Answer:
5:7 ration * 4 = 20 females and 28 males
Step-by-step explanation:
Ratiojn please use a calculator
You can solve this using a system of equations:
0.06x + 0.08y = 2060 (interest)
x + y = 29,000 (money invested)
Multiply each term in the second equation by -0.06 to cancel out the 0.06x from the first equation.
-0.06x - 0.06y = -1740
Now add this equation to the first equation and solve for y.
0.06x + 0.08y = 2060
-0.06x - 0.06y = -1740
0.02y = 320
y = 16,000
Since you know y = 16,000 you can substitute it into either of the original equations to solve for x. I picked the second equation because it's simpler, but you could also use the first.
x + 16,000 = 29,000
x = 13,000
So you invested 16,000 at 8% and 13,000 at 6%.
Answer:
Step-by-step explanation:
Given
per square yard
Required
Determine the cost of carpet and installation
First, calculate the area of the carpet
Convert to square yard
The cost is then calculated as:
Answer: ![y=\sqrt[]{\frac{x+4}{2} }](https://tex.z-dn.net/?f=y%3D%5Csqrt%5B%5D%7B%5Cfrac%7Bx%2B4%7D%7B2%7D%20%7D)
Step-by-step explanation:
![y=2x^2-4\\x=2y^2-4\\x+4=2y^2\\\frac{x+4}{2}=y^2\\ y=\sqrt[]{\frac{x+4}{2} }](https://tex.z-dn.net/?f=y%3D2x%5E2-4%5C%5Cx%3D2y%5E2-4%5C%5Cx%2B4%3D2y%5E2%5C%5C%5Cfrac%7Bx%2B4%7D%7B2%7D%3Dy%5E2%5C%5C%20y%3D%5Csqrt%5B%5D%7B%5Cfrac%7Bx%2B4%7D%7B2%7D%20%7D)
