Solve.A square piece of cardboard is to be formed into an open-topped box by cutting
squares from the corners and folding up the sides. The volume of the resulting box is given by the formula
where x is the original length of each side of the piece of cardboard. Rewrite this volume equation by factoring completely.
A. (x - 8)2
B. 4(x - 8)(x + 8)
C. 4(x + 8)2
D. 4(x - 8)2
Answer: D
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Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The owners of a candy store want to sell, for $6 per pound, a mixture of chocolate-covered raisins, which usually sells for $3 per pound, and chocolate-covered macadamia nuts, which usually sells for $8 per pound. They have a barrel of the raisins. How many pounds of the nuts should they mix with the barrel of raisins so that they hit their target value of $6 per pound for the mixture?
A. 70 lb B. 80 lb C. 65 lb D. 75 lb
Find the dimension of the matrix. Tell if the matrix is a square, column, or row matrix, when applicable.
A. 4 × 1; column B. 4 C. 1 D. 1 × 4; row
Find the volume of the solid. Use 3.14 for ?. Round to the nearest hundredth, if necessary.
A. 113,040 mm3 B. 226,080 mm3 C. 28,260 mm3 D. 3768 mm3
Find the average.24, 29, 28
A. 81 B. 27 C. 26 D. 28