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Alex787 [66]
3 years ago
11

Pls help, question on picture, will do brainliest if right no links!!!!!

Mathematics
1 answer:
nirvana33 [79]3 years ago
4 0
The answer is
sin(x)12/15
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Solve for x in the equation x2+2x+ 1 = 17.
Tresset [83]

For this case we must solve the following quadratic equation:

x ^ 2 + 2x + 1 = 17

Subtracting 17 from both sides of the equation we have:

x ^ 2 + 2x + 1-17 = 0\\x ^ 2 + 2x-16 = 0

The solution of the equation is given by:

x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}

Where:

a = 1\\b = 2\\c = -16

Substituting the values we have:

x = \frac {-2 \pm \sqrt {2 ^ 2-4 (1) (- 16)}} {2 (1)}\\x = \frac {-2 \pm \sqrt {4 + 64}} {2}\\x = \frac {-2 \pm \sqrt {68}} {2}\\x = \frac {-2 \pm \sqrt {2 ^ 2 * 17}} {2}\\x = \frac {-2 \pm2 \sqrt {17}} {2}\\x = -1 \pm \sqrt {17}

Thus, we have two roots:

x_ {1} = - 1+ \sqrt {17}\\x_ {2} = - 1- \sqrt {17}

Answer:

x_ {1} = - 1+ \sqrt {17}\\x_ {2} = - 1- \sqrt {17}

4 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!
rodikova [14]

Answer:

Step 2

Step-by-step explanation:

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8 0
3 years ago
Please help me please​
Paul [167]

Answer:

its A ik the answer it. ommb

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D=7
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6 0
3 years ago
What is the value of "twelve more than the quotient of a number and two, decreased by four" when n = 4?
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Maybe 10 Is the answer

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3 years ago
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