. The lengths of two vectors a and b, and the angle ? between them, are given. Find the length of their cross product, |a x b|.
What will be an ideal response?
0.149
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Solve the variation problem.The amount of simple interest earned on an investment over a fixed amount of time is jointly proportional to the principle invested and the interest rate. A principle investment of $3200.00 with an interest rate of 8% earned $1280.00 in simple interest. Find the amount of simple interest earned if the principle is $4600.00 and the interest rate is 6%.
A. $1840.00 B. $960.00 C. $1380.00 D. $138,000.00
Evaluate the integral in terms of natural logarithms.
A. ln 5
B. 
ln 
C. ln 
- 1
D. ln 
Find the inverse of the function.f(x) = 
A. f-1(x) = 
B. Not a one-to-one function
C. f-1(x) = (x + 3)2
D. f-1(x) = x2 - 3, x ? 0
Write an equation for the parabola.
A. y2 = -8x B. y2 = 8x C. x2 = -8y D. x2 = 8y