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Nady [450]
3 years ago
10

5x-5y+4z=15 3x+5y-6z=7 -x+5y-5z=20

Mathematics
1 answer:
Kazeer [188]3 years ago
6 0

Answer:

Step-by-step explanation:

7x+5y-8z=42

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What is the factored form of the expression 9x2 + 6x + 1?
DanielleElmas [232]

Answer:

(3x + 1)²

Step-by-step explanation:

Given

9x² + 6x + 1 ← is a perfect square of the form

(ax + b)² = a²x² + 2abx +  b²

Compare like terms to find a and b

a²x² = 9x² ⇒ a² = 9 ⇒ a = \sqrt{9} = 3

b² = 1 ⇒ b = \sqrt{1} = 1

and 2ab = 2 × 3 × 1 = 6

Thus

9x² + 6x + 1 = (3x + 1)²

4 0
4 years ago
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ludmilkaskok [199]
The answer of -30+10 is -20

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3 years ago
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gizmo_the_mogwai [7]

Answer:

answer is a

Step-by-step explanation:

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area would just be the size of the glass on bottom

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6 0
3 years ago
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Which equation is represented by the graph below?
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The are you have selected
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Office supplies had a normal starting balance of $75. there were debit postings of $80 and credit postings of $60 during the mon
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Answer:

I think it’s 95 debit but it could be credit

Step-by-step explanation:

75 + 80 = 155

155 - 60 = 95

5 0
3 years ago
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