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Brums [2.3K]
3 years ago
7

Sally went into the local dollar store because they have so many deals .the following deal that she was debating is 4 bars of so

ap that cost $5 .what would 8 bars cost her
Mathematics
1 answer:
Agata [3.3K]3 years ago
7 0
8 is twice 4, so ten dollars because that is $5 twice
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P(x) = x3 - 2x2 + 2x<br> What are the real and complex zeros of the equation
vesna_86 [32]

Given:

The polynomial is

p(x)=x^3-2x^2+2x

To find:

The real and complex zeros of the equation.

Solution:

We have,

p(x)=x^3-2x^2+2x

For zeros, p(x)=0.

x^3-2x^2+2x=0

x(x^2-2x+2)=0

x(x^2-2x+2)=0

x=0\text{ and }x^2-2x+2=0

The real value of x is 0. The equation x^2-2x+2=0 will give complex roots. Here, a=1, b=-2 and c=2.

Using quadratic formula, we get

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

x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(2)}}{2(1)}

x=\dfrac{2\pm \sqrt{4-8}}{2}

x=\dfrac{2\pm \sqrt{-4}}{2}

On further simplification, we get

x=\dfrac{2\pm \sqrt{-1}\sqrt{4}}{2}

x=\dfrac{2\pm 2i}{2}

x=\dfrac{2(1\pm i)}{2}

x=1\pm i

Therefore, the real zero is 0 and the complex zeros are 1+i and 1-i.

5 0
3 years ago
Find the length of AC. Round your answer to two decimal places. A 10 in. b 40° C B a​
stepladder [879]

Using relations in a right triangle, it is found that the length of AC is of 6.43 inches.

<h3>What are the relations in a right triangle?</h3>

The relations in a right triangle are given as follows:

  • The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.
  • The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.
  • The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.

In this problem, the length of side AC is b, which is opposite to the angle of 40º, while the hypotenuse is of 10 in, hence:

\sin{40^\circ} = \frac{b}{10}

b = 10 \times \sin{40^\circ}

Using a calculator:

b = 6.43

More can be learned about relations in a right triangle at brainly.com/question/26396675

4 0
2 years ago
Fractions equivalent to 1:2<br> Please don’t be bots that post it in a link
stepan [7]

Answer:

1/2 or .5 or 1:2

Step-by-step explanation:

3 0
3 years ago
WHICH IS NOT A LINEAR FUNCTION ​
Tom [10]

Answer:

OPTION C

Step-by-step explanation:

IN OPT. A- 2 IS MULTIPLED IN EACH NO.

IN OPT.B-2 IS MULTIPLED

IN OPT.D-1 IS ADDED

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4 0
3 years ago
Thanks plz help important thanks you I need help plz I give brainliest
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Hope its right hehe pls give brainliest if right
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