Answer: 21 dollars was his bill before the tip
Step-by-step explanation: 4.20 is 20% of what he paid with no tip included. This means you can set up an equation like this.
4.20 = .2x This means that $4.20 is (is means =) 20% of (of means multiply) x (which is the unknown factor).
Step-by-step explanation:
ay guey como estas yo no entiendo este tipo de matematica para nerds
Answer with step-by-step explanation:
Yes, it is possible to have more that one (x,y) pair because of the distributive property.
6x + 4y = 34. If this is the case, we have to find 2 numbers that sum up to 34.
5x - 27 = 15. If we are going to calculate this equation, you need to reverse the equation. 15 + 27 = 42 = 5x. If 42 = 5x, we have to divide 42 by 5, which is 8.4
Hope this helped! (brainliest please)