Answer:
x = 50
Step-by-step explanation:
Let x be the original number.
This question can be expressed as:
0.4x = 20
0.4 of the original number is 20.
Now, we can directly solve for x:
4x = 200
x = 50
215 because you would add and subtract the numbers as you go them you come out with your answer
If he went 36 miles in 3 hours, he rode at a speed of 12 miles per hour (36/3=12). So if he rode his bike at that same speed for 5 hours he would go 60 miles (12x5=60).
(n-2)multiple 180 degrees the formula for finding the sum of all angles in a polygon regular here n represents the number of sides of the polygon.