Answer:
120 minutes.
Step-by-step explanation: it says before it only has 10 gallons left. Subtract to get 90 gallons before solving. 90/0.75=120. It will take her 120 minutes to have 10 gallons left after draining 90 gallons.
Hi there. :)
I'll try to make this simpler for you.
Let's focus on the equation from left to right, to avoid clutter.
-4(3 * 1/2) = -4(1.5)
Now to the right.
+ 2(3) = + 6
Now combine!
-4(1.5) + 6 =
-6 + 6 = 0
The answer is 0.
-8x+2=-7x+10
-x+2=10
-x=8
x=-8
12 tables seat 4 people = 48 seats
28 tables seat 2 people= 56
therefore there are 104 seats
Answer: 34,560
Step-by-step explanation:
Total crayons of different color = 12
Total children = 3
Each child will get 4 crayons.
Number of combinations of selecting <em>r</em> things out of <em>n</em> things = 
The number of ways of selecting the first 4 crayons for first child = 
Colors left = 12-4 =8
Now, the again selecting 4 colors out of 8 for second child = 
Colors left =4
Number of ways of selecting 4 colors out of 4 for third child =1
Total number of ways = 495 x 70 x 1 = 34650 [By fundamental principle of counting]
Hence, the total number of ways = 34,560.