exam
Maths Puzzle
Numerical Ability
Find the length of the latus rectum of the parabola with an equation
x^2-6x-8y+25
Work so far:
x^2-6x=8y-25
x^2-6x+9=8y-25
(x-3)^2=8y-25
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exam Other Question
could you help me factor completely? i tried where am i wrong?
x^2+2x-80
x^2+160-3x-80
(x^2+160x)-(3x+80)
x^2(x+160)-3(x+80)
a bus leaves a station at 1 p.m traveling west at an average rate of 44 mile an hour. one hour later a second bus leaves the same station traveling east at a rate of 48 mile an hour. at what time will the two buses be 274 mile apart