D. Because they give you 2 sides. You should know the vertical angle theorems are equivalent. So similar Bc of the SAS. Also the sides are proportional by the factor of 10.
How to find "a"???
Pick a point on the graph other than the vertex. Let's say you see the line pass through (1,5) and the vertex is at (3,4)...
First the vertex gives you this...
y = a (x - 3)2 + 4
Put the values (1,5) into this equation.
5 = a (1 - 3)2 + 4
Solve for a
5 = a*(-2)2 + 4
5 = 4a + 4
1 = 4a
1/4 = a
Final equation is
y = 1/4*(x - 3)2 + 4
Answer:
Step-by-step explanation:
Recall that the angle formed by two tangents is half the difference of the intercepted arc.
Multiply through by 2 to get:
26x+20=49x+10-180+13x+10
Group similar terms to get:
26x-13x-49x=10-180+10-20
-36x=-180
x=5
Answer:
correspond with the domain.
Domain:
(
−
∞
,
∞
)
,
{
x
|
x
∈
R
}
Range:
(
−
∞
,
∞
)
,
{
y
|
y
∈
R
}
Step-by-step explanation: