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Elena L [17]
3 years ago
14

Zoe Paid $18.60 in sales tax and tips for her dinner the sales tax rate is 11% and she tipped 20%

Mathematics
1 answer:
barxatty [35]3 years ago
4 0

Answer:

The cost of the dinner before other costs is $14.20

Step-by-step explanation:

To solve this, we write the following equation:

x + .11x + .20x = 18.60

This is because in addition to paying for the dinner (x), she also has to pay 11% of it and another 20% of it. Now we can combine like terms and solve.

1.31x = 18.60

x = 14.20

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<h2>         y = -¹/₄x - 1</h2>

Step-by-step explanation:

If two lines are perpendicular then the product of theirs slopes is equal -1:

y=m₁x+b₁   ⊥   y=m₂x+b₂   ⇒    m₁×m₂ = -1

y = 4x - 2   ⇒   m₁=4

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b = -1

Therefore equation in  slope-intercept form:

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