Standard form: y = ax² + bx + c
vertex ( -b/2a , y)
this equation;
a = 2
b = 16
c = 31
so the x-coordinate of the vertex is ...
= -16/2(2)
= -16/4
= -4
Use the x-coordiante to find the vertex y-ccordinate
y = 2(-4)² + 16(-4) + 31
y = 32 - 64 + 31
y = -1
Vertex is (-4, -1)
do a rough sketch of the graph using the location of the vertex. "a" is positive so the parabola is right-side up.
Type the equation into https://www.desmos.com/calculator
if you have trouble still
Answer:
When I solved it I got (A)
Step-by-step explanation:
Answer:
1017.8
Step-by-step explanation:
this is the formula 4πr2
hope this helps: )
First, we can start by expanding (a+b)²
a²+2ab+b²
We can then use the commutative property to separate this into:
a²+b² + 2ab
Since we are given the values for <span>a²+b² and ab, we can</span> plug in these values into the equation:
16 + (2)(8)
16+16
32
Therefore, the value of (a+b)² is 32
Answer:
64
Step-by-step explanation:
the different sum of money is 64