Answer:

Step-by-step explanation:
Let the two numbers be x and y
<u>Condition # 1:</u>
<h2>x + y = 24 ---------------------(1)</h2>
<u>Condition # 2:</u>
<h2>x = 2y - 6 ----------------------(2)</h2>
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Putting Equation # 2 in Equation # 1
2y - 6 + y = 24
3y - 6 = 24
Adding 6 to both sides
3y = 24 + 6
3y = 30
Dividing both sides by 3
y = 10
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Putting y = 10 in Equation # 2
x = 2y - 6
x = 2(10) - 6
x = 20 - 6
x = 14
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Answer:
-12-9--7= -14
Step-by-step explanation:
1 -12-9--7=
2 -21--7= (minus negative equals plus)
3 -21+7=14
Answer:

Step-by-step explanation:
The equation is already set equal to zero, so that is a good start
We then need to get x by itself. To do so we need to subtract 12 from both sides to get x² = -12
Then we need to take the square root of both sides
which gives us 
Answer:The answer is C
Step-by-step explanation:
When you plug it in 7*2 is 14+ 5*3 is 15 you add 14+15 you get 29 and then for the other equation you do 12-5 which gives you the x value of 7. Hope this helps.
Answer: $1,637.5
Step-by-step explanation:You would convert the percentage to a decimal of .25, then multiply that by the buying price.