A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about?

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Asmall foreign car gete 42 miles per gallon and user 35 gallons on a trip.gasoline costs $1.05 per gallon.what was the cost of gasoline per mile driver?

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.