Answer:
64.1
Step-by-step explanation:
You use Pythagorean theorem which is x^2 +y^2=z^2 (^ this means to the power of) so you would get 55^2+33^2=z^2. solving this would get you z=64.1404708433 or 64.1
I'm pretty sure that it's the first one: direct variation; y=4x.
77.) x= {-5, 6}
78.) x= {-4, 9}
79.) x= {5/3, 2}
80.) x= {1/9, 3}
81.) x= {-6, 18}
82.) x= {-3√3 +4, 3√3 +4}
83.) x= {-7, -3}
84.) x= {-√85 +9 /2, √85 -9 /2}
Answer:

Step-by-step explanation:
we know that
1 mile=63,360 inches
step 1
Find the circumference of the wheels

we have
-----> the radius is half the diameter
substitute


assume


Remember that
The circumference of the wheels represent one revolution
Convert 59 miles per hour to inches per minute

using proportion find the number of revolutions

therefore
substitute
