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a_sh-v [17]
3 years ago
12

HELP IM ABOTH TO FAIL

Mathematics
1 answer:
natali 33 [55]3 years ago
3 0

Answer:

f(12) = 1680

Step-by-step explanation:

Substitute n = 12 into f(n) , that is

f(12) = 250 + 130(12 - 1) = 250 + 130(11) = 250 + 1430 = 1680

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What is the completely factored form of f(x)=x3−7x2+2x+4?
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Answer:

The Factored form is

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Step-by-step explanation:

Given;

f(x)=x^{3} -7\times x^{2} +2x+4

To solve for x  we factorize the right side  of

f(x)=x^{3} -7\times x^{2} +2x+4

Let Substitute x for various values to check whether remainder is zero.

f(1)=1^{3} -7\times 1^{2} +2\times 1+4

Hencex-1 is a factor of the function.

Do synthetic division to find the quotient

1    1  -7  2   4

          1 -6 -4

  _____________________

      1  -6 -4 0

We get remainder 0 and quotient as,

x^{2} -(6\times x)-4

By using Quadratic Formula;

x=\frac{-b\pm\sqrt{b^{2}-4ac } }{2a}

Plug 'a' , 'b' and 'c' value from x^{2} -(6\times x)-4 equation,

x=\frac{-(-6)\pm\sqrt{-6^{2}-(4\times1\times -4 )} }{2\times1}

x=\frac{6\pm\sqrt{36+16 } }{2}

x=\frac{6\pm\sqrt{52} }{2}

x=3+\sqrt{13} and x=3-\sqrt{13}

The values of 'x' are 1 , 3+\sqrt{13} and   3-\sqrt{13}

So the Factored form is

f(x)=(x-1)(x-3-\sqrt{13} )(x-3+\sqrt{13} )

7 0
3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

D

Step-by-step explanation:

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The plant increased a total of 4 inches. 

Week 3, the plant was 8in and week 4, the plant was 12in.

To find our solution, subtract 8 from 12

12-8=4
8 0
3 years ago
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jeyben [28]

Answer:

D

Step-by-step explanation:

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