X^2-4x-17 is the same as 1x^2 + (-4)x + (-17)
It is in the form y = ax^2 + bx + c where
a = 1
b = -4
c = -17
To find the value of h, we use this formula
h = -b/(2a)
h = -(-4)/(2*(1))
h = 4/2
h = 2
Plug this back into the original function to find k
k = x^2-4x-17
k = (2)^2-4(2)-17
k = 4-8-17
k = -4-17
k = -21
So we know that a = 1, h = 2 and k = -21 making
y = a(x-h)^2 + k
turn into
y = 1(x-2)^2 - 21
which is now in vertex form. The vertex is (h,k) = (2,-21)
Answer:
-8.8
Step-by-step explanation:
We begin by simplifying the parenthesis through multiplication. Parenthesis is a structure which signals multiplication happening.
We now begin combining like terms across the equal sign by performing the inverse or doing the opposite. Move first the 8.11 by subtracting it from both sides.
Now, move 4.3v across by subtracting it from both sides.
Finally, we divide both sides by the coefficient of v.
Lees class has 1.4 times more..
25 x 1.4= 35....which is Lee's total
Fred's would be the 25.
25 + 35 = 60
I just picked #s to start
example: 23x 1.4=32.2. 23+32.2=55.2...not 60
Answer:
28.134 + 17.922 + 34.023 = 80.079
83.736 - 80.079 = 3.657
Lings relay team beat the champions by 3.657 seconds
I hope this helps please mark me Brainliest if it did! Thank you and have a nice day!
