She has paid for 11 rides.
She started with 50 dollars and at the end she has 6 dollars left. Each ride costs 4 dollars. The follow equation could be created:
$6 = $50 - $4r
Six dollars remaining = original fifty dollars - four dollars per ride.
The number of rides is represented by the variable r.
To solve:
$6 = $50 - $4r
Subtract 50 from both sides
-$44 = -$4r.
Divide each side by -4 to get the number of rides (r)
11 = r
Therefore, she has paid for 11 rides.
Use a squared + b squared = c squared
60x60=3600
30x30=900
3600+900=3660
Square root 3660
=60.49
Rounded is 60 inches
The area of a circle:

r - the radius, which is equal to half the diameter d
The first circle:

The second circle:
the second circle has a diameter that is four times the diameter of the first circle.

The ratio of the area of the smaller cirlce to the area of the larger circle:

The ratio is 1:16.
You gave $30.
[$30 * 0.20] (tip % amount) = $6.
You left $6 in tips.
Answer:
4
Step-by-step explanation:
square root of 18 is 4.2426 so round that and it is 4