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Artemon [7]
3 years ago
5

Which expression is equivalent to (9x - 3 1/8) - (7x + 1 3/8)?

Mathematics
1 answer:
serg [7]3 years ago
8 0
STEPS TO GET THE CORRECT ANSWER:

First write your question like this:
{ ( [9x] [-31/8] ) - ( [7x] [+13/8] ) }

2: You need to subtract 9x and 7x from (9x-31/8)-(7x+13/8) you get 2x. So now you know that the answer has 2x. Eleminate A) and D).

3: Then need to subtract -31/8 from +13/8. You get -11/2.
Turn -11/2 into a mixed number you will get -5 1/2.

4: Put 2x and -5 1/2 together and you would get 2x-5 1/2

But answer C.) is closest to 2x-5 1/2 so the answer is

ANSWER: C.) 2x-4 1/2

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Answer:

c = 15 meters

Step-by-step explanation:

This is solveable using the Pythagorean Theorem,

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Andrej [43]

40 units2˛

   Looking at the figure, the rectangle has the vertexes (2,1), (3,-3), (-5,-5) and (-6,-1). The parallelogram has the vertexes (2,7), (3,3), (3,-3), and (2,1).

The area of a parallelogram is base times height. We have 2 vertical lines at x=2 and x=3, so the height is 1. And the length of the line from (3,3) to (3,-3) is 6, so the base is 6. Therefore the area of the parallelogram is 1*6 = 6.

  The rectangle is a tad trickier since it's not aligned with either the x or y axis. But we can use the Pythagorean theorem to get the lengths.

 L = sqrt((2 - -6)^2 + (1 - -1)^2)

 L = sqrt(8^2 + 2^2)

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  W = sqrt((2-3)^2 + (1- -3)^2)

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Answer:

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