What is the inverse of the conditional statement? if a polygon the has five angles, then it is a pentagon

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?