Just a couple of rules are needed to solve this.
a) When secants cross inside a circle, the measure of the angle where they cross is the average of the measures of the intercepted arcs.
b) When secants meet outside the circle, the measure of the angle where they meet is half the difference of the measures of the intercepted arcs.
c) As a corollary to the first rule, if the secants meet on the circle, the angle where they meet is half that of the intercepted arc (because the other angle in the averge is zero).
I’m going to guess 3751? Because if it doubles every twelve years then it multiplies by .1667 every year so multiply .1667 by 12 doubles the number, so multiplying .1667 by 15 should be 3751 if rounded.
Answer:
n = -14
Step-by-step explanation:
-3(n+9)=15
Distribute -3 to (n+9):
-3n - 27 = 15
Add 27 to both sides:
-3n = 42
Divide both sides by -3:
n = -14
Jessica runs fastest because her time/second is about 10 seconds while brookes is around 12.