We have solution as:
z =z and y -8-z
The solution set is
x=9, y = -8-z, w = 1, z = z
Matrix:Matrix is an arrangement of numbers into rows and columns. Make your first introduction with matrices and learn about their dimensions and elements. A matrix is a rectangular arrangement of numbers into rows and columns. For example, matrix A has two rows and three columns.
The augmented matrix in row-reduced form below is equivalent to the augmented matrix of a system of linear equations.
[ 1 0 0 0 | -9 ]
[ 0 1 1 0 | -8 ]
[ 0 0 0 1 | 1 ]
We find that this is a rectangular matrix 3 rows and 4 columns
i.e. the variables are four but independent equations are only 3.
So only parametric equations can be found out
First row gives x = -9
Last row gives w = 1
II row gives y + z =-8 and we do not have any other equation in y or z
Hence we have solution as:
z =z and y -8-z
The solution set is
x=9, y =-8-z, w =1, z=z
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The given question is incomplete, complete question is :
Given that the augmented matrix in row-reduced form below is equivalent to the augmented matrix of a system of linear equations. Determine whether the system has a solution and find the solution(s) to the system, if they exist.
[ 1 0 0 0 | -9 ]
[ 0 1 1 0 | -8 ]
[ 0 0 0 1 | 1 ]
A) x=-9, y=-8, z=-8, w=1
B) No solution.
C) x=-9, y=-8, z=1
D) x=-9, y=-8+z, w=1, z=any real number
E) z=-9, y=-8-z, w=1, z=any real number
F) None of the above.
What is x?
Please help!!!
Answer:
Below
Step-by-step explanation:
For RIGHT triangles
Cos (21°) = adjacent leg / hypotenuse
cos ( 21°) = x / 21
re-arrange to
21 * cos (21°) = x then use calculator to find x = 19.6 units
( it may not look like it from the picture...but the picture is not drawn to scale : a 21° angle is much smaller than pictured)
Divide using long division
(6x³ - 2x² + 10x -25) ÷ (2x - 2)
The result of the long division of the polynomial (6x³ - 2x² + 10x -25) ÷ (2x - 2) is 3x² + 2x + 7 ( - 11 / 2x - 2 ).
What is the quotient of the polynomial?A long division polynomial is an algorithm for dividing polynomial by another polynomial of the same or a lower degree.
The quotient of the polynomial is obtained by using long division method as shown below.
3x² + 2x + 7
---------------------------------
2x - 2 √ ( 6x³ - 2x² + 10x -25 )
- (6x³ - 6x² )
-------------------------
4x² + 10x -25
- ( 4x² - 4x )
------------------------------
14x - 25
- ( 14x - 14 )
-------------------------------
- 11
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how many odd numbers with middle digit 5 are there between 40000 and 69999 with no digits repeating?
There are 105 odd numbers with a middle digit of 5 between 40000 and 69999 with no repeating digits.
We must first take into account the limitations of the issue in order to determine this.
The unit digit must either be 1, 3, 5, 7, or 9 because the number must be odd.The number must have 5 in the ten thousands place because the middle digit must be 5.The first digit must fall between 4 and 6, inclusive, and the number must fall between 40000 and 69999.The remaining digits must be distinct from one another and from the digits that have previously been utilized because they cannot repeat.∴,
There are three options for the first digit: 4, 5, and 6.
There are five options for the units digit: 1, 3, 5, 7, and 9.
There are seven possible outcomes for the remaining digits: 0, 2, 4, 6, 7, 8, and 9.
According to the multiplication principle, the total number of numbers having the needed qualities is:
3 × 5 × 7 = 105
Thus, there are 105 odd numbers between 40000 and 69999 that have a middle digit of 5 but no repeated digits.
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How many solutions does the system of equations shown below have?
no solution
infinitely many solutions
one solution with a y value of 5
one solution with a y value of -1
The number of solutions that this system of equations shown above has is: A. no solution.
What is no solution?In Mathematics, no solution is sometimes referred to as zero solution, and an equation is said to have no solution when the left hand side and right hand side of the equation are not the same or equal.
