Given vectors ū = -97 +87 and 5 = 77 +57, find 2ū - 67 in terms of unit vectors and .

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

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor