Estimate the sum or difference by first rounding to the nearest ten.6957

A. 2434
B. 2400
C. 2440
D. 2430


Answer: C

Mathematics

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Solve the problem.Evaluate by transforming to cylindrical or spherical coordinates.

A.
B.
C.
D.

Mathematics

Solve the problem.Two elliptical pathways in a park intersect as shown below. If the equations of the ellipses that represent the outermost perimeter of the pathways are  and 4x2 + y2 = 2500, at which points do the pathways intersect? 

A. (-10, -10), (-10, 10)
B. (-10, 10), (10, 10)
C. (10, -10), (10, 10)
D. (-10, -10), (-10, 10), (10, -10), (10, 10)

Mathematics

Using the appropriate right triangle, find the exact value of the trigonometric expression.csc 45°

A.
B. 1
C.
D.

Mathematics

Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.   

A. x = , y = - , z = - , w = - 
B. x = -2, y = -3, z = 5, w = 
C. x = -2, y = 3, z = 4, w = -2; (-2, 3, 4, -2)
D. x = 2, y = -3, z = -4, w = -2; (2, -3, -4, -2)

Mathematics