Answer:
You know that a value is a soloution to a problem when you add the value into the problem to check if it solves the problem. :)
Step-by-step explanation:
Answer:
5m - 5n - 1
Step-by-step explanation:
(3m - 4n - 7) - (8m + n - 6) =
3m - 4n - 7 - 8m - n + 6 =
5m - 5n - 1
The answer would be D. 7 weeks, $230.
Explanation: y would be the total amount after x weeks. So, to find the answer, simply go through your choices and insert x and y. Both y's for Joy and Cullen have to match up for the answer to be correct.
For answer D, it looks like:
Joy: 30(7) + 20 = 230
Cullen: 20(7) + 90 = 230
Answer:
The car travelled 73 miles
The boat travelled 53 miles
The car arrived 17.7 minutes before the boat
Step-by-step explanation:
The total distance the car travelled from Point A to Point B = 28+45 = 73 miles
The total distance the boat travelled is given by the displacement; Using Pythagorean theorem = 53miles.
Time taken by the car = Distance/Speed = 73/40 = 1.825 hrs or 109.5 minutes
Time taken by the boat = Distance/speed = 53/25 = 2.12 hrs or 127.2 minutes.
The time taken by the car is the shortest, therefore it arrives first before the boat.
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Answer:
B
Step-by-step explanation:
