Which of the following platonic solids is also a pyramid?
a. tetrahedron
b. hexahedron
c. octahedron
d. icosahedron e. dodecahedron f. none of these

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by

Which of the following is the graph of y= square root -x-3

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of