Answer:
a posative
Step-by-step explanation:
I think the answer is 4.5%
Answer:
1, 5, 8
Step-by-step explanation:
1 is a vertical angle with angle 4, so is congruent.
5 is an alternate interior angle with angle 4, so is congruent.
8 is a corresponding angle with angle 4, so is congruent.
Answer:

Step-by-step explanation:
Given A = 5i + 11j – 2k and B = 4i + 7k, the vector projection of B unto a is expressed as 
b.a = (5i + 11j – 2k)*( 4i + 0j + 7k)
note that i.i = j.j = k.k =1
b.a = 5(4)+11(0)-2(7)
b.a = 20-14
b.a = 6
||a|| = √5²+11²+(-2)²
||a|| = √25+121+4
||a|| = √130
square both sides
||a||² = (√130)
||a||² = 130

<em>Hence the projection of b unto a is expressed as </em>
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