Does anyone know the answer to this question ?? PLS HELP.
Only answer if you know the answer !!!!
Answers
Polynomial function of least degree having real coefficient with given leading coefficient 1 and having zeros 3, 4 +i is equal to x³ -11x² +41x -51.
As given,
Standard form of the polynomial function:
f(x) = r(x-a)(x-b)(x -c)
r : leading coefficient
a, b, c are zeros
Polynomial function of least degree having real coefficient with given leading coefficient 1 and having zeros 3, 4 +i is given by
f(x) = 1(x -3) (x -(4+i))(x - (4-i))
⇒ f(x) = (x -3) (x-4 -i)(x -4 +i)
⇒ f(x) = (x-3) [(x-4)² -i²]
⇒f(x) = (x-3)(x² -8x +16+1)
⇒f(x) =(x-3)(x² -8x+17)
⇒f(x) = x³-11x² +41x-51
Therefore, polynomial function of least degree having real coefficient with given leading coefficient 1 and having zeros 3, 4 +i is equal to
x³ -11x² +41x -51.
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Related Questions
how do I simplify it to find the determinant in an easy way
Answers
The determinant of the given matrix is [tex]2a^4bc+2c^4ab+6a^3b^2c+6a^3bc^2+6c^3ab^2+6a^2b^3c+12a^2b^2c^2+6a^2c^3b+6c^2ab^3+2acb^4[/tex]
Determinant of the matrix:
Determinant of the matrix is defined as a scalar value which is associated with the square matrix.
Given,
Here we have the matrix show in the question.
Now, we need to find the determinant of the matrix.
To find the determinant of the matrix we have to do the following steps:
1) First we have to pick any row or column in the matrix. It does not matter which row or which column you use, the answer will be the same for any row or column.
2) After the selection you have to multiply every element in that row or column by its cofactor and add. The result is the determinant.
This process can be elaborated in the following steps:
[tex]=(b+c)^2 \times ((a+c)^2 \times (a+b)^2 - b^2 \times c^2) -a^2 \times (b^2 \times (a+b)^2 - b^2 \times c^2) +a^2 \times (b^2 \times c^2 - (a+c)^2 \times c^2)[/tex]
When we expand the equation then we get,
[tex]=(b+c)^2 \times (a^4+2a^3b+2a^3c+a^2b^2+4a^2cb+c^2a^2+2c^2ab+c^2b^2+2acb^2 -b^2c^2) -a^2 \times(b^4+2b^3a+b^2a^2 -b^2c^2) +a^2 \times(b^2c^2 -c^4-2c^3a-c^2a^2)[/tex]
Group the similar terms and arrange them in order,
[tex]=(b+c)^2 \times (a^4+2a^3b+2a^3c+a^2b^2+4a^2cb+c^2a^2+2c^2ab+2acb^2) -a^2 \times (b^4+2b^3a+b^2a^2-b^2c^2) +a^2 \times (-c^4-2c^3a+b^2c^2-c^2a^2)[/tex]
Again we have to expand it and then we get,
[tex]= a^4b^2+2a^4bc+a^4c^2+c^4a^2+2c^4ab+2a^3b^3+6a^3b^2c+6a^3bc^2+2a^3c^3+6c^3ab^2+a^2b^4+6a^2b^3c+10a^2b^2c^2+6a^2c^3b+6c^2ab^3+2acb^4 -b^4a^2-2b^3a^3-b^2a^4+b^2c^2a^2 -c^4a^2-2c^3a^3+b^2c^2a^2-c^2a^4[/tex]
After the simplification, the resulting determinant is
[tex]=2a^4bc+2c^4ab+6a^3b^2c+6a^3bc^2+6c^3ab^2+6a^2b^3c+12a^2b^2c^2+6a^2c^3b+6c^2ab^3+2acb^4[/tex]
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If (1 - a) is decreased, the width of a confidence interval isA. Decreased B. Same C. Increased D. Constant
Answers
We have to find how the interval (1-α) affects the width of the confidence interval.
