Which term completes the product so that it is the difference of squares?
(-5x-3)(-5x+
09

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?