6.4 is Rational. It ends in a decimal
if the nine is the last number and it does not go on (indicated by ...) then the number is rational
-2 is rational. It's an integer. All integers are rational.

4 0

2 years ago

Delvig [45]

Answer:

Step-by-step explanation:

2x² + 5x = 12

2x² + 5x - 12 = 0

x² + 5x - 24 = 0

factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. the only pair that adds to 5 is 8 and 3

2x² - 3x + 8x - 12 = 0

split the equation and factor

2x² - 3x = 0 ||| 8x - 12 = 0

x(2x - 3) ||| 4(2x - 3)

therefore the pair is (2x - 3)(x + 4)

2x - 3 = 0

2x = 3

x = 3/2

x + 4 = 0

x = -4

3 0

2 years ago

OLEGan [10]

Answer:

i think its c but im not sure !!!

Step-by-step explanation:

6 0

3 years ago