Carry out the following operations, and express the answer with the appropriate number of significant figures:
part a: 320.37-(61016.8/3.3)=?
part b: [(290..100x10^3)]x2.8932=?
part c: (0.0040x29000.0)+(2818x15)=?
part d: 868x[1253-(3.87x108)]=?
i calculated all of them and i want you guys to me check it.
pa: -1.6x10^3
pb: 8.364x10^6
pc: 4.2x10^4
pd: 7.24x10^5

Solve this equation 6.1(2x+10)+14x-17.5

Which of the following shows the length of the third side, in inches, of the triangle below

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright