3 years ago

Given vectors a = <9, 9> and b = <–4, 7>, find 3a − 2b.

Mathematics

1 answer:

dmitriy555 [2]3 years ago

7 0

Answer:

35i+13j

Step-by-step explanation:

Vector a = 9i+9j

Vector b = -4i+7j

We need to find the value of 3a-2b.

3a = 3(9i+9j) = 27i+27j

2b = 2(-4i+7j) = -8i+14j

3a-2b = 27i+27j-(-8i+14j)

= 27i+27j+8i-14j

= 35i+13j

Hence, the required vector is equal to 35i+13j.

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Step-by-step explanation:

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