Solve.Martha can rake the leaves in her yard in 3 hours. Her younger brother can do the job in 5 hours. How long will it take them to do the job if they work together?
A. 
hr
B. 
hr
C. 5 hr
D. 
hr
Answer: A
Mathematics
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Solve by isolating the absolute value and using the absolute value property.2 - 
= -7
A. 
B. 
C. 
D. 
Mathematics
Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 8x + 4y - 5 = 0 
A. (h, k) = (4, -2); r = 5
B. (h, k) = (4, 2); r = 5
C. (h, k) = (-4, -2); r = 5
D. (h, k) = (-4, 2); r = 5
Mathematics
Perform the indicated operations and simplify the result so there are no quotients to complete the identity.
- 
= ?
A. sin ? tan ? B. 1 + cot ? C. -2 tan2? D. sec ? csc ?
Mathematics
Use properties of limits to find the indicated limit. It may be necessary to rewrite an expression before limit properties can be applied.
(x - 4)(
- 2)
A. 0 B. does not exist C. 2 D. 4
Mathematics