Math Practice 101
Homework Explained - Math Practice 101

Dear guest, you are not a registered member. As a guest, you only have read-only access to our books, tests and other practice materials.

As a registered member you can:

Registration is free and doesn't require any type of payment information. Click here to Register.
Go to page:  

Grade 8 HMH Go Math - Answer Keys
Chapter 7: Solving Linear Equations; Lesson 3:Equations with the Distributive Property


Please share this page with your friends on FaceBook
  • Question 17 (request help)

    Represent Real-World Problems

    A chemist mixed x milliliters of 25% acid solution with some 15% acid solution to produce 100 milliliters of a 19% acid solution. Use this information to fill in the missing information in the table and answer the questions that follow.

    a. What is the relationship between the milliliters of acid in the 25% solution, the milliliters of acid in the 15% solution, and the milliliters of acid in the mixture?
  • Type below:
  • Question 17 (request help)

    b. What equation can you use to solve for x based on your answer to part a?
  • Type below:
  • Question 17 (request help)

    c. How many milliliters of the 25% solution and the 15% solution did the chemist use in the mixture?
  • Type below:

  H.O.T.  

  Focus on Higher Order Thinking  

  • Question 18 (request help)

    Explain the Error

    Anne solved \(5(2\text{x}) - 3 = 20\text{x} + 15\) for x by first distributing 5 on the left side of the equation. She got the answer x = -3. However, when she substituted -3 into the original equation for x, she saw that her answer was wrong. What did Anne do wrong, and what is the correct answer?
  • \(\text{x}=\)   
  • Question 19 (request help)

    Communicate Mathematical Ideas

    Explain a procedure that can be used to solve \(5[3(\text{x} + 4) - 2(1 - \text{x})] - \text{x} - 15 = 14\text{x} + 45\). Then solve the equation.
  • \(\text{x}=\)   

Yes, email page to my online tutor. (if you didn't add a tutor yet, you can add one here)