This ultimately implies that, an equation would have no solution when both sides of the equal sign are not the same and the variables cancel out, which can be demonstrated through this system of equation;
x + y = 4
x + y = 6
4 - y + y = 6
4 = 6 (no solution).
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betty and karen have been hired to paint the houses in a new development. working together, the women can paint a house in two-thirds the time that it takes karen working alone. betty takes 8 h to paint a house alone. how long does it take karen to paint a house working alone?
It take 4 hours to paint a house working alone.
Betty and karen have been hired to paint the houses in a new development. Working together the women can paint a house in two thirds the time that it takes karen working alone. Betty takes 8 hours to paint a house alone. How long does it take karen to paint a house working alone?
According to the problem, when Betty and Karen work together, they can paint a house in two-thirds the time it takes Karen to paint a house alone, so t * 2/3.
Let k = time it takes Karen to paint the house alone
then
(2/3)(k)(1/k + 1/8) = 1
(2k/3)(1/k + 1/8) = 1
(2k)(1/k + 1/8) = 3
(2 + k/4) = 3
K=4
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A computer with a manufacturer's suggested list price of $1400 is supplied with trade discounts of 40/10. The invoice is dated october 27th and paid in full on november 15th. Cash terms are 8/10, 2/20, EOM. The computer is priced with a 35% markup based on selling price. What is the total amount due on november 15th?
The total amount due on November 15th would be $1667.81
Let's first calculate the trade discount amount:
Suggested list price: $1400
Trade discount rate: 40/10 = 4%
Trade discount amount: $1400 x 4% = $56
After deducting the trade discount, the price becomes:
$1400 - $56 = $1344
Next, let's calculate the cash discount:
Amount after trade discount: $1344
Cash discount rate: 8/10 = 8%
Cash discount amount: $1344 x 8% = $107.52
After deducting the cash discount, the price becomes:
$1344 - $107.52 = $1236.48
Finally, let's calculate the total amount due:
Amount after cash discount: $1236.48
Markup rate: 35%
Markup amount: $1236.48 x 35% = $431.33
Total amount due: $1236.48 + $431.33 = $1667.81
So, the total amount due on November 15th would be $1667.81.
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If the base angle of an isosceles triangle measures 15°, which equation would represent would help you find the missing apex angle measure?
The equation that represents the apex angle is x + 15° + 15° = 180°. And the measure of the apex angle is 150°.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.
The two triangular legs and their opposing angles are congruent in an isosceles triangle.
If the base angle of an isosceles triangle measures 15°. And the angle of 15° is an isosceles angle.
Let the third angle be 'x'. Then the equation is given as,
x + 15° + 15° = 180°
x = 180° - 15° - 15°
x = 180° - 30°
x = 150°
The equation that represents the apex angle is x + 15° + 15° = 180°. And the measure of the apex angle is 150°.
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A bag contains 6 yellow marbles, 1 white marble, and 3 red marbles. What fraction of the marbles is yellow? Write the answer in simplest form.
Step-by-step explanation:
There are 6 + 1 + 3 = 10 marbles in total.
Out of these, 6 are yellow, so the fraction of yellow marbles is 6/10 = 3/5.
Look at this graph: 10 9 8 7 6 5 4 3 2 1 O 12 3 4 5 6 7 8 9 What is the slope? X 10
Answer:
2
Step-by-step explanation:
Start at the bottom of the graph. It starts at (8,0). From that point go up 2 and one to the right. You will be back on the line at the point (9,2)
Slope is your rise over your run. 2/1 = 2
Which table represents a function?
