multiplications of matrices
The product of A x B of matrix is
a) [tex]C = \left[\begin{array}{ccc}8 & 12 \\ 10 &15 \\\end{array}\right][/tex]
b) [tex]C = \left[\begin{array}{ccc}3 &6 \\ 4 &8 \\\end{array}\right][/tex]
c) [tex]C = \left[\begin{array}{ccc}-7 &-2 \\ 42 &12 \\\end{array}\right][/tex]
d) [tex]C = \left[\begin{array}{ccc}24 &-96 \\ 15 &-60 \\\end{array}\right][/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 ,
a)
Let the 2 matrices be A and B
The value of matrix A is
[tex]A = \left[\begin{array}{ccc}4\\5\\\end{array}\right][/tex]
The value of matrix B is
[tex]B = \left[\begin{array}{ccc}2&3\\\end{array}\right][/tex]
Now , the dimensions of matrix A is 2 x 1 and of matrix B is 1 x 2
So , matrix multiplication is possible
Now , let C be the result of A x B
And ,
[tex]C = \left[\begin{array}{ccc}4\\5\\\end{array}\right] *\left[\begin{array}{ccc}2&3\\\end{array}\right][/tex]
So , the value of matrix C is calculated as
[tex]C = \left[\begin{array}{ccc}( 4 * 2 ) &( 4 * 3 )\\( 5 * 2 ) &(5 * 3 )\\\end{array}\right][/tex]
On simplifying the matrix , we get
[tex]C = \left[\begin{array}{ccc}8 & 12 \\ 10 &15 \\\end{array}\right][/tex]
Therefore , the value of matrix C is [tex]C = \left[\begin{array}{ccc}8 & 12 \\ 10 &15 \\\end{array}\right][/tex]
b)
C be the result of A x B
The value of matrix A
[tex]A = \left[\begin{array}{ccc}3\\4\\\end{array}\right][/tex]
The value of matrix B is
[tex]B = \left[\begin{array}{ccc}1&2\\\end{array}\right][/tex]
Now , let C be the result of A x B
And ,
[tex]C = \left[\begin{array}{ccc}( 3 * 1 ) &( 3 * 2 )\\( 4 * 1 ) &(4 * 2 )\\\end{array}\right][/tex]
On simplifying the matrix , we get
[tex]C = \left[\begin{array}{ccc}3 &6 \\ 4 &8 \\\end{array}\right][/tex]
Therefore , the value of matrix C is [tex]C = \left[\begin{array}{ccc}3 &6 \\ 4 &8 \\\end{array}\right][/tex]
c)
C be the result of A x B
The value of matrix A
[tex]A = \left[\begin{array}{ccc}-1\\6\\\end{array}\right]\\[/tex]
The value of matrix B
[tex]B = \left[\begin{array}{ccc}7&2\\\end{array}\right][/tex]
Now , let C be the result of A x B
And ,
[tex]C = \left[\begin{array}{ccc}-7 &-2 \\ 42 &12 \\\end{array}\right][/tex]
Therefore , the value of matrix C is [tex]C = \left[\begin{array}{ccc}-7 &-2 \\ 42 &12 \\\end{array}\right][/tex]
d)
C be the result of A x B
The value of matrix A
[tex]A = \left[\begin{array}{ccc}8\\5\\\end{array}\right]\\[/tex]
The value of matrix B
[tex]B = \left[\begin{array}{ccc}3&-12\\\end{array}\right][/tex]
Now , let C be the result of A x B
And ,
[tex]C = \left[\begin{array}{ccc}24 &-96 \\ 15 &-60 \\\end{array}\right][/tex]
Therefore , the value of matrix C is [tex]C = \left[\begin{array}{ccc}24 &-96 \\ 15 &-60 \\\end{array}\right][/tex]
Hence , the matrix multiplication is done and the results are given
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Find the value of a b c if 173a i diviible by 9, 173b i diviible by 11 and 173c i divible by 6
The value of a , b and c are 7, 11 and 1 respectively.
173a is divisible by 9.
Rule of divisible by 9 is:
The number itself is divisible by 9 if its digit sum is also divisible by 9.
digits sum = 1+7+3+a = 11+a.
11+a is divisible by 9. a can be 7 so that 11+7 = 18 is divisible by 9.
minimum positive value of a = 7.
