There are 13 students in the third grade and twice that number in the fourth grade. there are 15 boys and 10 girls in the second grade.
how many students are in grades 2 through 4 altogether?

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.

What is the greatest common factor of 8 and 36

Indicate the formula for the following conditions: p^c(n,r)=