aasiarobinson998
04.09.2020 •
Mathematics
HELP HELP HELP HELP HELP
The length of the adjoining rectangular park is two times its
breadth. The cost of constructing two crossing paths running
across the middle of the park at Rs 20 per sq. m is Rs 9000. If the
cost of plastering the shaded portion of the park at Rs 35 per sq. m
is Rs 315, find the cost of growing grasses in the empty spaces at
arge for
er in a
ge.
its of
d the
Rs 12 per sq. metre,
Solved
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Ответ:
mrbilldoesmath!
answer: a parabola
steps:
(x-1)(x+4) = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)
= x^2 +4x -x -4 = x^2 +3x -4
which is a parabola
mrb