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3 years ago

Which statements correctly use the properties of exponents to simplify? Check all that apply.

Mathematics

2 answers:

defon3 years ago

9 0

The first one, second, and third

Pie3 years ago

5 0

Answer:

1 2 and 3

Step-by-step explanation:

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UCF is a major Metropolitan University located in Orlando Florida. UCF is advertising their bachelor in Economics with the stati

Arlecino [84]

Answer:

The claim is rejected

Step-by-step explanation:

Claim: UCF is advertising their bachelor in Economics with the statistic that the starting salary of a graduate with a bachelor in economics is $ 48,500 according to Payscale (2013-13).

Null hypothesis: $H_0: \mu = 48500$

Alternate hypothesis : $H_a : \mu \neq 48500$

n = 50

Since n is more than 30 .

So we will use Z test

x=43350

Standard deviation = 15000

$Z=\frac{x-\mu}{\frac{s}{\sqrt{n}}}\\Z=\frac{43350-48500}{\frac{15000}{\sqrt{50}}}\\Z=-2.42$

Refer the z table

p value = 0.00776

$\alpha = 0.01$

p value < $\alpha$

So, We are failed to accept null hypothesis

Hence The claim is rejected

5 0

3 years ago

.At Phil’s work, there are 12 part-time workers and 18 full-time workers. What is the ratio of part-time workers to total worker

Scrat [10]

Answer:

2/5

Step-by-step explanation:

The desired ratio is ...

(part-time)/(total) = (part-time)/((part-time) +(full-time)) = 12/(12+18)

= 12/30 = 2/5

The ratio of part-time workers to total workers is 2 : 5.

7 0

3 years ago

Solve for x: 10 - 2x = -5x - 5<br> (1) X = -5<br> (3) X= 4<br> (2) x 15<br> (4)x= -15

Alekssandra [29.7K]

10 - 2x = -5x -5
+2x +2x
10 = -3x -5
+5 +5
15= -3x
X= -5

7 0

3 years ago

Read 2 more answers

What is the area of this rectangle?

Oksanka [162]

The area is 18 units squared, I believe.

4 0

3 years ago

Help with this picture too

vodka [1.7K]

Answer:

(6x+3)(6x-3)

Step-by-step explanation:

I used FOIL

Multiply the first numbers 6x*6x=36x^2

The outer -18x

Inner 18x which the outer and the inner cross out

Last 3*-3=-9

36x^2 -9

8 0

3 years ago

Read 2 more answers