Solve the problem.A solution contains 3% salt. How much water should be added to 52 ounces of this solution to make a 1.3% solution?
A. 68 oz
B. 76 oz
C. 71 oz
D. 65 oz
Answer: A
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Simplify. Write your answers in the form of a+bi, where a and b are real numbers.-4i(-5 + 4i)
A. 20i - 16i2 B. 16 - 20i C. 16 + 20i D. -16 - 20i
Solve the problem.A ceramics workshop makes wreaths, trees, and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint, and 8 hours to fire. A tree takes 14 hours to prepare, 3 hours to paint, and 4 hours to fire. A sleigh takes 4 hours to prepare, 13 hours to paint, and 7 hours to fire. If the workshop has 117 hours for prep time, 71 hours for painting, and 101 hours for firing, How many of each can be made?
A. 7 wreaths, 6 trees, 3 sleighs B. 6 wreaths, 3 trees, 7 sleighs C. 8 wreaths, 7 trees, 4 sleighs D. 3 wreaths, 7 trees, 6 sleighs
Solve the problem. Use 3.14 to approximate the value of ?. Round to nearest tenth unless instructed differently.The outfield wall in a baseball park is in the shape of a quarter circle. If the radius of the circle is 8 ft, how long is the wall?
A. 25.1 ft B. 10.6 ft C. 12.6 ft D. 6.3 ft
Solve the problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 45 staff members and needs at least 30 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 35 counselors and 10 aides B. 18 counselors and 12 aides C. 27 counselors and 18 aides D. 12 counselors and 18 aides