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Svetradugi [14.3K]
2 years ago
6

Need help with number 43 and 45 and need to show the work

Mathematics
1 answer:
Alex787 [66]2 years ago
5 0
43:
       Negative temperatures are basically the same as normal ones, although they go below zero, so they are still the same distance apart from zero, just on the left side of the number line.

      To find the answer find the difference between 30.5°C and 0 (which is 30.5).

      Next, find the difference between -122.2°C and zero (122.2)

       Finally, add 122.2 + 30.5 to find the total distances from the zero combined for the full distances apart from each other.

     (We add them because -122.2 to the left of zero, and 30.5 is on the right)

      You should get 152.7 as your answer.

45:
     I'm guessing since it is asking for the deepest point (-5315) from sea level (0), the answer is -5,315 feet

     *Remember 5,315 is negative because numbers below sea level are all negative*

     So the answer should be -5,315 feet deep. (I'm not sure how to show your work for that I'm guessing it is 0 - 5,315 at the slightest).

 *Hope this all helped :)*

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koban [17]

Answer:

how to solve 2x+2y=2 , -4x+4y=12

this is  solving equations using substitution .... i have ALOT more but i juss dnt get this stuff

2x + 2y = 2      -4x + 4y = 12

x + y = 1

x = 1 - y

-4x + 4y = 12

-4(1 - y) + 4y = 12

(-4 + 4y) + 4y = 12

-4 + 8y = 12

8y = 16

y = 2

2x + 2y = 2

2x + 2(2) = 2

2x + 4 = 2

2x = -2

x = -1

Check.

-4x + 4y = 12

-4(-1) + 4(2) = 12

4 + 8 = 12

Answer: x = -1 and y = 2

Step-by-step explanation:

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At this rate, how many hours will it take Darin to mow 12 lawns?
Lerok [7]

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3 years ago
Terry Barlett worked from 7:00 am to 10:45 am and from 12:30 pm to 3:15 pm at a chocolate shop. Find the total hours
irakobra [83]

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6 hours 30 minutes

Step-by-step explanation:

morning work=3 hours 45 minutes

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total hours=?

Here,

3 hours 45 minutes+2 hours 45 minutes

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Therefore,Terry Baelett worked 6hours 30 minutes a day.

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Which is a better deal on a $345 item: 40% off original price or 30% off and additional 15% at the register?​
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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What is the x-intercept of y=40x+70
AysviL [449]
At th x-intercept y=o

∴40x + 70 = 0
  40x = -70
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2 years ago
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