Answer:
The time it will take Mel to finish mowing her part of the yard is approximately 53.3 minutes or 0.89 hours
Step-by-step explanation:
The given parameters are;
The portion of the yard mowed by Michael = 1/3 of the yard
The portion of the yard mowed by Mel =The rest of the yard = 1 - 1/3 = 2/3 of the yard
The rate at which Mel mows the yard = 3/4 of the yard in an hour = 3/4 of the yard/hour
The time it will take Mel to mow the remaining 2/3 portion of the yard = 2/3 of the yard/(3/4 of the yard/hour) = 8/9 hours or approximately 0.89 hours.
Answer: 2 rational solutions
Step-by-step explanation:
When the discriminant, b² + 2a, is greater than 0, there are two real solutions. 49 is the perfect square of 7, so the solutions are also rational: plus and minus 7
