The chosen values are:
a) h = 2 (no solution), any k
b) h ≠ 2 (unique solution), any k
c) h = 2 (many solutions), k = 16
To determine values of h and k that result in different solution scenarios for the given systems of equations, we can analyze the coefficient matrices and their determinants.
System 1:
x1 + h*x2 = 2
4x1 + 8x2 = k
a) For the system to have no solution, the coefficient matrix's determinant must be zero, while the augmented matrix's determinant is nonzero.
Taking the determinant of the coefficient matrix, we have:
| 1 h |
| 4 8 |
Determinant = (1 * 8) - (4 * h)
= 8 - 4h
For the system to have no solution, the determinant 8 - 4h must be zero. So we solve:
8 - 4h = 0
h = 2
Therefore, for no solution, h = 2. We can choose any value for k.
b) For the system to have a unique solution, the coefficient matrix's determinant must be nonzero.
So we need to ensure that 8 - 4h ≠ 0.
Choosing h ≠ 2 will satisfy this condition. We can choose any value for k.
c) For the system to have many solutions, the coefficient matrix's determinant must be zero, and the augmented matrix's determinant must also be zero.
For this case, we can choose h = 2 (as determined in part a), and k such that the augmented determinant is also zero.
For example, we can choose k = 16, which satisfies the equation 4 * 2 - 8 * 16 = 0.
Therefore, the chosen values are:
a) h = 2 (no solution), any k
b) h ≠ 2 (unique solution), any k
c) h = 2 (many solutions), k = 16
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On a coordinate plane, a triangle is located at (3, 4), and a square is located at
(10, 4). What is the distance between the square and triangle?
Answer:
7
Step-by-step explanation:
Answer:
7 units north
Step-by-step explanation:
Count from 3,4 to 10,4 and there are seven units
2.
Is (x+2) a factor of r + 8x + 12
Answer:
no because it is not factorable
Step-by-step explanation:
please help me ........
Let f(x) = (1/2)^x. Find f(2), f(0), and f(-3), and graph the function.
The calculated values of the functions are f(2) = 1/4, f(0) = 1 and f(-3) = 1/8
How to calculate the values of the functionsFrom the question, we have the following parameters that can be used in our computation:
f(x) = (1/2)ˣ
Using the above as a guide, we have the following:
f(2) = (1/2)² = 1/4
Also, we have
f(0) = (1/2)⁰ = 1
Lastly, we have
f(-3) = (1/2)⁻³ = 1/8
The graph of the function is attached
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Fifty students in an Italian class were surveyed about how they listen to music. Of those asked:
34 listen to Spotify (S)
30 listen to Pandora (P)
18 listen to the radio (R)
22 listen to Spotify and Pandora
13 listen to Spotify and the radio
4 listen to Pandora and the radio
o 2 listen to Spotify, Pandora, and the radio
(a) Represent this information in a Venn diagram:
(b) How many liked none of these types of music?
(c) How many students liked exactly two of these types of music?
(d) How many liked at least two of these types of music?
In the Italian class survey, 50 students were asked about how they listen to music. A Venn diagram was used to represent the information. Five students liked none of the types of music, 37 students liked exactly two types of music, and 39 students liked at least two types of music.
(a) The information can be represented in a Venn diagram as follows:
In the diagram, S represents the number of students who listen to Spotify, P represents the number of students who listen to Pandora, and R represents the number of students who listen to the radio. The overlapping regions show the number of students who listen to multiple platforms.
___________
| |
| S |
|___________|
| |
R | SP | P
|___________|
| |
| RP |
|___________|
(b) To determine the number of students who liked none of these types of music, we need to find the students who did not fall into any of the three categories. This can be calculated by subtracting the total number of students who liked at least one type of music from the total number of students surveyed.
Total number of students surveyed = 50
Students who liked at least one type of music = S + P + R - (SP + SR + PR) + SPR
Substituting the given values:
Students who liked at least one type of music = 34 + 30 + 18 - (22 + 13 + 4) + 2 = 45
Students who liked none of these types of music = Total number of students surveyed - Students who liked at least one type of music
Students who liked none of these types of music = 50 - 45 = 5
Therefore, 5 students liked none of these types of music.
(c) To find the number of students who liked exactly two types of music, we need to calculate the sum of the students in the overlapping regions of the Venn diagram.
Students who liked exactly two types of music = SP + SR + PR - (SPR)
Substituting the given values:
Students who liked exactly two types of music = 22 + 13 + 4 - 2 = 37
Therefore, 37 students liked exactly two types of music.
