Answer:

Step-by-step explanation:
Given
- 
The LCM of 4 and 5 is 20
= 
= 
Answer:
<u>It</u><u> </u><u>is</u><u> </u><u>1</u><u>7</u><u>1</u>
Step-by-step explanation:

substitute for x and y:

Perimeter of a triangle =sum of all sides
=2x-7+5x-3+2x-2
=2x+5x+2x-7-3-2
=9x-12
The correct answer is C and E
Explain
A. 8x+4x=0
Now simply it
12x = 0
Now divide by 12 on both both side
X= 0
So this equation has the solution x= 0
B. 6x+2 = 4x+2+2x
Now both sides
6x+2=6x+2
Now simply by 6x+2 both sides
X= 0
So this equation has infinity solution
C. 4x-8x-3=6-4x
Now simply both sides
-4x-3=6-4x
Now simply
-3x=6
This equation have no solution
D. 5x+1 =1-5x
Now add 5x-1 on both sides
10=0
Now divide by 10
X= 0
This equation have solution x= 0
E. 12x-3-5x = 9+7x-6
Now simply both sides
7x-3= 7x+3
And subtract 7x from both sides
-3 = 3
So the equation has no solution
I hope this help you :D
Good luck
Answer:

Step-by-step explanation:
The angles in a triangle add to 180 degrees.
We are given triangle EFG. There are 3 angles: m∡E = 5x+6, m∡F = 4x-6, and m∡G = 5x-2.
The sum of these three angles must equal 180. Set up an equation and solve for x.

Combine like terms on the left side.


Solve for x. 2 is being subtracted from 14x. The inverse operation of subtraction is addition. Add 2 to both sides.

x is being multiplied by 14. The inverse operation of multiplication is division. Divide both sides by 14.



Find the measure of angle G. Substitute x into the original expression.


The measure of angle G is 63 degrees.