Which expression is equivalent to 4^7 x 4^-5

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?