MATHEMATICS MIDDLE SCHOOL

Need answered ASAP!!!!!Which expression will produce a positive product?

(–12)(12)(–6.3)(–0.2)(–15.9)

(12)(12)(6.3)(0.2)(–15.9)

(12)(–6.3)(–0.2)(–15.9)

(–12)(12)(–6.3)(–0.2)(–15.9)(0)

Answers

Answer 1
Answer: Obviously, we need to solve each of the expression on a piece of paper to figure it out. I checked it out and this is what I got....


((((−12)(12))(−6.3))(−0.2))(−15.9)
=(((−144)(−6.3))(−0.2))(−15.9)
=(907.2)(−0.2)(−15.9)
=(−181.44)(−15.9)
=2884.896

Thats the first option. It came out Positive! :)




(12)(12)(6.3)(0.2)(−15.9)
=(144)(6.3)(0.2)(−15.9)
=(907.2)(0.2)(−15.9)
=(181.44)(−15.9)
=−2884.896

Thats the second option, it came out negative.


(12)(−6.3)(−0.2)(−15.9)
=((−75.6)(−0.2))(−15.9)
=(15.12)(−15.9)
=−240.408

Thats the third option, it came out negative



(((((−12)(12))(−6.3))(−0.2))(−15.9))(0)
=((((−144)(−6.3))(−0.2))(−15.9))(0)
=(907.2)(−0.2)(−15.9)(0)
=((−181.44)(−15.9))(0)
=(2884.896)(0)
=0

Thats the fouth option, it came out as Positive zero.

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I hope you are solving this with me right now ! Now YOU tell me what you think the answer is. Those are enough clues :)

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Answers

Answer:

The new volume is 1.63 L

Step-by-step explanation:

A tire pump has a volume of 1.5 L, while the temperature is 5 °C When the temperature changes to 30 °C, the volume will change as well.

The pressure remains constant.

Since the pressure is constant we can use the following formula:

V1/T1  = V2/T2

V1 = the initial volume = 1.5L

T1 = the initial temperature = 5 °C = 273.15 + 5 = 278.15 K

V2 = the final volume = TO BE DETERMINED

T2 = the final temperature = 30 °C = 273.15 + 30 = 303.15 K

1.5L/ 278.15 Kelvin = V2/303.15 K

V2 = (1.50L * 303.15 Kelvin) / 278.15 Kelvin = 1.63 L

When the temperature increased from 5°C to 30°C, the volume will change to 1.63 L

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Answers

As far as i can understand the question, it is given that Karen proofreads 15 pages. She gets a rate of $40 for proofreading 2 pages. The money Karen makes for proofreading 15 pages has to be determined.
Number of pages Karen proofreads = 15
Then
For proofreading 2 pages Karen receives = 40 dollars
So
For proofreading 15 pages, Karen receives = (40/2) * 15 dollars
                                                                       = 20 * 15 dollars
                                                                       = 300 dollars
So Karen receives $300 for proofreading 15 pages. I hope this is what you were looking for and the procedure for solving the problem is also clear to you.

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Answers

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Answers

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Answers

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Answers

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I will just tell you what I did.
WORK:
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