30s-18 is the answer jus add all the sides together/ add the like terms then solve it
Answer:
draw the diagram and multiply 5x20
Percent relative error is calculated by the formula: (experimental value - literature value/ experimental value) x 100%
Therefore, (6-7/7) x 100% = 14.3%
Your answer is in absolute value :)
180=2x+y
180-y=2x
(180-y)/2=x