Answer:
The first table(top row, leftmost) represents a function
Step-by-step explanation:
In a function y = f(x), the value for y must be unique for a value of x
In other words, you cannot have two different values of y for the same x
We see that only the first table(top row, leftmost) satisfies this requirement
So that is the answer
Second table has two values for x = -5
Third table has two values of x = -2
Fourth table has two values for x = -4
WILL GIVE brainliest
Answer:
[tex]10.3x-10.3y[/tex]
Step-by-step explanation:
Distribute 10.3 to x and -y
[tex]10.3x-10.3y[/tex]
Mr. Liling bought 10 shares of stock in QIZ Software at the beginning of 2016 for $198. 58 per share. The table shows how the value of the stock changed
during 2016 and during 2017
QIZ Software
Change in
Year
stock price
2016 - 59. 73
2012 +$1936
What was the total value of Mr. Liling's shares at the end of 2016?
The total value of Mr. Liling's shares at the end of 2016 was $1388.50.
The value of a share, also known as the stock price, represents the price per unit of ownership in a company. It is determined by supply and demand for the stock in the stock market and can fluctuate based on a variety of factors such as the company's financial performance, industry trends, and overall market conditions.
At the beginning of 2016, Mr. Liling bought 10 shares of stock in QIZ Software for $198.58 per share, so the total cost was 10 * $198.58 = $1985.80.
In 2016, the stock price of QIZ Software changed by -$59.73, so the value of Mr. Liling's shares at the end of 2016 was $1985.80 - 10 * $59.73 = $1985.80 - $597.30 = $1388.50.
So, the total value of Mr. Liling's shares at the end of 2016 was $1388.50.
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Make X the subject of the formula
y=mx-c
Answer:
[tex]x = \frac{y + c}m[/tex]
Step-by-step explanation:
[tex]y = mx - c \text{ // Add c}\\y + c = mx - c + c\\\to y + c = mx \text{ // Divide by m}\\\\\frac{y + c}m = \frac{mx}m\\\\\to \frac{y + c}m = x[/tex]
Which is the better value: $285 for 150 ft square of carpet or $252 for 120 ft square of carpet
Answer:
Step-by-step explanation:
2nd one because if you use logic it works
btw this is a real answer
Evaluate 8.3x + 7.5y when x = 3 and y = 4.
8.3( blank) + 7.5( blank) = blank + 30.0= Answer?
The value of the expression is 94.9
How to determine the valueAlgebraic expressions are expression with variables, terms, coefficients, factors and constants.
They are also made up of mathematical operations, such as;
AdditionSubtractionBracketParenthesesSubtraction, etcFrom the information given, we have that;
8.3x + 7.5y
When x = 3 and y = 4
Substitute the values into the formula
8.3(3) + 7.5(4)
expand the bracket
24.9 + 60
Add the values
84. 9
Hence, the value is 84.9
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Write each function in vertex form and identify the vertex.
f(x) = x^2- 16 x + 3
f(x) = 4x^2+24x-7
f(x) = -2x^2- 8x + 9
For the quadratic equations -
1) f(x) = x² - 16x + 3 → Vertex form is y = 3(x - 8)² - 61 and vertex is (8,-61).
2) f(x) = 4x² + 24x - 7 → Vertex form is y = 4(x + 3)² - 43 and vertex is (-3,-43).
3) f(x) = -2x² - 8x + 9 → Vertex form is y = -2(x + 2)² + 17 and vertex is (-2,17).
What is a quadratic function?
A polynomial function with one or more variables, where the largest exponent of the variable is two, is referred to as a quadratic function. It is also known as the polynomial of degree 2 since the greatest degree term in a quadratic function is of second degree.
The quadratic equation is written in the form ax² + bx + c = 0.
The vertex form of a quadratic equation is -
y = a(x - h)² + k
The first equation is - f(x) = x² - 16x + 3.
Here, a = 1, b = -16 and c = 3
The formula for h is -
h = -b/2a
h = -(-16)/2(1)
h = 16/2
h = 8
The formula for k is -
k = c - (b²/4a)
k = 3 - [(-16)²/4(1)]
k = 3 - (256/4)
k = 3 - 64
k = -61
So, the vertex form is -
y = a(x - h)² + k
y = 3(x - 8)² - 61
The vertex is written as (h,k).
The vertex is (8,-61).
Therefore, the vertex form and vertex is y = 3(x - 8)² - 61 and (8,-61) respectively.
