Mr. Morgan's Math Help
Welcome to mr. morgan's math help website.
Below are links to different textbook series, grade level curriculum and the resources that have been put together to help you be successful in math this year!
Illustrative Mathematics (6-8 OUR Mathematics)
6th Grade Resources
U1 , U2 , U3 , U4 , U5 , U6 , U7 , U8
7th Grade Resources
8th Grade Resources
Preparation for High School Algebra or Integrated Math 1
University High School Summer Bridge Course
High School Illustrative M athematics - McGra w Hill, Kendall Hunt, Imagine Learning, Learn Zillion)
Algebra 1 Resources
U1 , U2, U3, U4, U5, U6, U7
OPEN UP RESOURCES Mathematics - OUR
OUR - Algebra 1 Resources
U1 , U2 , U3, U4, U5, U6, U7, U8, U9
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Home > CCA > Chapter 7 > Lesson 7.1.2 > Problem 7-27
Write an equation or system of equations to solve this problem.
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Master Math with Morgan: Homework Help for Math 7
Updated on Dec 06,2023
Table of Contents
- Introduction
Understanding Circumference
Exploring diameter and circumference, measuring circumference and diameter, proportional relationship between diameter and circumference, using constant proportionality to estimate circumference, homework and practice problems.
- Identifying Inaccurate Measurements
- Using Approximate Values of Pi
The Equation and Proportional Relationship
In this lesson, we will be exploring the concept of circumference and how it relates to circular objects. We will start by understanding what circumference actually represents - the distance around a circular object. To measure the circumference of an object, we typically use a piece of STRING or a measuring tape to wrap around the object and then measure the length of that string. However, measuring the circumference directly can be quite challenging due to the circular Shape of the object.
To better understand the relationship between circumference and other measurements of a circle, such as diameter or radius, we will be conducting measurements and calculations. By analyzing the measurements of different objects and plotting them on a coordinate plane, we can identify Patterns and establish a proportional relationship between the diameter and circumference.
To begin our exploration, we will measure the diameter and circumference of several circular objects. By recording these measurements in a table, we can analyze the relationship between the two.
For example, I measured the diameter of my coffee mug and found it to be 9.9 centimeters. Using a string, I measured the circumference of the mug to be approximately 32 centimeters. Similarly, I measured the diameter of a quarter to be 2.3 centimeters and its circumference to be around 7.2 centimeters. Finally, I measured the diameter of a megaphone to be 19.5 centimeters, with a corresponding circumference of approximately 60 centimeters.
In activity number two, we will be practicing the measurement of circumference and diameter using various objects. Your teacher will provide you with objects such as a mug, a quarter, or even a megaphone for you to measure. Using a string or a measuring tape, wrap it around the object to measure the circumference, and use a ruler to measure the diameter. By recording these measurements in a table, we can further analyze their relationship and observe any patterns that may emerge.
For instance, I measured the circumference of a mug to be approximately 32 centimeters, while its diameter was 9.9 centimeters. The quarter, on the other HAND , had a circumference of around 7.2 centimeters and a diameter of 2.3 centimeters. Lastly, I measured the circumference of a megaphone to be about 60 centimeters, with a diameter of 19.5 centimeters.
Upon analyzing the measurements and plotting them on a coordinate plane, I noticed a proportional relationship between the diameter and circumference of these objects. Although not perfect, the data points appear to be relatively close to a straight line. This indicates that as the diameter increases, the circumference also increases, suggesting a proportional relationship between the two.
When we analyze the values, we find that the ratios of circumference to diameter are consistent. For example, the mug has a ratio of approximately 3.09 (32/9.9), the quarter has a ratio of around 3.13 (7.2/2.3), and the megaphone has a ratio of about 3.07 (60/19.5). These ratios are all quite close, indicating a proportional relationship.
Based on the consistent ratios we observed, we can establish a constant proportionality to estimate the circumference of a circle based on its diameter. We will refer to this constant proportionality as "k." In our case, the value of "k" is approximately 3.1, derived from the ratios we calculated earlier.
