Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys
Chapter 2 - Equations in One Variable; Lesson 3: Write Two-Step Equations


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  • Question 9 (request help)

    When diving, the peregrine falcon can reach speeds of up to 175 miles per hour. Write and solve equations to find each of the following.

    a. The top speed of a peregrine falcon is 20 miles per hour less than three times the top speed of a cheetah. What is the cheetah's top speed?
  •     mph
  • Question 9 (request help)

    b. A sailfish can swim up to 1 mile per hour less than one fifth the top speed of a peregrine falcon. Find the top speed that a sailfish can swim.
  •     mph
  • Question 9 (request help)

    c. The peregrine falcon can reach speeds about 13 miles per hour more than 6 times the speed of the fastest human. What is the approximate top speed of the fastest human?
  •     mph

  H.O.T. Problems Higher Order Thinking  

  • Question 10 (request help)

    Model with Mathematics If 12 less than 4 times a number is 8, the number is 5. Write a different sentence where the unknown number is also 5.
  • Type below:
  • Question 11 (request help)

    Persevere with Problems The ages of three siblings combined is 27. The oldest is twice the age of the youngest. The middle child is 3 years older than the youngest. Write and solve an equation to find the ages of each sibling.
  • Youngest :    
    Middle Child :    
    Oldest :    
  • Question 12 (request help)

    Model with Mathematics Write about a real-world situation that can be solved using a two-step equation. Then write the equation and solve the problem.
  • Type below:
  • Question 13 (request help)

    Model with Mathematics Describe two real-world situations that can be represented by the same two-step equation.

    Situation 1 :

    Situation 2: 
  • Type below:

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