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ddd [48]
4 years ago
7

(Please help :) Look at the sequence of numbers in each question and write the expression using n (find the nth term, eg, 3n+6)

Mathematics
1 answer:
siniylev [52]4 years ago
8 0

Answer:

Tricky

Step-by-step explanation:

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If the points A, B and C have the coordinates A(5, 2), B(2, −3) and C(−8, 3), show that the triangle ABC is a right-angled trian
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Answer:

See below.

Step-by-step explanation:

Triangle ABC will be right-angled if 2 of its sides are perpendicular to each other. When sides are perpendicular the product of their slopes = -1.

Slope  of side AB = (-3-2)/(2-5) = -5/-3 = 5/3

Slope of side BC = (3- -3) / -8-2) = 6/-10 = -3/5

The product of the slopes = 5/3 * -3/5 = -15/15 = -1.

So AB is perpendicular to BC  and triangle ABC is right-angled .

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