Hey there! I'm happy to help!
Let's represent the total number of marbles with the variable t. We have the following information.
1/2t+1/6t+8=t (1/2 of total are red, 1/6 of total are blue, 8 are white, add them up to get total)
Now, we solve for t.
1/2t+1/6t+8=t
We combine like terms.
2/3t+8=t
We subtract t from both sides.
-1/3t+8=0
We subtract 8 from both sides.
-1/3t=-8
We divide both sides by -1/3.
t=24
Therefore, there ae 24 total marbles in the bag.
Have a wonderful day! :D
Answer:
138
Step-by-step explanation:
as 92÷4 = 23 and 23x6 = 148
Answer:
D
Step-by-step explanation:
SOLUTION
The object would hit the ground at the root of the equation, that is where h = 0
So we have

Solving the quadratic equation, we have

So we ignore -1 as time cannot be negative.
Hence the object hit the ground in 3 seconds