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  • Algebra II
    • The Question – First HW Assignment
    • Quarter 1 – Linear Functions
      • What is a Function?
      • Homework and Classwork – Week 1
      • Wks 2 and 3 – Turtle vs. Hare TO Slope Intercept Form
      • Connections to Linear Functions
      • Questions about Linear Inequalities
      • Connections to Linear Inequalities (and Their Graphs)
      • Links to Linear Inequalities
      • Solving Linear Systems
      • Linear Programming
      • More Complex Linear Systems (Ends 12/9)
    • Quarter 2 – Quadratics
      • Quadratics, Week 1 (11/28 – 12/2)
      • What is a Quadratic Function?
      • Graphing Absolute Value Equations
      • Quadratic Concepts, Week 4 (12/19 – 12/22)
      • Quadratic Modeling, 1/3 – 1/6
      • Solving Quadratics By Factoring, Last Concept of Quarter 2
      • Complex Numbers, Week of 2/22 – 2/24
    • Getting Ready for the Midterm Exam
    • Quarter 3 – Putting Quadratics to Work
      • Concept A: Quadratics (2/1-2/10)
      • Concept C: Inverse Functions (2/27 – 3/8)
      • Concept D: Rational Expressions (Quiz on 3/27)
      • Concept E: Using Rationals to Do Work
    • Quarter 4: Exponential Thoughts
      • Concept A: Arithmetic vs. Geometric Sequences
      • Concept B: Percent Increase and Decrease
      • Concept C: Compounding Interest
      • Concept D: Solving Exponential Problems
      • Concept E: Exponential & Logarithmic Regression
      • Concept F: Inverting (Undoing) Power Functions
    • Final Exam Preparation
  • Geometry
    • The Question – First HW Assignment
    • Unit 1 – The Basics of Geometry
      • 1.2 Pythag Thm – hw due Fri 9/9
      • Who was Pythagoras?
      • 1.3 Segments and Their Measurement
      • CAPT HW and Bridge to Section 1.4 – due 9/15/11
      • 1.4 Angles & Their Measures
      • 1.5 Bisecting Segments and Angles
      • Review 1.4 and 1.5
      • 1.6 Special Pairs of Angles
      • 1.7 – Perimeter and Area
      • Unit 1 Connections
    • Unit 2 – Laws and Logic of Geometry
      • 2.1 Conditional Statements
      • 2.2 Converses and Biconditionals
      • Study for Quiz 2a (2.1 – 2.2)
      • CAPTivating HW After Quiz 2a
      • Proofs, 101: HW Due 10/24
      • Who Was Euclid?
      • 2.4 Algebraic Reasoning
      • 2.5 Proofs About Segments
      • Review 2.4 and 2.5 for Quiz
      • HW After Quiz 2B, Due 11/10
      • 2.6a – Angle Proofs, Part 1
      • 2.6b – Angle Proofs, Part 2
      • Studying for Chapter 2 Test
      • Real World Connections to Unit 2
      • Links related to Unit 2 Material
    • Unit 3 – Perpendicular and Parallel Lines
      • Starting Chapter 3, HW Due 11/21
      • Due 11/22, 3.1: Lines & Angles
      • Due 11/23, Parallel Lines & Transv.
      • Due 11/29: Study for Quiz 3a
      • Due 11/30, Prep for 3.4
      • Due 12/1 & 5: 3.4 – Proving Parallelity
      • 3.5: Using Parallelity
      • After Quiz 3b, Prep for 3.6, Due 12/6
      • 3.6: Slope and Parallel Lines, Due 12/7
      • Due 12/8, 3.7: Slope and Perp. Lines
      • Real Connections to Unit 3
    • Unit 4 – Congruent Triangles
      • 4.1 Triangles and Angles
      • 11.1 – Polygon Degree Measures
      • 4.2 – Congruence and Triangles
      • Studying for Quiz 4A
      • 4.3 SSS and SAS – Due 1/4
      • 4.4 ASA and AAS – Due 1/5
      • Getting Ready for Quiz 4b
      • 4.5 – Using Triangle Congruence – Due 1/10
      • Getting Ready for Quiz 4c
      • 4.6 Isosceles, Equilateral, and Right Triangles – due 1/13/12
      • 4.7: Triangles and Coordinate Proof, Due 1/18
      • Getting Ready for Chapter 4 Test
    • Midterm Exam Review
    • CAPTivating Practice
    • Unit 5 – Properties of Triangles
      • 5.1 – 5.3: Dividing & Conquering Triangles
      • 5.1-5.3 Connections
      • 5.4 – 5.5 Triangles, Continued
      • CAPT Problems, Due 2/23
      • 5.4 – 5.5 Connections
      • Prep for Chapter 5 Test
    • Unit 6 – Quadrilaterals
      • 6.1: Polygons (due 3/7)
      • 6.2: Parallelograms
      • 6.4: Rhombuses, Rectangles and Squares
      • Prep for Quiz 6a: 6.1, 6.2, 6.4, 6.5
      • 6.7 – Area of Triangles and Quadrilaterals
      • Geometry Chapter 6 Test Prep
    • Unit 8 – Similarity