The interval (1-α) represents the confidence required for the interval.
The greater the confidence required, the wider will be the interval.
This means also that when we decrease the confidence required, the interval width decrease too, as we are less strict with the number of sample means that have to fall within that interval.
Then, when (1-α) decreases, the width of the confidence interval also decreases.
Answer: A. Decreased,
A survey asked a group of adults and youths if they prefer reading books printed on paper or electronic books.
Book Preference
Print Electronic
Youths 34 40
Adults 38 28
What percent of the youths surveyed prefer reading electronic books? Round your answer to the nearest tenth of a percent.
Answers
If a survey asked a group of adults and youths if they prefer reading books printed on paper or electronic books. The percent of the youths surveyed prefer reading electronic books is: 54%
How to determine the percentage?Given data:
Youth book preference
Print = 34
Electronic = 40
Now let determine the percentage using this formula
Total = Print + Electronic book
Total = 34 +40
Total = 74
Now let determine the percentage of youth that preferred reading electronic book which is calculated as :
Percentage = 40 / 74
Percentage = 0.54 × 100
Percentage = 54 %
Therefore we can conclude that 54% like to read electronic book.
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Each person gets 3 scoops of ice cream. Is this relationship between the number of people and the number of scoops proportional?
Answers
Yes, the number of scoops proportional.
Define Proportional
A linear relationship between two amounts or variables is indicated by proportionality. Both quantities increase in size when one doubles, and both decrease in size when one drops to a tenth of its original value.
Hence, It is proportional. This is because as the number of people increases, the number of scoops also increase.
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Combine the like terms to create a equivalent expression -4r - 2r + 5
Answers
After combining the like terms of the given expression -4r -2r + 5 the equivalent expression is -6r +5.
As given in the question,
Given expression is equal to :
-4r -2r + 5
Now combine the like terms to get the equivalent expression we have,
Like terms of the given expression -4r -2r + 5 are -4r and -2r
( -4r -2r) +5
= -r (4+2) +5
= -6r +5
Equivalent expression of the given expression -4r -2r + 5 is -6r +5.
Therefore, after combining the like terms of the given expression -4r -2r + 5 the equivalent expression is -6r +5.
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If you vertically compress the absolute value parent function, f(x) = Ixl, by afactor of 4, what is the equation of the new function?A. g(x)=xB. g(x) = 4xC. g(x) = 14x1D. g(x) = |x-41
Answers
Solution:
Given the absolute value parent function below
[tex]f(x)=|x|[/tex]If the function is vertically compressed by a factor of 4, the function becomes
[tex]g(x)=\frac{1}{4}f(x)[/tex]Where
[tex]\begin{gathered} f(x)=|x| \\ g(x)=\frac{1}{4}|x| \end{gathered}[/tex]Hence, the answer is
[tex]g(x)=\frac{1}{4}\lvert x\rvert[/tex]Option A
What should be done to 5x^2 +15x in order to create a perfect square?
Answers
Answer:
To create a perfect square of given expression,
[tex]5x^2+15x[/tex]On solving the above expression we get,
[tex]=5(x^2+3x)[/tex]we have that,
[tex](x+a)^2=x^2+2ax+a^2[/tex]To create a perfect square: add ( half the coefficient of the x- term )²
Coefficient of x term is 3
half the coefficient of the x- term is 1.5
( half the coefficient of the x- term )² is 2.25
Add 2.25 to the quadratic expression inside the bracket, we get,
[tex]=5(x^2+3x+2.25)[/tex]In general, we adding 11.25 (that is, 2.25x5=11.25) to the given expression.
we get,
[tex]=5(x+1.5)^2[/tex]Multiply 5 to the above equation, we get
[tex]=5^2(x+1.5)^2[/tex][tex]=(5x+7.5)^2[/tex]Based on the above calculation, we adding 11.25 and multiplying the expression by 5 in order to create a perfect square.
Adding 11.25 and multiplying the expression by 5 in order to create a perfect square.
