Solve the problem. Round your answer to the nearest tenth, if necessary.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 10 hr; 25 hr
B. 15 hr; 30 hr
C. 25 hr; 40 hr
D. 12.5 hr; 27.5 hr
Answer: B
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Find the ratio described as a fraction in simplest form.Find the ratio of the width to the length of the rectangular garden sketched below.
A. 
B. 
C. 
D. 
Encode or decode the given message, as requested, numbering the letters of the alphabet 1 through 26 in their usual order.Use the coding matrix A = 
and its inverse A-1 = 
to decode the cryptogram 
.
A. CURB B. CARE C. DARE D. BEAD
Use the following results the polar equation of the ellipse 
is 
to write the polar form of the equation of the conic 
middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_112b24ffd0ac4abfae04ec3d8" />.
?
A. 
B. 
C. 
D. 
E. 
Factor the polynomial completely. If the polynomial cannot be factored, write "prime."64 - m2
A. (8 - m)2 B. (8 + m)2 C. prime D. (8 - m)(8 + m)