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vlabodo [156]
3 years ago
6

Can someone help me with this question and show me the steps please -13+x=-25

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

x = -12

Step-by-step explanation:

-13+x=-25

Add 13 to each side

-13+13+x=-25+13

x = -12

Dmitrij [34]3 years ago
3 0

Answer:

x= -12

Step-by-step explanation:

-13+x=-25

+13     +13

   x= -12

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In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there
yan [13]

Answer:

Explained below.

Step-by-step explanation:

According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normally.  

Then, the mean of the sample means is given by,

\mu_{\bar x}=\mu

And the standard deviation of the sample means is given by,

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

a

The expected value of the sample mean of their weights is same as the population mean, <em>μ</em> = 1515 lbs.

b

The standard deviation of the sampling distribution of the sample mean weight is:

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{25}{\sqrt{16}}=6.25

c.

The average weights for a sample of 16 people will result in the total weight exceeding the weight limit of 2500 lbs. is:

\text{Average Weight}=\frac{2500}{16}=156.25

d

Compute the probability that a random sample of 16 persons on the elevator will exceed the weight limit as follows:

P(\bar X > 156.25)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}>\frac{156.25-151}{6.25})\\\\=P(Z>0.84)\\\\=1-P(Z

4 0
2 years ago
PLEASE PLEASE PLEASE HELP!!!!! 95 points!!!
zysi [14]

The "rule" being described here is nothing more than the input/output of a mathematical function.


For every input 'x' value supplied, you only need to subtract three to it. For every input 'y' value, you only need to add four to it.


Example: I'll use variable 'm' to represent this function. Variable 'p' will represent the current input point.


m(p) = p[x - 3, y + 4] = p[-7 - 3, 0 + 4] = p[-10, 4]. 'p[]" is just the point.

I tried my best hope that help!

5 0
3 years ago
Read 2 more answers
Find the value of x. 2(x-3)-17=13-3(x+2)
Nonamiya [84]
Solve your equation step-by-step.

2(x−3)−17=13−3(x+2)

Simplify both sides of the equation.

2(x−3)−17=13−3(x+2)

Simplify

2x−23=−3x+7

Add 3x to both sides.

2x−23+3x=−3x+7+3x

5x−23=7

Add 23 to both sides.

5x−23+23=7+23

5x=30

Divide both sides by 5.

5x/5 = 30/5

x=6

5 0
3 years ago
Read 2 more answers
25 ≥ 5u u = 5<br><br> True of false ( show work )
iris [78.8K]

Answer:

true

Step-by-step explanation:

plug in u. u=e

25>= 5x5

25>=25

true

6 0
3 years ago
Please answer this question now
Sever21 [200]

Answer:

82 degrees

Step-by-step explanation:

Measure of arc ABC = 86*2 = 172 degrees.

Measure of arc DC = 360 - (145+172) = 360-317 = 43 degrees.

Measure of arc BCD = 121+43 = 164 degrees.

Measure of angle A = 164/2 = 82 degrees

8 0
2 years ago
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