What is -16 + -6u < 1.58

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¯¯¯¯¯¯¯¯)?

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

Multiplying fractions by whole number 5 x 1/3=?