The fact that the points are located along a straight path does not prove that the relationship is proportional.
what is graph ?A graph is a graphic representation of a collection of data or a mathematical function in mathematics. It consists of several nodes or vertices linked by arcs or edges. Graphs are frequently used to display data in a manner that is simple to comprehend and interpret. They can be used to demonstrate mathematical functions or equations as well as relationships between various variables and patterns or trends in data. Line graphs, bar graphs, scatter plots, pie charts, and other graphs come in a wide variety. Depending on the nature of the data being depicted and the insights that need to be communicated, each type of graph is used for a specific reason.
given
The fact that the points are located along a straight path does not prove that the relationship is proportional. The connection is proportional, though, if y rises by a constant multiple of x every time.
Since y does not have to increase by a fixed constant in order for a relationship to be proportional, the claim that "It must be proportional because each time y increases by 3, x remains the same" is untrue.
Since proportional relationships can have non-zero y-intercepts, the claim that it cannot be proportional because a straight line through the locations would not pass through the origin is false as well.
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For the functionf(x)=(8−2x)^2, find f−1. Determine whetherf−1is a function.f−1(x)=±28+x;f−1is not a function.f−1(x)=28±x;f−1is not a function.f−1(x)=±28+x;f−1is a function.f−1(x)=28±x,f−1is a function.
The correct answer is f^-1(x) = (8-√x)/2; f^-1 is a function.
To find the inverse of the function f(x) = (8-2x)^2, we need to switch the x and y variables and solve for y. This will give us f^-1(x).
So, we start with:
x = (8-2y)^2
Next, we take the square root of both sides:
√x = 8-2y
Then, we isolate the y variable:
2y = 8-√x
y = (8-√x)/2
So, the inverse of the function is:
f^-1(x) = (8-√x)/2
Now, we need to determine whether f^-1(x) is a function. To do this, we can use the horizontal line test. If a horizontal line intersects the graph of f^-1(x) at more than one point, then f^-1(x) is not a function.
In this case, a horizontal line will only intersect the graph of f^-1(x) at one point, so f^-1(x) is a function.
Therefore, the correct answer is f^-1(x) = (8-√x)/2; f^-1 is a function.
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Find the standard matrix for the stated composition of linear
operators on R2.
A rotation of 270∘ (counterclockwise), followed by a
reflection about the line y = x.
The standard matrix for the stated composition of linear operators on R2 is:
The standard matrix for the stated composition of linear operators on R2 can be found by multiplying the matrices for each individual operation.
First, let's find the matrix for a rotation of 270° counterclockwise:
2. Rumors spread through a population in a process known as social diffusion. Social
diffusion can be modeled by , where is the number of people who have heard
the rumor after days. Suppose four friends start a rumor and two weeks later 136,150
people have heard the rumor.
A. Graph the growth of the rumor during the first two weeks.
B. How many people heard the rumor after 10 days?
C. How long will it take for one million people to have heard the rumor?
100 Points. Please Help. Due in Two Hours.
2. The given quadratic equation is in the general form:
ax² + bx + c = 0
therefore:
a = 2
b = -4
c = -3
The quadratic formula is thus:
[tex]x=\frac{-b(+-)\sqrt{b^2-4ac} }{2a}[/tex]
Substituting the values found for a, b, and c:
[tex]x=\frac{-(-4)+\sqrt{(-4)^2-4(2)(-3)} }{2(2)}[/tex] and [tex]x=\frac{-(-4)-\sqrt{(-4)^2-4(2)(-3)} }{2(2)}[/tex]
Therefore x = 2.58, x = -0.58
3. Using the same method as above, first, bring all values to one side, leaving the RHS = 0
a = 1
b = 2
c = -1
The quadratic formula is thus:
