Answer:
10 minutes
Step-by-step explanation:
Let's use the variable x for the amount of coins.
The first machine can sort x coins in 15 minutes, so its speed is x/15 coins/minute.
The second machine can sort x coins in 30 minutes, so its speed is x/30 coins/minute.
If we sum the speeds, we have that the speed will be:
speed = (x/15) + (x/30) = (2x + x)/30 = 3x/30 = x/10
The total speed can sort x/10 coins per minute, that is x coins in 10 minutes.
Answer:
(x-5)^3
Step-by-step explanation:
(x-5)^3. (x−5)3 ( x - 5 ) 3
The answer is 2 and negative 9
Answer:2.21
Step-by-step explanation:I used a calculator
Answer:
-8x +6
Step-by-step explanation:
5x−2 from −3x+4 .
This means take the 2nd number and subtract the 1st
-3x +4
-( 5x -2)
----------------
Distribute the negative sign
-3x +4
- 5x +2
----------------
-8x +6
