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3 years ago

3/6x + 9 = 8 what does x equal?

Mathematics

1 answer:

ANTONII [103]3 years ago

3 0

Most likely 3 times 6

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Can somebody help me? Thanks!

ICE Princess25 [194]

Answer: both our A

Step-by-step explanation:

8 0

3 years ago

Adult entrance fees to amusement parks in the United States are normally distributed with a population standard deviation of 2.5

kondor19780726 [428]

Answer: 1.509

Step-by-step explanation:

The formula of Margin of Error for (n<30):-

$E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : n= 22

Level of confidence = 0.99

Significance level : $\alpha=1-0.99=0.01$

Using the t-distribution table ,

Critical value : $t_{n-1, \alpha/2}=t_{21,0.005}= 2.831$

Standard deviation: $\sigma=\text{ 2.5 dollars }$

Then, we have

$E=( 2.831)\dfrac{2.5}{\sqrt{22}}\approx1.509$

Hence, the margin of error for a 99% confidence interval for the population mean =1.509

4 0

3 years ago

Find the length of PQ

PIT_PIT [208]

Answer:

C. About 8.6 Units

Step-by-step explanation:

Distance Formula

8 0

2 years ago

Find the value of x in each case.

velikii [3]

Answer:

x=11

Step-by-step explanation:

Due to angles DCA and CAB being Alternate Interior Angles, we know that they will be equal. This means that

$DCA=33$ °

Next, we can find the measure of the angle DCE.

Angles BCE and BCA are supplementary. This means that they will add together to be 180°

This means that 180-BCE=BCA

Which means $BCA=180-5x$

As all of the angles in a triangle must add together to be 180 degrees, we can set up the following equation

$33+180-5x+2x=180\\213-3x=180\\3x=33\\x=11$

3 0

3 years ago

Read 2 more answers

A road sign has the shape of an equilateral triangle. If the sides of the sign measure 25 in., what is the height of the sign to

Sever21 [200]

Answer: socratic app

Step-by-step explanation:

4 0

3 years ago