The second equation is - f(x) = 4x² + 24x - 7.
Here, a = 4, b = 24 and c = -7
The formula for h is -
h = -b/2a
h = -(24)/2(4)
h = -24/8
h = -3
The formula for k is -
k = c - (b²/4a)
k = -7 - [(24)²/4(4)]
k = -7 - (576/16)
k = -7 - 36
k = -43
So, the vertex form is -
y = a(x - h)² + k
y = 4(x + 3)² - 43
The vertex is written as (h,k).
The vertex is (-3,-43).
Therefore, the vertex form and vertex is y = 4(x + 3)² - 43 and (-3,-43) respectively.
The third equation is - f(x) = -2x² - 8x + 9.
Here, a = -2, b = -8 and c = 9
The formula for h is -
h = -b/2a
h = -(-8)/2(-2)
h = 8/-4
h = -2
The formula for k is -
k = c - (b²/4a)
k = 9 - [(-8)²/4(-2)]
k = 9 - (64/-8)
k = 9 + 8
k = 17
So, the vertex form is -
y = a(x - h)² + k
y = -2(x + 2)² + 17
The vertex is written as (h,k).
The vertex is (-2,17).
Therefore, the vertex form and vertex is y = -2(x + 2)² + 17 and (-2,17) respectively.
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The following box plot shows points awarded to dance teams that competed at a recent competition: box plot with number line titled Points with 0 as the minimum, 50 as quartile 1, 70 as the median, 90 as quartile 3, and 100 as the maximum Which dot plot best represents the box plot data? dot plot titled Dance Competition Points with Points on the x axis and Number of Teams on the y axis with 1 dot over 0, 2 dots over 50, 1 dot over 70, 2 dots over 90, 1 dot over 100 dot plot titled Dance Competition Points with Points on the x axis and Number of Teams on the y axis with 2 dots over 70, 1 dot over 90, 2 dots over 100, 1 dot over 110 dot plot titled Dance Competition Points with Points on the x axis and Number of Teams on the y axis with 2 dots over 50, 1 dot over 70, 2 dots over 90, 1 dot over 100 dot plot titled Dance Competition Points with Points on the x axis and Number of Teams on the y axis with 2 dots over 50, 1 dot over 70, 2 dots over 90, 1 dot over 100, 1 dot over 110
A dot plot is a graphical representation of data that shows the frequency of each data value on a number line by plotting dots above the values. A box plot is a graphical representation of data that depicts data distribution using five key values: minimum, first quartile, median, third quartile, and maximum.
The box plot in this case depicts the distribution of points awarded to dance teams in a competition. The minimum value is zero, the first quartile is fifty, the median is seventy, the third quartile is ninety, and the maximum value is one hundred.
"dot plot titled Dance Competition Points with Points on the x axis and Number of Teams on the y axis with 2 dots over 50, 1 dot over 70, 2 dots over 90, 1 dot over 100," is the dot plot that best represents the box plot data. This dot plot accurately reflects the data distribution in the box plot.
It shows two dots over 50 (representing two teams), one dot over 70 (representing one team), two dots over 90 (representing two teams), and one dot over 100 (representing one team) (representing 1 team). These values correspond to the box plot values and accurately represent the data distribution.
The other dot plots do not accurately reflect the distribution of the data as they either have incorrect values or incorrect frequencies for each value.
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Twelve years ago, Claire put $1,800 in an account that pays an interest rate of 2.5% compounded semiannually.She now plans to take the money in that account and invest it in another account that earns 4% interest compounded monthly. How much money will be in this new account after 7 years? $3,574.15 $3,348.96 $3,733.62 $3,207.40
The amount in the new account (future value) after 7 years will be D. $3,207.40.
How is the future value determined?The future value of the investment is determined in two stages.
The first stage compounds the present investment semiannually at 2.5%.
Using the determined future value of the first stage, we can determine the second stage's future value.
To determine the future values, we deploy an online finance calculator.
