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luda_lava [24]
3 years ago
15

1 poir

Mathematics
2 answers:
podryga [215]3 years ago
4 0

The given options are:

  • (A)x+y = 20
  • (B)7 apps and 14 movies
  • (C)x-y= 20
  • (D)y=-x+ 20
  • (E)8 apps and 12 movies
  • (F)xy= 20

Answer:

  • (A)x+y = 20
  • (D)y=-x+ 20
  • (E)8 apps and 12 movies

Step-by-step explanation:

If Elizabeth has a combined total of 20 apps and movies.

Where:

Number of apps=x

Number of Movies =y

Then:

Their total,

  • x+y=20 (Option A)

If we subtract x from both sides

x+y-x=-x+20

  • y=-x+20 (Option D)

In Option E

8 apps and 12 movies  add up to 20. Therefore, this could also apply.

USPshnik [31]3 years ago
3 0

Answer:

y= -x+20  and 8 apps and 12 movies

Step-by-step explanation:

Just took the test and these two were the only two that were right.  I don't know why x+y=20 was not correct but it wasn't.   Good luck!

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