What is the perimeter of the figure shown above? a. 10 cm c. 15 cm b. 20 cm d. 19 cm

What is the smallest integer n such that n\sqrt{2} is greater than 20

What is the prime factorization of 23 ?me with this question

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 (%)