Which equation has no solution?
Answers
Answer:
1.)|4x-2|=-6
This eguation has not solution.
Answer:
the first one; absolute value cannot be negative
Step-by-step explanation:
|4x-2| = -6
add 2
|4x| = -4
divide 4 on both sides
x = -1
|4x-2| = 6
repeat the same steps
x = 2
A box, in the shape of a square pyramid, has a base side of 9 in. and a height of 15 in. What is the approximate volume of the box when it is 75% full? (Use V=
'Bh, where B is the area
of the base, and h is the height.)
Answers
The approximate volume of the pyramid when it's 75% full is 303.75 inches³.
How to find volume of a pyramid?The volume of a square base pyramid can be represented as follows:
volume of the square base pyramid = 1 / 3 Bh
where
B = base areah = height of the pyramidTherefore, the square bas pyramid has a base side of 9 inches and height of 15 inches. Let's find the volume when it's 75% full.
B = 9² = 81 inches²
h = 15 inches
Therefore,
volume of the square base pyramid = 1 / 3 × 81 × 15
volume of the square base pyramid = 81 × 5
volume of the square base pyramid = 405 inches³
Therefore, when it's 75% full
volume = 75% of 405
volume = 75 / 100 × 405
volume = 30375 / 100
volume = 303.75 inches³
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2. WRITING Describe the relationship between the angle measures of
angles, supplementary angles, vertical angles, and
complementary
linear pairs.
Please help
Answers
Answer:
yes
Step-by-step explanation:
what are the coordinates of the point on the directed line segment from (-7,-2) to (-2,8) that partitions the segment into a ratio of 3:2
Answers
The coordinates of the point on the directed line segment are (-4, 4).
What is partitions of the segment?
Finding a position that is an equal distance from A and b equal distance from B is necessary for partitioning a line segment, AB, into a ratio of a/b.
Trying to find the coordinates of point that splits the line between (-7, -2) to (-2, 8) at a ratio of 3:2.
Since the ratio is 3:2 we are going o find the point that is 3/5 of the distance from (-7, -2) to (-2, 8).
For the x coordinate, find the distance between x coordinates (-2-(-7)) = 5.
Take 3/5 of 5 equals to 3 and add that to the first x coordinate (-7) to get the x - coordinate of interest -4.
For the y - coordinate, find the distance between y coordinates (8-(-2)) = 10.
Take 3/5 of 10 equals to 6 and add that to to the first y coordinate (-2) to get the y coordinate of interest 4.
The coordinates of the point on the directed line segment from (-7, -2) to (-2, 8) that partitions the segment into a ratio of 3:2 are (-4, 4).
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For which values of A, B, and C will Ax + By = C be a horizontal line through the point (4, -9)?
Answers
Answer:
Step-by-step explanation:
no
A particle travels along the x-axis such that its position at time t is given by the function x(t) = 2t2 + t. What is the average speed of this particle over the interval 2 ≤ t ≤ 10?
4
25
32
200
Answers
The average speed of this particle over the interval 2 ≤ t ≤ 10 is 25 , the correct option is (b)25 .
In the question ,
it is given that
the position of the particle that travels along the x-axis at time t is given by the function
x(t)=2t²+t
the average speed of the particle can be calculated by using the formula
average speed = (change is distance)/(change in time)
particle position at t=2
x(2) = 2(2)²+2 = 2*4+2 = 10
particle position at t=10
x(10) = 2(10)²+(10)
= 2*100+10
= 200+10
= 210
So, change in distance = 210-10= 200
change in time = 10-2 = 8
Putting the values in the average speed formula we get
average speed = 200/8
= 100/4
=25
Therefore , the average speed of this particle over the interval 2 ≤ t ≤ 10 is 25 , the correct option is (b)25 .
The given question is incomplete , the complete question is
A particle travels along the x-axis such that its position at time t is given by the function x(t)=2t²+t . What is the average speed of this particle over the interval 2 ≤ t ≤ 10?
