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Fantom [35]
2 years ago
12

Im DESPERATE for help. only answer if you are 100 percent sure please!! **WILL GIVE BRAINLIEST**

Mathematics
2 answers:
mina [271]2 years ago
5 0

Answer:D and B

Step-by-step explanation: Hope this helps! HAVE A NICE DAY!

shutvik [7]2 years ago
3 0

Answer:

the answers are d and b

Step-by-step explanation:

d. 19x - 18 = -19x + 18

38x - 18 = 18

38x = 36

x= 36/38= 18/19

b. 19x + 18= -19x + 18

38x + 18 = 18

38x = 0

x =0

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Step-by-step explanation:

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The total amount of money earned by all three plumbers on Monday was $1,400. On Tuesday they earned a total of $1,660, and on We
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Set of equations that can be used to calculate rate for each plumber:
2A+8B+8C = 1,400 --- (1)
4A+7B+10C = 1,660 --- (2)
3A+9B+9C = 1,660 --- (3)
------------------------------------
2*(1) - (2)
------------------------------------
4A+16B+16C = 2,800
4A+7B+10C = 1,660 -
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       9B+6C = 1,140 --- (4)
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3(2) -4(3)
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12A+21B+30C = 4,980
12A+36B+36C = 6,600 -
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9B+6C = 1140
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Using (4), 9(80)+6C = 1140
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Using (1), 2A+8(80)+8(70) = 1400
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The rates are:
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Can someone help please?
Serggg [28]

Answer:

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Step-by-step explanation:

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