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djyliett [7]
2 years ago
10

PLease explain this to me

Mathematics
1 answer:
aliina [53]2 years ago
7 0

Answer:

ok so brainly is a place where you ask questions :P

<em>hope this helps<3</em>

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Lesson 6.2: applications of linear systems this is holding me back from completing the course. Please help me guys and girls.
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Answer:

see explanation

Step-by-step explanation:

When x = 5 then x > 3 , thus

f(5) = - 1

When x = 3 then x ≤ 3 , thus

f(3) = - 2x + 2 = - 2(3) + 2 = - 6 + 2 = - 4

-----------------------------------------------------------

When x = - 4 then - 4 ≤ x ≤ 1 , thus

f(- 4) = 2

When x = 3 then x > 1 , thus

f(3) = - x + 1 = - 3 + 1 = - 2

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3 years ago
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3 years ago
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3 years ago
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Answer:

Q1

by \ pythagoras \ theorem : \\(3x +1 )^2 = (3x - 1)^2 +x^2\\\\9x^2 + 6x +1 = 9x^2 + 1 -6x +x^2\\\\9x^2 + 6x +1 = 10x^2 + 1 -6x \\\\ 10x^2 + 1 -6x - 9x^2 -6x -1 = 0 \\\\x^2 -12x = 0\\x(x - 12) = 0\\x = 0, 12\\since \ length \ cannot \be \ 0, x = 12\\OJ = 3x + 1 = 3(12) +1 = 37

Q2

by \  pythagoras  \ thm, \\(7x -12) ^2 = (5x +10)^2 +(2x)^2\\\\49x^ 2 +144 - 168x = 25x^2 +100+ 100x +2x^2\\\\49x^ 2 +144 - 168x - 25x^2 -100- 100x -2x^2 = 0\\\\22x^2 -268x -44 = 0\\11x^2 - 134x - 22 = 0\\x=12.0154

3 0
3 years ago
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