Write a system of linear equations that models the situation. Do not solve.An isosceles triangle has a perimeter of 29 inches. The shortest side is 7 inches shorter than either of the other two sides. Find the length of each side of the triangle (recall that an isosceles triangle has two sides with equal measure).
A. 2x + y = 29
x - y = 7
B. 2x + 2y = 29
x - y = 7
C. x + y = 29
x + y = 7
D. x + 2y = 29
x - y = 7
Answer: A
Mathematics
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The time required for a car to travel a certain distance varies inversely as the rate at which it travels. If it takes 10 hours at 60 miles per hour to travel the distance, how long will it take at 100 miles per hour?
A. t = 6 hours B. t = 10 hours C. t = 5 hours D. t = 9 hours E. t = 4 hours
Mathematics
Subtract. Simplify, if possible.
- 
A. 8
B. 7
C. 10
D. 8
Mathematics
Find the foci of the ellipse.16x2 - 96x + 25y2 - 150y - 31 = 0
A. (-1, 3), (7, 3) B. (0, 3), (6, 3) C. (3, -1), (3, 7) D. (-2, 3), (8, 3)
Mathematics
Simplify.
A. 1 B. Not defined C. 82 D. 0
Mathematics