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Olin [163]
3 years ago
12

I need help on this please.......

Mathematics
2 answers:
blondinia [14]3 years ago
5 0

Answer:r;kf mf

Step-by-step explanation:r;kwmew

Olenka [21]3 years ago
4 0

Answer:

Your answer is A

Step-by-step explanation:

You have to multiply all the coordinates by 5

Hope this helps

plz mark brainliest

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A random sample of 12 recent college graduates reported an average starting salary of $54,000 with a standard deviation of $6,00
Marianna [84]

Answer: a.) $50188 to $57812

Step-by-step explanation: <u>Confidence</u> <u>Interval</u> (CI) is an interval of values in which we are confident the true mean is in.

The interval is calculated as

x ± z\frac{s}{\sqrt{n} }

a. For a 95% CI, z-value is 1.96.

Solving:

54,000 ± 1.96.\frac{6000}{\sqrt{12} }

54,000 ± 1.96\frac{6000}{3.464}

54,000 ± 1.96*1732.102

54,000 ± 3395

This means the interval is

50605 < μ < 57395

<u>With a 95% confidence interval, the mean starting salary of college graduates is between 50605 and 57395 or </u><u>from 50188 to 57812$.</u>

<u />

b. The mean starting salary for college students in 2017 is $50,516, which is in the confidence interval. Therefore, since we 95% sure the real mean is between 50188 and 57812, there was no significant change since 2017.

4 0
2 years ago
Help please <br><br><br><br> Show two different ways to factor<br> -2x - 10
Arada [10]
-2(x+5) OR 2(-x-5) I hope that helps if not please let me know!
3 0
3 years ago
What is 4 wholes and 2 3rds divided my 1 whole and w ninths
ira [324]

Answer:

Step-by-step explanation:

7 0
3 years ago
Please help I will mark Brainly
Bas_tet [7]

okay so you would go down to -8, then the slope would be 4/1 which means to go up four and then over one. then you have the line.


i hope this helps you!

8 0
3 years ago
Read 2 more answers
Find y’ for y=7sec^3x
laiz [17]
Taking the derivative of 7 times secant of x^3:
We take out 7 as a constant focus on secant (x^3)
To take the derivative, we use the chain rule, taking the derivative of the inside, bringing it out, and then the derivative of the original function. For example:
The derivative of x^3 is 3x^2, and the derivative of secant is tan(x) and sec(x).
Knowing this: secant (x^3) becomes tan(x^3) * sec(x^3) * 3x^2. We transform tan(x^3) into sin(x^3)/cos(x^3) since tan(x) = sin(x)/cos(x). Then secant(x^3) becomes 1/cos(x^3) since the secant is the reciprocal of the cosine.

We then multiply everything together to simplify:

sin(x^3) * 3x^2/ cos(x^3) * cos(x^3) becomes

3x^2 * sin(x^3)/(cos(x^3))^2

and multiplying the constant 7 from the beginning:

7 * 3x^2 = 21x^2, so...

our derivative is 21x^2 * sin(x^3)/(cos(x^3))^2


6 0
3 years ago
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