I would say the 1st and 5th as well :)
<span>3ab-9ab+7ab = ab
</span><span>A-
2(5x-3)=24
10x - 6 = 24
10x = 30
x = 3
</span><span>B-
5(2x+1)=50
</span>10x + 5 = 50
10x = 45
x = 4.5
Hello!
Each time, there will be a 1/2 chance of tossing a head. Therefore, we multiply our two probabilities.
1/2(1/2)=1/4
Therefore, we have a 1/4 or 25% chance of tossing two heads in a row.
I hope this helps!
X will be less than 18 or X<18