What two integers does square root of 7 fall between

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Hi my sisters and brothers can tell me the answer because i don’t understand the 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 (%)