[tex]x=\frac{-b(+-)\sqrt{b^2-4ac} }{2a}[/tex]
Substituting the values found for a, b, and c:
[tex]x=\frac{-(2)+\sqrt{(2)^2-4(1)(-1)} }{2(1)}[/tex] and [tex]x=\frac{-(2)-\sqrt{(2)^2-4(1)(-1)} }{2(1)}[/tex]
Therefore, x = 0.41, x = -2.41
[tex]2 {x}^{2} - 4x - 3 = 0[/tex]
A Here ,
[tex]\boxed{a = 2 }\\\boxed{b = - 4} \\ \boxed{c = - 3}[/tex]
B Filling in the values of a , b and c in the Quadratic formula below , we get
[tex]x = \frac{- (b)\pm \sqrt{( {b}^{2}) - 4(a)(c) } }{2(a)} \\ [/tex]
C Simplifying each section , we get
[tex]x = \frac{ - ( - 4) + \sqrt{( { - 4}^{2} ) - 4(2)( - 3)} }{2 \times 2} [/tex]
or
[tex]x = \frac{ - ( - 4) - \sqrt{ {( - 4})^{2} - 4(2)( - 3) } }{2 \times 2} [/tex]
D Simplifying answers from Part C , we get
[tex]\boxed{x = \frac{2 + \sqrt{10} }{2}} \: \: \: \: or \: \: \: \: \boxed{ x = \frac{2 - \sqrt{10} }{2} } \\ [/tex]
Therefore ,
[tex]\boxed{x = 2.58} \: \: \: \: and \: \: \: \: \boxed{x = - 0.58}[/tex]
Thus , option A. is correct!_____________________________________
[tex] {x}^{2} + 2x = 1 \\ \implies \: {x}^{2} + 2x - 1 = 0[/tex]
A Here ,
[tex]\boxed{a = 1} \\ \boxed{b = 2} \\ \boxed{c = - 1}[/tex]
B Filling in the values of a , b and c in the Quadratic formula below , we get
[tex]x = \frac{- (b)\pm \sqrt{( {b}^{2}) - 4(a)(c) } }{2(a)} \\ [/tex]
C Simplifying each section , we get
[tex]x = \frac{ - (2) + \sqrt{ ({2}^{2} ) - 4(1)( - 1)} }{2 \times 1} [/tex]
or
[tex]x = \frac{ - (2) - \sqrt{( {2}^{2}) - 4(1)( - 1) } }{2 \times 1} [/tex]
D Simplifying answers from Part C , we get
[tex]\boxed{x = - 1 + \sqrt{2} } \: \: \: \: or \: \: \: \: \boxed{x = - 1 - \sqrt{2} }[/tex]
Therefore
[tex]\boxed{x = 0.41} \: \: \: \: or \: \: \: \: \boxed{x = -2.41 }[/tex]
Thus , option D is correct.hope helpful! :)
The difference between the digits of a two-digit number is 1. The number itself is one more than five times the sum of its digits. If the unit digit is greater than the tens digit, find the number
Answer:
The number is → 56
Step-by-step explanation:
tens digit [tex]\Rightarrow x[/tex]
unit digit [tex]\Rightarrow y[/tex]
"The difference between the digits of a two-digit number is 1...", " ...the unit digit is greater than the tens digit..."
[tex]y-x=1 \qquad \textbf{ec.1}[/tex]
"The number itself is one more (unit) than five times the sum of its digits..."
[tex]10x+y=5(x+y)+1\\ 10x+y= 5x + 5y+1\\5x= 4y+1 \qquad \textbf{ec.2}[/tex]
we clear "y" in equation 1:
[tex]y=1+x \qquad \textbf{ec.3}[/tex]
then we substitute in equation 2:
[tex]5x=4(1+x)+1\\5x=5+4x\\\boxed{x=5}[/tex]
Finally, we substitute in equation 3:
[tex]y=1+5\\\boxed{y=6}[/tex]
With this we have solved the exercise.
[tex]\text{-B$\mathfrak{randon}$VN}[/tex]
47. What is the difference in elevation of a mountain 22,834 feet
tall and an ocean basin floor at -16,896 feet?
Answer: 5,948 feet
Step-by-step explanation:
All you really need to do in this problem is subtract 22,834 - 16,896 as shown below:
22,834 - 16,836 = 5,948 feet
HELP THIS IS DUE TOMMOROW PLEASE ANSWER THESE TWO USE ANY STRATEGIE
Answer:
for the first, the answers are 1/2, 1, 2, 4, and 8. for the second, 22[tex]\frac{1}{2}[/tex] sq. km.
Step-by-step explanation:
1/4 times 2 is 1/2, times 2 is 1, times 2 is 2, times two is 4, time 2 is 8.
for the second one, area = base times height. 6 3/4 times 3 1/3 is 22 1/2 km squared.
A right circular cylinder has the dimensions show below.
r = 17.2 yd
h = 45.3 yd
What is the volume of the cylinder? Use 3.14 for pie.
Round to the nearest tenth and include correct units.
The volume of the cylinder is approximately 40,107.6 cubic yards.
What is the volume of the cylinder?
The formula for the volume of a right circular cylinder is:
[tex]V = \pi r^2h[/tex]
The formula for the volume of a right circular cylinder is:
[tex]V = \pi r^2h[/tex]
Substituting the given values:
V = 3.14 x 17.2² x 45.3
V = 3.14 x 296.84 x 45.3
V = 40,107.6152 cubic yards
Rounding to the nearest tenth:
V ≈ 40,107.6 cubic yards
Therefore, the volume of the cylinder is approximately 40,107.6 cubic yards.
