Inequalities are just like equations it's just that the sign flips anytime you multipliy or divide by a negative number
1.
First Add 7 to both sides
2.
First Subtract 12 From Both Sides
triangel b is a reflection of triangle a the x-axis triangle c
1.1x+1.2x-5.4=-10x
Move all terms to the left:
1.1x+1.2x-5.4-(-10x)=0
Add all the numbers together, and all the variables
2.3x-(-10x)-5.4=0
Get rid of parentheses
2.3x+10x-5.4=0
Add all the numbers together, and all the variables
12.3x-5.4=0
Move all terms containing x to the left, all other terms to the right
12.3x=5.4
x=5.4/12.3
x=3.8571428571429/8.7857142857143
Hope it helps!
Mass number = atomic number + number of neutrons
23 = 11 + n
n = 23 - 11 = 12
Therefore, thre are 12 neutron in the neucleus of a Sodium atom.
There are 1,760 yards in a mile.
