Zero cannot be a denominator.
Answer:
Ali's heart rate is 135 beats per minute
Step-by-step explanation:
Let
x ----> Ali's heart rate
y ----> Ben's heart rate
we know that
isolate the variable x
----> equation A
we have
---> equation B
Solve the system by substitution
substitute equation B in equation A
Solve for x
simplify
therefore
Ali's heart rate is 135 beats per minute
This should give u a better understanding.