Answer:
#1. A. C. D.
#2. D. F.
3^4 equals 81 and so do answer D. & F.
180-50=130
x-y=130
x+y=50
2x=180
x=90
90+y=50
y=50-90
y=-40
<span>Hans accidentally multiplies incorrectly during his data analysis. hans has committed HUMAN ERROR. This type of error occurs when a person does something that he did not intend to happen which affects the accuracy and the precision of the acquired data or results.</span>
