Answer the question.Choose the expression that is equivalent to the following: 7 - 7
A. (-2)(7)
B. (7)(7)
C. 7 + (-7)
D. 2(7)
Answer: C
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For the pictured triangles, they are:
(a) Congruent by SSS.
(b) Congruent by SAS.
(c) Congruent by ASA.
(d) Congruent by SSA.
(e) Congruent by AAA.
(f) Not necessarily congruent.
Solve the application.A silo has the shape of a right cylinder with a hemisphere on top. If the cylinder part of the silo is 14 meters long and the diameter is 12 meters, as shown, find the volume of the silo. Use 3.14 for ? to approximate the answer to two decimal places if necessary.
A. 2034.72 cm3 B. 376.8 cm3 C. 1582.56 cm3 D. 1431.84 cm3
Solve the problem.A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 12 inches by 25 inches by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x.
A. V(x) = x(12 - x)(25 - x) B. V(x) = x(12 - 2x)(25 - 2x) C. V(x) = (12 - 2x)(25 - 2x) D. V(x) = (12 - x)(25 - x)
Solve the problem.A restaurant offers a choice of 4 salads, 10 main courses, and 4 desserts. How many possible 
meals are there?
A. 320 possible meals B. 160 possible meals C. 40 possible meals D. 18 possible meals