Amountain named abc is located 255 miles under the ocean level. if mountain def is 3 times deeper than the mountain abc, where is mountain def? write the location of def as an integer.

The conversion factor relating feet to meters is 1 ft=0.305 m. keep in mind that when using conversion factors, you want to make sure that like units cancel leaving you with the units you need. you have been told that a certain house is 164 m2 in area. how much is this in square feet?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Could somebody me with this radical simplification?