Answer: h = 2
k = -5
y = a(x - h)2 + k
y = a(x - 2)2 - 5
Use the given point to find a.
-8 = a(5 - 2)2 - 5
-8 = 9a - 5
a = -1/3
y = (-1/3)(x - 2)2 - 5
Step-by-step explanation:
Answer: 1
13pi/2 can be simplified onto 6 pi/2, so it goes around the unit circle 6 times and left with pi/2. the coordinates of pi/2 is (0,1). the trigonometric function sin is y/r. since r is always 1 on the unit circle, the answer is the y value, in this case it is 1.
Answer:
104
Step-by-step explanation:
2x^2+8x−5=0
This is written in the form
ax^2 + bx+c
a =2 b = 8 c=-5
The discriminant is
b^2 -4ac
8^2 - 4(2)(-5)
64 + 40
104
The discriminant is 104
Answer:
B I think
Step-by-step explanation:
Answer:
The answers are 20 years for myself and 10 years for your friend
Step-by-step explanation:
I need help on how to write the whole format out but those are definitely the right answers.