Slot method
20 options
3 slots
First slot: 20 options
Second slot: 19 options (one used up for 1st slot)
Third slot: 18 (one less than last)
Multiply them
20 times 19 times 18=6840
Answer is 6840 ways
Answer:-282
Step-by-step explanation:
I hope this helps :)
Answer: 18 tablespoons
Explanation: for the water, you have to multiply the 2 gallons by 3 if you want to get 6 gallons. then, you also multiply 6 tablespoons by 3 to get 18 tablespoons. you can see the ratio 2:6 is the same as the ratio 6:18, so you know it’s correct!
X^2 + 3x - 18
2 numbers that multiplied give you -18
Those same 2 numbers have to add up to 3
6 x -3 = -18
6 + -3 = 3
(X + 6) (x - 3)
