Write a subtraction fact that will give the same difference as 15-7

A(t)=728(1+0.04)^t how much money did aditya originally invest

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¯¯¯¯¯¯¯¯)?

Add the fractions and simplify 1/2+ 1/3