(d) To determine the number of students who liked at least two types of music, we need to add the students who liked exactly two types of music to the number of students who liked all three types of music.
Students who liked at least two types of music = Students who liked exactly two types of music + Students who liked all three types of music
Students who liked at least two types of music = 37 + 2 = 39
Therefore, 39 students liked at least two types of music.
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Bayshore College staff are planning an end of the year meeting between students, parents and staff. They are to seat 5 parents, 5 students and 1 teacher in a circular arrangement around a table. In how many ways can this be done if no student is to sit next to another student and no parent is to sit next to another parent? (b) (4 pt) There are 20 student representatives who are already seated in a row of 20 seats. Out of the 20 representatives, 6 are to be chosen to give a speech. How many choices are there if no two of the chosen representatives occupy neighbouring seats?
The total number of choices for selecting 6 representatives without any two occupying neighboring seats is 77597520 .
(a) The number of ways to arrange 5 parents, 5 students, and 1 teacher in a circular arrangement around a table such that no student sits next to another student and no parent sits next to another parent, we can use the principle of inclusion-exclusion.
First, let's consider the arrangements without any restrictions. We have a total of 11 people to arrange around the table (5 parents + 5 students + 1 teacher), which can be done in (11 - 1)! = 10! ways.
Now, let's consider the arrangements where at least two students sit next to each other. We can treat the two adjacent students as a single entity, resulting in 10 entities to arrange around the table (4 parents + 5 student pairs + 1 teacher). This can be done in (10 - 1)! = 9! ways. However, within each student pair, the students can be arranged in 2! ways. Therefore, the total number of arrangements with at least two students sitting next to each other is 9! × 2! ways.
Similarly, we consider the arrangements where at least two parents sit next to each other. Again, we treat the two adjacent parents as a single entity, resulting in 10 entities to arrange around the table (4 parent pairs + 5 students + 1 teacher). This can be done in (10 - 1)! = 9! ways. Within each parent pair, the parents can be arranged in 2! ways. Therefore, the total number of arrangements with at least two parents sitting next to each other is 9! × 2! ways.
By the principle of inclusion-exclusion, the number of valid arrangements is given by
Valid arrangements = Total arrangements - Arrangements with at least two students sitting next to each other - Arrangements with at least two parents sitting next to each other
Valid arrangements = 10! - 9! × 2! - 9! × 2!
Valid arrangements = 2177280
(b) The number of choices for selecting 6 representatives out of 20, where no two chosen representatives occupy neighboring seats, we need to use a combination of counting techniques.
First, choose 6 seats out of the 20 seats in which the representatives will be seated. This can be done in C(20, 6) ways.
Now, since no two chosen representatives can occupy neighboring seats, we can think of the remaining 14 seats as dividers between the chosen representatives. We need to place these dividers in such a way that each chosen representative occupies a separate section.
To ensure that no two representatives occupy neighboring seats, we need to place the dividers such that each section contains at least one seat. We have 6 chosen representatives, so we need to place 5 dividers among the 14 remaining seats. This can be done in C(14, 5) ways.
Therefore, the total number of choices for selecting 6 representatives without any two occupying neighboring seats is given by:
Total choices = C(20, 6) × C(14, 5)
Total choices = 38760 × 2002
Total choices = 77597520
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draw a hypothetical demand curve for tickets to a particular rock concert. use the drop box to upload an image or file containing your demand curve.
The hypothetical demand curve for tickets to a particular rock concert is given in the image attached.
What is the hypothetical demand curve
According to Samuelson: theory, the law of demand states that people buy more at lower prices and less at higher prices when other things remain constant.
Note that by using the image,
Prices of ticket (cent) Demand by consumer
5 35
4 30
3 70
2 80
1 95
Therefore, "Demands curves show how much people will buy the ticket at different prices over time." The Curve shows consumer purchases at different prices.
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find Measure angle WZY QUICK PLEASE
Answer:
<WZY = 31°
Step-by-step explanation:
First, we can see that <XZW is equal to <WZY.
Given that, we know we can set the two equations equal to each other to find "x".
8x - 1 = 5x + 11
Now that the two equations are set equal to each other, all we have to do is simplify to find x.
Bring 5x over and subtract it from 8x.
3x - 1 = 11
Bring -1 over and add it to 11.
Since you're subtracting a negative, it becomes positive allowing you to add it to 11.
3x = 12
Now you need to get x by itself. Do do that, you need to divide three by itself, and whatever you do to one side, you must do to the other.
