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Nana76 [90]
3 years ago
14

Point A (-2-10) is reflected over the x axis write the coordinates of A

Mathematics
1 answer:
Arada [10]3 years ago
7 0
The answer is (-2, 10) because when reflecting over the x, change the sign of y. When reflecting over the y, change the sign of x.
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Two mechanics, Martin and Gordon, are working on your car. Martin can complete the work in 4 hours, while Gordon can complete th
ki77a [65]

Answer: 4/3 hours or 1 1/3 hours

Step-by-step explanation:

From the question, we are told that two mechanics, Martin and Gordon, are working on your car. Martin can complete the work in 4 hours, while Gordon can complete the work in 2 hours.

Since Martin can complete the work in 4 hours, that means in 1 hour, he will do 1/4 of the work.

Since Gordon can complete the work in 2 hours, that means in 1 hour, he'll do 1/2 of the job.

When they both work together, we will add their fraction of work done in one hour together. This will be:

= 1/4 + 1/2

= 3/4

This means that both of them will do 3/4 of the job in one hour. Then to get the time taken to get the whole job done, we divide 1 by 3/4. This will be:

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= 1 × 4/3

= 4/3 hours

= 1 hour 20 minutes.

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3 years ago
I NEED HELP PLEASE!!!!!
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For the explicit formulae, the final answers are boxed.

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Simplify the expression and show your work. 4y+5=-31
kondor19780726 [428]
4y +5=-31 \\ 
4y+5-5 = 31-5 \\ 
4y=-36 \\ 
4y/4=-36/4 \\ 
y=-9 \\ 
Check: \\ 
4(-9)+5=-31 \\ 
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