Future Value of $1,800 after 12 Years:N (# of periods) = 24 semiannual periods (12 years x 2)
I/Y (Interest per year) = 2.5%
PV (Present Value) = $1,800
PMT (Periodic Payment) = $0
Results:
Future Value (FV) = $2,425.23
Total Interest = $625.23
Future Value of after 7 Years:N (# of periods) = 84 months (7 years x 12)
I/Y (Interest per year) = 4%
PV (Present Value) = $2,425.23
PMT (Periodic Payment) = $0
Results:
Future Value (FV) = $3,207.40
Total Interest = $782.17
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my teacher said that we need to study geometric formulas but i dont know what about it to study, where do I start?
Answer: maybe go to quizly
Step-by-step explanation: just type geometric formulas quizly in the search bar
answer you can go to kahn acadamy
Step-by-step explanation:
please add me on brainlist
I'm confused can someone please explain to me how to do this?
Answer:
The function displayed in the table is best described as an Exponential Decay Function.
Step-by-step explanation:
First, the main difference between a linear and an exponential function is the shape of its graph, as well as the presence of either a constant ratio or a constant rate of change.
Linear functions are functions with a base function of [tex]f(x)=mx+b[/tex], which has a constant rate of change ([tex]m[/tex]), and the shape of its graph will be a straight line.
Exponential functions on the other hand use the base function [tex]f(x)=a^x[/tex], where [tex]a[/tex] is the constant ratio of the function, and its graph is curved and has a horizontal asymptote that the graph will approach but never touch as it either increases or decreases to positive or negative infinity respectively.
The function in the problem gives you four points that are on its graph: (-2, 540), (-1, 270), (0, 135), and (1, 67.5). Using these points, you can determine whether it is a linear or exponential function. You can tell that when the x-value increases by 1, the f(x) value is divided by 2, or multiplied by [tex]\frac{1}{2}[/tex]. Since there is a constant ratio instead of a constant rate of change in the function, you would know that the function in the table is an exponential function. Since the function is also constantly decreasing, the function would be best described as an Exponential Decay Function.
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Please help asap!!!!!!!!
The y-coordinate for the solution to the system of equations is -3.
What is a system of equations?
A finite set of equations for which common solutions are sought is referred to in mathematics as a set of simultaneous equations, often known as a system of equations. The intersection of two lines represents the system of equations' solution.
Given system of equations are,
6x + 11y = -3
4x + y = 17
To solve these equations, we must first remove x or y terms.
To do this we must make the removing term's coefficients the same.
In this case, let's remove y.
We are multiplying the second equation by 11. Then,
6x + 11y = -3
44x + 11y = 187
Now we will subtract the second equation from the first.
- 38x = -190
x = 5
Now to find y, substitute x in any one of the equations.
6 * 5 + 11y = -3
11y = -33
y = -3
Hence the y-coordinate for the solution to the system of equations is -3.
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A truck driver drove 350 miles in 8 3/4 hours. what is the speed of the truck in miles per hour?
Answer:
40 miles per hours
Step-by-step explanation:
We know
A truck driver drove 350 miles in 8 3/4 hours.
8 3/4 = 35/4 = 8.75
So, the truck driver drove 350 miles in 8.75 hours
What is the speed of the truck in miles per hour?
We take
350 divided by 8.75 = 40 miles per hours
So, the speed of the truck is 40 miles per hour.
Look at pic for directions and the triangle
9) What is the area of the triangle?
10) what is the area of the rectangular shaded (lavender) area that lies behind the triangle
11) explain how to find the area of the triangle without using a formula
9. The area of the triangle is 17. 5 square units
10. The area of the rectangular shaded (lavender) area that lies behind the triangle is 72 square units
11. By counting the dots around the shapes.
How to determine the areaThe formula for calculating the area of a triangle is expressed as;
A = 1/2bh
Given that the parameters are;
A is the area of the triangleb is the base of the triangleh is the height of the triangleFrom the diagram, we have;
Area = 1/2 × 5 × 7
Area = 17. 5 square units
The formula for area of a rectangle is expressed as;
Area = lw
Substitute the values
Area = 9 × 8
Multiply the values
Area = 72 square units
Hence, the values are 17. 5 square units and 72 square units
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express x*2-8x+5 in the form(x-a)*2-b where a and b are integers
An equivalent expression of x² - 8x + 5 is (x - 4)² - 11
To convert this quadratic expression x² - 8x + 5 into the form (x - a)² - b we will use completing the square method.
