Answer: A
Step-by-step explanation: 0.25−2.50=-2.25
That is a 30 60 90 triangle
The "short" side (DE) equals the middle side (FE) times (1 / sq rt(3))
short side = 8 * sqrt(3) * (1 / sq rt(3) = 8
Hypotenuse (DF) is 2 times the short side which equals 16.
Source:
http://www.1728.org/trig2.htm
Answer:
-5
Step-by-step explanation:
2x=-10
x=-5
Charlie bought 4 tickets
3 + 1.50 +1.50+1.50+1.50 =9