Solve the problem.Gary can hike on level ground 3 miles an hour faster than he can on uphill terrain. Yesterday, he hiked 38 miles, spending 2 hours on level ground and 5 hours on uphill terrain. Find his average speed on level ground.
A. 7
mph
B. 4
mph
C. 8 mph
D. 5
mph
Answer: A
Mathematics
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with a vertex at (0, 7) and a focus at (0, -3).
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Solve.
- 
= 
A. 51 B. 1 C. 6 D. -1
Mathematics
Solve.Find the perimeter. Approximate the result to the nearest tenth using 3.14 for ?.
A. 28.3 in. B. 30.6 in. C. 34.6 in. D. 24.3 in.
Mathematics
Solve the problem.Explain why 
= 5.
What will be an ideal response?
Mathematics