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3 years ago

2x – 3y = -5

Mathematics

1 answer:

vampirchik [111]3 years ago

4 0

Answer:

y = 3

Step-by-step explanation:

2x-3y = -5 --------- (1)

y = 2+x ------- (2)

substitute (2) into (1)

2x-3y = -5

2x-3( 2+x ) = -5

2x-6-x = -5

2x-x = -5+6

x = 1

substitute x = 1 into (2)

y = 2+x

y = 2+1

y = 3

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When t=8,

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Hence the first nine triangular number are

C) 1, 3, 6, 10, 15, 21, 28, 36, 45

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