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Alla [95]
4 years ago
15

PLEASE HELP ANSWER WITH ALL STEPS PLS

Mathematics
2 answers:
kupik [55]4 years ago
6 0
Hello.

Question 4:

-2.34n = -12.168
Divide both sides by -2.34;

n = 5.2 is your answer to #4 (Answer choice "C.)"

For Question 5:

-8c = 56
Divide both sides by -8 to solve for c;

c = -7 (remember your signs!) is your answer for #5 (Answer choice "C.)"

\frac{n}{-12.168} = -2; To solve for this, we need to multiply both sides by -12.168 to isolate and solve for our variable.

\frac{n}{-12.168} = -2; Multiply by -12.168

n = 24.336 (A negative multiplied by a negative results in a positive product.);

Your answer for #3 is n = 24.336 (Answer choice "B.)")

I hope this helps!
Deffense [45]4 years ago
5 0
Answers: 
3.) n = 24.336 

4.) n = 5.2 

5.) c = – 7 

Explanations: 

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3 years ago
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(18 + 4i) + (-11 + 23i) =<br> Express your answer in the form (a + bi).
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Answer:

7+27i

Step-by-step explanation:

(18+4i)+(-11+23i)

=18+4i-11+23i

=7+27i

8 0
3 years ago
Please help! I’ll also give brainliest! Thank you!
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Step-by-step explanation:

8 0
3 years ago
UCF is a major Metropolitan University located in Orlando Florida. UCF is advertising their bachelor in Economics with the stati
ludmilkaskok [199]

Answer:

There is not enough evidence to suggest that mean starting salary of a graduate with a bachelor in economics is different from $48,500.

Step-by-step explanation:

In this case we need to test whether the mean starting salary of a graduate with a bachelor in economics is $48,500.

The information provided are:

\bar x=\$43350\\s=\$15000\\n=50\\\alpha =0.01

The hypothesis for the test can be defined as follows:

<em>H</em>₀: The mean starting salary of a graduate with a bachelor in economics is $48,500, i.e. <em>μ</em> = 48500.

<em>Hₐ</em>: The mean starting salary of a graduate with a bachelor in economics is different from $48,500, i.e. <em>μ</em> ≠ 48500.

As the population standard deviation is not known we will use a t-test for single mean.

Compute the test statistic value as follows:

 t=\frac{\bar x-\mu}{s/\sqrt{n}}

   =\frac{43350-48500}{15000/\sqrt{50}}\\\\=-2.42773\\\\\approx -2.43

Thus, the test statistic value is -2.43.

Compute the p-value of the test as follows:

 p-value=2\times P(t_{49}>-2.43)=0.0188

*Use a t-table.

Thus, the p-value of the test is 0.0188.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

p-value = 0.0188 > α = 0.01

The null hypothesis will not be rejected at 1% level of significance.

Thus, concluding that there is not enough evidence to suggest that mean starting salary of a graduate with a bachelor in economics is different from $48,500.

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4 years ago
A) Graph the following two lines on the same rectangular coordinate system. Show all your working. You need to use the slope-int
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Graph a.

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graph b.

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e) at (6,-3) x=6 cuts into graph a

8 0
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