14 degrees. It equals half the intercepted arc.
(See attached graphic)
Answer:

Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or 
Let
c ----> the total cost of the boat rental
d ---> is the number of days, the family rents the boat
we know that
Kaya's family spends $105 to rent a boat for 7 days
so
For d=7 days, c=$105
Find the value of the constant of proportionality k

substitute the given values

therefore
The linear direct equation is equal to

Answer:
Step-by-step explanation:
Both equations have -7y. You can eliminate them by subtracting one equation from the other:
Multiply equation 1 by -1, then add it to equation 2:
-2x + 7y = 74
3x - 7y = -83
———————
x = -9
2x - 7y = -74
2(-9) - 7y = -74
-7y = -56
Y = 8
(x,y) = (-9, 8)
Answer:
Step-by-step explanation:
-(-2 + 3x - 1/2) = -( -2 - 0.5 + 3x)
= -(-2.5 + 3x)
= -1*(-2.5) + (-1)*3x
= 2.5 - 3x
2.5 - 3x is not equivalent to 2.5 + 3x