3x/3 = 12/3
Now you have:
x = 4
____________________________________________________
Now that you know the value of x, all you need to do is plug x back into the equation for <WZY
5(4) + 11
20 + 11
31.
And there is your answer - <WZY = 31°
Korey kept track of the number of miles he ran each week for five weeks. The median number of miles he ran during the five weeks was 20, and the mean was 21. Which list could show the number of miles Korey ran each of the five weeks?
Options:
A. 18, 20, 20, 22, 25
B. 20, 20, 20, 25, 25
C. 16, 19, 21, 22, 22
D. 20, 20, 21, 22, 22
Answer:
A. 18, 20, 20, 22, 25
Step-by-step explanation:
Required
Which list has a mean of 21 and median of 20
Each of the list have 5 numbers and they've all been sorted.
The median is the number at the 3rd position (i.e. the middle number)
So, list C and D are out because they do not have a median of 20.
Next, calculate the mean of lists A and B
[tex]\bar x = \frac{\sum x}{n}[/tex]
A. 18, 20, 20, 22, 25
[tex]\bar x = \frac{18 + 20 + 20 + 22 + 25}{5}[/tex]
[tex]\bar x = \frac{105}{5}[/tex]
[tex]\bar x = 21[/tex]
B. 20, 20, 20, 25, 25
[tex]\bar x = \frac{20 + 20 + 20 + 25 + 25}{5}[/tex]
[tex]\bar x = \frac{110}{5}[/tex]
[tex]\bar x = 22[/tex]
Only list A has a median value of 20 and a mean value of 21
What is 1/4 of 32? Whoever answers first gets Brainliest.
Answer:
8
Step-by-step explanation:
it is
Answer:
8
Step-by-step explanation:
1/4 of 32
1/4 = 25%
25% of 32
32 × 25 ÷ 100
= 8
or
32 ÷ 4 =8
What is the value of x?
Answer:
A
Step-by-step explanation:
the total angles can only add up to 180°, therefore 35 + 70 = 105, 180 - 105 = 75°. 75° = A.
IO. Write an
an equation
m=4
(0,0)
y=-
Please don’t use those link things they don’t work for me please just answer the question, brainliest for the first
Molly drew this sketch of a house. Which of the following best describes the shape
of the roof?
A Rectangle
B Trapezoid
C Parallelogram
D Rhombus
Answer:
the trapezoid .it is the only one that resembles that of a roof.hope this helped
The copy machine runs for 20 seconds and then jams. About how many copies were made before the jam occurred? Round your answer to the nearest tenth
Answer:
10.7
Step-by-step explanation:
If x≠-4, which answer choice represents the following in simplified form (question attached)
A. X+3
B. X-4
C. 2x+6
D. X-3
Answer:
[tex]A) x+3[/tex]
Step-by-step explanation:
[tex]\frac{2x^{2}+14x+24 }{2x+8}[/tex]
[tex]=\frac{2(x^{2}+7x+12)}{2(x+4)}[/tex]
[tex]=\frac{x^{2} +7x+12}{x+4}[/tex]
[tex]=\frac{(x+4)(x+3)}{x+4}[/tex]
[tex]=x+3[/tex]
A solid wooden cone of a diameter 14 cm and vertical length 24 cm is vertically cut into two equal halves. One half is to be covered by colourful paper at the rate of Rs. 7 per sq. cm, find the total cost of the paper required.
(The answer must come Rs. 5950)
plz anyone ASAP help.
Answer:
The answer given is incorrect
The correct answer is Rs. 3640
The total cost of the paper required to cover one-half of the wooden cone is Rs. 3846.5.
What is the surface area of a cone?The surface area of a cone is given by the formula:
surface area = π x r x s
where r is the radius of the base of the cone and s is the slant height of the cone. The slant height of the cone is the distance from the apex of the cone to the base, measured along the surface of the cone.
In this case, the diameter of the base of the cone is 14 cm, so the radius is half the diameter or 14 cm / 2 = 7 cm.
The vertical length of the cone is 24 cm, so the slant height of the cone is the square root of the vertical length squared plus the radius squared:
s = √(24² + 7²)
s = √(576 + 49)
s = √(625)
Which simplifies to:
s = 25 cm
Now that we have the radius and slant height of the cone, we can use the formula for the surface area of a cone to find the surface area of one-half of the cone:
surface area = π x 7 cm x 25 cm = 175π cm²
To find the total cost of the paper required, we need to multiply the surface area by the cost per square centimeter:
total cost = 175 x 3.14 cm² x Rs.7/cm² = Rs. 3846.5
Therefore, the cost of the paper needed to cover one-half of the wooden cone is Rs. 3846.5.
