The value of the matrix multiplication A x B is matrix C
The value of B is [tex]B = \begin{pmatrix}x\\ y\end{pmatrix} = \begin{pmatrix}8\\ 8\end{pmatrix}[/tex]
What is multiplication of matrices?
The product of two matrices A and B is defined if the number of columns of A is equal to the number of rows of B. The first matrix must have the same number of columns as the second matrix has rows. The number of rows of the resulting matrix equals the number of rows of the first matrix, and the number of columns of the resulting matrix equals the number of columns of the second matrix
Given data ,
The number of shirts sold by club A = 2
The number of notebooks sold by club A = 3
The number of shirts sold by club B = 1
The number of notebooks sold by club B = 1
Now , the value of matrix A is
[tex]A = \begin{pmatrix}2&3\\ 1&1\end{pmatrix}[/tex]
The value of matrix B is
[tex]B = \begin{pmatrix}x\\ y\end{pmatrix}[/tex]
The product of matrix A and B will be C , and the value of matrix C is
[tex]C = \begin{pmatrix}40\\ 16\end{pmatrix}[/tex]
So , the equation is
A x B = C
Substituting the values in the equation , we get
[tex]\begin{pmatrix}2&3\\ 1&1\end{pmatrix}\begin{pmatrix}x\\ y\end{pmatrix}=\begin{pmatrix}40\\ 16\end{pmatrix}[/tex]
On simplifying the equation , we get
[tex]\begin{pmatrix}2x+3y\\ x+y\end{pmatrix}=\begin{pmatrix}40\\ 16\end{pmatrix}[/tex]
So , the equations are
2x + 3y = 40 be equation (1)
x + y = 16 be equation (2)
Multiply equation (2) with 2 , we get
2x + 2y = 32 be equation (3)
Now , subtracting equation (3) from equation (1) , we get
y = 8
Substituting the value for y in equation (2) , we get
x + 8 = 16
Subtracting 8 on both sides of the equation , we get
x = 8
Therefore , the value of x is 8 and y is 8
Hence , the value of matrix B is [tex]B = \begin{pmatrix}x\\ y\end{pmatrix} = \begin{pmatrix}8\\ 8\end{pmatrix}[/tex]
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please anyone help I need help right or wrong I need to pass my classes
Answer:
B second one
Step-by-step explanation:
2000-750/5=250
IT takes Santa 5 minutes to fly 35 miles with the wind It takes him 7 min to go 35 miles against the wind Determine the speed of Santa 's sleigh in air (X) and the speed of the wind (Y)
Speed of Santa 's sleigh in air (X) is 6 units and the speed of the wind (Y) is 1 unit.
What is arithmetic?
Arithmetic is an elementary a part of arithmetic that consists of the study of the properties of the normal operations on numbers—addition, subtraction, multiplication, division, mathematical operation, and extraction of roots.
Main body:
Let 'y' stand for the speed of the wind and 'x' stand for the speed of Santa. We will use the general equation (distance)=(rate)(time) to write two equations from the given information:
With the wind:
35=(x+y)(5) -------(1)
Against the wind:
35=(x-y)(7) --------(2)
using equation 1 ,we have
x+y = 7
using equation 2 ,we have
x- y = 5
now solving both equations , we get
x = 6 and y = 1
Hence , speed of Santa 's sleigh in air (X) is 6 units and the speed of the wind (Y) is 1 unit.
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A new gaming chair costs $455.95. You have already saved $136.45 and earn $35.50 each week babysitting. Write and solve an equation to determine how many weeks, w, you must babysit to earn enough money to buy the new gaming chair.
35.5 + 136.45w = 455.95; w = 9
35.5w + 136.45 = 455.95; w = 9
35.5w − 136.45 = 455.95; w = 17
35.5w − 455.95 = 136.45; w = 17
The equation to determine how many weeks, w, you must babysit to earn enough money to buy the new gaming chair is A. 35.5w + 136.45 = 455.95; w = 9
How to calculate the equation?An equation is the statement that illustrates the variables given. In this case, two or more components are taken into consideration to describe the scenario.
In this case, a new gaming chair costs $455.95. You have already saved $136.45 and earn $35.50 each week babysitting.
Let the number of weeks be w.
