Question

PlEaSe HeLp GiViNg BrAiNlIeSt​

Answer 1

2. The total number of ski trails is 12. That's how many numbers there are in the box.

3. The difference in length between the longest ski trail and the shortest ski trail is the biggest number minus the smallest number in the box. 3 1/8 minus 1 3/8 is 1 and 3/4. So the answer is 1.75 or 1 3/4, whichever one works.

4. There are 3 trails that are 2 7/8 miles long. so You do 2 7/8 times three or 2 7/8 plus 2 7/8 plus 2 7/8. That equals 8 19/40 which is the answer. Ti add them together first turn them into mixed numbers. 2 7/8 is the same as 23/8. 8x3=24.  23x3=69. 69/24 is the same is 8 19/40 through further simplification.

5. 3 1/8 plus 1 3/8 is 4 1/2 or 4.5

6. The shortest ski trail is 1 3/8.   1 3/8 times 3 is 4.125. 4 is greater than 3 which means Sam is automatically right.

Answer 2

Answer:

1. See attached for dot plot

2. 12

3. longest ski trail = $3\frac14$

  shortest ski trail = $1\frac38$

  ⇒ difference = $3\frac14-1\frac38=1\frac78$ miles

4. There are 3 trail that are $2\frac78$ miles long.

   ⇒ total length = $3 \times 2\frac78=8\frac58$ miles

5. Sum of shortest trail and longest trail = $3\frac14+1\frac38=4\frac58$ miles

6. 3 times the shortest trail = $3 \times 1\frac38=4\frac18$ miles

   longest trail = $3\frac14$ miles

   Therefore, Eli is correct as $3\frac14$