Answer:
The vertex of the parabola is (-2,0)
Step-by-step explanation:
The given function is:
Now, in order to find the vertex for the parabola, that is v(h,k), comparing the above equation with the standard form of equation that is , we get
a=-3, b=-6 and c=0
We know, and , therefore
and
Thus, the vertex is given as:(h,k)=(-2,0).
They give us a few of the rare angles we can get exact answers for and then they ask for an approximation. Amateurs.
In the 30/60/90 triangle the sides are in ratio 1:√3:2. So for the big side 22 the altitude h=11 and the part of the base to the right of the right angle is 11√3.
In the 45/45/90 triangle the sides are in ratio 1:1:√2 so the altitude h=x/√2 and the base to the left of the right angle is also h. So
x = h√2 = 11√2
y = 11√3 + 11
I hate ruining a nice exact answer with an approximation but they asked:
Answer: x=15.56 y=30.05
The heron formula is given by:
A = root ((s) * (s-a) * (s-b) * (s-c))
Where,
s = (a + b + c) / 2
We must calculate the third side of the triangle:
a + b + c = 50
Substituting:
22 + 13 + c = 50
Clearing c we have:
c = 50-22-13
c = 15
Substituting the values in the formula we have:
s = (22 + 13 + 15) / 2
s = 25
Then, the area will be:
A = root ((25) * (25-22) * (25-13) * (25-15))
A = 94.86832981
Rounding off we have:
A = 95 in ^ 2
Answer:
the area of triangle RST is:
A = 95 in ^ 2
A,C, and E are all correct answers
Answer:
dk dc
Step-by-step explanation: