Help in maths..

grade 9

Plz hurry evaluate the expression a+b where a=8 and b=19

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 equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.