Question

Which equations are true when the value of x is 3?
Select all that apply.
A. 3x = 1
B. 3x = 33
D. x + 4 = 9
E. x + 7 = 10
C. 13x = 39
F.
X
–
1
= 2

Answer 1

Answer:

• C. 13x = 39
• E. x + 7 = 10
• F. x – 1 = 2

Step-by-step explanation:

Putting 3 into each of the equations in place of x, you get ...

  A. 3·3 = 1 . . . . false

  B. 3·3 = 33 . . . . false

  C. 13·3 = 39 . . . . TRUE

  D. 3 +4 = 9 . . . . false

  E. 3 +7 = 10 . . . . TRUE

  F. 3 -1 = 2 . . . . TRUE

Applicable choices are C, E, F.