smayanofficial smayanofficial

21-04-2020
Mathematics

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Help with this math question and i will give you 40 points and mark you the brainliest

Help with this math question and i will give you 40 points and mark you the brainliest class=

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amna04352 amna04352

21-04-2020

Answer:

a) CD = 6a + 4.5b

b) k = 4

Step-by-step explanation:

CD = CA + AB

CA = -AC

CD = -3b + 6a + 7.5b

CD = 6a + 4.5b

BC is parallel to CD

BC = BA + AC

BC = ka + 3b

BC is a scalar multiple of CD

Scale factor:

3/4.5 = 2/3

k = ⅔(6)

k = 4

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