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Find the matrix representation of the derivative map P3(R) → P3(R), with respect to the basis {1, x, x2, x}. 21. Suppose h : P1(R) + R² is a linear transformation with the following matrix representation with respect to the bases B = {1+2, X} and D - = = {(1),(-1)} Repp,p(h) = [ [Ź 2 2 1 4 2 Find the image of the polynomial 2x – 1 under h.
After considering the given data we conclude that the matrix representation of the derivative map [tex]P_3(R) - - - > P_3(R)[/tex]with respect to the basis[tex](1, x, x^2, x)[/tex]is:
[0 1 0 0]
[0 0 2 0]
[0 0 0 3]
[0 0 0 0]
And the image of the polynomial is [tex]3 + 3x + 10x^2.[/tex]
The first part of the question asks for the matrix representation of the derivative map [tex]P_3(R) - - - > P_3(R)[/tex]with respect to the basis [tex](1, x, x^2, x)[/tex] To find this matrix, we have to apply the derivative map to each basis vector and express the result as a linear combination of the basis vectors. The coefficients of these linear combinations will form the columns of the matrix representation.
Applying the derivative map to each basis vector, we get:
[tex]d/dx(1) = 0 = 0(1) + 0(x) + 0(x^2) + 0(x^3)[/tex]
[tex]d/dx(x) = 1 = 0(1) + 1(x) + 0(x^2) + 0(x^3)[/tex]
[tex]d/dx(x^2) = 2x = 0(1) + 0(x) + 2(x^2) + 0(x^3)[/tex]
[tex]d/dx(x^3) = 3x^2 = 0(1) + 0(x) + 0(x^2) + 3(x^3)[/tex]
Therefore, the matrix representation of the derivative map [tex]P_3(R) - - - > P_3(R)[/tex]with respect to the basis [tex](1, x, x^2, x)[/tex] is:
[0 1 0 0]
[0 0 2 0]
[0 0 0 3]
[0 0 0 0]
The second part of the question concerns for the image of the polynomial 2x - 1 under the linear transformation h with matrix representation:
[0 2]
[2 1]
[4 2]
with respect to the bases B = {1+2, x} and D = {(1), (-1)}.
To evaluate the image of 2x - 1, we first need to express it as a linear combination of the basis vectors in B:
[tex]2x - 1 = (-1/2)(1+2) + (2)(x)[/tex]
Next, we need to evaluate the coordinate vector of this linear combination with respect to the basis B. The coordinate vector is:
[-1/2]
Now, we can evaluate the image of 2x - 1 under h by multiplying the matrix representation of h by the coordinate vector:
[0 2]
[2 1]
[4 2]
[-1/2]
Therefore, the image of 2x - 1 under h is [tex]3 + 3x + 10x^2.[/tex]
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What is the other measure of the other acute angle? Pls explain how you got your answer !
Answer:
[tex]65^{o}[/tex]
Step-by-step explanation:
Angles in a triangle add up to 180
An acute angle is any angle smaller than 90
Since it is a right angle triangle, one of the angles is a right angle and therefore 90
So 180 - 90 - 25 = 65
You read that a nationwide survey found that the preferences for ice cream (people had to
choose ONE) are: chocolate: 31%; vanilla: 25%; strawberry: 4%; cookie dough: 17%; and "other":
23%. You live in Berryville, where growing strawberries is a major industry. You suspect that
this may affect the distribution of preferences in your area. You get a sample of 500 Berryville
residents and have them make a choice.
a. State the null hypothesis in words. b. State the alternative hypothesis in words
Answer : Null Hypothesis (H0) The proportion of people choosing strawberry as their preferred flavor of ice cream in Berryville is equal to or greater than the national average of 4%.”
Alternative Hypothesis (Ha) The proportion of people choosing strawberry as their preferred flavor of ice cream in Berryville is significantly lower than the national average of 4%.”
Explanation :
a. Null Hypothesis (H0) is a statement which suggests that there is no significant difference between two populations or samples in the study. In this scenario, the null hypothesis can be stated as follows:“The proportion of people choosing strawberry as their preferred flavor of ice cream in Berryville is equal to or greater than the national average of 4%.”
b. Alternative Hypothesis (Ha) is a statement that counters the null hypothesis by suggesting that there is a significant difference between two populations or samples in the study. In this scenario, the alternative hypothesis can be stated as follows:“The proportion of people choosing strawberry as their preferred flavor of ice cream in Berryville is significantly lower than the national average of 4%.”
