Answer:
y² = -12x.
Step-by-step explanation:
Given : Parabola with vertex (0,0) and focus (-3,0).
To find : Which is the equation of Parabola.
Solution : We have given that vertex (0,0) and focus (-3,0).
Standard form of parabolic equation (y - k)² = 4p (x - h).
where the focus is (h + p, k) and vertex (h,k)
We can see h= 0 , k = 0,
h+p = -3
0 + p = -3
p = -3.
On plugging the values of h , k ,p
Then equation of parabola (y - 0)² = 4(-3) (x - 0).
y² = -12x.
Therefore, y² = -12x.
Answer:
a= infinite
b= one sol
c= no solutions
d= infinite
Step-by-step explanation:
I how this helped. Basically solve for X and see if you can. If you can't it is zero solutions, if you can solve it one way then it is one solution, and if will will always solve then it is infinite solutions.
They are similar because 4/2 = 8/4
First, we can raise each number to the second power by multipying it by itself. :)
1^2=1
4^2=16
9^2=81
16^2=256
These numbers are called "perfect squares" because their square roots are whole numbers, rather than decimals. For example, If you had a square with an area of 16, the side legnths of the square would be the whole (thus "perfect") number 4. For this reason, 16 (4^2) is considered a "perfect square" number. I hope that makes sense!! :)
Answer:
39.25 cubic feet of paint will be needed by Ellis.
Step-by-step explanation:
Step-by-step explanation:
Volume of a cylinder:
The volume of a cylinder of radius r and height h is given by:
V = \pi r^2h = 3.14r^2h
How much paint will Ellis need to paint all the surfaces of the 10 fenceposts?
This is the combined volume of these 10 fenceposts.
They are each 5 feet tall and have a diameter of 1 foot.
Radius is half the diameter, so r = \frac{1}{2} = 0.5. Also h = 5
10 fenceposts:
Each has the same volume, so:
V = 10(3.14)r^2h = 31.4(0.5)^2(5) = 39.25
39.25 cubic feet of paint will be needed by Ellis.
hope this helps
