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Solve asap: 3(2y+10)=54 Within 10 mins pls 8th grade
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Answer:
Step-by-step explanation:
The magnitude of a vector v = ai + bk is
In this problem, we have that:
Find a vector of magnitude 3 in the direction of v=4i-3k:
The first step is finding the unit vector of v, .
So
Magnitude 3, same direction.
We multiply the unit vector by +3, since it is in the same direction. If it was in the opposite direction, we would have multiplied by -3.
The answer is:
<h3>First Method:</h3>
<u>Using cosine rule</u>:
<u>First find XY using sine rule</u>:
Then use Pythagoras Theorem:
⇒ XY² + YZ² = XZ²
⇒ (6)² + YZ² = 12²
⇒ YZ² = 144 - 36
⇒ YZ = √108
⇒ YZ = 6√3
⇒ YZ = 10.4