Ok so first you would create a proportion.
8/x=4/1. Next you cross multiply and divide,
1 • 8÷4=x. Ratios are fractions with the first number being the numerator and the second being the denominator. If you think of it this way, you just find an equivalent fraction. Your answer would be 8:2 because in your proportion x=2.
How are we supposed to help with this what the heck??
Answer:
The directrix is y=6 and focus is (0,4)
The equation of the parabola is,
20-4y=x²
Express it in Scientific notation
48,800,000.
The answer:
4.88 x 10⁷
Answer:
Option B 3,-3,-6 is correct.
Step-by-step explanation:
We need to find real zeroes of 
Solving
Taking x^2 common from first 2 terms and -9 from last two terms we get
Taking (x+6) common
x^2-9 can be solved using formula a^2-b^2 = (a+b)(a-b)
Putting it equal to zero,
So, Option B 3,-3,-6 is correct.
