31. If x = 5, which number sentence is true? OA) 2x <7
B) 2x = 7
OC) 2:x=7
D) 2x > 7

D

Step-by-step explanation:

D. 2(5) > 7

    10 > 7

it is x=-4

step-by-step explanation:

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )