Four percent of 56 is 2.24
First, cancel out your X values to get one x on a side. To do this subtract the x that is least in value. X is smaller than 5x, so you have to subtract it.
5x-x= 4x,
Now your new equation is 4x= -12.
Divide both sides by 4.
Answer is X= -3
Answer: k=1
Step-by-step explanation:
4 - 2k = 2
If it's easier you can also write it like
-2k + 4 =2
Solve for k by isolating it. Move four and then divide the -2.
-2k =2-4
-2k= -2
k= -2/-2
k=1
set x=0 to get insights.
at x=0 to the functions are
-2(0-2)²+3 = -5
-2(0+2)²-3 = -11
-2(0-2)²+3 = -5
-2(0-2)²-3 = -11
weird, for some reason option 1 and 3 seem to be the same, maybe that's an accident by the author.
maybe a + was intended inside the parentheses, dunno.
option 1 and 3 seem fine, although I think there is an error in the options. they shouldn't be exactly the same
Vertex is highest point
ok so the t value of the vertex of a function in the form
f(x)=at^2+bt+c is
-b/2a
find t value
h(x)=-16t^2+50t+6
a=-16
b=50
-50/(2*-16)=1.5625
round
1.6 seconds
max height
input 1.6 for t and evaluate (for more precice, input 1.5625 for t)
max height is 45 feet
seems to be
b=initial velocity
c=intial height
a=-16
eqation is
h(t)=-16t^2+70t+5
vertex is -70/(2*-16)=2.1875
input for t to get max height
82 feet
answers are
1.6 seconds
45 feet
82 feet
