Answer:
The actual building is 13.3 feet tall.
Step-by-step explanation:
Let the actual height be 'x'.
Given that on a scale drawing with a scale of 1/20, the height of the building is 8 inches, the expression becomes
(1/20) × x = 8
x = 20 × 8 = 160 inches
We know that
Thus,
160 inches = 160/12 ≈ 13.3 feet
Therefore, the actual building is 13.3 feet tall.
Answer:
option C
Step-by-step explanation:
f(x)=-0.08x(x^2-11x+18)
Factor the parenthesis and find out the x intercepts
(x^2-11x+18)
We find out two factors whose product is 18 and sum is -11
-9 and -2 gives us product 18
-9 -2 gives us sum -11
(x^2-11x+18) =(x-9)(x-2)
f(x)=-0.08x(x^2-11x+18)
f(x)= -0.08x(x-9)(x-2)
set f(x) =0 and solve for x
-0.08x(x-9)(x-2) =0
-0.08x =0, so x=0
x-9 = 0 , so x=9
x-2 =0 , so x=2
x intercepts are (0,0) (2,0) and (9,0)
x intercepts are not repeating
so the graph crosses x -axis at x=0, 2,9
option C is correct
The graph is attached below4
Assuming the possible digits are from 0-9, there are 10*9*8 possibilities which come out to 720