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Answer: 42080.87328 or 42,080.9 rounded to the nearest tenth
Step-by-step explanation:
V=πr2
V= 3.14 x 17.2 x 45.3
V= 3.14 x 17.2 squared x 45.3
= 17.2 squared is 295.84
V= 3.14 x 295.84 x 45.3
V= 42,080.87328
round it to nearest tenth and get 42,080.9 yd
a.) State the general exponential growth equation.
b.) State the general exponential decay equation.
a. The general exponential growth equation is given by: y = abˣ
b. The general exponential decay equation is given by: [tex]y = a (1 - r)^x[/tex]
Exponential growth:Exponential growth is a type of growth pattern in which a quantity grows at an increasing rate proportional to its current value. This means that the larger the quantity, the faster it grows.
a. The general exponential growth equation is given by:
y = abˣ
Where y is the final value, 'a' is the initial value, b is the growth factor or base, and x is the time or number of periods.
Exponential decay:Exponential decay is a type of decay pattern in which a quantity decreases at a decreasing rate proportional to its current value. This means that the larger the quantity, the slower it decays.
b. The general exponential decay equation is given by:
[tex]y = a (1 - r)^x[/tex]
Where y is the final value, a is the initial value, r is the decay rate, and x is the time or number of periods
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Find a basis for span((1,−1,2,2),(2,2,1,1),(2,−1,−1,0),(4,2,−5,−3))
The basis for span((1,−1,2,2),(2,2,1,1),(2,−1,−1,0),(4,2,−5,−3)) is {(1,−1,2,2), (2,2,1,1), (2,−1,−1,0), (4,2,−5,−3)}.
A basis for a vector space is a set of linearly independent vectors that span the vector space. In this case, we need to find a basis for the vector space spanned by the given vectors (1,−1,2,2), (2,2,1,1), (2,−1,−1,0), and (4,2,−5,−3).
To find a basis, we can use the row reduction method. First, we write the given vectors as rows of a matrix:
```
1 -1 2 2
2 2 1 1
2 -1 -1 0
4 2 -5 -3
```
Next, we use row operations to reduce the matrix to row echelon form:
```
1 -1 2 2
0 4 -3 -3
0 0 -5 -4
0 0 0 2
```
Now, we can see that the first, second, third, and fourth rows are all linearly independent (since they all have a leading 1 in a different column). Therefore, the original vectors (1,−1,2,2), (2,2,1,1), (2,−1,−1,0), and (4,2,−5,−3) form a basis for the vector space.
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Find the remainder. r when a is divided by b. Write th numerical value only Given: a=-233,b=11. Answer
The remainder when -233 is divided by 11 is 9. To find the remainder when a is divided by b, we can use the formula:
r = a % b
Where % is the modulo operator, which gives the remainder when one number is divided by another.
In this case, we have a = -233 and b = 11. Plugging these values into the formula, we get:
r = -233 % 11
Using a calculator or doing the division by hand, we find that the remainder is -2. However, since we are looking for the positive remainder, we can add b to this value to get the correct answer:
r = -2 + 11 = 9
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A 12-sided solid has equal-sized faces numbered 1 to 12.
a. Find P(number greater than 8).
b. Find P(number less than 6).
c. Is the solid fair? Explain.
a. P(number greater than 8) = %
(Type an integer or decimal rounded to the nearest tenth as needed.)
h
a)P(number greater than 8) = 4/12 = 1/3 ≈ 0.3
b)P(number less than 6) = 5/12 ≈ 0.4
c)If each face has an equal chance of rolling, the solid is fair. The solid is fair since the faces are numbered sequentially from 1 to 12 and each face has an equal chance of being rolled.
what is decimal?One of the number types in algebra that has a whole integer and a fractional portion separated by a decimal point is a decimal. The decimal point is the dot that appears between the parts of a whole number and a fraction. An example of a decimal number is 34.5.
from the question:
a) A solid has 12 equal-sized faces with numbers ranging from 1 to 12. The chance of getting a number larger than 8 is calculated by dividing the total number of faces by the number of faces with numbers greater than 8. Given that there are 4 faces (12 - 8) with numbers greater than 8, the likelihood of drawing one is:
P(number more than 8) = 4/12 = 1/3 = 0.35
b) Similarly, the chance of receiving a number less than 6 is calculated by dividing the total number of faces by the number of faces that have numbers less than 6. Given that there are 6 - 1 = 5 faces with numbers lower than 6, the likelihood of drawing one is as follows:
P(less than six) = 5/12= 0.4
c) If each face has an equal chance of rolling, the solid is fair. The solid is fair since the faces are numbered sequentially from 1 to 12 and each face has an equal chance of being rolled.
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Math part 4 question 3
The graph is symmetric about the y-axis, so its a even function.
