Divide and simplify.30 ÷ 
A. 
B. 
C. 20y
D. 
Answer: C
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Gravel is being dumped from a conveyor belt at a rate of 34 ft/min and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 13 ft high? Round the result to the nearest hundredth.
a. 0.6 ft/min
b. 2.26 ft/min
c. 0.14 ft/min
d. 0.27 ft/min
e. 1.24 ft/min
The dimensions of two matrices are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A is 2 × 1; B is 1 × 1.
A. AB is 2 × 2; BA is 1 × 1. B. AB is 2 × 1; BA is not defined. C. AB is 1 × 2; BA is 1 × 1. D. AB is not defined; BA is 1 × 2.
Identify the terms in the given expression.-5b + 3a + -5
A. -5, b, 3, a, -5 B. -5b, 3a, -5 C. 5b, 3a D. 5b, 3a, 5
Solve the problem.In how many ways can you answer the questions on an exam that consists of 7 multiple choice questions, each of which has 3 answer choices?
A. 3027 B. 2187 C. 1957 D. 343