Answer:
r= 13ft
Step-by-step explanation:
You are looking for the radius
The Area of a circle is
πr2=530.66
(3.14)r2=530.66
Divide both sides by 3.14
r2=169
Square root both sides to get radius
r=13 feet
Answer:
{2, 3, √13}
Step-by-step explanation:
In a right triangle, the sum of the squares of the two shorter sides equals the square of the third side (Pythagoras).
Let's check each set of sides in turn.
A. {2, 3, √13}
2² + 3² = 4 + 9 = 13
(√13)² = 13
This is a right triangle.
B. {5, 5, 2, √10}
This is a quadrilateral (four sides).
C. {5, 12, 15}
5² + 12² = 25 +144 = 169
15² = 225
This is not a right triangle.
Subtract 5r from both sides
2p= q-5r
Divide both sides by 2
p= (q-5r)/2
I think it would be easiest to solve for x in this system of equations if you did so by elimination:
Start by finding the least common multiple of 3 and 2 to make the Ys cancel:
4x-6y=-54
-9x+6y=69
_________
-5x=15
x=-3 - answer B
Distance = rate * time, or rewritten rate = distance / time ---> r = d/t
<span>4 laps, 1 mile per lap = 4 miles = d </span>
<span>12 minutes = 1/5 of hour (12 min/60 min = 1/5) = t </span>
<span>r = 4/(1/5) mph </span>
