On the beach, Andy and Matt arranged 30 rows of shells. Each row contained 30 shells. How many shells did Andy and Matt arrange?

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor