Answer: The parabola has its concavity downwards, so we need a function in the model:
With a negative value of 'a'
The vertex is (0,0), so we have that:
The x-coordinate of the vertex is given by the equation:
So we have a function in the model:
With a < 0
The only option with this format is B:
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Tangent of [5 pi]/4
The expression above is given in radian; when ever you have something like this- take note, it's in radian.
Pi [in radian] = 180 in degrees
Hence [5 pi]/4 = [5 x 180]/ 4 =5 x 45 = 225
So Tan 225 = Tan [225-180] =Tan 45
and Tan 45 =1
A) 1,3,5,7,9,11,13,15
There r 8 odd number rooms
5x = 2x+12 because in similar triangles, the angles are ALWAYS equal
3x=12
x=4
2(4)+12=A
A=20 degrees
Answer: 14.7338936% decrease
cross-multiply
85.2661064 = x
100 - 85.2661064 = 14.7338936
Check: 0.852661064 * 5355 = 4566
If permitted, you may round for a simpler (yet less precise and exact) answer. For instance, rounding to the hundredths would make it ~14.73%.
