A bag contains 3 blue coins and 9 red coins. A coin is removed at random and replaced by three of the other color. Part 1 out of
2 answers:
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Answer:
The equation is:
And the solution is:
Step-by-step explanation:
Given
Represent Kiran with K and Tyler with T
Kiran score is represented as:
Also, Kiran scored 223 less than Tyler.
This is represented as:
Substitute 409 for K
Make T the subject
Answer:
b)0, yes
Step-by-step explanation:
Given:
Vectors (4,8) . (6,-3)
Finding inner product of vectors:
= 4x6 + 8x-3
=24-24
=0
Now to check the angle between them using formula a.b=|a|.|b|cosθ
|a|=
=8.9
|b|=
=6.7
Putting values of a.b=0 and |a|=8.9, |b|=6.7 in a.b=|a|.|b|cosθ we get,
0= 8.9(6.7)cosθ
cosθ =0
θ=90 degrees
Hence the two vectors are perpendicular !