Learning Materials
Features
Discover
Chapter 2: Q6. (page 62)
Write a variable expression to represent the phrase.
7 more than a number
7 more than a number is x + 7 (where the number is x)
Over 30 million students worldwide already upgrade their learning with 91影视!
All the tools & learning materials you need for study success - in one app.
Get started for free
Challenge The problem below is a variation of one that appears in the ancient Chinese text Nine Chapters on the Mathematical Art. (In the problem, a tou is a Chinese unit of measure.)
A goat, a horse, and a cow mistakenly enter a farmer鈥檚 wheat field and eat some stalks of wheat. The horse eats twice as many stalks as the goat, and the cow eats twice as many stalks as the horse. The farmer demands 5 tou of wheat from the owners of the animals to replace what was eaten. How much wheat should be replaced by the goat鈥檚 owner? by the horse鈥檚 owner? by the cow鈥檚 owner?
a. Let x be the amount of wheat (in tou) that should be replaced by the goat鈥檚 owner. What is an expression in terms of x for the amount that should be replaced by the horse鈥檚 owner? by the cow鈥檚 owner?
b. Write and solve an equation to find x. To the nearest tenth of a tou, how much wheat should be replaced by each animal鈥檚 owner?
Explain how the commutative and associative properties of multiplication can help you evaluate the product mentally
You and a friend go to the movies. You each buy a ticket for \(9.00 and a popcorn-and-drink combo for \)5.25. Describe two methods you can use to find the total amount of money you and your friend spend. What is the total amount spent?
Perform the indicated operation.
What is the coefficient of y in the expression
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine