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3 years ago

6v-6+2(3v+3)=-2(v+9)

Mathematics

1 answer:

ANEK [815]3 years ago

7 0

I’m pretty sure it’s 18, idk search it on google and it will tell u the answer

You might be interested in

8 to power -2 multiplied by a to power of 7

levacccp [35]

(8^ -2)(4^4)(16^ -1)


a^-x=(1/a^x)


 (4^4)/((8^2)(16))

"NOTE" 16^1=16


4^4=256

8^2=64

256/((64)(16))=1/4

convert 1/4 to a power of two

(4) is 2

1/4=1/(2^2)

1^2=1

(1/2)^2=(1/4)


1/2 to the power of 2 is the answer

It would look like this

1/2²

8 0

3 years ago

8. Which situation BEST represents an inverse variation ?

Mademuasel [1]

The correct answer is option D.

Explanation:

Inverse variation implies negative relationship. This means that as one of the quanties being compared increases the other decreases and vice versa..

4 0

1 year ago

PLEASE HELP!!!!!!!!!

Inessa05 [86]

It’s a 60 degree angle :)

6 0

3 years ago

How could I solve this ? 14 + k = 3k -2

Diano4ka-milaya [45]

Answer:

14 + k = 3k - 2

- k - k

14 = 2k - 2

+2 +2

16 = 2k

8 = k

Step-by-step explanation:

6 0

3 years ago

If the confidence level is 90%, find the Margin of sampling error. The population is normally distributed, the sample size is 15

charle [14.2K]

Answer:

$ME = 1.761* \frac{5}{\sqrt{15}}=2.273$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X= 75$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s=5 represent the sample standard deviation

n=15 represent the sample size

Solution to the problem

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=15-1=14$

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,14)".And we see that $t_{\alpha/2}=1.761$

The margin of error is given by this formula:

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

And if we replace the values we got:

$ME = 1.761* \frac{5}{\sqrt{15}}=2.273$

6 0

3 years ago