Define the even and odd function?The function is even if it is exactly what it was that originally started with (it is, if f (-x) = f (x), with all the signs remaining the same. The function is odd if it is exactly the opposite of just what it started with (it is, if (−x) = −f (x), with all the signs switched.EVEN function:
This is "symmetric around the y-axis," meaning that what ever the graph is now doing with one side of such y-axis is replicated on the other, if I graph it.A distinguishing feature of even functions is this duplication about the y-axis.ODD function:
This is "symmetric around the origin," as can be shown if I graph it; to do this, I would start at a point on the graph that is across one side of the y-axis, draw a line through the origin, then extend that same line for the opposite side of the y-axis.The peculiar symmetry of odd functions is well known.Thus, the graph is symmetric about the y-axis, so its a even function.
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(a) Let \( a^{1}=\left[\begin{array}{l}1 \\ 1 \\ 2 \\ 1\end{array}\right], a^{2}=\left[\begin{array}{r}-1 \\ 2 \\ 0 \\ -2\end{array}\right] \), and \( a^{3}=\left[\begin{array}{l}1 \\ 4 \\ 4 \\ 0\end{
end{bmatrix} = \begin{bmatrix} 1 \\ \frac{1}{5} \\ 1 \end{bmatrix}.
(a) Let $a^1 = \begin{bmatrix} 1 \\ 1 \\ 2 \\ 1 \end{bmatrix}, a^2 = \begin{bmatrix} -1 \\ 2 \\ 0 \\ -2 \end{bmatrix},$ and $a^3 = \begin{bmatrix} 1 \\ 4 \\ 4 \\ 0 \end{bmatrix}.$ Write the matrix $A = \begin{bmatrix} a^1 & a^2 & a^3 \end{bmatrix}$ in the form $A = QR$ by using the Gram-Schmidt process. (b) Use the QR factorization of $A$ in part (a) to solve the equation $Ax = b,$ where $b = \begin{bmatrix} 3 \\ 1 \\ 2 \\ 1 \end{bmatrix}.$The Gram-Schmidt algorithm is a numerical method to produce orthonormal basis of a subspace in Hilbert space that spans the same space, which makes the basis more convenient to work with. As for the first part of the question, let us begin by applying the Gram-Schmidt algorithm to $a^1, a^2, a^3.$ We begin by defining $q_1 = a^1 / \|a^1\|.$ Hence,$$q_1 = \frac{1}{3}\begin{bmatrix} 1 \\ 1 \\ 2 \\ 1 \end{bmatrix} = \begin{bmatrix} 1/3 \\ 1/3 \\ 2/3 \\ 1/3 \end{bmatrix}.$$Next, we define $v_2 = a^2 - \langle q_1, a^2 \rangle q_1.$ Therefore,$$v_2 = a^2 - \frac{-1}{3}(1/3)q_1 = \begin{bmatrix} -7/9 \\ 8/9 \\ -2/9 \\ -4/9 \end{bmatrix}.$$Now, we can define $q_2 = v_2 / \|v_2\|.$ Thus,$$q_2 = \frac{1}{3}\begin{bmatrix} -7 \\ 8 \\ -2 \\ -4 \end{bmatrix}.$$Finally, we define $v_3 = a^3 - \langle q_1, a^3 \rangle q_1 - \langle q_2, a^3 \rangle q_2.$ Then,$$v_3 = a^3 - \frac{5}{9}q_1 - \frac{7}{27}q_2 = \begin{bmatrix} -1/27 \\ 5/9 \\ 22/27 \\ -5/27 \end{bmatrix}.$$Lastly, we can define $q_3 = v_3 / \|v_3\|,$ so$$q_3 = \frac{1}{3}\begin{bmatrix} -1 \\ 5 \\ 22 \\ -5 \end{bmatrix}.$$Now, we can write $A = QR$ as $$\begin{bmatrix} a^1 & a^2 & a^3 \end{bmatrix} = \begin{bmatrix} q_1 & q_2 & q_3 \end{bmatrix} \begin{bmatrix} r_{11} & r_{12} & r_{13} \\ 0 & r_{22} & r_{23} \\ 0 & 0 & r_{33} \end{bmatrix}.$$We can obtain the entries of the $R$ matrix by calculating the inner product of each $q_i$ with $a^j.$ Thus,$$r_{11} = \|a^1\| = \sqrt{7},$$$$r_{12} = \langle q_1, a^2 \rangle = \frac{-1}{3}\sqrt{7},$$$$r_{13} = \langle q_1, a^3 \rangle = \frac{5}{9}\sqrt{7},$$$$r_{22} = \|v_2\| = \frac{5}{3}\sqrt{2},$$$$r_{23} = \langle q_2, a^3 \rangle = \frac{-7}{9}\sqrt{2},$$$$r_{33} = \|v_3\| = \frac{2}{3}\sqrt{6}.$$Therefore,$$\begin{bmatrix} a^1 & a^2 & a^3 \end{bmatrix} = \begin{bmatrix} q_1 & q_2 & q_3 \end{bmatrix} \begin{bmatrix} \sqrt{7} & -\frac{1}{3}\sqrt{7} & \frac{5}{9}\sqrt{7} \\ 0 & \frac{5}{3}\sqrt{2} & -\frac{7}{9}\sqrt{2} \\ 0 & 0 & \frac{2}{3}\sqrt{6} \end{bmatrix}.$$Now, let us solve the equation $Ax = b$ by using the QR factorization of $A.$ We can write $Ax = QRx = b.