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  • 19-09-2020
  • Mathematics
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Please help me solve this practice SAT question!

Please help me solve this practice SAT question class=

Respuesta :

surjithayer10 surjithayer10
  • 19-09-2020

Answer:

t=5

Step-by-step explanation:

∵ (t,17) lies on (x,y) plane y=x²-3x+7,t>0

∴ 17=t²-3t+7

t²-3t+7-17=0

t²-3t-10=0

t²-5t+2t-10=0

t(t-5)+2(t-5)=0

(t-5)(t+2)=0

t=5,-2

t>0

so t=5

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