Now, let's consider another circular object with a diameter that is half as long as the diameter of our largest circle. If the largest circle has a diameter of 20, then its circumference is 60. Therefore, if the diameter is halved to 10, the new circumference will also be halved to 30. This demonstrates the proportional relationship between diameter and circumference, where halving the diameter results in halving the circumference.
For the homework assignment, Diego measured the diameter and circumference of several circular objects and recorded his measurements in a table. However, one of his measurements is inaccurate. By analyzing the values and the relationships between diameter and circumference, we can identify the inaccurate measurement.
Upon examination, we find that the measurement for the flying disc seems to be off. While the other values Align closely with the proportional relationship between diameter and circumference, the flying disc measurement deviates significantly. This suggests that the measurement for the flying disc is inaccurate.
Moreover, the homework also includes a task to complete a table using the constant proportionality of pi, represented by 3.14 or 22/7. By multiplying or dividing using the given measurements, we can estimate the missing values for the circumference or diameter. This allows us to Apply the constant proportionality of pi and demonstrate its usage in real-world calculations.
To further Delve into the subject, we will explore the equation y = 1.5x + 2. This equation represents a linear relationship between two variables, where y is dependent on x. By finding four pairs of x and y values that satisfy the equation, we can plot these points on a coordinate plane.
For instance, when x is 0, y equals 2 (0 × 1.5 + 2 = 2). When x is 1, y is 3.5 (1 × 1.5 + 2 = 3.5). Similarly, for x values of 2 and 3, the corresponding y values are 5 and 6.5, respectively. Plotting these points on the coordinate plane, we observe a linear relationship between the two variables.
However, it is essential to note that although the equation represents a linear relationship, it doesn't satisfy the requirements for a proportional relationship. A proportional relationship must pass through the origin, but in this case, the equation is shifted upward by 2 units. Thus, it is not a direct proportional relationship.
In conclusion, understanding the concept of circumference and its relationship with diameter is crucial in geometry and real-world applications. By measuring and analyzing different circular objects, we can observe patterns and establish proportional relationships. The constant proportionality, pi, plays a significant role in these relationships and allows us to estimate the circumference or diameter of circles.
The above is a brief introduction to Master Math with Morgan: Homework Help for Math 7
Let's move on to the first section of Master Math with Morgan: Homework Help for Math 7
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Illustrative Mathematics Grade 7 Open Up Resources OURUnit 2 Lesson 2More resources available at: mathhelp.cusd.com
Welcome to Mr. Morgan's Math Help Website! Below are links to different textbook series, grade level curriculum and the resources that have been put together to help you be successful in math this year! Illustrative Mathematics (6-8 OUR Mathematics) 6th Grade Resources. U1, U2, U3, U4, U5, U6, U7, U8. 7th Grade Resources.
Illustrative Mathematics Grade 7 Open Up Resources OURUnit 2 Lesson 1More resources available at: mathhelp.cusd.com
Illustrative Mathematics Grade 7 Open Up Resources OURUnit 3 Lesson 2More resources available at: mathhelp.cusd.com
Homework Help. 1 - One of These Things is Not Like the Others. Lesson 1 : 7.2.1 Morgan. 2 - Introducing Proportional Relationships with Tables. Lesson 2 : Proportional Relationships : 7.2.2 Morgan. 3 - More about Constant of Proportionality. Lesson 3. Constant of Proportionality from Tables. Constant of Proportionality from Tables : 7.2.3 ...
Math 7 Unit 6 - Illustrative Mathematics Online Resources . Grade 7 Illustrative Mathematics - Unit 6: Expressions, Equations, and Inequalities ... Khan Academy Online Practice. Class Notes. Homework Help. Lesson 1 - Relationships between Quantities. Lesson 1 . 7.6.1 Morgan . 7 6 1 CUSD HW. Lesson 2 - Reasoning about Contexts with Tape ...
