

$18+2.262\frac{2.75}{\sqrt{10}}=19.97$

5 0

3 years ago

Find each product using the FOIL method <br><br> (6d-5)(4d-7)<br><br> Plz help!

Stells [14]

The answer is 24d^2-62d+35

4 0

3 years ago

A 180 ft long board is cut into 3 pieces. The second piece of

blagie [28]

Answer:

20 feet

Step-by-step explanation:

1st piece = x

2nd piece = 2x

3rd piece = 6x

x+2x+6x=180

9x=180

x=20

so the first piece is 20 feet, the second is 40, and the third is 120.

6 0

3 years ago

Read 2 more answers