This will be represented as:
136.45 + 35.50w = 455.95
Collect the like terms
35.50w = 455.95 - 136.45
35.50w = 319.50
Divide
w = 319.50 / 35.50
w = 9
The number of weeks is 9.
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The answer is A!
Step-by-step explanation:
It's right can I get brainliest?
Jadas sister earns 15 dollars per hour. The store offers her a raise a 9% increase per hour. After the raise , how much will Jadas sister make per hour?
Answer:
$16.35 is jadas sister new hourly pay
Step-by-step explanation:
hope this helps
When you flip a biaed coin the probability of getting a tail i 0. 52. Find the probability of getting a head
The probability of getting a head given that probability of getting a tail is 0. 52 is 0.48.
Probability of getting at least one head is equal to the probability of all events (100 percent, or 1) less the likelihood of receiving all tails .
Therefore the probability of getting a head is ( 1 - 0.52)
= 0.48
A random event's occurrence is the subject of this area of mathematics. The range of the probability is 0 to 1.
The degree to which something is likely to happen is basically what probability means. You will understand the potential outcomes for a random experiment using this fundamental theory of probability, which is also applied to the probability distribution. Knowing the total number of outcomes is necessary before we can calculate the likelihood that a specific event will occur.
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3. Suppoe that the demand equation for a monopolit i p-100-0. 02x and the cot function i Co)-20x10000 (a)Find the value of x that maximize the profit, and determine the correponding price and total profit for thi level of production (6)Suppoe that the government ha impoed an excie tax of $5 per unit. Find the value of that maximize the profit, und determine the correponding price and total profit for thi level of production
The value of that maximize the profit, und determine the corresponding price and total profit for the level of production is $52,500
Given,
Suppose that the demand equation for a monopolist is p=100−.02x and the cost function is C(x)=20x+10,000. Find the value of x that maximizes the profit and determine the corresponding price and total profit for this level of production.
Here we need to find the value of that maximize the profit.
As per the Monopolist maximizes profit by setting marginal costs (MC) equal to marginal revenue (MR).
Here the Marginal revenue is the first partial derivative of Total revenue (TR) function.
And the total revenue is the quantity (X) times price (P):
TR = P⋅X
=> (100−0.01X) X
=> 100X−0.02X
Then we get get marginal cost, take the partial derivative of the cost function with respect to x:
=> MC=∂c(X)/∂X:50
=> MR=MC/100−0.02X=50/100−50
=> 0.02X
=> 2500units
Then the price of X, plug in the value of x in the inverse demand function and solve for price:
=> P=100−0.01(2500)=$75
And the profit is the difference between Total revenue and Total costs:
=> ∏=TR−TC/TR = P⋅X
=> $75 × 2500 = $187,500
Finally, the total costs, plug in the value of x in the total cost function:
=> TC = 50(2500)+10,000
=> $135,000
=> ∏ = $187,500−$135,000
=> $52,500
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HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!
Answer: It's in the picture.
Step-by-step explanation:
For a particular quadratic function, the leading coefficient is negative and the function has a turning point whose coordinates are (-3,14). Which of the following must be the range of this?
Answer:
y≤-3
Step-by-step explanation:
the parabola is negative and the maximum is -3.
A student has a $50 bill, a $10 bill, a $5 bill, and a $1 bill.
a. If the student must select at least one bill, and the student may select up to all of the bills how many different sub somebody could the student make?
The student can select 1 bill or more than one bill. The student could make 15 different sum of money.
What is permutation?
An arrangement of items in a specific order is referred to as a permutation. Here, the components of sets are arranged in a linear or sequential order.
Given that a student has a $50 bill, a $10 bill, a $5 bill, and a $1 bill.
He must select at least one bill.
To find the number of ways where the order does not matter is nCr.
The number of bills is 4.
Case 1:
Assume that he select 1 bill.
The number of ways to select one bill is ₄C₁ = 4!/1!(4-1)! = 4
Case 2:
Assume that he select 2 bill.
The number of ways to select two bill is ₄C₂ = 4!/2!(4-2)! =6
Case 3:
Assume that he select 3 bill.
The number of ways to select two bill is ₄C₃ = 4!/3!(4-3)! =4
Case 4:
Assume that he select 4 bill.
