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Mathematics, 04.07.2019 20:00 oneicyahdaley10
Raj tried to solve the system below. 9x-y=15 2x+8y=28 raj’s work 9x - y = 15 2x + 8y(15 + 9x) = 28 9(-46/37) - y = 15 -y = 15 - 9x 2x + 120 + 72x = 28 -414/37 - y = 15 y = -15 + 9x 74x + 120 = 28 y = 969/37 74x = -92 x = -46/37 what error did raj make? a) rag forgot to multiply the value of x by 9 when solving for the value of y. b) when raj solved for the value of x, he subtracted 120 from both sides. c) raj forgot the negative when substituting –15 + 9x for y. d) raj found the value of –y instead of y.
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Raj tried to solve the system below. 9x-y=15 2x+8y=28 raj’s work 9x - y = 15 2x + 8y(15 + 9x) = 28 9...
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