Which is the sum of 3.15 × 107 + 9.3 × 106? Write your answer in scientific notation. A 4.08 × 106 B 4.08 × 107
C 0.408 × 108 D 40.8 × 106

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.

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

How do i i solve this equation? -18 = x/3 + 3