The number of ways to select two bill is ₄C₄ = 4!/4!(4-4)! =1
The total number of ways is 4 + 6 + 4 + 1 = 15
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i need assistance with this
Answer:
Step-by-step explanation:
Oh I don't really know but I will find it out for you right now
Fatima wants to fill a circular wading pool.she does not have a hose, so she uses a rectangular pail that she fills from a tap. The inside diameter of the pool is 120 cm and it is 25 cm deep. The inside dimension of the pail are 30 cm x 22 cm x 24 cm deep. How many pails of does fatima have to carry to fill the pool to depth of 18 cm?
Fatima needs to carry 13 pails to fill the pool to a depth of 18 cm.
What is are cube and cuboid?Cube and cuboid are three-dimensional shapes that consist of six faces, eight vertices and twelve edges. The primary difference between them is a cube has all its sides equal whereas the length, width and height of a cuboid are different. Both shapes look almost the same but have different properties. The area and volume of cube, cuboid and also cylinder differ from each other.
Volume of a circular pool to a depth of 18cm = Area of circular pool x depth
π[tex]r^{2}[/tex]h
where r = radius of circular pool which is 120/2 = 60cm
h = depth which is 18cm, [tex]\pi[/tex]( constant) = 3.14
Volume (V) = 3.14 x 60^2 x 18 which is 203472 cubic centimeters
volume of each rectangular pail = 30 x 22 x 24 which is 15840 cubic centimeters
If the volume of 1 rectangular pail is 15840 cubic centimeters then the number of pails to fill 203472 cubic centimeters will be
203472/15840 = 12.84 approximately 13 pails
In conclusion 13 pails is needed to fill the pool to the depth of 18cm
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{(-2, 9), (0, -4), (3, 12), (1, 1))
A. Function
B. Not a Function
Answer:
B Not a Function. They are Coordinates
Select the correct answer from each drop-down menu.
Julia and Kellen are participating in a read-a-thon to raise money for charity. The money each of them raises will be a mix of fixed and per-page
donations.
Function / models the total amount, in dollars, that Julia will raise if she reads x pages:
j(x) = 1.65x + 17.31.
Function k models the total amount, in dollars, that Kellen will raise if he reads x pages:
k(x) = 0.90x + 9.28.
The function
If they both read 500 pages, the difference will be $
entum. All rights reserved.
represents the difference between the amounts Julia and Kellen will raise when they both read x pages.
Reset
1
Next
The difference between the amounts Julia and Kellen will raise when they both read x pages is represented by the function j(x) - k(x) = 0.75x + 8.03. And if they both read 500 pages, the difference will be 383.03.
What is subtraction?Subtraction is a mathematic operation. Which is used to remove terms or objects in an expression.
Given, Julia and Kellen are participating in a read-a-thon to raise money for charity.
The money each of them raises will be a mix of fixed and per-page donations.
Function / models the total amount, in dollars, that Julia will raise if she reads x pages:
j(x) = 1.65x + 17.31.
Function k models the total amount,
in dollars, that Kellen will raise if he reads x pages:
k(x) = 0.90x + 9.28.
To find the difference between the amounts Julia and Kellen will raise when they both read x pages:
j(x) - k(x) = 1.65x + 17.31 - (0.90x + 9.28).
j(x) - k(x) = 1.65x + 17.31 - 0.90x - 9.28.
j(x) - k(x) = 0.75x + 8.03.
If they both read 500 pages, the difference will be;
j(500) - k(500) = 0.75(500) + 8.03 = 375 + 8.03 = 383.03
Therefore, if they both read 500 pages, the difference will be 383.03.
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The complete question is:
Select the correct answer from each drop-down menu.
Julia and Kellen are participating in a read-a-thon to raise money for charity. The money each of them raises will be a mix of fixed and per-page
donations.
Function / models the total amount, in dollars, that Julia will raise if she reads x pages:
j(x) = 1.65x + 17.31.
Function k models the total amount, in dollars, that Kellen will raise if he reads x pages:
k(x) = 0.90x+9.28.
The function
If they both re
h(x)=0.75x+26.59
h(x) = 0.75x+8.03
h(x) = 2.55x+8.03
h(x) = 2.55x+26.59
represents the difference between the amounts Julia and Kellen will raise when they both read x pages.
ence will be $
Reset
Next
A taxi ride costs $3 plus $2.50 per mile, m. Write and graph an equation that represents the total cost, c, (in dollars) of a taxi ride.
