All categories

3 years ago

My math problem is: X/8 + 6 = -8

Mathematics

1 answer:

lora16 [44]3 years ago

8 0

X=-112 because u do x/8+6=-8
-6 -6
x/8=-14
×8 ×8
x=-112

You might be interested in

Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of er

Vikentia [17]

Answer:

$ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1$

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".

$\bar X =69$ represent the sample mean for the sample

$\mu$ population mean

s=4.0 represent the sample standard deviation

n=64 represent the sample size

Assuming the X follows a normal distribution

$X \sim N(\mu, \sigma)$

The sample mean $\bar X$ have the following distribution:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

The margin of error for the sample mean is given by this formula:

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

Since we have the sample standard deviation we can estimate the margin of error like this:

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

The next step would be find the value of $\z_{\alpha/2}$ , $\alpha=1-0.95=0.05$ and $\alpha/2=0.025$

We can find the degrees of freedom like this:

$df=n-1=64-1=63$

And we can find the critical value with the following code in excel for example: "=T.INV(0.025,63)" and we got:

$t_{\alpha/2}=\pm 1.998$

And the margin of error would be :

$ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1$

3 0

3 years ago

Can somebody help me please ?

Maurinko [17]

Answer:

ik that angle one would be the same as 3 and 2 and 4 are also the same so if u find an answer for 2 or 4 they would be the same but is there like a total of the entire thing

7 0

3 years ago

Read 2 more answers

Helppppp on alllll plz

igomit [66]

a. $150

b. 150+20x $\geq$ 630

20x $\geq$ 480

x $\geq$ 24

c. 150+20x $\geq$ 750

20x $\geq$ 600

x $\geq$ 30

d. 150+20x $\leq$ 950

20x $\leq$ 800

x $\leq$ 40

Hope Your Thanksgiving Goes Well, Here's A Turkey

-TheKoolKid1O1

3 0

3 years ago

Type integer or fraction as answer simplify answer

vova2212 [387]

Answer:

51/28

Step-by-step explanation:

Start by making common denominators.

7 2

4 4

Now subtract the two.

7 - 2 = 5

Now you have to make common denominators for the second part, 4/7

16 + 35 = 51

28 28 28

brainliest is nice ig

7 0

3 years ago

PHOTO ABOVE (13x-57). (6x-10). Z. Find the values of x and z

Lera25 [3.4K]

X=13 and z=112
you know that (13x-57) + (6x-10) = 180 since they are supplementary, so you will solve that. it will give you x=13. now that you know x, you can solve for z by plugging in 13 for x on 13(x)-57 since that and angle z are congruent. when you simplify, you will get z=112.
you can check your answer by doing (6x-10) +112=180. this is because they are supplementary. you should get x=13, and that is how you know you are right.

4 0

3 years ago