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Illusion [34]
3 years ago
13

5. 12.8 ft 9 ft 9 ft

Mathematics
2 answers:
user100 [1]3 years ago
7 0

Answer:

9 x 9 = <em>81</em>

9 x 12.8 x 1/2 (basically just dividing by 2) = 57.6(area of 1 triangle),                     57.6 x 4(there are 4 sides of triangles) = <em>230.4</em>

Let's add all the given areas:

81 + 230.4 = 311.4 ft^2

kykrilka [37]3 years ago
3 0

Answer:

what do we have to solve? surface area? volume?

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What is (x+2)(x+5) in polynomial standard form
Harlamova29_29 [7]

Answer:

=x^2+7x+10

Step-by-step explanation:

Simplify: xx+5x+2x+2.5: x+7x+10

Add similar elements: 5x+2x= 7x

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xx=x2

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svet-max [94.6K]

Answer:

1)· 5x + 2y = 9. First we solve for y. 2y= 9 -5x. y=(9-5x)/2. Now that we have the value of y. We substitute on the original equation and resolve. 5x + 2y = 95x + 2y = 9  5x + 2(9-5x)/2 = 9  5x + 9 - 5x = 9  9 = 9

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Now substitute and resolve to find y.  

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5 + 2y = 9

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Proof :  

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Step-by-step explanation:

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