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answer ALL attachments :){ga – 3 d = 3

Solve each system by elimination.
4x – 6y = – 26
9a – 3d = 3
30.
31.
13
2x – 3y = 6
20x + 5y = 120
33.
34.
16x – 9y = 9
10x + 7.5y = 80
2x – 3y = -1
J5x – 2y = -19
36.
37.
13x + 4y = 8
12x + 3y = 0
Sy = 4
3x + 2y = 10
39.
40.
3x + y = 6
(6x + 4y = 15
{
2a + 3b = 12
32.
5a – b = 13
ſ 6x – 2y = 11
35.
-9x + 3y = 16
r + 3s = 7
38.
2r s = 7
3m + 4n = -13
41.
15m + 6n = -19
– x
42. Elections In a mayoral election, the number of votes for the incumbent was
25% more than the number for the opponent. Altogether, the two candidates
43. Writing Explain how you decide whether to use substitution or elimination to
solve a system.
Solve each system.
5x + y = 0
ſ2m = -4n – 4
7x + 2y = -8
44.
45.
46.
15x + 2y = 30
3m + 5n = -3
8y = 4x
ſv = 91 + 300
80x + 60y = 85 \$2x + 3y = 0
47.
48.
49.
71 + 400
100x – 40y = 20
17x 3(2y) + 3
4y
+ 3 = 300
0.02a 1.55 4 | 4y = 2x
50.
51.
52.
= 300
0.5b – 0.02a
= 1.8
2x + y = { + 1
13x – 4y
For each system, choose the method of solving that seems easier to use.
Explain why you made each choice.
3x – 5y = 26 { y = 3x – 3
2m + 3n = 12
54.
55.
56.
-x + 3y = 18
5m + n = -13
(3x – y = 5
3y = 4
S6x – 3y – 3
57.
58.
59.
Ly = 4x + 2
2x – 5y = -6
15x – 5y = 10
{–

S2x
ge
62. Break-Even Point A theater production costs \$40,000 plus \$2800 per
performance. A sold-out performance brings in \$3675. How many sold-out
performances will the production need to break even?
63. Weather The equation F = ?C + 32 relates temperatures on the Celsius and
Fahrenheit scales. Does any temperature have the same number reading on
both scales? If so, what is the number?
Find the value of a that makes each system a dependent system.
Sy = 3x + a
64.
Зу = 2х
65.
{y = £ + 4
13x – y = 2
66.
16y – a – 4x = 0 12y
x=a
rep
ase
Use the following system of equations for Exercises 67-70.
5x – 3y = 11
|-x + 12y = 3.5
67. If you want to solve the system by eliminating < (with addition), by what would you multiply the second equation? 68. If you want to solve the system by eliminating y (with addition), by what would you multiply the first equation? 69. What is the value of x in the solution? Enter your answer as a decimal. 70. What is the value of y in the solution? Enter your answer as a decimal. Purchase answer to see full attachment

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