Bellwork 4/5 Do the Integrated Review Page 567 (31-45 odd)

Slides:

Advertisements

Similar presentations

7.1 Ratio and Proportion Geometry Ms. Kelly Slide #1.

Advertisements

Use Proportions to Solve Geometric Problems 6.2. Proportion Properties The Reciprocal Property: – If two ratios are equal, then their reciprocal is also.

Lesson 4-1 Ratio and Proportion

7.1 Ratio and Proportion Textbook page 357.

Proportion Ratio: A comparison of two numbers or two like quantities by division Rate: A ratio that compares quantities of different units Equivalent Ratios:

Chapter 7 Section 1.  Students will write ratios and solve proportions.

© William James Calhoun, : Ratios and Proportions OBJECTIVE: You need to be able to solve proportions using cross-multiplication. Initial terms:

PERCENT PROPORTIONS Using Proportions 4-1. Vocabulary Review Ratio: The comparison of two numbers (written in Algebra as a fraction) Proportion: When.

Chapter 7: Similarity.

Answers to Homework 2) 1:14) 5:16) 6 to 5 8) 11 to 1210) 11/1712) 6:5:12 14) 6:11:1716) 5:318) 20:17 20) 1:522) 2d/5c24) 40,50 26) 45,60,7528) 67.5,67.5,45.

Purpose: To Solve problems using proportions. Homework: p odd, and p all.

Proportional Reasoning Section 2.3. Objectives:  To solve problems using proportional reasoning.  Use more than one method to solve proportional reasoning.

USING PROPORTIONS (OBJECTIVE: USING PROPORTIONS TO SOLVE REAL WORLD PROBLEMS) MS. BATTAGLIA/ MR. BALDINO.

4.1 Ratio and Proportion Ratio – comparison of two numbers by division. –Can be written: a to b a : b where b ≠ 0. If a and b represent quantities measured.

6.1.1 RATIOS, PROPORTIONS, AND THE GEOMETRIC MEAN Chapter 6: Similarity.

6.1 – Ratios, Proportions, and the Geometric Mean.

Using Proportions Lesson 4-1. Ratio: The comparison of two numbers (written in Algebra as a fraction) Proportion: When two ratios are equal to each other.

Rates, Ratios, Proportions & Unit Rate By Colin C.

Chapter 9: Lesson 4: Solving Percent Problems with Proportions

Chapter 10: Lesson 4: Solving Percent Problems with Proportions

Fractions, Decimals, and Percents 6.5. Percent Ratio compares a number to a 100.

Math IA Warm Up: 1.Solve. How did you clear the fraction? x = 9x = 27 3Multiply by the denominator 2. Solve. What process do you use to clear fractions.

7-1 Ratios and Proportions I CAN Write a ratio Write a ratio expressing the slope of a line. Solve a linear proportion Solve a quadratic proportion Use.

3.9 Proportions Goal to solve problems involving proportions.

Ratio and Proportion Day 8. Day 8 Math Review Math Review Quiz Day.

Objective The student will be able to: multiply two polynomials using the distributive property.

Solving Proportions Section 2-7. Goals Goal To solve and apply proportions. Rubric Level 1 – Know the goals. Level 2 – Fully understand the goals. Level.

Ratios and Proportions Percent Change. Proportion – Statement showing two ratios as equal.

Bellwork Do worksheet 1.1 (2-28 ev).

Aim: what you’ll learn Express percents as fractions and vice versa Express percents as decimal and vice versa. Do Now:

Multiplying Decimals 3-6 & 3-7.

Using Proportions – Less 6.6

7.1 Ratio and Proportions Pg 356

Do now In skills review packet #

Lesson 85 Warm Up Pg. 441.

Algebra Bell-work 9/1/17 1.) 3x – 3 – x = 2x – 3 2.) 3x – 7 = 3x + 5

Obj: to use ratios to solve problems

HW # 65 - Area and Volume worksheet # 7-10

2-7 Solving Proportions.

1.) How many triangles can be found in each drawing?

6.2/6.3: Properties of Parallelograms

Lesson 5-1 Using Proportions.

Section 5.3A Solving Proportions Section 5.3A Solving Proportions

2-6 Ratios and Proportions

1.) 3/4 = x/96 2.) x/(x + 4) = 2/x Bellwork 4/11

6.2 Proportions.

Bellwork Find the x and y values Y (-5,2) (3,3) X (-3,-1) (4,-3)

Bellwork ~ Solve & Graph

Bellwork Change to Addition

Using Proportions.

