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Paraphin [41]
3 years ago
12

2. When x is -1.5 , what value of y makes the equation true

Mathematics
1 answer:
alex41 [277]3 years ago
5 0

Answer:

-2

Step-by-step explanation:

y = 3x + 2.5

x = -1.5

y = 3 x -1.5 + 2.5

  = -4.5 + 2.5

  = -2

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The coordinates of the pentagon are given as:

T = (1, 8)

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X =(6, 2)

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The area of the pentagon is then calculated using:

Area = \frac 12|(x_1y_2+x_2y_3+x_3y_4+x_4y_5+x_5y_1) -(y_1x_2+y_2x_3+y_3x_4+y_4x_5+y_5x_1)|

So, we have:

Area = \frac 12|(1 \times 8 +3 \times 2+6\times2+3 \times 4 + 1 \times 8) -(8\times3+8\times6+2\times3+2\times1+4\times1)|

Simplify the expressions in both brackets

Area = \frac 12|46 -84|

Area = \frac 12|-38|

Remove absolute bracket

Area = \frac 12 \times 38

Area = 19

Hence, the area of the pentagon is 19 square units

Read more about areas at:

brainly.com/question/1423568

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