      • 8.1 – Ratio and Proportion (3/29 – 4/2)
      • 8.2: Proportional Thoughts
      • Quiz 8a – 8.1 – 8.2
      • 8.6: Wrapping up Ch 8
      • Quiz 8b Prep (8.3, 8.4, 8.6)
      • Chapter 8 Test Prep
    • Unit 9 – Right Triangles & Trig
      • 9.1 – Geometric Means in Right Triangles
      • 9.4 – Special Right Triangles (Due 5/4)
      • 9.5 – Trig Ratios
      • Getting Ready for Quiz 9a…
    • Unit 11 – Area of Polygons and Circles
      • 11.1 – 11.3: Polygon Basics
      • Getting Ready for Quiz 11a (11.1 – 11.3)
      • 11.4-11.6 – Second part of Chapter 11
      • Chapter 11 Test Preparation
    • Chapter 12 – Surface Area and Volume
      • 12.1 – 12.3 Concepts
      • 12.4-12.6 Concepts
      • Chapter 12 Final Assessment
    • Getting Ready for the Final Exam!
  • Past Years
    • Fund.Algebra II (Teams 1 & 3, 2010-11)
    • Honors Precalculus (Teams 2 & 7, 2010-11)
      • Chapter 1 (Functions & Their Graphs)
      • Chapter 2 (Polynomial & Rational Functions)
      • Chapter 4 (Trigonometry)
        • Sections 1 and 2
        • Section 3 (Rt.Triangle Trig.)
        • Section 4 (Trig. Fcns. of any Angle)
        • Section 5 (Graphs of Sine and Cosine Fcns)
        • Section 6 (Graphs of Other Trig Fcns)
        • Section 7 (Inverse Trig Functions)
        • Review Chapter 4
        • Section 8 (Applications & Models)
      • Chapter 5 (Analytic Trigonometry)
        • 5.1 – Using Fundam.Identities
        • 5.2 – Verifying Identities
        • 5.3 – Solving Trig Equations
        • 5.4 – Sum & Diff Formulas
        • 5.5 – Multiple Angle & Product to Sum Formulas
        • Chapter 5 Review
      • Chapter 6 (Additional Topics in Trig)
        • 6.1 – Law of Sines
        • 6.2 – Law of Cosines
        • 6.3 – Vectors in the Plane
        • 6.4 – Vectors & Dot Products
        • 6.5 – Trig Form of a Complex Number
        • Chapter 6 Review
      • Midterm Exam Review
      • Chapter 3 (Exponential & Logarithmic Functions)
        • 3.1 – Exponential Functions & Graphs
        • 3.2 – Logarithmic Functions & Graphs
        • 3.3 – Properties of Logarithms
        • 3.4 – Exponential & Logarithmic Equations
        • Chapter 3 Review
      • Chapter 8 – Matrices & Determinants
        • 8.1 – Matrices & Systems of Equations
        • 8.2 – Operations with Matrices
        • 8.3 – The Inverse of a Square Matrix
        • 8.4 – The Determinant of a Square Matrix
        • 8.5 – Applying Matrices & Determinants
        • Chapter 8 Review
      • Chapter 9 – Seq, Series, & Prob.
        • 9.1-3 – Sequences & Series
        • Koch Snowflake Page
        • 9.4 Induction
        • 9.5 Binomial Theorem
        • 9.6 Counting Principles
        • 9.7 Probability
        • Chapter 9 Review
      • Chapter 10 – Analytic Geometry
        • 10.2 – Parabolas
        • 10.3 – Ellipses
        • 10.4 – Hyperbolas
        • 10.7 – Polar Coordinates
        • 10.8 – Graphs of Polar Equations
        • Chapter 10 Review
      • Chapter 11 – 3D Analytic Geometry
        • 11.1 – Three Dimensional Space
        • 11.2 – Vectors in Space
        • 11.3 – The Cross Product of 2 Vectors
        • 11.4 – Lines and Planes in Space
      • Final Exam Review
      • Great Math Reading!
        • Trillion Triangle Problem
    • Standard Algebra II (Team 8, 2010-11)
      • Chapter 2
      • Chapter 3
      • Chapter 5 – Quadratic Functions
      • Midterm Exam Review
      • Chapters 6 and 7 – Rational Power Functions
      • Chapter 8 – Exponentials and Logarithms
      • Chapter 9 – Rational Equations and Functions
      • Final Exam Review
      • Great Math Reading!
        • Trillion Triangle Problem
• Coding Pages
  • Conard Curve Calculator
  • AP Comp Sci
    • FAQ
  • TI Talk

One Response to “9.7 Probability”

1. machiavelli says:

   May 14, 2011 at 8:52 pm

   I didn’t get the explanation for question 13(?) that you gave us. Specifically with the “at least” part. I got 1/5, because that is the probability for one paycheck out of five envelops, independent of the others. The explanation on the answer sheet didn’t really explain that, so could you go over it monday?

   Reply

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