173b is divisible by 11
Rule of divisible by 11 is:
A number is completely divisible by 11 if the difference between the sum of its alternative digits is divisible by 11.
sum of its alterative digits:
1+3 =4
7+b =7+b
difference of alternative digits sum = 7+b-4 = b+3 is divisible by 11 b = 8
so that 8+3 = 11 is divisible by 11.
minimum positive value of b = 11.
173c is divisible by 6.
Rule of divisible by 11 is:
Any number that can be divided by both 2 and 3 is also divisible by 6.
sum of digits of number = 1+7+3+c = 11 + c if divisible by 2 then it should be even if we put c = 1 , 11+1 = 12 which is divisible by both 2 and 3.
minimum positive value of c = 1.
So the value of a ,b and c are 7, 11 and 1 respectively.
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Circle a ha a diameter of 9cm. Cirlce b ha a radiu of 5 cm. 1. Which circle ha a larger circumference? 2. About how many centimeter larger i it
Circle B will have larger circumference by 3.14 centimeter
What is Circumference of Circle ?The distance along a circle's perimeter is referred to as its circumference. In other words, the circumference of a circle is equal to the length of a straight line formed by opening up the circle.
The circumference of the circle is = 2пr where r is radius
According to the information
Circle A has diameter = 9 cm
Radius of circle A = [tex]\frac{9}{2}[/tex] cm
Circumference of Circle A = 2пr
= 2 × 22/7 × 9/2
= 28.28 centimeter
Circle B has radius = 5 cm
Circumference of circle B = 2 × 22/7 × 5
= 31.42 centimeter
Circle B will have larger circumference by 3.14 centimeter
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Find the demand function for the marginal revenue function. Recall that if no items are sold, the revenue is 0.R′(x) = 0.06x^2 − 0.05x + 138
The demand function for the marginal revenue function is found as; p(x) = 0.02x² - 0.025x + 138.
Explain the term revenue function?The relationship between the demand function p(x) as well as the revenue function R(x) is given by the equation R(x)=xp(x), where x represents the quantity of units sold.In order to get the revenue function, we shall integrate the marginal revenue function R′(x).For the given question;
R′(x) = 0.06x² − 0.05x + 138
R(x) = ∫R′(x)dx
R(x) = ∫[0.06x² − 0.05x + 138] dx
R(x) = 0.06x³/3 - 0.05x²/2 + 138x + C
R(x) = 0.02x³ - 0.025x² + 138x + C
If R(0) = 0, revenue is 0.
Put x = 0.
0.02x³ - 0.025x² + 138x + C = 0
c = 0
Thus,
R(x) = 0.02x³ - 0.025x² + 138x
Factorizing the function,
R(x) = 0.02x³ - 0.025x² + 138x
R(x) = x(0.02x² - 0.025x + 138)
R(x) = xp(x) . Thus,
p(x) = 0.02x² - 0.025x + 138
Therefore, the demand function for the marginal revenue function is found as; p(x) = 0.02x² - 0.025x + 138.
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Hi can someone solve this with steps?
Answer:
42
Step-by-step explanation:
Given function:
[tex]f(x)=4x^4-2x^3-3x^2+3x[/tex]
Use the method of synthetic substitution to find the value of the function when x = 2.
Place the value of x in the left box and write the coefficients of the function in descending order, remembering to write a zero for the coefficient of any missing term.
(As there is no constant term in this function, the last coefficient should be written as zero).
[tex]4x^4-2x^3-3x^2+3x[/tex]
[tex]\begin{array}{c|ccccc}2&4&\:\:-2&\;\;-3&\;\:\:\:\:3&\;\;0\\\cline{1-1} \end{array}[/tex]
Bring the leading coefficient down:
[tex]\begin{array}{c|ccccc}2 &4&-2&-3&3&0\\\cline{1-1}&\downarrow &&&\\\cline{2-6}&4\end{array}[/tex]
Multiply the number you brought down with the number in the box and put the result in the next column (under the -2):
[tex]\begin{array}{c|rrrrr}2 &4&-2&-3&3&0\\\cline{1-1}&\downarrow &8&&\\\cline{2-6}&4\end{array}[/tex]
Add the two numbers in the second column together and put the result under them in the bottom row:
[tex]\begin{array}{c|rrrrr}2 &4&-2&-3&3&0\\\cline{1-1}&\downarrow &8&&\\\cline{2-6}&4&6\end{array}[/tex]
Repeat:
[tex]\begin{array}{c|rrrrr}2 &4&-2&-3&3&0\\\cline{1-1}&\downarrow &8&12&\\\cline{2-6}&4&6&9\end{array}[/tex]
[tex]\begin{array}{c|rrrrr}2 &4&-2&-3&3&0\\\cline{1-1}&\downarrow &8&12&18\\\cline{2-6}&4&6&9&21\end{array}[/tex]
[tex]\begin{array}{c|rrrrr}2 &4&-2&-3&3&0\\\cline{1-1}&\downarrow &8&12&18&42\\\cline{2-6}&4&6&9&21&42\end{array}[/tex]
The last value, 42, is the value of the function when x is 2.
