All the opposite angles are equal in a parallelogram:
so AB=DB shows it is an isosceles triangle:
so the two angles on the sides are congruent,
let x to be one of the angles:
2x+28=180
2x=152
x=76=∠A
∠A is opposite of ∠DCB so ∠DCB is 76° because of the parallelogram properties
Let the output = Y and the input = X.
The output (y) is 7 more than 3 times the input (x), which can be written as an equation:
Y = 3X+7
The out put is -8, so replace Y in the equation and solve for X:
-8 = 3X+7
Subtract 7 from each side:
-15 = 3X
Divide both sides by 3:
X = -15 / 3
X = -5
The input is -5
Answer:
h(3) = 1/9
Step-by-step explanation:
h(n) = 9* (1/9)^(n-1)
so h(3) = 9 * (1/9)^2 = 1/9