Question

Use the method of subsititution to solve the system of linear equations.

-r + 10t = 22
-10r + 5t = 30

Answer 1

r=-2 t=2

Answer 2

from the first equation you get r = 10t-22
substitute this expression instead of r in the second equation giving you
-10(10t-22)+5t =30
solve for t. once you have t, r is 10t-22

Answer 3

solve for r and plug in second equation and then you will find t once you find t then plug in t's answer to original equation so you can find r

Answer 4

1. The table gives the population of a town for the years 2000u20132009.
2000=1605
2001=1728
2002=1776
2003=1903
2004=2072
2005=2050
2006=2141
2007=2150
20

Answer 5

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Answer 6

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Answer 7

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Answer 8

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Answer 9

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Answer 10

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Answer 11

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____ processes transform the surface of the Earth.

Subl

Answer 12

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Answer 13

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Answer 14

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Answer 15

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Answer 18

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Answer 21

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Answer 22

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Answer 23

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