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LUCKY_DIMON [66]
2 years ago
5

1. Complete the problem by using your calculator. Round your answer to three decimal places.

Mathematics
1 answer:
DaniilM [7]2 years ago
3 0

Answer:

c.

Step-by-step explanation:

Plug in -2 for x ....

f(x) = -2^3 - 7(-2)^2 + 3

     = -8 - 28 + 3

     = -36 + 3

     = -33

Plug in 3/4 for x ....

f(x) = 3/4^3 - 7(3/4)^2 + 3

     = 27/64 - 63/16 + 3

The put in decimals ....

27/64 = .422

63/16 = 3.938

Put the decimals back into the equation ....

     = .422 - 3.938 + 3

     = -3.516 + 3

     = -.516

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yaroslaw [1]

Answer:

The value of x is:

x=\dfrac{5\pm \sqrt{103}i}{8}

Step-by-step explanation:

we have to use the quadratic formula to solve for x.

The equation is given as:

4x^2-3x+9=2x+1

which could also be written as:

4x^2-3x+9-2x-1=0\\\\4x^2-3x-2x+9-1=0\\\\\\4x^2-5x+8=0

The quadratic formula for the quadratic equation of the type:

ax^2+bx+c=0 is given as:

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

Here we have:

a=4, b=-5 and c=8.

Hence, by the quadratic formula we have:

x=\dfrac{-(-5)\pm \sqrt{(-5)^2-4\times 8\times 4}}{2\times 4}\\\\x=\dfrac{5\pm \sqrt{25-128}}{8}\\\\\\x=\dfrac{5\pm \sqrt{103}i}{8}

Hence, the value of x is:

x=\dfrac{5\pm \sqrt{103}i}{8}

8 0
3 years ago
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SOMEONS PLEASE HELP ME I will mark brainliest!!!
tresset_1 [31]

Answer:

x=9

Step-by-step explanation:

because I asked my in-collage brother who told me

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2 years ago
The area of the triangle is ____ (rounded to the ones place) inches squared
Rzqust [24]

Answer: 27.7 square inches.

Step-by-step explanation:

Let 'a' be the side of equilateral triangle.

Then the perimeter of the triangle = a+a+a=3a

Given: Perimeter of the equilateral triangle = 24 inches                                                          We know that the area of a equilateral triangle is given by :-

4 0
3 years ago
Please help What’s the answer?
morpeh [17]

Answer:

A. x=54 And

B. x= 89

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< this sign prove that what is the less number of given question.

6 0
3 years ago
What Is 2 + 2^2 + 10?
ikadub [295]
The answer is 16 
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6 0
3 years ago
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