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arsen [322]
3 years ago
14

Which model represents the factors of x2 + 9x + 8?

Mathematics
2 answers:
Valentin [98]3 years ago
9 0

Answer:

C

Step-by-step explanation:

I got it on the test and it worked

Tomtit [17]3 years ago
5 0

Answer: the answer is D

Step-by-step explanation:

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Identify the expression which represents the calculation “subtract 3 from 15, then divided by 6
matrenka [14]

Answer:

\frac{15-3}{6}

Step-by-step explanation:

You would start by writing the expression for “subtract 3 from 15", which would be \frac{15-3}{6}, then you would add on "then divided by 6", which would make it

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3 years ago
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Black_prince [1.1K]

Answer:

  • 171/40 or 4 11/40

Step-by-step explanation:

<h3>AP given</h3>
  • a + b, a - b,  ab, a/b
<h3>To find</h3>
  • 6th term
<h3>Solution</h3>

Common difference

<u>Difference of first two</u>

  • d = (a -b) - (a + b) = -2b

<u>Difference of second two</u>

  • d= ab - (a - b)

<u>Difference of last two</u>

  • d = a/b - ab

<u>Now comparing d:</u>

  • -2b = ab - (a - b)
  • ab - a = - 3b
  • a(1 - b) = 3b
  • a = 3b/(1 - b)

and

  • a/b - ab = -2b
  • a(1/b - b) = -2b
  • a = 2b²/(b² - 1)

<u>Eliminating a:</u>

  • 2b²/(b² - 1) = 3b/(1 - b)
  • 2b/(b+1) = -3
  • 2b = -3b - 3
  • 5b = - 3
  • b = -3/5

<u>Finding a:</u>

  • a = 3b/(1 - b) =
  • 3*(-3/5) *1/(1 - (-3/5)) =
  • -9/5*5/8 =
  • -9/8

<u>So the first term is:</u>

  • a + b = -3/5 - 9/8 = -24/40 - 45/40 = - 69/40

<u>Common difference:</u>

  • d = -2b = -2(-3/5) = 6/5

<u>The 6th term:</u>

  • a₆ = a₁ + 5d =
  • -69/40 + 5*6/5 =
  • -69/40 + 240/40 =
  • 171/40 = 4 11/40
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3 years ago
What are the steps for constructing a copy of an angle using only a compass and<br> a straightedge?
juin [17]

Answer:

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4. Extend the compass so that the pencil is on the 2nd point & make a an arc thru point B

5. Place the compass point on the starting point dot on the line and draw w/ the pencil to create an arc crossing the line.

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Answer:

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Answer:

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Step-by-step explanation:

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