Hey i need a tutor or friend for math im really bad at it

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box