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mart [117]
3 years ago
9

Beth has 250 comic books in her collection. She begins to sell 20 of them each week. Martin has 80 comic books in his collection

. He begins buying 15 new comic books each week.
Mathematics
1 answer:
Nuetrik [128]3 years ago
6 0
Well, after doing all that math, here is what I came up with, I hope this helps! :) -1600x^2+28265x-21830
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Identify any solutions to the system given below.
fiasKO [112]
Answer:
• (6, -7)
• (-4, 13)

Explanation:

• Option One

2x + y = 5
2(6) + (-7) = 5
12 - 7 = 5
5 = 5 {true}

3y = 15 - 6x
3(-7) = 15 - 6(6)
-21 = 15 - 36
-21 = -21 {true}

• Option Two

2x + y = 5
2(2) + 1 = 5
4 + 1 = 5
5 = 5 {true}

3y = 15 - 6x
3(1) = 15 - 6(2)
3 = 15 - 12
3 = 13 {not true}

• Option Three

2x + y = 5
2(-2) + (-9) = 5
-4 - 9 = 5
-13 = 5 {not true}

3y = 15 - 6x
3(-9) = 15 - 6(-2)
-27 = 15 + 12
-27 = 27 {not true}

• Option Four

2x + y = 5
2(-4) + 13 = 5
-8 + 13 = 5
5 = 5 {true}

3y = 15 - 6x
3(13) = 15 - 6(-4)
39 = 15 + 24
39 = 39 {true}
3 0
3 years ago
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The cost to make a path connecting all four landmarks is based on the proposal shown. The cost of path A is $29. The cost of pat
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Answer:

158

Step-by-step explanation:

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Find the area. The formula is A=1/2bh
Lemur [1.5K]

Answer:

18

Step-by-step explanation:

1/2bh

9 x 4 = 36

36/2 = 18

area = 18

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3 years ago
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Whitepunk [10]

Answer: 21

Step-by-step explanation:

84 divided by 4 = 21 since grabielle is 21, and then mikhail is gonna be 3 times more so it’s gonna be 63

7 0
3 years ago
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AnnZ [28]

Answer:C= 9

Step-by-step explanation:

c−7=1×2

c−7=2

c=2+7

c=9

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2 years ago
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