If the discriminant(b^2-4ac) is rational, then the quadratic is rational.
~ThePirc
The answer is 2 because two plus two equals 4 and 4-2=2 so the answer is 2. Hope this could help a lot and this was a useful answer
Answer:
7am
Step-by-step explanation:
Answer: 3 customers per minute
Step-by-step explanation: 12/4 is 12 customers and 4 is the minutes. We want to know the rate at 1 minute so you divided 12 by 4 and 4 by 4, which gives you 3/1 or 3 customers per minute.
Using ur calculator you should get 15 degrees ( Use the sin-1 key.).
Angle complementary to x is 90-15 = 75 degrees
and as sin x = cos(90-x) then cos 75 is also equal 0.2588
