What is the period for the graph of y=cos(0)? (sketch a graph to determine the answer.) a.180 b.90 c.360 d.270

We have the following equation:
 y = cos (0)
 The first thing you should know is that the period of a function is that value for which the function repeats itself.
 We have then:
 y = cos (0) = 1
 y = cos (360) = 1
 Therefore, the period is 360.
 
 the period for the graph of y = cos (0) is:
 c.360

The probability of choosing of the blue tile and flip a coin are

1. P(BT) = 1/7 = 4

2. P(H or T) = 1/2 = 1.5

Step-by-step explanation:

1. P(BT) = 1/7

P(BT) = 1/7 + 2/7+ 3/7 + 4/7 + 5/7 + 6/7 + 7/7 = 1 + 2 + 3 + 4 + 5 + 6 + 7  = 28/7

P(BT) = 4

2. P(H or T) = 1/2 + 2/2 = 1 + 2/2  = 3/2 = 1.5