We have to find the period of the parent cosine function and the period of the function showed on the graph.
Period = 2π / B, where B is the coefficient of x - term.
1. For the function: y = cos x, B = 1
Period = 2 π / 1 = 2 π = 360°.
2. For the graphed function ( from the picture ):
Period = 6 π = 1,080°
The answer is 4c-10
10 + 25 (35) is less than 40 - 10 (30)
For these you just plug in the value given for the variable (in this case, c) to each choice until you find the one is true
Answer:
the ball reaches a height of 64 feet after 2 sec.
The ball is in the air 4 sec.
Step-by-step explanation:
The ball is following the path of a parabola. The maximum height is at the vertex of the parabola.
Let (h, k) be the vertex. h will be the time it takes to reach the maximum height, and k will be that height.
y = ![-16t^{2} + 64t](https://tex.z-dn.net/?f=-16t%5E%7B2%7D%20%2B%2064t)
h = -b/2a = 64/(-2)(-16) = 64/32 = 2
k = -16(2)^2 + 64(2)
-16(4) + 128
- 64 + 128 = 64
V: (2, 64)
So the ball reaches a height of 64 feet after 2 sec.
Let
= 0 (0 is the height when the balls hits the ground)
-16t(t - 4) = 0
t = 0 or t = 4
The ball is in the air 4 sec.
904.78cm there is only one variable which is the radius since the radius is 6 cm just plug it into the formula and it will give u 904.78cm
Answer:
the store offered the better deal
Step-by-step explanation:
the store was only 20 dollars and online e was 42 so the store had the better deal