Answer:
Step-by-step explanation:
5y = -2x + 3
y = -2/5x + 3/5
Answer:
x = 36
Step-by-step explanation:
The angles 3x - y and 2x + y form a straight angle and are supplementary, so
3x - y + 2x + y = 180
5x = 180 ( divide both sides by 5 )
x = 36
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5y and 3x - y are vertical angles and congruent, hence
5y = 3x - y ( add y to both sides )
6y = 3x ← substitute x = 36
6y = 3 × 36 = 108 ( divide both sides by 6 )
y = 18
Answer: 7.25%
Step-by-step explanation:
There are a few ways to do this, but the easiest might be to set up a proportion:
321.75/300 = x percent/100 percent
Now cross multiply;
300x = 321.75(100) = 32,175
Divide both sides by 300 to solve for x:
300x/300 = 32,175/300
x = 107.25 This means that the tip was 7.25% on top of the $300 meal.
Answer:
<em>b. 5 + 17i</em>
Step-by-step explanation: