- Seven less than twice a number x is represented by which of the following expressions?

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Please help me:Find the coefficient of the given term in the binomial expansion. x^6 term, (x-3)^10? In optical fibre how can the time difference of different dispersion can be reduced? 243 lbs berapa kilogram? 4 cm rep 10m, what s the area of a rectangular shown as 8.5cm by 5.8cm? I should have the answer 308.125 metre sq. How do i work this out?!? Wy is there a need for teachers to teach maths using variety of strategies?