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Elenna [48]
3 years ago
7

Help me pls.

Mathematics
1 answer:
salantis [7]3 years ago
3 0

Answer:

1. 424

2.471

3.512

Step-by-step explanation:

1. 10×12+8×10+8×13+8×15

=120+80+104+120

=424

2. 5×24+9×24+9×15+9×15

=120+216+135

=471

3. 24×16+2×24+2×20+2×20

=384+48+40+40

=512

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Step-by-step explanation:

* Lets explain how to solve the problem

- The slope of a line that passes through points (x1 , y1) and (x2 , y2) is

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∵ The points (4 , 1) and (x , -6) lie on the same line

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∴ x - 4 = -7 ⇒ add 4 to both sides

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