Calcule as potências a seguir e veja se a diferenças entre elas:
a)2⁴
b)(-2)⁴
c)-2⁴​

Can someone explain the elimination method to me for this problem?

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.

What value of s iwhat value of s is a solution to this equation? 27+6s=9ss a solution to this equation? 27+6s=9s