Which statement is true for the equation 4x - 4x - 5= -5
no solution
one solution
two solutions
infinitely many solutions

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

25 ! i need asap! ! ill mark brainliest!

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.