We are given that there are:
Black helmets = 3
Red helments = 2
Let us start from the guy at the back. The guy at the back
can see the two helmets in front of him. If the two helmets in front of him are
red, then he can certainly say that his helmet is black since there are only 2
red helmets. Since that is not the case, then therefore he can either be black
or red. Therefore this also means that at least 1 of the 2 guys in front of him
has black helmet.
<span>Since the remaining two should have at least 1 black,
therefore the middle guy can see that the helmet in front of him is not red (so
1st guy is black). Because if the guy in front of him is red, then
he can know that he must be black since remember, at least one of the 2 front
guys must be black, but the middle guy cannot say that. Therefore the 1st
guy knows he has a black helmet.</span>
Answer:
x = 1
Step-by-step explanation:
To find the solution to the equation given, we will follow the steps below:
2(3x-6)= -12+6
Open the bracket
6x - 12 = -12 + 6
6x - 12 =-6
Add 12 to both-side of the equation
6x -12 + 12 = -6 + 12
6x =6
Divide both-side of the equation by 6
6x/6 = 6/6
At the left-hand side of the equation, 6 will cancel-out 6 while at the right-hand side of the equation, 6 will be divided by 6
x = 1
Answer:
15 divided by 5 =3
3 +6=9
9 - 5 = 4
so 4 is the answer
Step-by-step explanation:
Answer:
The ratios is 10:12 and if you were to write it in a fraction you get 10/12 which is simplified as 5/6
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
it goes from the 7th power to the 4th power. So add them together and you get 11
