Use a system of linear equations to solve the problem.Two cars leave a city and head in the same direction. After 3 hours, the faster car is 21 miles ahead of the slower car. The slower car has traveled 132 miles. Find the speeds of the two cars.
A. 46 mph and 53 mph
B. 70 mph and 77 mph
C. 37 mph and 44 mph
D. 44 mph and 51 mph
Answer: D
Mathematics
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Solve the problem.A tree casts a shadow that is 60 ft long when a 5 ft tall woman casts a shadow of 9 ft. How tall is the tree?
A. 108 ft
B. 45 ft
C. 60 ft
D. 33
ft
Mathematics
Find the area of a square flower garden with the given length of a side.Side = 11 m
A. 121 m2 B. 122 m2 C. 22 m2 D. 1210 m2
Mathematics
Use a graphing calculator to make a conjecture as to whether each equation is an identity.cos(x + y) = cos x + cos y
A. Not an Identity B. Identity
Mathematics
Factor the sum or difference of cubes.x5 + 64x2
A. x2(x + 4)(x2 - 4x + 16) B. x3(x - 4)(x2 + 4x + 16) C. (x + 4)(x2 - 4x + 16) D. x2(x - 4)(x2 + 4x - 16)
Mathematics