Answer:
322.9 ft
Step-by-step explanation:
See attachment for the diagram
ro: radius of outer circle
ri: radius of inner circle
Length of inner railing= circumference of inner semi-circle+ twice of inner horizontal sides
Length of inner railing= ri+ 2×(70- ro)
= × 45/2+ 2×(70-65/2)
=145.71 ft
Lenth of outer railing= circumference of outer semi-circle+ twice of outer horizontal sides
= ro+ 2×(70- ro)
= × (65/2) + 2×(70-65/2)
=177.14ft
Total length of railing =177.14+145.71
= 322.85ft
Answer:
x = 3.8
y = 15.2
Step-by-step explanation:
y = 4x
y = 19 - x,
if y = y then,
4x = 19 - x
5x = 19
x = 19/5 = 3.8 now inputting the answer to x into one of the unchanged equations above (y = 4x),
y = 4x = 4*3.8 = 15.2
Double check:
y = 19 - x = 19 - 3.8 = 15.2
Answer:
t = 36
Step-by-step explanation:
If one of the roots is "a", the equation can be factored as ...
(5x -a)(x -a) = 0
5x^2 -6ax +a^2 = 0
Comparing terms to the given equation, we see that ...
-6ax = -36x
a = 6 . . . . . . . . divide by -6
Then ...
a^2 = t
36 = t . . . . . . . substitute 6 for a
_____
The roots are 6 and 6/5.
We have been given an equation . We are asked to find the solution of our given equation.
We will use quadratic formula to solve our given problem.
To apply quadratic formula, we need our equation in form .
Now we can see that .
Therefore, the solutions of our given equation are .
When you divide by the reciprocal, you flip the numbers and multiply across.