we know that
step 1
multiply
by 
so

step 2
Divide numerator and denominator by 

therefore
the answer is

Answer:
The distance from the star to the second checkpoint is 4 miles
Step-by-step explanation:
The complete question in the attached figure
we know that
When you get to the second checkpoint, you are 1/4 of the distance to the finish
so
The distance from the star to the second checkpoint is equal to the total distance multiplied by 1/4
The total distance is 40 miles ( see the attached figure)
so
The distance from the star to the second checkpoint is

<em>Find out the distance from the start to the first checkpoint</em>
Multiply the distance from the star to the second checkpoint by 2/5
Proportional because there is no + x at the end<span />
Answer:
2.57 x 10^(-5)
Step-by-step explanation:
you have to move the comma sign in front of the first number considering 0 as a non-number.