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3 years ago

P(x) = 3x2 - 7x + 11, find P(9).

Mathematics

2 answers:

nadya68 [22]3 years ago

6 0

You need to substitute 9 with every x value in the equation.
So, 3(9)^2-7(9)+11
p(x)= 191

const2013 [10]3 years ago

5 0

$P(9) = 3\cdot9^2-7\cdot 9 +11 = 3\cdot 81 - 63 +11 = 243-63 + 11 =\\=180+11=191$

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shusha [124]

Answer:

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Step-by-step explanation:

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I hope this was helpful. Have a wonderfull rest of your day!

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3 years ago

Suppose a triangle has to size of lint 42 and 35 and the angles between these 2 sides is 120 which equated should you solve to f

Brilliant_brown [7]

Answer:

$7\sqrt{91}\ units$ or $66.78\ units$

Step-by-step explanation:

we know that

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In this problem we have

$a=42\ units, b=35\ units, C=120\°$

c is the length of the third side

Substitute

$c^{2}=42^{2}+35^{2}-2(42)(35)cos(120\°)$

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3 years ago