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Leviafan [203]
3 years ago
11

Pls help with these 4 questions!

Mathematics
2 answers:
Igoryamba3 years ago
6 0

Answer:3.233

Step-by-step explanation:

sergejj [24]3 years ago
3 0

Answer:

It is A.

Step-by-step explanation:

also, this is one question. A, B, C and D are just answers.

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3 years ago
The height of a triangular window is 3 feet less than its base. The area the window is 20 ft.? find the dimensions of the window
Ivenika [448]

Let us assume base of the window = b feet.

Height is 3 feet less than base, that is = (b-3).

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We know formula for area of a triangle:

Area = \frac{1}{2} × Base × Height

Plugging values in formula, we get

20 = \frac{1}{2} b \times (b-3)

\mathrm{Multiply\:both\:sides\:by\:}2

40=b\left(b-3\right)

40=b^2-3b

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Factoring quadratic, we get

\left(b+5\right)\left(b-8\right)=0

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For base we can take only positive value.

<h3>Therefore, base of the triangle = 8 feet and height = 8 -3 = 5 feet.</h3>
6 0
3 years ago
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