Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the acceleration for the specific value of t.x = , y = , t = 9

A. 0; 117.1°
B. 0.01; 117.1°
C. 0.01; 297.1°
D. 0; 297.1°


Answer: B

Mathematics

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Translate the problem situation to a system of equations. Do not solve.Audreys Candy Store sold 64 individual pounds of jelly beans, one kind at $4.74 per pound and the other at $1.23 per pound. In all, $162.96 was taken in for the two types of jelly beans. How many pounds were sold?

A. x + y = 162.96; 4.74x + 1.23y = $64 B. x + y = 64; 4.74x + 1.23y = $162.96 C. x + y = 5.97; 4.74x + 1.23y = $162.96 D. x + y = 64; 5.97x + y = $162.96

Mathematics

Solve the problem.James, Carl, Mark, Antonio, Phillip, and Brad are friends at college. James, Antonio and Phillip have calculus together. Brad and Carl have the same English composition class. Draw a graph with vertices representing students and edges representing the relation "take a common class". How many components does the graph have? Identify a subgraph that is a complete subgraph with three vertices.

What will be an ideal response?

Mathematics

Evaluate, if possible

A. 4
B.
C.
D. 2a

Mathematics

Indicate whether the number is prime or composite.100

A. Composite B. Prime

Mathematics