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Aleonysh [2.5K]
3 years ago
5

Points a and b both lie on the line y=3x+7. Work out the missing y coordinate for a and the missing x coordinate for B?

Mathematics
1 answer:
Ghella [55]3 years ago
8 0

Answer:

y coordinate = 13

x coordinate = -1

Step-by-step explanation:

Trail and error lol

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3 years ago
At a concession stand, a pickle and two bags of chips costs a total of $3.25. Three pickles and four bags of chips costs a total
kolbaska11 [484]

Answer:

A bag of chips costs $1

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Step-by-step explanation:

P + 2c = 3.25                            Start with these two equations

3p + 4c = 7.25

p = -2c + 3.25                           Solve for one variable

3(-2c +3.25) + 4c = 7.25           Substitute

-6c + 9.75 + 4c = 7.25

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c = 1

p + 2(1) = 3.25                           Substitute

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4 0
3 years ago
If 2x − 4(x + 1) = −12, evaluate x2 − 1.
Vlad [161]
2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
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x=-8/-2
x=4

2) we evalute x²-1
x²-1=4²-1=16-1=15

Answer: 15
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3 years ago
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andrey2020 [161]

Answer:

Step-by-step explanation:

5, -4

5-4=1

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6 0
2 years ago
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