Finding a Percent of a Number

Unit 6: Ratios: SPI : Solve problems involving ratios, rates, and percents Remember to have paper and pencil ready at the beginning of each.

Bellwork 3(x + 4) = 14 5(a - 4) = 3a 5 + 3(n - 7) = 10

1.) (x - 3)/4 = 6 2.) x/3 + 4 = 10 3.) 2a - 3 = 5a ) 2(3 - x)

1.) x/4 = 27/36 2.) 5/x = 27/30 3.) (x+6)/(x-2) = 2/x 4.) Next Slide

Solving Quadratics by Factoring

Bellwork 8/19 Do the Mixed Review on page 13 (2-16 ev).

Welcome Back Algebra 1-2 This presentation starts the 2nd Semester.

Bellwork~ Simplify 1.) 22 • 23 2.) 53 • 51 3.) (22)3 4.) (2xy)3

Graph 3x + y = 6 by making a “T” Table and graphing the line.

Bellwork~ Simplify 1.) 22 • 23 2.) 53 • 51 3.) (22)3 4.) (2xy)3

Bellwork 8/18 Do even on page 7.

Find a if: a2 + b2 = c2 1.) c=10, b= 8 2.) c=20,b=16 3.) a2+152=172

Bellwork Find the slope and y -intercept 1.) y = 3x -2.

Problems of the Day 1.) 2) y = 18 3) All real Numbers 4) a = – 1

Bellwork 1.) How many different ways can 2 lines appear on a graph?

Tuesday’s Warm Up.

Lesson 6 Ratio’s and Proportions

Proportions Chapter 7 Section 7.2.

Presentation transcript:

Bellwork 4/5 Do the Integrated Review Page 567 (31-45 odd)

Today’s Objective To be able to solve a proportion and use a proportion to solve a problem.

Ratio A ratio is a comparison of one value to another. Like a is to b or a/b or 1/2. In other words a ratio is a FRACTION like 3/4.

Proportion A proportion is a comparison of one ratio to another ratio, like a/b = c/d. 3/4 = 6/8

Black is to White as Red is to _________. Proportional Black is to White as Red is to _________. Round is to Basketball as Oblong is to ________. Green Football

Proportional

Proportional

Properties of Proportions 1.) If a/b = c/d, then b/a = d/c 3/4 = 6/8, then 4/3 = 8/6 2.) If a/b = c/d, then ad = bc 3/4 = 6/8, then 3•8 = 4•6 or 24 = 24

4/y = 24/30 24y = 120 (cross multiply) 24y/24 = 120/24 y = 5 Solving a Proportion 4/y = 24/30 24y = 120 (cross multiply) 24y/24 = 120/24 y = 5

3/y = 5/8 5y = 24 (cross multiply) 5y/5 = 24/5 y = 24/5 Solving a Proportion 3/y = 5/8 5y = 24 (cross multiply) 5y/5 = 24/5 y = 24/5

x/(x + 4) = 2/x x2 = 2(x + 4) (x multiply) x2 = 2x + 8 x2 - 2x - 8 = 0 Solving a Proportion x/(x + 4) = 2/x x2 = 2(x + 4) (x multiply) x2 = 2x + 8 x2 - 2x - 8 = 0

x2 - 2x - 8 = 0 (x - 4)(x + 2) = 0 x - 4 = 0 & x + 2 = 0 Solving a Proportion x2 - 2x - 8 = 0 (x - 4)(x + 2) = 0 x - 4 = 0 & x + 2 = 0 x = 4 & x = -2

3/y = 12/28 12y = 84 (cross multiply) 12y/12 = 84/12 y = 7 Solving a Proportion Your Turn 3/y = 12/28 12y = 84 (cross multiply) 12y/12 = 84/12 y = 7

x(x + 7) = 10(x + 1) x2 + 7x = 10x + 10 x2 - 3x - 10 = 0 Solving a Proportion Your Turn x/(x + 1) = 10/(x + 7) x(x + 7) = 10(x + 1) x2 + 7x = 10x + 10 x2 - 3x - 10 = 0

x2 - 3x - 10 = 0 (x - 5)(x + 2) = 0 x - 5 = 0 & x + 2 = 0 Solving a Proportion x2 - 3x - 10 = 0 (x - 5)(x + 2) = 0 x - 5 = 0 & x + 2 = 0 x = 5 & x = -2

Classwork Do Worksheet 11.1(1-18) Homework page 565 (7-21)