$ Since $Q$ is orthogonal, we can multiply both sides of the equation by $Q^T$ to obtain $Rx = Q^Tb.$ Note that $Q^Tb$ is easy to compute since $Q^T$ is just the matrix with the $q_i$'s as rows. Thus,$$\begin{bmatrix} \sqrt{7} & -\frac{1}{3}\sqrt{7} & \frac{5}{9}\sqrt{7} \\ 0 & \frac{5}{3}\sqrt{2} & -\frac{7}{9}\sqrt{2} \\ 0 & 0 & \frac{2}{3}\sqrt{6} \end{bmatrix} \begin{bmatrix} x_1 \\ x_2 \\ x_3 \end{bmatrix} = \begin{bmatrix} \frac{2}{3} \\ \frac{1}{3} \\ \frac{2}{3} \end{bmatrix}.$$This gives the system of equations$$\begin{cases} \sqrt{7}x_1 - \frac{1}{3}\sqrt{7}x_2 + \frac{5}{9}\sqrt{7}x_3 = \frac{2}{3}, \\ \frac{5}{3}\sqrt{2}x_2 - \frac{7}{9}\sqrt{2}x_3 = \frac{1}{3}, \\ \frac{2}{3}\sqrt{6}x_3 = \frac{2}{3}. \end{cases}$$Solving the last equation for $x_3,$ we obtain $x_3 = 1.$ Substituting this into the second equation, we obtain $x_2 = \frac{1}{5}.$ Finally, substituting these values into the first equation gives us $x_1 = 1.$ Therefore,$$x = \begin{bmatrix} x_1 \\ x_2 \\ x_3 \end{bmatrix} = \begin{bmatrix} 1 \\ \frac{1}{5} \\ 1 \end{bmatrix}.$$
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Plot the following points on the coordinate gria: A(0,-3),B(-2,0),C(-1,4),D(3,-4)
Answer:
See graph below
Step-by-step explanation:
You start at the origin (0,0). The first number in the ordered pair tells you to go right or left. If the number is positive you go to the right. If the number is negative, you go to the left.
Next, you go up or down. If the number is positive, you go up and if the number is negative you go down. At that spot, you plot your point.
Helping in the name of Jesus.
The plot of the given points on the coordinate grid is shown
To plot the given points on the coordinate grid, follow these steps:
1. Start with point A(0,-3). This point has an x-coordinate of 0 and a y-coordinate of -3. To plot this point, start at the origin (0,0) and move 3 units down on the y-axis. Mark this point with a dot and label it as point A.
2. Next, plot point B(-2,0). This point has an x-coordinate of -2 and a y-coordinate of 0. To plot this point, start at the origin (0,0) and move 2 units to the left on the x-axis. Mark this point with a dot and label it as point B.
3. Now, plot point C(-1,4). This point has an x-coordinate of -1 and a y-coordinate of 4. To plot this point, start at the origin (0,0) and move 1 unit to the left on the x-axis and 4 units up on the y-axis. Mark this point with a dot and label it as point C.
4. Finally, plot point D(3,-4). This point has an x-coordinate of 3 and a y-coordinate of -4. To plot this point, start at the origin (0,0) and move 3 units to the right on the x-axis and 4 units down on the y-axis. Mark this point with a dot and label it as point D.
So, the plot of the given points on the coordinate grid is shown above.
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In order for Ms. Sartain's wonderful, arnazing car to have optimal gas mileage, her tire pressure should be at 32 psi. The manufacturer indicates the tire pressure should remain within 2 psi at all times. Write an absolute value inequality that models this situation. |x+32|<=2 |x-32|<=2 |x+2|<=32 |x-2|<=32 Previous
This |x - 32| <= 2 means that the tire pressure can be anywhere between 30 psi and 34 psi.
In order for Ms. Sartain's car to have optimal gas mileage, the tire pressure should remain within 2 psi of 32 psi at all times. This can be modeled with an absolute value inequality.
The absolute value inequality that models this situation is |x - 32| <= 2. This inequality states that the difference between the tire pressure, x, and the optimal pressure, 32, should be less than or equal to 2.
In other words, the tire pressure can be 2 psi above or below the optimal pressure of 32 psi and still be within the acceptable range. This means that the tire pressure can be anywhere between 30 psi and 34 psi.