Therefore,
[tex]f(2)=4x^4-2x^3-3x^2+3x=42[/tex]
168 divided by 12 array
168 divided by 12 is 14.
Explanation:14 <-- quotient
---
168
12
--
48
48
--
<-- remainder
What is Long Division?The mathematical procedure for splitting big numbers into more manageable groups or sections is known as long division. A difficulty can be solved by breaking it down into manageable parts. Dividends, divisors, quotients, and remainders all exist in long divisions. When solving an issue involving long division, the dividend—a high number—is divided by the divisor, a smaller number. The excess amount that cannot be divided yields the quotient, which is known as the residual. Long Division Calculator Multiplication, which is the opposite of division, addition, and subtraction are the other fundamental arithmetic operations. You can uncover common factors and simplify fractions using the arithmetic skill of long division.To learn more about Long Division refer to:
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question is in the screenshot
The base length of the isosceles triangle is 23. Therefore, the correct option is C.
How to find the side of an isosceles triangle?An isosceles triangle is a triangle with (at least) two equal sides. It also has two angles equal to each other.
The base angle of an isosceles triangle is equal in length.
The legs of an isosceles triangle are equal. Therefore,
3x - 1 = - 3x + 41
3x + 3x = 41 + 1
6x = 42
divide both sides by 6
x = 42 /6
x = 7
Let's find the length of the base side.
Therefore,
4x - 5
where
x = 7
4(7) - 5 = 28 - 5 = 23
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Cara wants to build an 80 foot long rectangular sheep pen in back of her barn. If she bought 180 feet of fencing and used her barn wall as one side of the pen equaling the width, what would be the area of the sheep pen?.
180 ft2 be the area of the rectangular sheep pen .
What is rectangle?
A quadrilateral is a shape with two opposed sides that are equal and parallel.
There are four 90-degree angles on its four sides, making it a four-sided polygon. The shape of a rectangle is two dimensional.
Length of the sheep pen =60ft
150 ft of fencing bought
One side of rectangular sheep pen is covered with barn which is equaling the width
perimeter of rectangular sheep pen = 2(length +width)
length need to covered is 2 Length+ width
150 =2 length+width
150 = 2 x60 +width
150-120= width
30= width
Area of rectangle = 60 x 30
= 180 ft2
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Milan runs7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes
Answer:
2.8 Miles in 24 minutes
Step-by-step explanation:
60 / 24 = 2.5
2.5 / 7 = 2.8
Answer:
17.5mi
Step-by-step explanation:
7mi = 17.5mi
60min = 24min
60/24=2.5
2.5*7=17.5
A university will spend Atmos 6000 by monitors and keyboards for computer lab each monitor will cost $200 and each keyboard will cost $25 which inequality represents all possible combinations of x the number of monitors and y the number of keyboards the university can buy for the computer lab?
Answer:
Answer: 200x + 25y <= 6000
Step-by-step explanation:
1 and (-1,-4) y-intercept
The graph's intersection with the x-axis is known as the x-intercept. The graph's intersection with the y-axis is known as the y-intercept.The y-intercept is (0,-4).
what is X-intercept and Y intercept?To find Y intercept substitute x=0;
here X interept is (1,-1)
Y intercept (0,-4)
The x- and y-intercept visual concept is quite straightforward. Where the graph crosses the x-axis is known as the x-intercept, and the y-intercept is where the graph crosses the y-axis. A line's X-intercept provides information about the point where the x-axis is crossed.In a similar manner, the line's y-intercept represents the location at which the y-axis is crossed. In a given equation, only one intercept can be determined at once.The point at which a line crosses the x axis is known as the line's x-intercept. (i.e., in the case where y = 0) X interept=(x,0)The point at which a line crosses the y axis is known as the line's y-intercept. (i.e. in the case where x = 0) Y interept =(0,y)To learn more about X-intercept and Y intercept refer to:
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An artist sold 128 pieces of jewelry. Of the pieces of jewelry sold, 32 were rings. What percent of the pieces of jewelry sold were rings?
