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just olya [345]
2 years ago
9

Two friends, Alejandra and Mia, agreed to split the check at a restaurant. Alejandra ordered $12 worth of food and Mia ordered $

18 worth. At the end of the meal, Alejandra put her $12 contribution on the table, plus a 20% tip and Mia put her $18 contribution on the table, plus a 15% tip. The total tip left by Alejandra and Mia is equal to r\% of the total check for their table, where the "total check" amount does not include the tip. What is r?
Mathematics
1 answer:
dedylja [7]2 years ago
6 0
12+18=30 so together they have $30.00 in all.
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KatRina [158]

Answer:

19 degrees more

Step-by-step explanation:

3 0
3 years ago
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Trava [24]

Answer:

(x + 6)(x + 13)

Step-by-step explanation:

Given

x² + 19x + 78

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x² + 19x + 78 = (x + 6)(x + 13) ← in factored form

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2 years ago
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ANEK [815]

Answer:

The correct option is;

∠A ≅ ∠X

Step-by-step explanation:

The given coordinates of the points of triangle ACB are;

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The given coordinates of the points of triangle XYZ are;

X(0, 8), Y(8, 8), Z(6, 2), therefore, we have

The length. l. of segment is given by the following formula;

l = \sqrt{\left (y_{2}-y_{1}  \right )^{2}+\left (x_{2}-x_{1}  \right )^{2}}

For the length of the segment AC; (x₁, y₁) = (-4, 4), (x₂, y₂) = (-1, 3), l = √(10)

For the length of the segment AB; (x₁, y₁) = (-4, 4), (x₂, y₂) = (-4, 0), l = 4

For the length of the segment BC; (x₁, y₁) = (-4, 0), (x₂, y₂) = (-1, 3), l = 3·√2

For the length of the segment XY; (x₁, y₁) = (0, 8), (x₂, y₂) = (8, 8), l = 8

For the length of the segment XZ; (x₁, y₁) = (0, 8), (x₂, y₂) = (6, 2), l = 6·√2

For the length of the segment ZY; (x₁, y₁) = (6, 2), (x₂, y₂) = (8, 8), l = 2·√(10

Therefore;

XY ~ AB, XZ ~ BC, ZY ~ AC

Which gives;

∠A ≅ ∠X, ∠B ≅ ∠Y, ∠C ≅ ∠Z

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really? it's that easy dude. 

whatever number is next to x, like say, 3x, that number would be the slope, so it would be 3.

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