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# Solutions for Chapter 9.7: Probability

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 9.7: Probability

Solutions for Chapter 9.7
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##### ISBN: 9780618643448

Precalculus was written by and is associated to the ISBN: 9780618643448. This textbook survival guide was created for the textbook: Precalculus, edition: 7. Since 74 problems in chapter 9.7: Probability have been answered, more than 30230 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. Chapter 9.7: Probability includes 74 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Average rate of change of ƒ over [a, b]

The number ƒ(b) - ƒ(a) b - a, provided a ? b.

• Compounded annually

See Compounded k times per year.

• Compounded k times per year

Interest compounded using the formula A = Pa1 + rkbkt where k = 1 is compounded annually, k = 4 is compounded quarterly k = 12 is compounded monthly, etc.

• Conjugate axis of a hyperbola

The line segment of length 2b that is perpendicular to the focal axis and has the center of the hyperbola as its midpoint

• Directed line segment

See Arrow.

• Fibonacci numbers

The terms of the Fibonacci sequence.

• Graph of a function ƒ

The set of all points in the coordinate plane corresponding to the pairs (x, ƒ(x)) for x in the domain of ƒ.

• Horizontal shrink or stretch

See Shrink, stretch.

• Left-hand limit of f at x a

The limit of ƒ as x approaches a from the left.

• Length of a vector

See Magnitude of a vector.

• Line of symmetry

A line over which a graph is the mirror image of itself

• Logarithmic re-expression of data

Transformation of a data set involving the natural logarithm: exponential regression, natural logarithmic regression, power regression

• Opens upward or downward

A parabola y = ax 2 + bx + c opens upward if a > 0 and opens downward if a < 0.

• Paraboloid of revolution

A surface generated by rotating a parabola about its line of symmetry.

• Perpendicular lines

Two lines that are at right angles to each other

• Solve by substitution

Method for solving systems of linear equations.

• Standard form of a complex number

a + bi, where a and b are real numbers

• Standard form: equation of a circle

(x - h)2 + (y - k2) = r 2

• Vertex form for a quadratic function

ƒ(x) = a(x - h)2 + k

• Vertices of a hyperbola

The points where a hyperbola intersects the line containing its foci.

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