Answer: 
Explanation:
The equation of the unit circle is 
Plug in y = -2/7 and solve for x

Z - 9 = 27 |add 9 to both sides
z = 36
The first step u should do is (3+2)
Answer:
Dimensions : 37.5 * 12.5
length : 37.5
width : 12.5
Step-by-step explanation:
let x = length and y = width
x = 3y based on info from problem
Perimeter = 2(length + width)
100 = 2(x + y)
substitute 3y for x
100 = 2(3y + y)
100 = 2(4y)
100 = 8y
y = 12.5
x = 3(12.5) = 37.5
Answer:
8.11 and 9 1/11
Step-by-step explanation: