Answer:
x = 2
Step-by-step explanation:
Add 2x from each side giving you
7x - 3 = 11
Add 3 to each side
7x = 14
Divide by 7
x = 2
It would be D………………………….,
Answer:
14 and 10
Step-by-step explanation:
14+10=24
14-10=4
Answer:
5040
Step-by-step explanation:
There are 7 options for the 1st song, 6 options for the 2nd song, 5 options for the 3rd song, 4 options for the 4th song, 3 options for the 5th song, 2 options for the 6th song, and 1 option for the 7th song. We get:

(<em>Note: when you have a number n, where it is multiplied by every number until one (ex. 7. 7*6*5*4*3*2*1), then the number in the result is n! (n factorial). So we get that 7*6*5*4*3*2*1 is 7! is 7 factorial. So 5040 is 7! </em>)
Answer:
40 barrels
Step-by-step explanation:
Given that:
Let x = number of minutes
Old conveyor line :
Filling rate = 3 barrels per minute
Already filled = 10 barrels
Equation :
10 + 3x - - - (1)
NEW conveyor line:
Filling rate = 4 barrels per minute
Equation :
4x - - - (2)
Equate equation (1) and (2)
10 + 3x = 4x
10 = 4x - 3x
10 = x
Hence, in 10 minutes, each line will have filmed same number of barrels which is
4x = 4*10 = 40 barrels
10 + 3x = 10 + 3(10) = 40 barrels