A restaurant sells a refillable coffee mug for $7.75. Each refill costs $3.25. Last month Keith spent $82.75 on a mug and refill
1 answer:
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<h2>Answer with explanation:</h2>
We are given vectors u,v and w as follows:
(a)
Now we are asked to find the value of:
The value is calculated as follows:
Hence,
(b)
We are asked to represent (3,4,5) as a linear combination of u, v, and w.
Let:
i.e.
on multiplying equation(1) by 2 an then adding equation (1) to equation (3)
on putting the value of a in equation (2) we get:
Now on putting the value of a and b in equation (1)
Hence, we have: