Introduction to Scientific Notation

Question 1

Which sentences describe the relationship between an expression and an equation? Select all that apply.

Revolt · Accepted Answer

An equation contains an equal sign; an expression does not.; Both expressions and equations contain numbers and/or variables.

Question 2

x – 4 = 12.5 can be written in words as:

Revolt · Accepted Answer

A number decreased by 4 is the same as 12.5.

Question 3

Which are equations? Select all that apply.

Revolt · Accepted Answer

12 = three-fourths x; x – 4.8 = 9; x – 3.1x = 14.7 + 12

Question 4

The variable is . The coefficient is . The constants are . The equation is .

Revolt · Accepted Answer

Selection 1: x; Selection 2: 5; Selection 3: -3.2 and -14.7; Selection 4: 5x + (-3.2) = -14.7

Question 5

Explain how you determine each of the two expressions of the equation when the mathematical statement is given in words.

Revolt · Accepted Answer

Answer

Question 6

Which bar diagram represents the equation 2x + 3 = 11?

Revolt · Accepted Answer

Answer image: https://r11.core.learn.edgenuity.com//media.edgenuity.com/EVresources/3107-08-01-25-06-task/mc001-2.jpg

Question 7

Which statement is modeled by the bar diagram?

Revolt · Accepted Answer

A number plus eight is five times the number.

Question 8

What expression represents the amount of money Brittney has? What expression represents the amount of money that Brittney and Sun have together? What is the equation described in this problem?

Revolt · Accepted Answer

Selection 1: 2x; Selection 2: 2x + x; Selection 3: 2x + x = 60

Question 9

Write an equation to represent the scenario.

Revolt · Accepted Answer

23.75 + x = 25.65

Question 10

Select all that you included in your response.

Revolt · Accepted Answer

Two equal expressions.; The word “is.”

Introduction to Scientific Notation Answers

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