Comparing expression x² - 8x + 5 with ax² + bx + c we get,
a = 1, b = -8 and c = 5
First we find the value of the expression (b/2a)² is:
(b/2a)²
= [-8/(2 × 1)]²
= (-8/2)²
= (-4)²
= 16
Now, we add and subtract the value of the term (b/2a)² in the expression x² - 8x + 5
So the expression x² - 8x + 5 becomes,
x² - 8x + 5
= x² - 8x + 5 + 16 - 16
= x² - 8x + 16 + 5 - 16 ......(commutative property of addition)
= (x - 4)² - 11 ......(since (x - 4)² = x² - 8x + 16)
Therefore, the required expression is: (x - 4)² - 11
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The mean weight of ten people in a lift is 70 kg. The weight limit for the lift is 1000 kg. Roughly how many more people can get into the lift? Help!
Hi there, here's your answer:
From the question,
Given:
Weight limit for the lift = 1000kg
Mean weight of 10 people = 70kg
Therefore, the total weight of 10 people inside the lift is 70 × 10 = 700kg.
Now, remaining weight that can fit in the lift is 1000 - 700 = 300kg.
Assuming the mean weight of the people who get inside the lift is constant, we find the closest number of people who can get inside the lift to be:
300 ÷ 70 = 4.285
Or
Roughly 4 more people.
Hope it helps!
If S= (4, -6) and T= (5, -1), find the sum of S + T
Sum of coordinates, S + T = (9 , -7)
What is coordinate?A coordinate is an address, which helps to locate a point in space. For a two-dimensional space, the coordinates of a point are (x, y). Here let us take note of these two important terms.
Abscissa: It is the x value in the point (x, y), and is the distance of this point along the x-axis, from the origin
Ordinate: It is the y value in the point (x, y)., and is the perpendicular distance of the point from the x-axis, which is parallel to the y-axis.
Given,
S = (4 , -6)
T = (5 , -1)
S + T = (4 , -6) + (5 , -1)
= (4 + 5 , -6 + -1)
= (9 , -7)
Hence, S + T = (9 , -7) is sum of coordinates of point S and T
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HELP ASAP, WILL MARK FIRST ANSWER BRAINLIEST,
An experiment is conducted with a bag of marbles containing 5 white and 2 blue marbles. The results of a marble being drawn twice and replaced 100 times are shown in the table.
Outcome Frequency
White, White 27
White, Blue 22
Blue, Blue 18
Blue, White 33
Find P(no blue).
25 over 100
27 over 100
33 over 100
75 over 100
The probability of being no blue marble in the experiment is given as follows:
P(no blue) = 27/100.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes.
The total number of outcomes for this problem is given as follows:
100.
The desired outcomes are those with only white marbles, which are of:
27.
Hence the probability of being no blue marble in the experiment is given as follows:
P(no blue) = 27/100.
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Nuka is weaving beaded strips. The double number line shows that they can weave 7 cm of the strip in 4 minutes
Based on the ratio shown in the double number line, what length can Nuka weave in 5 minutes?
8.75 cm length can Nuka weave in 5 minutes.
What is multiplication?
In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
here, we have,
they can weave 7 cm of the strip in 4 minutes
so, Nuka weave in 5 minutes = 7/4 *5
= 8.75 cm
Hence, 8.75 cm length can Nuka weave in 5 minutes.
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THIS IS DUE TODAY! First person will get brainliest! I only need the function tables. Please help!
Answer:The Attachment
Step-by-step explanation:
At the beach this weekend, the ratio of sandcastles to kites was 5:2. If there were 6 kites , how many sandcastles were there?