arlene90 arlene90
  • 31-01-2021
  • Mathematics
contestada

Select all the equations that are true when x is -4.
-8 = 2x
-12 = x• -3
- 12 = x+x+x
x + 4 = -8
x2=-16

Respuesta :

nigi2911 nigi2911
  • 31-01-2021
-8=2(-4) is true
-12=-4(-3) is false
-12=-4-4-4 is true
-4+4=-8 is false
-4(2)=-16 is false

First and third equations are true when x is -4
Answer Link
Symplyroseline
Symplyroseline Symplyroseline
  • 31-01-2021

Answer:

-8=2x and -12=x+x+x

Step-by-step explanation:

When x is -4

1). 2(-4) = -8

2). -4.-3= 12

3). (-4)+(-4)+(-4)= -12

4). -4+4= 0

5). -4²= -16

  • For the last equation, if the -4² was in a bracket then the answer would be 16 because (-²) would give +
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