Answer:
(5) 84° and 96° ; (6) 40° and 50°
Step-by-step explanation:
5) <em>Supplementary angles are in the ratio 7 : 8</em>
So 7x + 8x = 180°
15x = 180
x = 180/15
x = 12
The angles are 7x = 7 * 12 = 84° ; 8x = 8 * 12 = 96°
6) <em>Complementary angles are in the ratio 4 : 5</em>
So 4x + 5x = 90°
9x = 90
x = 90/9
x = 10
The angles are 4x = 4 * 10 = 40° ; 5x = 5 * 10 = 50°
10x^2-170x is the answer I think you're looking for
495 minutes. Well you will have to work put how many hours that makesim sorry
The dot product of the two vectors will be given as follows:
v*w=(-7i+4j)*(-6i+5j)
=(-7*(-6))i+(4*5)j
=-42i+20j
Hence the answer is:
v*w=(-42i+20j)
