Solve the problem.An electrician is working on a project for which she will need to run straight conduit pipe for lengths of 20 feet, 70 feet, and 140 feet. She wants to precut pieces of pipe to one standard length so that she can connect the pieces to obtain the three lengths she needs. What is the longest length that she can make the precut pieces?
A. 8 ft.
B. 5 ft.
C. 12 ft.
D. 10 ft.
Answer: D
Mathematics
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Solve the problem.One card is selected from a deck of cards. Find the probability of selecting a red card or a heart .
A. 
B. 
C. 0
D. 
Mathematics
Solve the problem.Let angle POQ be designated ?. Angles PQR and VRQ are right angles. If ? = 45°, find the exact length of US. 
A. 0
B. 
C. 
D. 1
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Solve the problem.A farmer has 600 yards of fencing to enclose a rectangular garden. Express the area A of the rectangle as a function of the width x of the rectangle. What is the domain of A?
A. A(x) = x2 + 300x; {x|0 < x < 300} B. A(x) = -x2 + 300x; {x|0 < x < 300} C. A(x) = -x2 + 600x; {x|0 < x < 600} D. A(x) = -x2 + 300x; {x|0 < x < 600}
Mathematics
Solve the equation.5.9n = -47.2
A. -8.0 B. -0.8 C. -9 D. 80
Mathematics