Answer:
$5.50
Step-by-step explanation:
Add 3.00 plus 2.50.Which is 5.50.
A, B and C are Collinear and B lies between A & C. Determine all that are true:
AB=2, AC=2x + 4, and BC = x + 6.
Find x.
OBC=10
AC=12
Segment Addition Postulate
AC-14
x=4
OBC=11
O Angle Addition Postulate
Ox=5
The required statment that is true is AC = 12 and BC = 10. Option A is correct.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
A, B and C are Collinear and B lies between A & C.
AC = AB + BC
2x + 4 = 2 + x + 6
2x + 4 = x + 8
x = 4
Now,
AC = 8 + 4 = 12
BC = 4 + 6 = 10
Thus, the required statment that is true is AC = 12 and BC = 10. Option A is correct.
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Rose, bill, jean, and candice each received different seat numbers to watch the performance. The seat numbers were either 53, 64, 108, or 216. Candice received the only seat number with a factor of 16. Bill received the seat number that is the greatest multiple of 8 from the group of seats. Rose received the only seat number that is a prime number. Which seat number did jean receive?.
It should be noticed that the seat assigned to Jean as per the given data is 108 .
Jean seat = 108.
The seat numbers were either 53, 64, 108, or 216 based on the information.
The single seat with a factor of 16 went to Candice. The seat is 64 .
In the group of seats, Bill was given the seat with the highest multiple of 8. It's number 216.
Rose was given the sole prime number-containing seat number. It is 53.
Therefore, 108 is the sum that is left.
A number is an arithmetic value that is used to calculate and represent a quantity. Numerical symbols, such as "3," are written to represent numbers. A number system is a logical way of writing numbers that uses digits or symbols to represent them.
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A number truncated to 1 d.p. gives 5.3.
If that number originally had 2 decimal places, write down what that
number could have been.
5.??
Hence, the 2 decimal places a possible value of the number is 5.25, 5.26, 5.27, 5.28, 5.29, 5.31, 5.32, 5.33, 5.34
What are upper and lower bounds?
The maximum and smallest values that a number may have before it was rounded are known as upper and lower limits. They are also known as accuracy limits. Error intervals can be utilised to write the upper and lower bounds.
Given, A number truncated to 1 d.p. gives 5.3
And, the number originally had 2 decimal places
Then, the number could have been
5.25, 5.26, 5.27, 5.28, 5.29, 5.31, 5.32, 5.33, 5.34
These are the possible value of the number.
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round 163 to nearest 10
Answer:
160
Step-by-step explanation:
163
if the number was 5 and over, it'd be 170. But since the number is less than 5, the answer is 160.
Translate the following statement into an algebraic expression:
Use x for your variable.
The sum of the square of a number and fifteen times the number.
Answer:
x^2+15x
Step-by-step explanation:
when doing word problems like these, keywords are "sum" and "square" and "times". They help discern the expression.
hope this helps!!! :3
The coordinates of the vertices of a polygon are (-2, -1), (-2, 3), (2, 3), (2, 0), and (1,-4).
What is the perimeter of the polygon to the nearest tenth of a unit?
Check the picture below.
so hmmm let's only find the lines in red and add them up all
[tex]~\hfill \stackrel{\textit{\large distance between 2 points}}{d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}}~\hfill~ \\\\[-0.35em] ~\dotfill\\\\ (\stackrel{x_1}{-2}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{1}~,~\stackrel{y_2}{-4}) ~\hfill d1=\sqrt{(~~ 1- (-2)~~)^2 + (~~ -4- (-1)~~)^2} \\\\\\ ~\hfill d1=\sqrt{( 3)^2 + ( -3)^2} \implies d1=\sqrt{ 18 }[/tex]
[tex](\stackrel{x_1}{1}~,~\stackrel{y_1}{-4})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{0}) ~\hfill d2=\sqrt{(~~ 2- 1~~)^2 + (~~ 0- (-4)~~)^2} \\\\\\ ~\hfill d2=\sqrt{( 1)^2 + ( 4)^2} \implies d2=\sqrt{ 17 } \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{\LARGE Perimeter}}{4~~ + ~~4~~ + ~~3~~ + ~~\sqrt{18}~~ + ~~\sqrt{17}} ~~ \approx ~~ \text{\LARGE 19.4}[/tex]
please help me on this ASAP!
