There will be one solution. To solve that:
1. Get the y alone by switching the places.
6x+y=2 > y=2-6x
-18x+3y=12 > 3y=12-18x > Then divide 3 on each number > y=4-6x
After doing that, you can solve this in graphing or algebra way.
Ima do the algebra way:
SO we have 2 system of equations. Now pick one equestion.
I will pick, y=2-6x. Now Ima replace the Y with the other equation y=4-6x >
4-6x=2-6x.
Now solve. And get > 0 aka Infinite Solution.
Answer:
4 hours
Step-by-step explanation:
120 ÷ 30 = 4
Hope this helps. Pls give brainliest.
Answer:
, solution is $14.29
Step-by-step explanation:
We can create an equation for this scenario to try and solve it.
Assuming the cost of the CD is x, it’s sale tax will be 0.05x (as that is 5% of x, 0.05.)
We can write the equation in two ways:
or
.
Assuming we take the second one (easier to work with), we can divide both sides by 1.05. The equation simplifies to x = 14.289... which rounds to x = 14.29.
Therefore, the equation is
and the solution is $14.29.
Hope this helped!
The length is 15 inches and width is 9 inches
Step-by-step explanation:
Let
l be the length
and
w be the width
w = l-6
The area of rectangle is 135 ft^2
The formula for area is:
![Area=l*w\\135=l*(l-6)\\135=l^2-6l\\l^2-6l-135=0\\l^2+9l-15l-135=0\\l(l+9)-15(l+9)=0\\(l+9)(l-15)=0\\l+9 = 0 => l=-9\\l-15 = 0 => l=15\\](https://tex.z-dn.net/?f=Area%3Dl%2Aw%5C%5C135%3Dl%2A%28l-6%29%5C%5C135%3Dl%5E2-6l%5C%5Cl%5E2-6l-135%3D0%5C%5Cl%5E2%2B9l-15l-135%3D0%5C%5Cl%28l%2B9%29-15%28l%2B9%29%3D0%5C%5C%28l%2B9%29%28l-15%29%3D0%5C%5Cl%2B9%20%3D%200%20%3D%3E%20l%3D-9%5C%5Cl-15%20%3D%200%20%3D%3E%20l%3D15%5C%5C)
As the length cannot be negative, so we will use the value of length 15
If length 15,
w=l-6
w=15-6
w=9
So,
The length is 15 inches and width is 9 inches
Keywords: Area of rectangle, Quadratic equation
Learn more about quadratic equation at:
#LearnwithBrainly
Well you can use distributive property and break it up