Hello,
just add the two equations and make it equal to 180 and solve..
here, 15x + 4 + 10x + 1 = 180
now combine 15x and 10x to get 25x and 4and 1 to get 5
now we have 25x + 5 = 180
subtract 5 from 180 to get 175
then divide by 25 to get 7
X = 7
hope it helped.
Answer:
x > -8
Step-by-step explanation:
Divide each term by -2
x - 1 > -9
Move all terms not containing x to the right
x > - 8
Results
<u>Inequality form = x > - 8</u>
Answer:
![x=0,y=2](https://tex.z-dn.net/?f=x%3D0%2Cy%3D2)
Step-by-step explanation:
Given equation:
Equation:1
Equation:2
Multiplying equation:2 by 2 gives:
Equation:3
Subtracting Equation:3 from Equation:1
![2x + 4y-(2x-6y) = 8-(-12)](https://tex.z-dn.net/?f=2x%20%2B%204y-%282x-6y%29%20%3D%208-%28-12%29)
The negative sign outside the bracket changes the sign inside it after opening the bracket
![2x+4y-2x+6y=8+12](https://tex.z-dn.net/?f=2x%2B4y-2x%2B6y%3D8%2B12)
![10y=20\\\\y=2](https://tex.z-dn.net/?f=10y%3D20%5C%5C%5C%5Cy%3D2)
Putting the value of 'y' in Equation:2
![x-3y=-6\\x-3(2)=-6\\x-6=-6\\x=-6+6\\x=0](https://tex.z-dn.net/?f=x-3y%3D-6%5C%5Cx-3%282%29%3D-6%5C%5Cx-6%3D-6%5C%5Cx%3D-6%2B6%5C%5Cx%3D0)
![x=0,y=2](https://tex.z-dn.net/?f=x%3D0%2Cy%3D2)
Answer:
The answer is A because the base has to be positive.
Step-by-step explanation: