victoriakraus3497
15.07.2019 •
Mathematics
At a large nursery, a border for a rectangular garden is being built. designers want the border’s length to be 5 feet greater than its width. a maximum of 180 feet of fencing is available for the border. write and solve an inequality that describes possible widths of the garden
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Ответ:
Let
x> the border’s length
y> the border’s width
P> perimeter of the border
we know that
x=5+y> equation 1
P=2*[x+y]> P=2x+2y
P <=180 ft
(2x+2y) <= 180> equation 2
substitute the equation 1 in equation 2
2*[5+y]+2y <= 180
10+2y+2y <= 180
4y <= 180-10
4y <=170
y <=42.5 ft
so
the maximum value of the width is 42.5 ft
for y=42.5 ft
x=42.5+5> x=47.5 ft
the answer is
the width of the border is less than or equal to 42.5 ft
Ответ:
Company A: 250+10n
Company B: 90+12n
Step-by-step explanation: