Answer:
(2,7)
Step-by-step explanation:
Distribute:
-4x+28=36
Subtract 28 from both sides:
-4x=8
Divide both sides by -4;
x=-2
The answer is x=-2
Answer:
45
Step-by-step explanation:
(3)(7)−(6)(−4)
=21−(6)(−4)
=21−(−24)
=45
Given:
Two vectors are:


To find:
The projection of u onto v.
Solution:
Magnitude of a vector
is:

Dot product of two vector
and
is:

Formula for projection of u onto v is:




On further simplification, we get



Therefore, the projection of u onto v is
.
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