I assume that the parabola in this particular problem is one whose axis of symmetry is parallel to the y axis. The formula we're going to use in this case is (x-h)2=4p(y-k). We know variables h and k from the vertex (1,20) but p is not given. However, we can solve for p by substituting values x and y in the formula with the y-intercept:
(0-1)^2=4p(16-20)
Solving for p, p=-1/16.
Going back to the formula, we can finally solve for the x-intercepts. Simply fill in variables p, h and k then set y to zero:
(x-1)^2=4(-1/16)(0-20)
(x-1)^2=5
x-1=(+-)sqrt(5)
x=(+-)sqrt(5)+1
Here, we have two values of x
x=sqrt(5)+1 and
x=-sqrt(5)+1
thus, the answers are: (sqrt(5)+1,0) and (-sqrt(5)+1,0).
Answer:120 degrees
Step-by-step explanation:
24 out 72 orders:.
We have total of 360° in a pichart,
So degrees that will be needed to represent 24 out of 72 on pie chart is :
Pizza= (24 / 72 ) * 360°
Pizza=8640 / 72
Pizza= 120°
We have an equation: 432/?= 3/5
Cross multiply:
3*?= 432*5
⇒ ?= 432*5/3= 720
720 students use regular pencils~
20x2 = 40 tip
240-40 = 200 rent for 2 busses
240/2 = 100 $ they can spend on each bus rental.
Answer:
4
Step-by-step explanation:
-14+30
16/4