Step-by-step explanation:
when you have a problem you can tell me please follow
the sum of 5 and a number x
show work
Answer:
x+5 or 5+x
Step-by-step explanation:
It seems we are looking for a math expression that is the same as English expression you wrote.The sum is what we get when we add numbers. Therefore, we could restate the English expression as what do we get when we add 5 to the number x? While we do not know what specific number x represents, we do know that if we add 5 to the number x we get 5 plus x. Now the question can be restated as, "How do we write 5 plus the number x?" Do you know the answer now? Does 5 + x sound right? How about x + 5? Both of these expressions are correct as they both represent the sum of 5 and the number x.
(1). 7/10 - 2/5
(2). 3/4 + 5/6
(3). 17/9 - 11/12
(4). 2/3 + 1/4 - 7/12
Answer:
1. 3/10
2. 19/12
3. 35/36
4. 1/3
Step-by-step explanation:
I don’t feel like typing
Answer:
A
Step-by-step explanation:
mass / volume
m/v
Answer: d = m/V
Step-by-step explanation: density is the mass divided by volume or d= m/V
whats 1+1 im really confused about this one
can someone tell me.
Answer:
2
Step-by-step explanation:
take an example like
u have one apple then someone gives you another one apple
when you add them,
you get 2
Jon bought 6 gallons of gas for $24
A( Find the cost of 1 gallon
B( Find the cost of 12 gallons
Answer:
A/ $4 for 1 gallon
B/ $48
Step-by-step explanation:
Take 24 divided by 6 = $4 per gallon
Then take 4 times 12 = $48 for 12 gallons
If you can please give me a Brainliest, thank you!
Please name these last two shapes
Answer:
Step-by-step explanation:
Square, Irregular shape
Billy went to the hardware store and bought 18 identical sections of pipe. The total length of the pipes was 45. 18 meters. How long was each pipe?.
The length of each identical section of pipe is 2.51 meters
Define Algebraic Expression
In mathematics, an expression that includes variables, constants, and algebraic operations is known as an algebraic expression (addition, subtraction, etc.)
Given,
Billy bought 18 identical sections of pipe.
Total length of pipes = 45.18 meters
The length of each pipe is = 45.18 / 18
= 2.15 meters
Hence, the length of each identical section of pipe is 2.51 meters
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Drag each label to the correct location in the equation. not all tiles will be used.
the density of mercury is 13.6 grams per cubic centimeter. complete the steps for converting 13.6 g/cm3 to kg/m3. (1 kg = 1,000 g, 1 m3 = 106 cm3)
13,600 10^6 1,360 1 g 1 kg 1 m3
13.6g/cm^3 x ( )/1000g x ( ) cm^3/( ) = ( ) kg/m^3
As per the given equation, the resulting conversion is written as,
13.6g/cm³ x 1kg/1000 x 10⁶cm³/m³ = 13600kg/m³
Equation:
An equation consist the value of the variable, numbers and the constants.
Given,
Here we have the density of mercury is 13.6 grams per cubic centimeter.
Now, we have to convert this one into kg/m3.
Here the process of conversion of 13.6 g/cm3 to kg/m3
We know that, 1 Kg of weight is equal to 1000 grams of weight
Then it can be written as
=> 1 g = 1 kg/1000
Then the first blank (numerator) will be filled with 1 Kg
Similarly, 1 meter is equal to 100 centimeter
So, for cubic unit it can be written as,
=> 1 cm³ = 1m³/100³
It can be simplified as,
=> 1 cm³ = 1m³/10⁶
Now, the second blank (numerator) will be filled with 10⁶
Finally, the third blank (denominator) will be filled with 1m³
Therefore, the last blank will be 13600
Hence, we have find the all the values on the blanks.
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You have 2 different aving account. For Account A, the imple interet earned after 15 month i $9. 25. For Account B, the imple interet earned after 18 month i $25. 20. If the interet rate i 3. 7% for Account A and 2. 4% for Account B, how much i the principal in each account? Which account earned you the mot interet the firt month? Explain your anwer
The principal amount for account A is $200 and for account B is $700.
Account B earns more simple interest than account B in first month.
Given,
Account A
Simple interest, SI = $9.25
Time period, T = 15 months = 1 1/4 = 5/4 years
Rate of interest, R = 3.7%
Account B
Simple interest, SI = $25.20
Time period, T = 18 months = 1 1/2 = 3/2 years
Rate of interest, R = 2.4%
We have to find the principal amount for each account and also the account which earned the more simple interest;
Here,
Simple interest, SI = PRT/100
P is the principal amount
Now,
Account A.
