I think these are the answers but i'm not to sure: 20.0. 15
13,822 to one significant figure is 10,000
623 to one significant figure is 600
14 to one significant figure is 10
10,000 times 600 = 6,000,000
6,000,000/10 = 600,000
Replacing 9 for the nth term of the sequence we get 9^2 + 1 = 82, Therefore the 9th term is = 82
<u>1)</u> 4 kg
60-56=4 kg
<u>2)</u> 9 rows
6*12=72
72/8=9
<u>3)</u> 49 chairs
14*16=224
224-175=49
<u>4)</u> 40
125-45=80
80/2=40
<u>5</u>) 60 years old
10*2=20
20*3=60
<u>6</u>)
3*5.50=$16.50
4*1.75=$7
don't think the question is finished.
