Find the angle between the given vectors. Round to the nearest tenth of a degree.u = 9i + 6j, v = 2i - 3j

A. 45°
B. 90°
C. 35°
D. 100°


Answer: B

Mathematics

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Solve the problem.In a certain coastal basin, the sea water contains 3.9 grams of salt per 1000 milliliters of water. How many grams of salt would be in 3 liters of the sea water?

A. 117 grams B. 0.117 grams C. 1170 grams D. 11.7 grams

Mathematics

Write out all the terms of the series.

A. 5x + 6x2 + 7x3 + 8x4  B. 4x + 5x + 6x + 7x C. 4x + 5x + 6x + 7x + . . .  D. 5x + 6x + 7x + 8x

Mathematics

Use substitution to determine whether the given ordered pair is a solution of the given equation.(6, 17); y = 4x - 7

A. Yes B. No

Mathematics

Sketch trajectories of solutions of z? = Az given the eigenvalues and associated eigenvectors of A. Classify the origin and assess its stability.

Mathematics