(a) 4
(b) 25
(c) 32
(d) 200
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Graph the linear equation. Help 50 points!!
Answers
First, let's edit the equation of the given line.
[tex]2y=2+3x[/tex][tex]y=\frac{2+3x}{2}[/tex]We were asked to identify three points. Let us give the value of [tex]x[/tex] as [tex]2,4[/tex] and [tex]6[/tex] respectively.
For [tex]x=2, y=4[/tex]For [tex]x=4, y=7[/tex]For [tex]x=6, y=10[/tex]Why did we give consecutive even numbers? Because our unknown is preceded by an odd number. We applied this to find the integer in the rational expression.
Finally, you will mark the three points we found on the coordinate plane. In the photo below, I have marked them for you.
-23x^7 + x^9 -6x^3 + 10 + 2x^2
Answers
The polynomial is x⁹ - 23x⁷ - 6x³ + 2x² + 10 in the standard form, the degree of the polynomial is nine, and its leading coefficient is 1.
What is a polynomial?A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.
The polynomial below which is given in the question
-23x⁷ + x⁹ -6x³ + 10 + 2x²
To determine the polynomial in the standard form.
⇒ -23x⁷ + x⁹ -6x³ + 10 + 2x²
Rearrange the terms in the descending order of the degree of variables
⇒ x⁹ - 23x⁷ - 6x³ + 2x² + 10
This is the polynomial in the standard form
Here the degree of the polynomial is nine because nine is the highest degree in the above expression and its leading coefficient is 1.
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The question seems to be incomplete the correct question would be:
Write the polynomial in the standard form, and then identify the degree and leading coefficient
-23x⁷ + x⁹ -6x³ + 10 + 2x²
shelly sews a square blanket that has an area of 144 square feet. it has 36 square blocks, each the same size. what is the approximate length of each side of a block? (1 point)
Answers
The side of the square of each block = 2 feet
Given,
Shelly sews a square blanket that has an area of 144 square feet.
and, it has 36 square blocks, each the same size.
To find the approximate length of each side of a block
Now, According to the question:
36 square blocks of same size. We need to find the area of each square block. so we divide = area / square blocks
= 144/ 36
= 4
The area of each square = 4 square feet
We know that
Area of square = side ^2
Side ^2 = 4
side = [tex]\sqrt{4}[/tex]
Side = 2
Hence, The side of the square of each block = 2 feet
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Describe how the equations for an ellipse, circle, hyperbola and parabola differ from one another. Include an example of each in your description.
Answers
See explanation below
Explanation:An ellipse has a standard equation formula written as:
[tex]\frac{(x^{}-h)^2}{a^2}+^{}\frac{(y-k)^2}{b^2}\text{ = 1}[/tex]When the sign between the x^2 and y^2 terms is positive, then it is a ellipse
[tex]\begin{gathered} \text{example of an ellipse:} \\ \frac{(x-3)^2}{9}\text{ + }\frac{(y\text{ - 8})^2}{25}\text{ = 1} \end{gathered}[/tex]An hyperbola has a standard equation written as:
[tex]\frac{(x^{}-h)^2}{a^2}-^{}\frac{(y-k)^2}{b^2}\text{ = 1}[/tex]when the sign between the parenthesis of x^2 and y^2 terms is minus, then it is an hyperbola
[tex]\begin{gathered} \text{example of a hyperbola:} \\ \frac{x^2}{64}\text{ - }\frac{y\text{ }^2}{49}\text{ = 1} \end{gathered}[/tex]A circle has a general formula written as:
[tex]\begin{gathered} (x-h)^2+(y-k)^2=r^2 \\ \text{where vertex = (h, k)} \\ r\text{ = radius} \end{gathered}[/tex]The terms x^2 and y^2 are not divided by a constant. Also the left side of the equation represents the square of the radius
[tex]\begin{gathered} An\text{ example of a circle} \\ (x-1)^2+(y-3)^2\text{ = }10 \end{gathered}[/tex]Parabola has a vertex form of equation written as:
[tex]\begin{gathered} y=a(x-h)^2+\text{ k} \\ \text{where a = constant} \end{gathered}[/tex][tex]\begin{gathered} An\text{ example:} \\ y\text{ = 2(x - 1})^2\text{ + }3 \end{gathered}[/tex]Here, we only have term x^2, no y^2. y has an exponent of 1. Also a constant of a
(5+2) (5-5)=0 is it a solution .
