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NISA [10]
3 years ago
15

How do i solve this ?(x+3)(x-5)=

Mathematics
2 answers:
WARRIOR [948]3 years ago
6 0

(x+3)(x-5)=x^2-5x+3x-15=x^2-2x-15

Ainat [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Use FOIL method

(x + 3)(x - 5) = x*x  + x *(-5)  + 3*x +  3*(-5)

                    = x² - 5x  +3x - 15  {add like terms}

                    = x² - 2x -15

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Answer:

Based on the model, the length of the wall is \frac{9}{8} ft, the width of the wall is \frac{1}{2} ft,  and the height of the wall is \frac{11}{8} ft. The volume of the portion of security wall that  Tim has constructed so far is \frac{99}{128}  cu ft.

Step-by-step explanation:

Given:

The figure constructed shows a rectangular prism made up of small wooden cubes of length \frac{1}{8}\ ft.

Width of the prism = \frac{1}{2}\ ft.

To find length , height and volume of the figure.

Solution:

From the figure we can conclude that :

Length side of the prism counts 9 cubes.

Thus, length of the prism will be given as :

⇒ \textrm{Length of each cube}\times \textrm{Number of cubes}

⇒ \frac{1}{8}\ ft\times 9

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Height side of the prism counts 11 cubes.

Thus, height of the prism will be given as :

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⇒ \frac{1}{8}\ ft\times 11

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