2x - 3y = 12
x + y = 9
x + y = 9
Subtract 'x' to both sides:
y = -x + 9
Plug in -x + 9 for 'y' in the first equation
2x - 3(-x + 9) = 12
Distribute -3:
2x + 3x - 27 = 12
Combine like terms:
5x - 27 = 12
Add 27 to both sides:
5x = 39
Divide 5 to both sides:
x = 7.8
Plug this into any of the two equations to find 'y':
x + y = 9
7.8 + y = 9
Subtract 7.8 to both sides:
y = 1.2
So the solution is (7.8, 1.2).
Answer: 22
Step-by-step explanation:
Evaluate g + 3h - 6 when g = 10 and h = 6.
Substitute the values of g and h into the expression :
10 + 3(6) -6.......open the bracket
= 10 + 18 - 6
=28 - 6
= 22
:
Answer:
3:45 PM
Step-by-step explanation:
The least common multiple of 3, 5, and 6 is 30, so the next occurrence will be 30 minutes after 3:15 PM, at 3:45 PM.
Subtract to find the amount of the discount:
80.00 - 60.00 = 20.00
Divide the amount of discount by original price:
20.00 / 80.00 = 0.25
Multiply by 100 to get percent:
0.25 x 100 = 25%
Answer: 25%
Answer:
If you are trying to find Delia's age it's 14
Explanation:
We need to solve x * 2 = 24
x = 14 because 14 * 2 = 24
