3 years ago

Multiply: (3x + 2)(3x - 2)a.-3x² - 4b.6x² - 4c.6x² + 4d.9x² - 4

Mathematics

1 answer:

Ratling [72]3 years ago

3 0

Answer:

Step-by-step explanation:

Set it up

3x(3x - 2) + 2(3x - 2)

2. Multiply

9x^2-6x+6x-4

3. Simplify

9x^2- 4

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a gardener is putting a wire fence along the edge of his garden to keep animals from eating his plants. if he has 20meters of fe

Alexeev081 [22]

Answer:

The largest rectangular space is $24m^{2}$

Step-by-step explanation:

Given a 20m long wire fence, implies that the perimeter of the fence has been given, because Perimeter can be defined as the length of the boundary of a figure (in this case, a rectangle)

So, from the formula: Perimeter = 2 (L + B) = $20m^{2}$

We have that L + B = $10m^{2}$

The possible values of L and B are:

(L, B) = (9, 1), (8, 2), (7, 3) and (6, 4).

The areas of the rectangle that will be formed using these values are respectively; $9m^{2}$ , $16m^{2}$ , $21m^{2}$ and $24m^{2}$ , the largest area of which is the last which corresponds to the values (6, 4).