Simplify.
(2–3i) –(4–i)+(5+2i)

4+(2+x) can you me solve this problem

What is the measure of one interior angle of a pentagon

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.