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liubo4ka [24]
2 years ago
10

Find the value of x and explain please ANSWER ASAP!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Korvikt [17]2 years ago
8 0

Answer:

y = - 4

Step-by-step explanation:

Given

y = 2 - 9x ← substitute x = \frac{2}{3}

y = 2 - ( 9 × \frac{2}{3} ) ← cancel the 9 and 3 by 3

  = 2 - (3 × 2 )

  = 2 - 6

  = - 4

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A 13?-foot board is cut into two pieces. The longer piece is 7.5 feet longer than the shorter piece. What is the length of each?
chubhunter [2.5K]

Answer:

The smaller board would be 2.75 feet and the longer one would be 10.25 feet.

Step-by-step explanation:

In order to find this, assume the shorter board is equal to x. Next, we would know that the longer board would be equal to x + 7.5. Using these two assumptions, we can add the lengths together, set equal to 13 and then solve for x.

x + (x + 7.5) = 13

2x + 7.5 = 13

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x = 2.75

Now that we have the length of the shorter board, we can add 7.5 to it to get the larger one.

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3 years ago
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The second one says 10 square meters, so just multiply 10.75, by 10.

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I'm sure you can figure out the last one.

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3 years ago
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