Answer:
y = -0.1x^2
Step-by-step explanation:
Start out with vertex form
y = a(x - h)^2 + k
The vertex at the origin
Therefor (h, k) = (0, 0)
y = ax^2
use point (20, -40) to find a
-40 = a(20^2)
-40 = a(400)
Divide both sides by
400
-0.1 = a
Therefor
y = -0.1x^2
This is standard form with a = -.01 and both b and c equal to zero
Answer:
2 and 3/10 pints
Step-by-step explanation:
4 and 3/5= 4.6
Divide by two
2.3= 2 and 3/10
Answer:
See below.
Step-by-step explanation:
a. 5 points have names. There is an infinite number of points in the plane, but most of them are nameless!
b. two
c. one
d. line <em>a</em>. Also known as
e. <em>W</em>
f. are all good names
g. V, W, Z is just one of several sets of 3 non-collinear points.
h. plane XWZ (name it using 3 <u>non-collinear</u> points
Find the lengths AB, BC and AC.
length AB= √(4²+(-4)²) = √32
length BC = √(4²+7²) = √65
length AC = √(8²+3²) = √73
From the lengths of this triangle it can be seen that no side is equal to the other and also it is not a right triangle.
So, triangle ABC is a scalene.