Continuity — Unit test

Question 1

Given vectors and , find in terms of unit vectors and .a. c.b.d.

Revolt · Accepted Answer

A

Question 2

Find the magnitude and direction of .

Revolt · Accepted Answer

0.9 meters,

Question 3

Find an equation equivalent to x2 - y2 = 4 in polar coordinates.

Revolt · Accepted Answer

r2 cos2 = 4

Question 4

A piling for a high-rise building is pushed by two bulldozers at exactly the same time. One bulldozer exerts a force of 1250 pounds in a westerly direction. The other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. What is the magnitude of the resultant force upon the piling, to the nearest ten pounds?

Revolt · Accepted Answer

2930 lbs.

Question 5

Write the parametric form of the line, then graph the results.-6x + 18y = 36a.c.b.d.

Revolt · Accepted Answer

A

Question 6

Write parametric equations of the line with the equation .a.c.b.d.

Revolt · Accepted Answer

A

Question 7

Find the magnitude of the vector from the origin to and write the vector as the sum of unit vectors.

Revolt · Accepted Answer

10,

Question 8

Use the dot product to find when v = .a.c.b.10d.-6

Revolt · Accepted Answer

C

Question 9

Find an equation equivalent to r = 1 + 2 sin in rectangular coordinates. a. c. b. d. Please select the best answer from the choices provided

Revolt · Accepted Answer

C

Question 10

The graph of r = 1 + 5 sin is symmetric about the __________.

Revolt · Accepted Answer

y-axis only

Continuity — Unit test Answers

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