What is the sum

56+90=

Find the total area for the regular pyramid ( follow the answer set up in the picture)

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Solving algebraic equations 2m+3=11