Writing Equations to Find Unknowns

Question 1

Seventeen is eight more than a number.Which statements are true? Check all that apply.

Revolt · Accepted Answer

This is an equation because it is written as a complete sentence.; This is an equation because two expressions are set equal to each other.; The operation is addition.; The word “is” means equals.; The constants are 17 and 8.

Question 2

The correct equation is ✔ 8 = n ÷ 58 = 5 ÷ nn = 8 ÷ 55 = n ÷ 8.

Revolt · Accepted Answer

✔ 8 = n ÷ 5

Question 3

add 6 and 8divide 6 by 8✔ multiply 6 by 8subtract 6 from 8

Revolt · Accepted Answer

✔ multiply 6 by 8

Question 4

is✔ is not

Revolt · Accepted Answer

✔ is not

Question 5

Check all the equations.

Revolt · Accepted Answer

8 = j – 4; Twelve is the sum of a number and six.; 5x = 45

Question 6

To model the problem containing an unknown number, translate the statement into an equation.Sixteen is five less than a number. Which steps would you take to translate the statement?

Revolt · Accepted Answer

Replace “is” with =, “less than” with –, and “a number” with n to get 16 = n – 5.

Question 7

Question 7

Revolt · Accepted Answer

First, Amelia must substitute 8 for the using .: variable; First, Amelia must substitute 8 for the using .: parentheses; To simplify, Amelia must .: multiply 6 by 8; 8 a solution of the equation.: is not

Question 8

This statement represents an addition problem✔ a division problema multiplication problema subtraction problem.

Revolt · Accepted Answer

✔ a division problem; .: a division problem; .: 8 = n ÷ 5

Question 9

Question 9

Revolt · Accepted Answer

"15"; 3

Question 10

constantoperationparentheses✔ variable

Revolt · Accepted Answer

✔ variable; First, Amelia must substitute 8 for the using .: variable; First, Amelia must substitute 8 for the using .: parentheses; To simplify, Amelia must .: multiply 6 by 8; 8 a solution of the equation.: is not

Writing Equations to Find Unknowns Answers

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