The answer is 40 because if you do simple division you will get that 800/20 is 40
3.21 meters
There's 100 centimeters in a meter (centi means 100) so 79 centimeters equals 0.79 meters. So 4 - 0.79 is 3.21
<span>It's 1/5(m-100). What you do is 1/5 and connect it with what is in the parenthesis and your answer will be -20 just like when you do 1/5m-20</span>
it would take them 5 hours and 70 seconds
18xy
You need to do 6*3=18
Then x*y= xy