Since there are 43560 feet in an acre, 285 feet is 0.654% of an acre.
Hope this helps!
Answer:
Arlo drove 130 miles
Step-by-step explanation:
Set up an equation:
39.99+.35x=85.49
.35x=45.5
x=130 miles
Answer:

Step-by-step explanation:
sec(theta) is defined as: 
In the diagram you provided the hypotenuse of the triangle is sqrt(41) and the opposite side is 5, using these two sides, we can solve for the adjacent side by using the Pythagorean Theorem: 
So this gives us the equation where a=adjacent side:

Subtract 25 from both sides

Take the square root of both sides

So now plug this into the definition of sec(theta) and you get:
. This is in most simplified form since 41, has no factors besides 41 and 1.
What happened in the first questions doesn't influence the final question, so the probability is simply 1/5 = 0.2
Answer:
133 ft
Step-by-step explanation:
Given in the question,
length of the rectangle = 31 ft
width of the rectangle= 20 ft
diameter of semicircle = 20 ft
radius of semicircle = 20/2 ft = 10 ft
Formula to use:
<h3>perimeter of rectangle + perimeter of semicircle</h3>
perimeter of rectangle = 2(l+w)
perimeter of semicircle = 1/2(2πr)
Plug values in the formula above
2(31 + 20) + 3.14(10)
133.4 ft
≈ 133 ft