Solve. Round to the nearest tenth.A 20-ft-tall ladder is placed so that it reaches 18 ft up on the wall of a house. How far is the base of the ladder from the wall of the house?
A. 76 ft
B. 26.9 ft
C. 8.7 ft
D. 724 ft
Answer: C
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Determine the type of curve from the given information.The cross section of a satellite dish is in the shape of a conic with the receiver sitting at the only focus point. What type of curve is represented by the cross section of the dish?
A. Circle B. Ellipse C. Parabola D. None of the above
Write the given Hindu-Arabic numeral as a Chinese numeral.3057
A. 
B. 
C. 
D. 
Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.3-7/9ax-2/3z3
A. 
B. 
C. 
D. 
Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.When four times the number is added to 7 times the number, the result is 33. What is the number?
A. 4.7 B. 1 C. 3 D. -4.7