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Ugo [173]
2 years ago
10

I need help with #11 and #12 how do I do this?

Mathematics
2 answers:
USPshnik [31]2 years ago
8 0

Answer:

  11. x = 6; y = 6.5

  12. x = 2; y = 4

Step-by-step explanation:

In each figure, the hash marks on the lines indicate the parallel lines (marked with red arrows) are equally-spaced. That means the two expressions involving x are equal to each other, and the two expressions involving y are equal to each other.

__

11. 2x +1 = x +7

  x = 6 . . . . . . . subtract (x+1) from both sides

and

  3y -8 = y +5

  2y = 13 . . . . add (8-y) to both sides

  y = 6.5 . . . . divide by the coefficient of y

__

12. x +3 = 3/2x +2

  1 = 1/2x . . . . . subtract (x+2)

  2 = x . . . . . . . multiply by 2

and

  2y -1 = 3y -5

  4 = y . . . . . . add (5 -2y)

katovenus [111]2 years ago
4 0

Answer:

11. x=6;y=6.5  12. x=2;y=4

Step-by-step explanation:

hope that helped

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How would you solve 3/4 over 1/2 as a ratio
miskamm [114]

Answer:

  3/2

Step-by-step explanation:

A couple of different methods are used for dividing fractions.

1. "Invert and multiply". Dividing by a number is the same as multiplying by its reciprocal:

  (3/4) / (1/2) = (3/4) × (2/1)

  = (3·2)/(4·1) = 6/4 = 3/2

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2. Make the denominators the same and use the ratio of numerators.

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_____

For these fractions, you can recognize that 3/4 is 1/4 more than 1/2, and that 1/4 is half of 1/2. That means 3/4 is half-again as much as 1/2, so is 1 1/2 = 3/2 times 1/2. This tells you the ratio (3/4) : (1/2) = 3/2.

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Along the lines of the above, you can write the ratio as ...

  (3/4) : (1/2)

and multiply by 4 to get

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6 0
2 years ago
I am so lost o how to do this
pochemuha
I would simply consider saying that the answer is:
B. .533

because 8, 9-10th graders watched and 7 didn’t
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