Step-by-step explanation:
2a -5a +8a.
2a +8a -5a
10a -5a = 5a
14-7=7
<em>Answer=5a+7</em>
<em>☽------------❀-------------☾</em>
<em>Hi there!</em>
<em>~</em>
<em>2.3 to 1 significant figure.</em>
<em>= 2</em>
<em>❀Hope this helped you!❀</em>
<em></em>
Answer: .2529
Explanation:
1) 10^-3= .001
2).001*2.9=.0029
3) .25+.0029= .2529
