Answer:
18 seconds
Step-by-step explanation:
8:10 = 4:5, 4+5 = 9, 9 x 2 = 18 seconds :D
First subtract 18 to -6
-6x=-24
Second divide -6 to -24
-6/-6=-24/-6
Finally x=4
4x-2y=8
x-3y=-3
Multiply equation 2 by 4;
4x-2y=8
4x-12y=-12
Subtracting equation II from equation I;
10y=20
y=2
Replacing the value of y in equation;
4x-2y=8
4x-2(2)=8
4x-4=8
4x=12
x=3
Answer:
30/552
Step-by-step explanation:
In order to solve this problem you need to multiply the probability of getting grape for the first gumball with the probability of getting grape for the second gumball. Since there are 6 grape gumballs and a total of 24 gumballs (6*4). Then the probability of getting grape for the firs one is

Now there are only 5 grape gumballs available and one less in the total supply, therefore the probability of getting grape in the second try is

Finally we multiply them together to find the probability of getting two grapes in a row.
= 
Answer:
18/60 and 5/60
Step-by-step explanation:
The lowest common multiple (LCM) of 10 and 12 is 60, using ladder method, factor tree or prime factorisation. Then,
3/10 = 6*3/6*10 = 18/60
1/12 = 5*1/5*12 = 5/60