Two angles have measures of 63 degrees 15'47" and 116 degrees 44'13" are the angles complementary or supplementary?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Which pair of numbers is relatively prime? a. 105 and 128 b. 130 and 273 c. 205 and 350 d. 273 and 333

Solve the system of equations. 2x-2y=-4 and x+y=8. show work