Select the correct answer. Write (-2 − 2i) + (10 − 4i) as a complex number in standard form.

A.
-4 + 6i
B.
8 − 6i
C.
6
D.
12 − 6i

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Someone me i need with this stuff

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows.statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.