Luisa begin walking up a hill at a spot where the elevation is 0.9 km. After she walked 3 km she saw a sign giving the elevation as 0.95 km. How far will she have walked when she reaches an elevation of 1.1 km?

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¯¯¯¯¯¯¯¯)?

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5