Answer:
Y=1
Step-by-step explanation:
Plug in 3 for x
y=2(3)²-4(3)-5
y=18-12-5
y=1
f(x)=2x^2+0x-5
Find the vertex
0/4=0=x
Input x into the equation to find y or f(x)
0+0-5=f(x)
(0,-5) = Vertex
Now find a random x coordinate to input into the equation.
Let's do 4.
32+0-5=f(x)=27
It may not look like a parabola due to it being uneven.
Oh. I thought you meant 3-6, not questions 3 through 6. Sorry :(
Answer:
4/45.
Step-by-step explanation:
There are a total of 15 marbles in the bowl, so:
P(red) = 5/15 = 1/3
P(blue) = 4/15
Required probability = 1/3 * 4/15
= 4/45