Acertain triangle has a 30 angle and a 60 angle. which must be a true statement about the triangle?? ?

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 (%)

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?