Solve.Martha can rake the leaves in her yard in 3 hours. Her younger brother can do the job in 4 hours. How long will it take them to do the job if they work together?
A. 
hr
B. 
hr
C. 12 hr
D. 4 hr
Answer: B
Mathematics
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Solve the problem.A swimming pool is in the shape of a square. The corners are 7 meters apart. If someone swims diagonally across the pool, how far would they swim? Give the exact answer and an approximation to the nearest thousandth when appropriate. 
7 m
A. c = 7 m
B. c = 
m ? 7.071 m
C. 
m ? 3.742 m
D. 
m ? 9.899 m
Mathematics
Add. Do not use a number line except as a check.-2.4 + (-7.1)
A. 9.5 B. -9.5 C. -4.7 D. 4.7
Mathematics
Determine whether the pair of fractions is equivalent.
and 
A. equivalent B. not equivalent
Mathematics
The coordinates of two vertices of an equilateral triangle are (1, 1) and (5, 1). What are the coordinates of the third vertex?
What will be an ideal response?
Mathematics