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ch4aika [34]
3 years ago
7

A barrel of oil was filled at a constant rate of 7.5 gal/min. the barrel had 10 gallons before filling began. write an equation

in standard form to model the linear situation.
Mathematics
1 answer:
Xelga [282]3 years ago
5 0
Assuming that  :

- The number of the gallons is symbolized by g
- Time per minute is symbolized by t

the equation would be :

g  =  10 + 7.5 t

Hope this helps

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Solve for |2x + 4|-1=7
Rudik [331]

Answer:

x = - 6 or x = 2

Step-by-step explanation:

The absolute value function always returns a positive value. However, the expression inside can be positive or negative.

Given

| 2x + 4 | - 1 = 7 ( add 1 to both sides )

| 2x + 4 | = 8, thus

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2x = 4 ( divide both sides by 2 )

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OR

-(2x + 4) = 8

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- 2x = 12 ( divide both sides by - 2 )

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As a check

Substitute these values into the left side of the equation and if equal to the right side then they are the solutions.

x = 2 → | 4 + 4 | - 1 = | 8 | - 1 = 8 - 1 = 7 ← True

x = - 6 → | - 12 + 4 | - 1 = | - 8 | - 1 = 8 - 1 = 7 ← True

Hence the solutions are x = - 6 or x = 2

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Here is a system of linear equations: y= x+4 y= -3x-8
ipn [44]

Answer:

  • A) (-3,1)

Step-by-step explanation:

<u>Given system of linear equations: </u>

  • y= x+4
  • y= -3x-8

---

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Then

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Solution is (-3, 1)

Correct option is A

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