Solve the problem.A solar reflector is made using 25 identical triangular-shaped mirrors, each having sides   . What is the total surface area of the reflector?

A. 28 sq m
B. 27 sq m
C. 30 sq m
D. 26 sq m


Answer: A

Mathematics

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Provide an appropriate response.Pat's Deli makes onion buns that cost $.48 each. 10 percent of the onion buns will spoil and be thrown away. Pat wants a 40 percent markup based on cost. Pat produces 800 onion buns. Each onion bun should sell for:

A. $0.75 B. $0.69 C. $0.80 D. $0.86

Mathematics

Solve the problem.Decide which of the rational functions might have the given graph. 

A. f(x) = 
B. f(x) = x2
C. f(x) = 
D. f(x) = 

Mathematics

Solve the problem.Suppose an animal feed to be mixed from soybean meal and oats must contain at least 100 lb of protein, 20 lb of fat, and 12 lb of mineral ash. Each 100-lb sack of soybean meal costs $20 and contains 50 lb of protein, 10 lb of fat, and 8 lb of mineral ash. Each 100-lb sack of alfalfa costs $11 and contains 30 lb of protein, 8 lb of fat, and 3 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost?

A. 2 sacks of soybeans and 0 sacks of alfalfa
B.  sacks of soybeans and  sacks of alfalfa
C. 0 sacks of soybeans and 2 sacks of alfalfa
D.  sack of soybeans and  sack of alfalfa

Mathematics

Find the exact value of the expression using a sum, difference, or double-angle identity.

A.
B. -
C. - 
D.

Mathematics