So the correct answer is |x - 32| <= 2.
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Factor the following polynomial given that it has a zero at 5 with multiplicity 2 . z^(4)-3z^(3)-63z^(2)+355z-450
Given that the polynomial has a zero at 5 with multiplicity 2, its complete factorization is (x - 5)²(z + 9)(z - 2).
To factor the given polynomial z⁴ - 3z³ - 63z² + 355z - 450, given that it has a zero at 5 with multiplicity 2, we can use the fact that (z - 5)² is a factor of the polynomial. We can then use synthetic division to find the other factors.
First, we divide the polynomial by (z - 5) using synthetic division:
5 | 1 -3 -63 355 -450
| 5 10 -265 450
1 2 -53 90 0
The result of the division is z³ + 2z² - 53z + 90 . Divide it by (z - 5) again since the multiplicity is 2.
5 | 1 2 -53 90
| 5 35 -90
1 7 -18 0
The result of the second division is z² + 7z - 18. This polynomial can still be factorized as (z + 9)(z - 2).
So, the final answer is:
z⁴ - 3z³ - 63z² + 355z - 450 = (x - 5)²(z + 9)(z - 2).
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Need answers to this asap
Answers:
7. x=4.8 8. x=36.6 9. x=36.9 10. x=17.8
Work is shown in the picture below, I'm learning this stuff right now too, so I hope it helps!
The functions f(x) and g(x) are described using the following equation and table:
f(x) = −4(1.09)x
x g(x)
−4 −10
−2 −7
0 −4
2 1
Which equation best compares the y-intercepts of f(x) and g(x)?
The y-intercept of f(x) is equal to the y-intercept of g(x).
The y-intercept of f(x) is equal to 2 times the y-intercept of g(x).
The y-intercept of g(x) is equal to 2 times the y-intercept of f(x).
The y-intercept of g(x) is equal to 2 plus the y-intercept of f(x).
For given functions, "The y-intercept of f(x) is equal to the y-intercept of g(x)" is the correct answer i.e. A.
What is the definition of a function?
In mathematics, a function is a relation between two sets of elements, called the domain and the range, such that each element in the domain corresponds to exactly one element in the range.
More specifically, a function is a rule that assigns each element of the domain (input) to a unique element in the range (output). The notation for a function f with domain D and range R is typically written as:
f: D → R
f is a function mapping elements from the domain D to elements in the range R.
Now,
To find the y-intercept of a function, we set x = 0 and evaluate the function.
For [tex]f(x) = -4(1.09)^x[/tex], when x = 0, we get:
[tex]f(0) = - 4(1.09)^0 = - 4[/tex]
So, the y-intercept of f(x) is -4.
For g(x), we are given a table of values, and we can see that when x = 0, g(x) = -4. Therefore, the y-intercept of g(x) is also -4.
Hence,
The first option "The y-intercept of f(x) is equal to the y-intercept of g(x)" is the correct answer.
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, O EXPONENTS AND POLYNOMIALS Factoring a quadratic with leading coeffici Factor. 2x^(2)+3x-14
The factored form of the given quadratic equation is (2x + 7)(x - 2).
To factor a quadratic equation with a leading coefficient, we need to find two numbers that multiply to give us the constant term (-14) and add to give us the middle term (3).
In this case, the two numbers are 7 and -2. We can then use these numbers to rewrite the middle term of the equation and then factor by grouping.
Here are the steps to factor the given quadratic equation:
1. Rewrite the equation with the new middle terms: 2x^(2) + 7x - 2x - 14
2. Group the first two terms and the last two terms: (2x^(2) + 7x) + (-2x - 14)
3. Factor out the greatest common factor from each group: x(2x + 7) - 2(2x + 7)
4. Factor out the common binomial: (2x + 7)(x - 2)
So, the factored form of the given quadratic equation is (2x + 7)(x - 2).
I hope this helps! Let me know if you have any further questions.
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es, if possible, determine AB. Identify the dimensions of the resulting matrix and fill out the matrix, if it exis A=[[-1],[-6],[7]],B=[[-9,-7,-1]]
The product of these two matrices is a 3x3 matrix, AB.
AB = [[-9, -7, -1]
[-9, -42, -7]
[63, -42, 7]]
To determine AB, we need to multiply matrix A and matrix B. The dimensions of matrix A are 3x1 and the dimensions of matrix B are 1x3. Since the number of columns in matrix A is equal to the number of rows in matrix B, we can multiply these matrices. The resulting matrix will have the dimensions of the number of rows in matrix A and the number of columns in matrix B, which is 3x3.
To multiply the matrices, we take the dot product of each row in matrix A with each column in matrix B. The dot product is the sum of the products of the corresponding entries in the row and column.