Answer:
Ellie 69%
Kevin 78%
Therefore Kevin has the redder paint
help meeeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeee!!!!!help meeeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeee!!!!!help meeeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeee!!!!!help meeeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeee!!!!!
Just solve it? (Doing the same thing you did on my question.)
Jen Butler has been pricing Speed-Pass train fares for a group trip to New York. Three adults and four children must
pay $129. Two adults and three children must pay $92. Find the price of the adult's ticket and the price of a child's
ticket. Find the price of the child and adult ticket
Answer:
Adult:19
Child:18
Step-by-step explanation:
Adults: x
Children:y
Equation 1: 3x+4y=129
Equation: 2x+3y=92
Let's now graph our equations on the desmos graphing calculator!!!
Look for the points that meet each other on the graph which is (19,18)
So $19 for an adult and $18 for children
You plant a small tree that begins growing at a constant rate. You measure the tree after 3 weeks and find its height is 33 cm. After 7 weeks, you measure the height of the tree again and it’s height is 38.2cm
a) the constant of variation for this situation
b) how tall is the tree when you planted it (“initial value”)?
c) an equation showing the relationship
d) after how many weeks will the plant be 45 cm tall?
and last question
e) how much time has gone by when the plant is 51.3 cm tall?
Please someone help me with this!!
a. The constant of variation is 1.3.
b. Initially the tree is 29.1 cm.
c. The equation showing this relationship is y = 1.3x + 29.1.
d. After 12.2 weeks many weeks will the plant be 45 cm tall.
e. 16.85 weeks of time has gone by when the plant is 51.3 cm tall.
What are lines and their slopes?We know lines have various types of equations, the general type is
Ax + By + c = 0, and the equation of a line in slope-intercept form is
y = mx + b.
Where slope = m and b = y-intercept.
the slope is the rate of change of the y-axis with respect to the x-axis and the y-intercept is the (0,b) where the line intersects the y-axis at
x = 0.
a. The constant of variation is (y₂ - y₁)/(x₂ - x₁) = (38.2 - 33)/(7 - 3).
= 1.3.
∴ 38.2 = (1.3)7 + b.
38.2 = 9.1 + b.
b = 29.1.
y = mx + 29.1.
b. Now initial constant of variation m = 0.
So, y = 29.1 (cm).
c. The equation showing this relationship is y = 1.3x + 29.1.
d. 45 = 1.3x + 29.1.
1.3x = 15.9.
x = 15.9/1.3.
x = 12.2 weeks.
e. 51 = 1.3x + 29.1.
1.3x = 21.9
x = 16.85 weeks of time have gone.
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you spin two wheels with equal size wedges labeled with numbers 1 through 6. what is the probability that either wheel lands on an odd value ?
The probability that either of spin two wheel lands on an odd value is 1.
Define the term probability?Probability is a way to gauge how likely something is to happen. Even though no event can be predicted with absolute certainty, probability can be used to express how likely it is that it will happen.For the stated question-
Total number marked on the wheel (1 to 6) = 6 numbers.
Total odd number (1, 3, 5) = 3 numbers
Probability of of getting odd number on one wheel = 3/6 = 1/2.
Let the probability of of getting odd number on one wheel P(A).
Then, Probability of of getting odd number on second wheel P(B).
Then,
Only only wheel have the odd number,
P(A∩B) = 0.
Thus,
Probability that either wheel lands on an odd value;
P(A∪B) = P(A) + P(B) - P(A∩B)
P(A∪B) = 1/2 + 1/2 - 0
P(A∪B) = 1
Thus, probability that either wheel lands on an odd value is 1.
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Work out the area of this semicircle. Take pi to be 3.142 and give your answer to 2 decimal places.