Answers
Answer:
5+5 5-5=0 is not a solution
Step-by-step explanation:
select all the equations that have the same solution as the equation 3x-12=24
Answers
The equation that have same solution to 3x-12=24 is 4x - 30 = 18.
What is an equation?A mathematical equation is the statement that illustrates that the variables given. In this case, two or more components are taken into consideration to describe the scenario.
The equation given is illustrated as:
3x - 12 = 24
Collect like terms
3x = 24 + 12
3x = 36
Divide through by 3.
3x / 3 = 36 / 3
x = 12
In this case, 4x - 30 = 18 will be:
4x - 30 = 18.
Collect like terms
4x = 18 + 30.
4x = 48
Divide
x = 48/4
x = 12
Therefore, 4x - 30 = 18 has same solution.
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I WILL GIVE YOU BRAINLIST Show your work
11/2 divide by 3/4
Answers
So 11/2 x 4/3
11x4 = 44 and 2x3 = 6 which is 44/6
44/6 can be simplified to 22/3
The answer is 22/3
A line passes through (12,-4) and (-6,10). Find the y-intercept, b, of the line.
Answers
The y-intercept of the line passes through (12,-4) and (-6,10) is 32/6
Let (x1, y1) = (12, -4)
and (x2, y2) = (-6, 10)
Using the formula of the two-point form of equation of line,
(y - y1)/(y2 - y1) = (x - x1)/(x2 - x1)
(y + 4)/(10 + 4) = (x - 12)/(-6 - 12)
(y + 4)/14 = (x - 12)/(-18)
-18y -72= 14x - 168
-18y = 14x - 168 + 72
-18y = 14x - 96
y = -(14/18)x + 96/18
y = -7/9 x + 32/6
Comparing with slope-intercept form of line y = mx + b
y-intercept(b) = 32/6
Therefore, the y-intercept of the line passes through (12,-4) and (-6,10) is 32/6
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4x^2-5x-1. find the roots
Answers
Answer:
Please comment if it is wrong.
Find the slope of the line.
slope =
11
rise
run
5
11
40
30
20
10
O
2
4
6
8
G
G
Answers
to get the slope of any straight line, we simply need two points off of it, let's use the ones from the picture below.
[tex](\stackrel{x_1}{0}~,~\stackrel{y_1}{0})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{20}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{20}-\stackrel{y1}{0}}}{\underset{run} {\underset{x_2}{5}-\underset{x_1}{0}}} \implies \cfrac{ 20 }{ 5 } \implies \text{\LARGE 4}[/tex]
When an integer is subtracted from 8 times the next consecutive integer, the difference is -20. Find the value of the lesser integer.
Answers
Answer: -4
Step-by-step explanation:
Let the integer be x.
[tex]8(x+1)-x=-20\\\\8x+8-x=-20\\\\7x+8=-20\\\\7x=-28\\\\x=-4[/tex]
So, the integers are -4 and -3.
A 21-foot bean is to be cut into three pieces so that the second and third piece are each 3 times the length of the first piece. If x represents the length of the first piece, find the length of each piece
Answers
Answer: 3, 9, and 9
Step-by-step explanation:
X+3x+3x=217x=21x=33, 9, 9=21
Two office supply stores sell their brand of copy paper by the pound. One company offers a flat rateshipping charge and the other offers free shipping.Use the graph provided to construct a linear system to model this situation. Solve the system todetermine the amount of copy paper for which the cost is the same at both stores. Use the graph to verifythat your answer is reasonable.220200(450,202.51180160(400,156)1401Cost ($)1201008060(0.56)4020(0,0)Amount of copy paper (lb)-1 (x)-9 (X)50100150200250300350150 00The y-intercept, b, of f(x) isand the slope, m, offix) is
Answers
Given the graph in the attached image.
