Solve.Hye-Ran, who is 1.90 m tall, wishes to find the height of a tree with a shadow 32.99 m long. She walks 23.02 m from the base of the tree along the shadow of the tree until her head is in a position where the tip of her shadow exactly overlaps the end of the tree top's shadow. How tall is the tree? Round to the nearest hundredth.
A. 6.29 m
B. 1.90 m
C. 3.23 m
D. 2.72 m
Answer: A
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Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 9), (9, 0) symmetry: x-axis, y-axis B. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 0), (0, 9), (9, 0) symmetry: origin C. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 9), (9, 0) symmetry: x-axis, y-axis, origin D. not a function
Write the complete factored form of the polynomial f(x), given the indicated zero.f(x) = 3x3 + 7x2 - 18x + 81 is a zero.
A. f(x) = 3
(x + 4)(x - 1)
B. f(x) = 
(x + 4)(x - 1)
C. f(x) = 
(x + 4)(x - 1)
D. f(x) = 3
(x + 4)(x - 1)
For a triangle with side lengths 1.5 feet, 2 feet and 3 feet, the area of the triangle is:
(a) Approximately 1.3 feet2. (b) Approximately 4.5 feet2. (c) Approximately 1.5 feet2. (d) Approximately 4 feet2. (e) None of these are correct.
The graph of a function f is given. Use the graph to answer the question.How often does the line y = -10 intersect the graph?
A. once B. twice C. three times D. does not intersect