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02-06-2021
Mathematics

contestada

Select all the equations that are true when x = 4
A. 8x = 2
B. 19 + x = 23
C. 40/x = 5
D. -3x = 12
E. x - x - x - x= -8

Respuesta :

02-06-2021

Answer:

B and E

Step-by-step explanation:

A. 8x = 2

8(4) = 2

32 = 2

B. 19 + x = 23

19 + 4 = 23

23 = 23

C. 40/x = 5

40/4 = 5

10 = 5

D. -3x = 12

-3(4) = 12

-12 = 12

E. x - x - x - x = -8

4 - 4 - 4 - 4 = -8

0 - 4 - 4 = -8

-4 - 4 = -8

-4 + (-4) = -8

-8 = -8

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