AB = [[(-1)(-9) + (-6)(-7) + (7)(-1)], [(-1)(-9) + (-6)(-7) + (7)(-1)], [(-1)(-9) + (-6)(-7) + (7)(-1)]]
AB = [[-9, -7, -1]
[-9, -42, -7]
[63, -42, 7]]
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One type of fertilizer has 30% nitrogen and
a second type has 15% nitrogen. If a farmer
needs 600 kg of fertilizer that is 20%
nitrogen, how much of each type should the
farmer mix together?
[tex]x=\textit{kgs of solution at 30\%}\\\\ ~~~~~~ 30\%~of~x\implies \cfrac{30}{100}(x)\implies 0.3 (x) \\\\\\ y=\textit{kgs of solution at 15\%}\\\\ ~~~~~~ 15\%~of~y\implies \cfrac{15}{100}(y)\implies 0.15 (y) \\\\\\ \textit{60 kgs of solution at 20\%}\\\\ ~~~~~~ 20\%~of~60\implies \cfrac{20}{100}(60)\implies 0.2 (60)\implies 12 \\\\[-0.35em] ~\dotfill[/tex]
[tex]\begin{array}{lcccl} &\stackrel{kgs}{quantity}&\stackrel{\textit{\% of kgs that is}}{\textit{nitrogen only}}&\stackrel{\textit{kgs of}}{\textit{nitrogen only}}\\ \cline{2-4}&\\ \textit{1st Fert.}&x&0.3&0.3x\\ \textit{2nd Fert.}&y&0.15&0.15y\\ \cline{2-4}&\\ mixture&60&0.2&12 \end{array}~\hfill \begin{cases} x + y = 60\\\\ 0.3x+0.15y=12 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{using the 1st equation}}{x+y=60}\implies y=60-x \\\\[-0.35em] ~\dotfill[/tex]
[tex]\stackrel{\textit{using the 2nd equation}}{0.3x+0.15y=12}\implies \stackrel{\textit{substituting from above}}{0.3x+0.15(60-x)=12} \\\\\\ 0.3x+9-0.15x=12\implies 0.15x=3\implies x=\cfrac{3}{0.15} \\\\\\ \boxed{x=20}\hspace{5em}\stackrel{ 60~~ - ~~20 }{\boxed{y=40}}[/tex]
1. Serena has $12 to spend on snacks today. The drinks cost $1.50 each
and chips cost $2 each. Write an equation where x represents the
number of drinks purchased and y represents the number of bags of
chips purchased.
Answer:
1.5x + 2y = 12
Step-by-step explanation:
The equation representing Serena’s spending on snacks today would be 1.5x + 2y = 12, where x represents the number of drinks purchased and y represents the number of bags of chips purchased.
Therefore, the equation is 1.5x + 2y = 12.
Martha baked an apple pie for her family and cut it into 8 pieces . The family ate 2/8 of the pie on Tuesday, 6/8 of the pie on Wednesday, and 4/8 of the pie on thrursday
Answer:
they finished the entire pie
Step-by-step explanation:
A car was purchased for $16,000. Each year since, the resale value has decreased by 22%. Lett be the number of years since the purchase. Let y be the resale value of the car, in dollars. Write an exponential function showing the relationship between y and t.
The exponential function showing the relationship between y and t is y = 16,000(0.78)^t
How to determine the exponential decay functionFrom the question, we have the following parameters that can be used in our computation:
Initial value, a = 16000
Rate = 22% decrement
The exponential function for the resale value y of the car, in dollars, after t years since the purchase can be expressed as:
y = a(1 - r)^t
Substitute the known values in the above equation, so, we have the following representation
y = $16,000 x (1 - 0.22)^t
Evaluate
y = 16,000(0.78)^t
Where 0.78 is the factor by which the resale value decreases each year, calculated as (100% - 22%) / 100% = 0.78.
Hence, the function is y = 16,000(0.78)^t
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A cellular phone service provider has determined the number of devices per account has a probability distribution as follows.
X= #devices
1 2 3 4 5
Probability 0.13 0.43 0.29 ?? 0.07
Answer probabilities to 2 decimal places.
What is the probability of a randomly selected account having 4 devices?
What is the probability of a randomly selected account having at least 3 devices?
What is the probability of a randomly selected account having 2 or 4 devices?
What is the mean number of devices per account? 2 decimal places here!
What is the standard deviation of the distribution? Three decimal places here!
What is the probability that the number of devices in a randomly selected account lies within one standard deviation of the mean (inclusive) ?
Based on the probability distribution, the probability of a randomly selected account having 4 devices is 0.08. The probability of a randomly selected account having at least 3 devices is 0.44. The probability of a randomly selected account having 2 or 4 devices is 0.51. The mean number of devices per account is 2.39. The standard deviation of the distribution is 1.108. The probability that the number of devices in a randomly selected account lies within one standard deviation of the mean (inclusive) is 0.80.
