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3 years ago

A flower garden has been designed with an L-shaped walkway and viewing area around two sides as shown.

Mathematics

1 answer:

nikdorinn [45]3 years ago

8 0

Answer:

c. 2.4 yards

Step-by-step explanation:

If x is the width of the walkway, then the total landscape area is ...

(4.5 +x)(7.5 +x) = 68.31

This quadratic equation can be rearranged to standard form and solved in any of the usual ways.

(x +4.5)(x +7.5) -68.31 = 0

x² +12x -34.56 = 0

Using the quadratic formula, we have ...

x = (-12 ±√(12² -4(1)(-34.56)))/2 = -6 ± √70.56 = -6 ± 8.4

The positive solution is x = 2.4.

The width of the walkway is 2.4 yards.

_____

A graphing calculator or spreadsheet solver can also find the solution for you.

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3 years ago

8. A right cone has a volume of 8,579 m3 and a radius of 16 m. Find its altitude.

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Answer:

Option A is correct.

Step-by-step explanation:

The formula used for finding the volume of right cone is:

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Oksanka [162]

Answer:

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He can fix it by correcting the wrong numbers.

Step-by-step explanation:

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