The area of the semicircle is 39.275 square cm
How to determine the area of the semicircle?From the question, we have the following parameters that can be used in our computation:
Diameter = 10 cm
Start by calculating the radius of the semicircle
So, we have the following representation
radius = Diameter/2
This gives
radius = 10/2
Evaluate
radius = 5
The area of the semicircle is then calculated as
Area = πr²/2
So, we have
Area = 3.142 * 5²/2
Evaluate
Area = 39.275
Hence, the area is 39.275 square cm
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waiting times to receive food after placing an order at the local subway sandwich shop follow an exponential distribution with a mean of 60 seconds. calculate the probability a customer waits: a. less than 30 seconds. (round your answer to 4 decimal places.) b. more than 120 seconds. (round your answer to 4 decimal places.) c. between 45 and 75 seconds. (round your answer to 4 decimal places.)
Waiting time follows an exponential distribution with mean
μ=60
μ=60 seconds. This implies λ=1μ=160λ= μ1= 601
Let X be the waiting time. for first we have to calculate the probability of customers who wait less than 30 secs.
a. X is less than 30 seconds, then we have to find ,
P(X<X1)=1−e−λX1⇒P(X<30)=1−e−λ×0
=1−e−160×30 =1−e−12=1−0.6065
=0.3935P(X<X 1)⇒
P(X<30)
=1−e −λX 1=
1−e −λ×30 1−e − 601×30 =
1−e − 21
=1−0.6065
=0.3935
b. X is more than 120 seconds, then we have to find less than 120 sec
b. X is more than 120 seconds
P(X>X1)=1−P(X<X1)=1−(1−e−λX1)⇒P(X>120)=1−(1−e−λ×120=e−60×120=e−2=0.135
P(X>X 1)⇒P(X>120)=1−P(X<X 1)=1−(1−e −λX 1)=1−(1−e −λ×120= − 601×120 =e −2=0.135
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(a) A cyclit rode hi bike for 169 min at an average velocity of 3. 53 m/ on a bearing of 450. Find hi total diplacement in km a a vector in the form i and j (3 mark)
The total displacement in km and vector form in the form of i and j is 35.8 a[x] km + 0 a[y] km.
According to the question,
We have the following information:
A cyclist rode his bike for 169 min at an average velocity of 3. 53 m/s on a bearing of 450.
Now, we know that the following formula is used to find the velocity:
Velocity = displacement/time
(We will convert time from minutes into seconds.)
Displacement = 3.53*(169*60)
Displacement = 35794.2 m
Now, the displacement in km will be 35.8 km approximately.
Now, let's take that the bike is moving along the positive x-axis. So, it would be written in the following expression:
Displacement = 35.8 a[x] km + 0 a[y] km
Hence, the total displacement in km and vector form in the form of i and j is 35.8 a[x] km + 0 a[y] km.
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A triangle has vertices at (1, 4), (7, 4), and (7,-2). Select all the points which will lie on the median through the point (7,4).
All the points that will lie on the median through the point (7,4) are given as follows:
(4,1).(5,2).(2,-1).How to obtain the median of the triangle?The median that passes through the point (7,4) is a linear function that also passes through the midpoint of the vertices (1,4) and (7,-2).
The midpoint of two points is given by the mean of it's coordinates, hence the midpoint of the vertices (1,4) and (7,-2) is calculated as follows:
x = (1 + 7)/2 = 4.y = (4 - 2)/2 = 1.Then the two points on the line are given as follows:
(4,1) and (7,4).
Given two points, the slope is calculated as the division of the change in y by the change in x, hence:
m = (4 - 1)/(7 - 4)
m = 1.
Hence:
y = x + b
When x = 4, y = 1, hence the intercept b is obtained as follows:
1 = 4 + b
b = -3.
Then the function is given as follows:
y = x - 3.
And the points that lie on the median are all the points for which the x-coordinate is 3 less than the y-coordinate.
Missing InformationThe complete problem is given by the image shown at the end of the answer.
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Solve the system below by the method of your choice. Show all work.
−4x+4y=−8
4x−6y=16
Answer:
(- 2, - 4 )
Step-by-step explanation:
- 4x + 4y = - 8 → (1)
4x - 6y = 16 → (2)
adding (1) and (2) term by term will eliminate x
0 - 2y = 8
- 2y = 8 ( divide both sides by - 2 )
y = - 4
substitute y = - 4 into either of the 2 equations and solve for x
substituting into (2)
4x - 6(- 4) = 16
4x + 24 = 16 ( subtract 24 from both sides )
4x = - 8 ( divide both sides by 4 )
x = - 2
solution is (- 2, - 4 )