Answer:
126
Step-by-step explanation:
n! / (r! (n-r)!)
In this case n = 9 and r = 4
9!/ (4! * (9-4)!)
9!/ (4! * 5!)
= 126
9! = 9x8x7x6x5x4x3x2x1
Ok so…
The answer is: 15 more marbles
Because
18 divided by 2 is 9
15+9=24
Now Chris has 9
Kevin has 24
24-9=15
Hope this helps:)
<u><em>⬇ Hey, the answer is down below! :) ⬇</em></u>
<u><em>For y:</em></u> x = -3
For y it stays the same.
<u><em>For x:</em></u> y = 2
For x it stays the same too.
<u><em>For 1.):</em></u> 
Step-by-step explanation:
<u><em>For y there is no step-by-step explanation unfortunately.</em></u>
<u><em>For x there isn't a step-by-step explanation too unfortunately.</em></u>
<u><em>⬇ For 1.) there is a step-by-step explanation! ⬇</em></u>
For step 1 we should flip the equations.
6x + 8 = y
For step 2 we should add -8 to both sides.
6x + 8 + − 8 = y + −8
= 6x = y − 8
For step 3 we should divide both sides by 6.

= x = 
<u><em>In result we should have</em></u>
<u><em>as the answer!</em></u>
17/50 is 34% as a fraction!
Answer:9/15
Step-by-step explanation:
You change 2/5 to 6/15 by multiplying each by 3 then adding it to 3/15 to get 9/15.