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please whats the answer?
Answer:
=93
Step-by-step explanation:
[tex]7 \frac{5}{6} + 5 \frac{1}{9} [/tex]Then mutiply 6 x7 with will give you 42 then add 5 which will equal =47The speed of a garden snail is about 8.5×10−6 miles per second. If a garden snail moves at this speed in a straight line for 2×103 seconds, how far would the snail travel in standard notation and scientific notation.
Answer:
17*10^-3 miles
Step-by-step explanation:
Given data
Speed= 8.5×10^−6 miles per second
Time taken=2×10^3 seconds
We know that the expression for the speed is given as
speed= distance/time
distance= speed* time
substitute
distance= 8.5×10^−6* 2×10^3
distance= 8.5*2*(10^-6+3)
distance= 17*10^-3 miles
The options are -63/16, -61/16,-59/16, -31/8, -15/4, -29/8
Answer:
-31/8. That's the answer to your question
Find the value of x to the nearest tenth.
Answer:
2.8
Step-by-step explanation:
√(4² - 2²) = √12
=> √[(√12)² - 2²] = √8 ≈ 2.8
Catherine Destivelle was the first woman rock climber to complete a solo ascent in 1992. She is helping to design an inside rock-climbing wall on which other climbers can practice. She draws the figure
below on the coordinate grid to represent part of the wall. Each square represents one foot
Answer:
count the unit squares
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
I would love some help pls, if anyone could talk me through it, that would be phenomenal I have no clue what’s going on lol
Answer:
B) 7x - 3 = 4
Step-by-step explanation:
3x - 12 = -9
3x = 3
x = 1
A) NOPE
x - 5 = -6
x = -1
B) YES
7x - 3 = 4
7x = 7
x = 1
HELP ASAP! first one to answer gets brainliest and 15 points
No links or fake answers
5 questions attached
Answer:
1st: x-120
2nd: 0
3rd: x+12
4th: 120 + x
5th: x+12
im pretty sure that's right...?
I won't get brainliest lol
Use multiplication to explain why 3/4 ÷ 2/5 =15/8 please help me
Answer:
See below
Step-by-step explanation:
[tex] \frac{3}{4} \div \frac{2}{5} \\ \\ = \frac{3}{4} \times \frac{5}{2} \\ \\ = \frac{3 \times 5}{4 \times 2} \\ \\ = \frac{15}{8} [/tex]
A polynomial of degree 3 is multiplied by a polynomial of degree 5. What is the degree of the product?
Answer:
8
Step-by-step explanation:
The degree of a polynomial refers to the term with the highest exponent. Thus the highest exponent in a degree 3 polynomial is x3; for a degree 5 polynomial, it's x5. When you multiply
x3*x5 = x3+5 = x8.
So the product of a degree 3 polynomial and a degree 5 polynomial is a degree 8 polynomial.
Your leading term will result from the 3-degree term of the first polynomial, and the 5-degree term of the second. So you'll have something like ax3 * bx5. That will result in x3*x5=x8, so your product will have degree 8.
2. Including the outlier, what is the Q1, Q3, and IQR of the data set?
id
A.Q1 = 29; Q3 = 29; IQR = 2
B.Q1 = 27; Q3 = 29; IQR = 28
C.Q1 = 28; Q3 = 27; IQR = 1
D.Q1 = 27; Q3 = 29; IQR = 2
2 hot
F is a function that describes a sequence and is therefore defined over the positive
integers. Find the first four terms of the sequence.
f(n) = 100(-0.1)n-1
f(0) = -1000, f(1) = 100, f (2) = -10, f(3) = 1
f(1) = -10, f (2) = 1, f (3) = -0.1, f (4) = 0.01
f(1) = 100, f (2) = 10 f(3) = 1, f (4) = 0.1
f(1) = 100, f (2) = -10, f(3) = 1, f (4) = -0.1
Answer:
Suppose we add up alternate Fibonacci numbers, Fn-1 + Fn+1; that is, what do ... L(1)=1 and L(3)= 4 so their sum is 5 whereas F(2)=1; L(2)=3 and L(4)= 7 so their ... What is the relationship between F(n-2), and F(n+2)? You should be able to find a ... Fib(N); K (an EVEN number!), Lucas(K) and Fib(K) in each expression like ...
Step-by-step explanation: