The answer would be y=-4 and x=4, so pick which ever number/letter has this answer.
Answer:
c is the answer
Step-by-step explanation:
You could multiply 19.45 by 0.2 to solve for it, but if you're not using a calculator, then 19.45/5 would be much more convenient and easier.
0.2 is 1/5 in fraction form, which is why we can do that.
19.45/5 = 3.89
Dino should leave $3.89 as a tip.
Use a calculator. The sine of 78 degrees is .98.
