Find the magnitude and direction angle of the vector v. Round the direction angle to the nearest tenth of a degree when necessary.v = -5i + 7j
A. 
, 54.5°
B. 74, 125.5°
C. 12, 305.5°
D. 
, 125.5°
Answer: D
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Solve the problem.Use Newton's method to estimate the solutions of the equation 
. Start with
for the right-hand solution and with x0 = -2 for the solution on the left. Then, in each case find x2.
What will be an ideal response?
Evaluate the line integral along the curve C.
ds , C is the path given by:C1: r(t) = (9 cos t)i + (9 sin t)j from (9, 0, 0) to (0, 9, 0)C2: r(t) = (9 sin t)j + (9 cos t)k from (0, 9, 0) to (0, 0, 9)C3: r(t) = (9 sin t)i + (9 cos t)k from (0, 0, 9) to (9, 0, 0)
A. 
B. 
?
C. - 
?
D. 0
Use a proportion to solve the problem.Johnny's car will go 462 miles on 16.5 gallons of gasoline in highway driving. At this rate, how many gallons would be needed to travel 1126 miles on the highway?
A. About 45 gal B. About 38 gal C. About 40 gal D. About 43 gal
Two dice are rolled. Find the probability of getting a sum less than or equal to 4.
What will be an ideal response?