Answer:
D. 4r + 3(10 – r) = 37
Explanation:
Let r be the roller coaster ride. Since it costs 4 tickets, this gives us the expression 4r.
We know that there were 10 rides total; this leaves Michael 10-r for the number of times he rode the boat ride.
Each boat ride costs 3 tickets; this gives us the expression
3(10-r)
Together, this gives us
4r+3(10-r) = 37
The length of the shortest piece is 5cm.
Given that the length of the board = 62cm
Let the length of the first piece be x cm.
Hence, according to the question,
Length of the second piece = 2x cm
Length of the third piece = (2x + 7) cm
We have to find the length of the shortest piece.
Hence, we can write,
62 = x + 2x + (2x + 7)
62 = 5x + 7
5x = 62 - 7 =55
x = 55/11 = 5 cm
Hence, the shortest side is the first side of 5 cm.
To learn more about length, here:-
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Correct good job that seem correct
do 6 - 15 and the answer of that will be n which is 9
For time-speed-distance problems, you use the relationship
.. speed = distance/time
in any of its various forms.
The distance traveled at A mph is
.. distance = speed * time
.. distance = A*3
The time required for the rest of the journey is
.. time = distance / speed
.. time = (C -3A)/B
The the total time required to travel C miles is the 3 hours for the first part plus the time for the rest of the journey.
.. total journey time = 3 + (C -3A)B . . . . . hours
