The sum of 10 times a number and 15 is added to 11 times the same number.

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¯¯¯¯¯¯¯¯)?

40 describe the outliers from the scatter plot.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.