MATHEMATICS MIDDLE SCHOOL

Explain a real world situation where you would. need to multiply with negative or rational numbers​

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Answer 1
Answer:

Let us say you must pay someone ten dollars a month. This is the same as being paid negative ten dollars a month. Ten months ago (in negative ten months) you were 100 dollars richer *. (-10)x(-10)=100

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Using the given zero, find one other zero of f(x). Explain the process you used to find your solution.2 - 3i is a zero of f(x) = x4 - 4x3 + 14x2 - 4x + 13.
*Can someone show the work I have the answers

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The zeros of a function are the points where the function cross the x-axis.

One other zero of \mathbf{f(x) = x^4 - 4x^3 + 14x^2 - 4x + 13} is 2 + 3i.

The zero of \mathbf{f(x) = x^4 - 4x^3 + 14x^2 - 4x + 13} is given as:

\mathbf{Zero = 2 - 3i}

The above number is a complex number.

If a complex number a + bi is the zero of a function f(x), then the conjugate a - bi is also the zero of f(x).

This means that, one other zero of \mathbf{f(x) = x^4 - 4x^3 + 14x^2 - 4x + 13} is 2 + 3i.

Read more about zeros of functions at:

brainly.com/question/22101211

Answer:

One other zero is 2+3i

Step-by-step explanation:

If 2-3i is a zero and all the coefficients of the polynomial function is real, then the conjugate of 2-3i is also a zero.

The conjugate of (a+b) is (a-b).

The conjugate of (a-b) is (a+b).

The conjugate of (2-3i) is (2+3i) so 2+3i is also a zero.

Ok so we have two zeros 2-3i and 2+3i.

This means that (x-(2-3i)) and (x-(2+3i)) are factors of the given polynomial.

I'm going to find the product of these factors (x-(2-3i)) and (x-(2+3i)).

(x-(2-3i))(x-(2+3i))

Foil!

First: x(x)=x^2

Outer: x*-(2+3i)=-x(2+3i)

Inner:  -(2-3i)(x)=-x(2-3i)

Last:  (2-3i)(2+3i)=4-9i^2 (You can just do first and last when multiplying conjugates)

---------------------------------Add together:

x^2 + -x(2+3i) + -x(2-3i) + (4-9i^2)

Simplifying:

x^2-2x-3ix-2x+3ix+4+9  (since i^2=-1)

x^2-4x+13                     (since -3ix+3ix=0)

So x^2-4x+13 is a factor of the given polynomial.

I'm going to do long division to find another factor.

Hopefully we get a remainder of 0 because we are saying it is a factor of the given polynomial.

                x^2+1

              ---------------------------------------

x^2-4x+13|  x^4-4x^3+14x^2-4x+13                    

              -( x^4-4x^3+ 13x^2)

            ------------------------------------------

                                 x^2-4x+13

                               -(x^2-4x+13)

                               -----------------

                                    0

So the other factor is x^2+1.

To find the zeros of x^2+1, you set x^2+1 to 0 and solve for x.

x^2+1=0

x^2=-1

x=\pm √(-1)

x=\pm i

So the zeros are i, -i , 2-3i , 2+3i

Cierra has 3 more than one half as many purses as Aisha. Define a variable and write an expression to represent the number of purses in Cierra's collection. Then find the number of purses in Cierra's collection if Aisha has 12 purses.

Answers

Here is the answer.


x = number of Cierra's purses

y = number of Aisha's purses

Equation =

y/2 + 3 = x

12/2 + 3 = x

6 + 3 = 9

Cierra has 9 purses

How many times does 50,000 go into 37,000,000

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hello,

You do 37,000,000÷50,000=740 so you have to do 740x50,000=37,000,000.

My teacher hasn't taught us this yet but it's gonna be on the test. can u please explain if u can

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I don't like your teacher. not teaching something and putting it on the test. I hope that it is just that you weren't paying attention, or you were absent and not because you had a faulty teacher.


ok so from ABC to A"B"C" is down and to the left and it gets bigger

cross out an options that go up and right (cross out B&C)

it got bigger so the scale factor is not 1/2, it is 2

answer is D

Erin ran 1/4 the distance that Carolyn ran. Erin ran a total of 1.5 miles. How far did Carolyn run? (Please explain)

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1.5 ×4 will get u 6. so there fore 6 divided by 4 equals 1.5

The day after a national holiday, decorations were marked down 40%. Before the holiday, a patriotic banner cost $5.75. How much did the banner cost after the holiday? a. $1.15
b. $2.30
c. $3.45
d. $8.05

SHOW YOUR WORK PLEASE!!!

Answers

Answer:

The price after holiday is c. $3,45

Step-by-step explanation:

Patriotic banner cost $5,75

Mark down  (discount) is 40%

So,  the discount is $5.75 x 0,40= $2,3

The new price is the price before holiday P -

discount D

P¹= P-D

P¹=5,75-2,3

P¹= 3,45          

40% down means 60% of the original price is remaining
5.75 * .6 = $3.45
C. the banner cost $3.45
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