Solve the problem.Martha can rake the leaves in her yard in 2 hours. Her brother can do the job in 8 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: B
You might also like to view...
Simplify using the product-to-power rule.(-3a6b4)3
A. 27a9b7 B. 27a18b12 C. -27a18b12 D. -27a9b7
For the parametric equations given, use a graphing calculator to generate the curve over the stated interval for the parameter t. Use the window specified. Also, find a rectangular equation for the curve.x = t3 + 1, y = t3 - 5, for t in [-2, 2]
A. 
The rectangular equation for the curve is
y = - x2, for x in [-4, 4].
B. 
The rectangular equation for the curve is
y = - x - 6, for x in [-7, 9].
C. 
The rectangular equation for the curve is
y = x3, for x in [-3, 1].
D. 
The rectangular equation for the curve is
y = x - 6, for x in [-7, 9].
Simplify.16-3/2
A. -24
B. 
C. 
D. -64
Simplify the expression. Assume all variables represent positive real numbers.
- 
A. -1
B. - 
C. - 2
D. -2