Search over 10,000 free study notes

213 miles/hour speed = distance/time
round 213 to 200 as only an estimate;
s=200/1 hour = 200/3600 seconds (then divide by 200 to get time for 1 mile)s = 1/18
at this speed, the plane trave...

a^2+b^2=c^2Rearrange so that c = sqrt(a^2+b^2) = 5.83 cm

This is factorisation by common factor, so we need to write 4x+6x² as a product. First we need to find the highest common factor of 4x and 6x² so that we can take it out, which in th...

Expand brackets on LHS4x+12=2x+8Collect "like" terms4x-2x=8-122x=-4Divide both sides by 2 to solve for xx=-4/2=-2Final Answerx=-2

dy/dx = 9x^2 - 12x + 2