Find the mean and standard deviation of the specified probability density function.f(x) = 0.3e-0.3x for [0, ?)
A. ? = 3.33, ? = 3.50
B. ? = 3.75, ? = 3.75
C. ? = 33.33, ? = 33.33
D. ? = 3.33, ? = 3.33
Answer: D
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A.
B.
C.
D.
Divide.-0.158 ÷ (-0.2)
A. 0.79 B. -0.358 C. 7.9 D. -0.79
Write the word phrase as an algebraic expression. Use x to represent the unknown number.The product of 14 and a number, added to 3
A. 42 + x B. 42x C. 14 + 3x D. 3 + 14x
Using the given triangle lattice, if possible, sketch the following shapes. If not possible, explain why.
(a) Sketch four non-congruent non-right parallelograms with AB as one side.
(b) Sketch all of the squares with AB as one side.
(c) Sketch all of the non-square rectangles with AB as one side.
(d) Sketch an isosceles trapezoid with AB as one side