7.2.2 Slope Homework Name _____ Period _____ Work through each of the problems below to practice the concepts from today's lesson and review concepts ... Equal, 1/2 7-50. Lydia drew a graph of four athletes in the final part of the triathlon, the 10 km run. She found the slope of each runner's line. Her results are listed below.
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CPM Education Program proudly works to offer more and better math education to more students.
On one of the papers, draw a small half-circle in the middle of one side. Cut a straight line, starting from the center of the half-circle, all the way across the paper to make 2 separate pieces. (Your cut does not need to be perpendicular to the side of the paper.) On each of these two pieces, measure the angle that is marked by part of a circle.
Free math problem solver answers your algebra homework questions with step-by-step explanations.
Study with Quizlet and memorize flashcards containing terms like 9, -2, 12x +10 and more.
Crack the Math Teacher Job Interview with these Winning Answers! Mastering Mathematics: Achieving 100% in Exams Master 7th Grade Math Homework with Morgan's Help! Master the Art of Writing Persuasive Essays Learn to Balance Redox Reactions with Half Reaction Method
A toonie is a Canadian coin worth 2 dollars, and we can determine the number of quarters equivalent to a specific number of toonies. For example, to find the number of quarters equivalent to 16 toonies, we can use the equation: Quarters = 16 × (1/8) = 2.
Module 2 Lessons 1-23 Eureka Math™ Homework Helper 2015-2016. 2015-16 Lesson 1 : Opposite Quantities Combine to Make Zero 7•2 G7-M2-Lesson 1: Opposite Quantities Combine to Make Zero Positions on the Number Line 1. Refer to the integer game when answering the following questions. ... I can use 𝐾𝐾 to help me when adding the other ...
QuickMath will automatically answer the most common problems in algebra, equations and calculus faced by high-school and college students. The algebra section allows you to expand, factor or simplify virtually any expression you choose. It also has commands for splitting fractions into partial fractions, combining several fractions into one and ...
Crack the Math Teacher Job Interview with these Winning Answers! Mastering Mathematics: Achieving 100% in Exams Master 7th Grade Math Homework with Morgan's Help! Master the Art of Writing Persuasive Essays Learn to Balance Redox Reactions with Half Reaction Method
CPM Education Program proudly works to offer more and better math education to more students.
Bringing more math to more students. Home > CCA > Chapter 7 > Lesson 7.1.2 > Problem 7-27. ... Hint: Create two separate equations, one demonstrating the amount of money Morgan gains and the other demonstrating the amount of money Kendall uses. Set the equations equal to each other and solve for . More Help: Let the of weeks. Solve for . Answer:
For instance, when x is 0, y equals 2 (0 × 1.5 + 2 = 2). When x is 1, y is 3.5 (1 × 1.5 + 2 = 3.5). Similarly, for x values of 2 and 3, the corresponding y values are 5 and 6.5, respectively. Plotting these points on the coordinate plane, we observe a linear relationship between the two variables.
Morgan is paid $ 2, 9 3 7. 7 5 per week. What is the amount of federal income tax withheld from Morgan's paycheck under the following conditions? Assume that Morgan has only one job or that step 2 of Form W-4 is not checked. Also, her employer uses the Percentage Method Tables for Automated Systems.
The Math Calculator will evaluate your problem down to a final solution. You can also add, subtraction, multiply, and divide and complete any arithmetic you need. Step 2: Click the blue arrow to submit and see your result! Math Calculator from Mathway will evaluate various math problems from basic arithmetic to advanced trigonometric expressions.
Question: Written HW 2 (Logic 2.5-2.7) You must show all work to receive any credit. Practice examples in these sections before attempting these problems. 1) Create a truth table and check whether the statement is a tautology or contradiction (pv-) (19) | 2) Show that (pvq) = - (wpaw) by using one of De Morgan's Laws and the property that ~ (-a ...