The equation of a parabola is:

If a>0, then the parabola opens up;
If a<0, then the parabola opens down.
The coordinates of focus are:
1/4 is equal to 0.25. so you can multiply 0.25 and 268 to get your answer of 67
Answer:
The first and last statement is wrong, but the three in between is correct. I hope that helps :-)
Step-by-step explanation:
Answer:
h = b(√3)/2
Step-by-step explanation:
The ratio of base to height of an equilateral triangle is ...
... b/h = 2/√3
Multiplying both sides of the equation by (√3)h/2, we get
.. h = b(√3)/2 . . . . . . your equation with h as the subject