For the given probability distribution, the probability of a randomly selected account having 4 devices is 0.08. This is because the total probability of all possible outcomes must equal 1. So, we can find the missing probability by subtracting the probabilities of the other outcomes from 1:
1 - 0.13 - 0.43 - 0.29 - 0.07 = 0.08
The probability of a randomly selected account having at least 3 devices is the sum of the probabilities of having 3, 4, or 5 devices:
0.29 + 0.08 + 0.07 = 0.44
The probability of a randomly selected account having 2 or 4 devices is the sum of the probabilities of having 2 and 4 devices:
0.43 + 0.08 = 0.51
The mean number of devices per account can be found by multiplying each possible outcome by its probability and summing the results:
(1)(0.13) + (2)(0.43) + (3)(0.29) + (4)(0.08) + (5)(0.07) = 2.39
The standard deviation of the distribution can be found by first calculating the variance and then taking the square root:
Variance = (1-2.39)^2(0.13) + (2-2.39)^2(0.43) + (3-2.39)^2(0.29) + (4-2.39)^2(0.08) + (5-2.39)^2(0.07) = 1.2279
Standard deviation = √1.2279 = 1.108
The probability that the number of devices in a randomly selected account lies within one standard deviation of the mean (inclusive) is the sum of the probabilities of the outcomes that fall within this range:
0.43 + 0.29 + 0.08 = 0.80
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For the points(9,2)and(2,1), (a) Find the exact distance between the points. (b) Find the midpoint of the line segment whose endpoints are the given points. Part 1 of 2 (a) The exact distance between the points is Part 2 of 2 (b) The midpoint is
a) The exact distance is 5√2.
b) The midpoint of the line segment is (5.5, 1.5).
Part 1 of 2 (a) The exact distance between the points (9,2) and (2,1) can be found using the distance formula:
Distance = √[(x2 - x1)^2 + (y2 - y1)^2]
Plugging in the given values:
Distance = √[(2 - 9)^2 + (1 - 2)^2]
Simplifying:
Distance = √[(-7)^2 + (-1)^2]
Distance = √[49 + 1]
Distance = √50
Distance = 5√2
Therefore, the exact distance between the points is 5√2.
Part 2 of 2 (b) The midpoint of the line segment whose endpoints are the given points can be found using the midpoint formula:
Midpoint = [(x1 + x2)/2, (y1 + y2)/2]
Plugging in the given values:
Midpoint = [(9 + 2)/2, (2 + 1)/2]
Simplifying:
Midpoint = [11/2, 3/2]
Midpoint = (5.5, 1.5)
Therefore, the midpoint is (5.5, 1.5).
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A teacher gives out a variety of chocolate bars as a prize for students who correctly explain their answer.Cole randomly selects a candy from the bag what is the probability that the selected chocolate will be either cookies and cream or peanut butter cups
The probability that the selected chocolate will be either cookies and cream or peanut butter cups are,
let cookies and cream be x
and peanut butter cups be y
As these are the two chocolates in the bag,
there is a 50:50 probability
Hence,
The probability of cookies and cream = 50%
The probability of peanut butter cups=50%
As x+y=total both have equal probability
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Two trains, Train A and Train B, weigh a total of 184 tons. Train A is heavier than Train B. The difference of their weights is 90 tons. What is the weight of each train?
Answer:
A: 137 tonsB: 47 tonsStep-by-step explanation:
You want the weights of trains A and B if the sum of their weights is 184 tons and the difference of their weights is 90 tons.
EquationsWe can write the equations for the weights as ...
A +B = 184
A -B = 90
SolutionAdding the two equations gives ...
2A = 274
A = 137
Subtracting the second equation from the first gives ...
2B = 94
B = 47
Train A weighs 137 tons; train B weighs 47 tons.
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A P^(5),000 debit to be made to the Purchaser account was debited to Accounts payabhe instead.
The error that occurred is called a transposition error.
A transposition error is when two digits are reversed or transposed in an accounting transaction. In this case, the debit that was supposed to be made to the Purchaser account was instead debited to the Accounts Payable account.
To correct this error, we need to make a journal entry that reverses the incorrect entry and then make the correct entry. The journal entry to reverse the incorrect entry would be:
Debit: Accounts Payable $5,000
Credit: Purchaser $5,000
This entry reverses the incorrect debit to Accounts Payable and the incorrect credit to Purchaser.
Next, we need to make the correct entry, which is:
Debit: Purchaser $5,000
Credit: Accounts Payable $5,000
This entry correctly debits the Purchaser account and credits the Accounts Payable account.
After these two journal entries are made, the accounts will be correctly balanced and the error will be corrected.
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complete question
A P^(5),000 debit to be made to the Purchaser account was debited to Accounts payabhe instead. which type of error is found here?