I dont know but i think either B or A
Answer:10
Step-by-step explanation:
Answer:
x=19
Step-by-step explanation:
subtract 12 from each side: 50-12=2x+12-12
38=2x
divide by 2
38/2=2x/2
19=x
Answer:
No
Step-by-step explanation:
(-5 + x)( x + 4)= -5*(x+4) +x*(x +4 )
= -5x -20 +x² + 4x
= -5x + 4x + x² -20 = -x + x² -20
= x² - x - 20
(5 + x) (x -4) = 5*(x-4) + x (x-4)
= 5x - 20 + x² - 4x
= 5x - 4x +x² -20 = x + x² - 20
= x² + x - 20
The solution to your problem about the probability <span>of getting first a red and then a black marble is as follows:
</span><span>(3 red / 8 total) * (2 black / 7 total) = 3/28
</span>
Therefore, the probability of getting first a red and then a black marble is 3/28.
:)