Answer:
9 cupcakes and 64$
Step-by-step explanation:
try the math
Current area is 5ft * 10ft = 50ft^2.
Increasing by x, you have:
![(5 + x)*(10 + x) \geq 126 \\\\ 50 + 5x + 10x + x^2 \geq 126 \\\\ x^2 + 15x - 76 \geq 0 \\\\ x \geq 4, x \geq -19](https://tex.z-dn.net/?f=%285%20%2B%20x%29%2A%2810%20%2B%20x%29%20%20%5Cgeq%20%20126%20%5C%5C%5C%5C%2050%20%2B%205x%20%2B%2010x%20%2B%20x%5E2%20%20%5Cgeq%20%20126%20%5C%5C%5C%5C%20x%5E2%20%2B%2015x%20-%2076%20%20%5Cgeq%20%200%20%5C%5C%5C%5C%20x%20%20%5Cgeq%20%204%2C%20x%20%20%5Cgeq%20%20-19)
Since length must be positive,
The interest rate adds a percentage of money not already spent to pay towards the credit cards if not paid in full each month.
Answer:
Step-by-step explanation: 1/2x=16
16x4=64, Although this is not exactly 55 cookies, you can either make more or less. So you need 4 salt, to make 55.
To solve a multi-variable problem, you need to isolate single variables. To do this, there are two ways to do it. One way you eliminate one of the variables and the other you substitute.
In this example, you are being asked to eliminate one of the variables. To do this, you multiply 2x+2y= 12 by 2 and get 4x+4y = 24.
See how now both equations contain a 4y?
Using this you can subtract one equation from the other.
5x+4y=28
- 4x+4y=24
And then you get x=4
To get the other variable, you substitute 4 in for x (in one of the equations) and then solve for y.
2(4) + 2y =12
8+2y= 12
2y=4
y=2
Therefore, x = 4 and y = 2