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ivann1987 [24]
3 years ago
9

Let u = <7, -3>, v = <-9, 5>. Find 4u - 3v.

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
7 0

Answer:

a.<55, -27>

Step-by-step explanation:

The given vectors are u = <7, -3>, v = <-9, 5>.

We want to find 4u - 3v.

We substitute the vectors and multiply by the scalars.

4u - 3v=4<7, -3>-3 <-9, 5>.

4u - 3v=<28, -12>- <-27, 15>.

4u - 3v=<28--27, -12-15>

4u - 3v=<55, -27>

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There are several information's of immense importance already given in the question. Based on those information's the answer to the question can be easily deduced.
In 4 hours Ashley rode a distance of = 26.5 miles
Then in 1 hour the distance that is ridden by Ashley = (26.5/4) miles
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