The red line represents f(x) and the blue line represents g(x);
From the graph;
The intercept, b, of f(x) is
[tex]b=56[/tex]and the slope, m, of f(x) is;
[tex]\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1}=\frac{156-56}{400-0} \\ m=\frac{100}{400} \\ m=\frac{1}{4} \\ m=0.25 \end{gathered}[/tex]So, f(x) is;
[tex]\begin{gathered} f(x)=mx+b \\ f\mleft(x\mright)=0.25x+56 \end{gathered}[/tex]For g(x)
The y-intercept, b, of g(x) is;
[tex]b=0[/tex]and the slope, m, of g(x) is;
[tex]\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1}=\frac{202.5-0}{450-0} \\ m=\frac{202.5}{450} \\ m=0.45 \end{gathered}[/tex]So, g(x) is;
[tex]\begin{gathered} g(x)=mx+b \\ g(x)=0.45x+0 \\ g(x)=0.45x \end{gathered}[/tex]To derive the solution, let us equate the two equations;
[tex]undefined[/tex]A jet ski rental charges a flat rate of $75, plus an additional $10 per hour. You only have $200 to spend. How many hours can you rent the jet ski?
PLS HELP ME
Answers
Answer:
12.5 hours
Step-by-step explanation:
The flat rate is the base, in which no matter how long you rent it for, they'll still charge you that much. You have 200 dollars, and negative 75 is 125 dollars, which you can spend on the hours. Assuming you can rent the jet ski for half an hour, you can divide 125 by 10 for the amount of hours, and the answer is 12.5 hours. However, if you can't rent the jet skis for half an hour, the answer is 12 hours.
the difference of t and five multiplied by six is four
Answers
The expression of the mathematical statement given as the difference of t and five multiplied by six is four is 6(t - 5) = 4
How to express the mathematical statement as an expression?From the question, the mathematical statement is given as
the difference of t and five multiplied by six is four
The difference of numbers means that we subtract the numbers
i.e. difference means subtraction
So, we have
the difference of t and five multiplied by six is four ⇒ (t - five) multiplied by six is four
The multiplication of numbers means that we take the product of the numbers
i.e. multiply means product
So, we have
the difference of t and five multiplied by six is four ⇒ (t - five) x six is four
Lastly, we have
(t - five) x six = four
Express as numbers
(t - 5) x 6 = 4
This becomes
6(t - 5) = 4
Hence, the expression represented by the statement is 6(t - 5) = 4
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Please help me with this
Answers
Answer:
1 and 3 makes linear pair
1 and 4 vertically opposite angle
1 and 5 are corresponding angle
1 and 8 alternate exterior angle
HELP!!!
An area model with 12 shaded parts and 6 unshaded parts. The shaded part is labeled two-thirds. Adela divided Two-thirds of a cup of bird food equally among 6 birds. How much food did she give each bird? The dividend is The divisor is . The division expreesion is Rewrite the division expression to get Each bird receives -cup of bird food.
Answers
Each bird would receive 1/9 cup of bird food.
What is the Quotient?A quotient is defined as the outcome of dividing an integer by any divisor that can be said to be a quotient. The dividend contains the divisor a specific number of times.
We have been given an area model with 12 shaded parts and 6 unshaded parts. The shaded part is labeled two-thirds. Adela divided Two-thirds of a cup of bird food equally among 6 birds.
The dividend would be
⇒ 2/3
The divisor would be
⇒ 6
The division expression would be
⇒ 2/3
Divided by 6
Rewrite the division expression to get
⇒ 2/3 × 1/6
⇒ 2 / 18
⇒ 1/9
Therefore, each bird would receive 1/9 cup of bird food.
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