!28 POINTS! I need help quick!! The area of a rectangle is 2x^2-7x-15. Determine binomials that represent the length and the wid
1 answer:
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Divide both sides by -3, and replace with
. Then
Factorize the quadratic in to get
which in turn means
But for all real
, so we can ignore the first solution. This leaves us with
If we allow for any complex solution, then we can continue with the solution we ignored:
To find AB(x) and BC(y), you can do(there are multiple ways you can do this):
tan A =
tan 60° = or (tan 60°) · 7 = y
tan 60° =
√3 · 7 = y
7√3 cm = y
sin B =
sin 30° = or
sin 30° = =
x =
x = 14 cm
AB = 14cm
BC = 7√3 cm