Principal amount,SI = PRT/100
9.25 = (P × 3.7 × 5/4) / 100
9.25 × 100 = P × 4.625
P = 925/4.625
P = $200
Simple interest for first month,SI = PRT/100
SI = (200 × 3.7 × 1/15) / 100
SI = 2 × 3.7 × 1/15
SI = $0.493
Next,
Account B
Principal amount,SI = PRT/100
25.20 = (P × 2.4 × 3/2) / 100
25.20 × 100 = P × 3.6
P = 2520/3.6
P = $700
Simple interest for first month,SI = PRT/100
SI = (700 × 2.4 × 1/18) / 100
SI = 7 × 2.4 × 1/18
SI = $0.933
Here,
The principal amount for account A is $200
The principal amount for account B is $700
Simple interest for first month;
Account A = $0.493
Account B = $0.933
Therefore,
In first month account B earns more simple interest than account A.
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how do negative exponents represent reapeated division NEEED THIS DONE BEFORE MIDNIGHT 12/4/22
If 1.5 liters of washing up liquid is 2.70 find the cost of 1 liter
1. Write the equation of the parabola that contains these points (-2, -1), (-1, -6), (0, -7), (1, -4)
Answer:
(not a possible parabola)
Step-by-step explanation:
see the plot...
Like ha blue and red ball. Every day he win 2 blue ball and loe 3 red. After 5 day he won the ame amount of blue ball a red. After 9 day he had twice a many blue ball a red. How many red ball he have at the beginning
He started out with 47 balls after winning 2 blue balls and losing 3 red balls.
What is equation?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation. Equal treatment should be given to each party.
Here,
Let the number of blue balls be x and the number of red balls be y,
after 5 days ,
x + 10 = y - 15
after 9 days ,
x + 18 = 2 * ( y - 27 )
subtracting both,
8 = y - 39
y = 47
The number of red balls in beginning is 47.
He had 47 balls in the beginning as he win 2 blue ball and lose 3 red balls.
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161% of 200 = what ?
Answer:332
Step-by-step explanation:Solution for 161 is what percent of 200:
161:200*100 =
(161*100):200 =
16100:200 = 80.5
Now we have: 161 is what percent of 200 = 80.5
Question: 161 is what percent of 200?
Percentage solution with steps:
Step 1: We make the assumption that 200 is 100% since it is our output value.
Step 2: We next represent the value we seek with $x$.
Step 3: From step 1, it follows that $100\%=200$.
Step 4: In the same vein, $x\%=161$.
Step 5: This gives us a pair of simple equations:
$100\%=200(1)$.
$x\%=161(2)$.
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have
$\frac{100\%}{x\%}=\frac{200}{161}$
Step 7: Taking the inverse (or reciprocal) of both sides yields
$\frac{x\%}{100\%}=\frac{161}{200}$
$\Rightarrow x=80.5\%$
Therefore, $161$ is $80.5\%$ of $200$.
can some one help me with this please
Answer:
3⁰ = 1
x⁰ = 1
Step-by-step explanation:
You want powers of 3 filled in your table from an exponent of 4 down to an exponent of 0.
Powers of 33⁴ = 3·3·3·3 = 81 . . . . . . 3 is a factor 4 times
3³ = 3·3·3 = 27 . . . . . . . 3 is a factor 3 times
Each row of the table has 3 being a factor of 3^x one fewer times, so each value of 3^x is 1/3 of the previous value.
The last two rows of the table are ...
3¹ = 3
3⁰ = 1
See the attachment for the whole table.
In general, the meaning of x⁰ is ...
x⁰ = 1
__
Additional comment
In algebra, 0⁰ = 1 is the usual definition. In some contexts (mathematical analysis, calculus), it may be "undefined."
That means x⁰ = 1 for all real numbers x, including x = 0.
Bennett has 107 photographs to place in the school yearbook. He will put the same number of photos on each of the 13 pages. If he can put 4 pictures in a row, how many photographs will not be placed in the yearbook?
Answer:
2 rows on each page equals 104, which means that there would be 3 non-used photos
Step-by-step explanation:
Question 1
Is this a function? Explain, why or why not!
X
-2
-4
-6
y
1
1
1
Edit View Insert Format Tools Table
2 pts
Distribute -2 (6a-6)
Answer:
12 - 12 a
Step-by-step explanation: