Answers
Answer:
Option d.
Step-by-step explanation:
The given matrices are
[tex]A=\begin{bmatrix}3&2&-4\\ \:5&-5&-3\\ \:4&1&1\end{bmatrix}[/tex]
[tex]B=\begin{bmatrix}2&-4&1\\ \:5&-3&2\\ \:4&4&-5\end{bmatrix}[/tex]
We need to find BA.
[tex]BA=\begin{bmatrix}2&-4&1\\ \:5&-3&2\\ \:4&4&-5\end{bmatrix}\begin{bmatrix}3&2&-4\\ \:5&-5&-3\\ \:4&1&1\end{bmatrix}[/tex]
[tex]BA=\begin{bmatrix}2\cdot \:3+\left(-4\right)\cdot \:5+1\cdot \:4&2\cdot \:2+\left(-4\right)\left(-5\right)+1\cdot \:1&2\left(-4\right)+\left(-4\right)\left(-3\right)+1\cdot \:1\\ 5\cdot \:3+\left(-3\right)\cdot \:5+2\cdot \:4&5\cdot \:2+\left(-3\right)\left(-5\right)+2\cdot \:1&5\left(-4\right)+\left(-3\right)\left(-3\right)+2\cdot \:1\\ 4\cdot \:3+4\cdot \:5+\left(-5\right)\cdot \:4&4\cdot \:2+4\left(-5\right)+\left(-5\right)\cdot \:1&4\left(-4\right)+4\left(-3\right)+\left(-5\right)\cdot \:1\end{bmatrix}[/tex]
[tex]BA=\begin{bmatrix}-10&25&5\\ 8&27&-9\\ 12&-17&-33\end{bmatrix}[/tex]
Hence, option (d) is correct.
Related Questions
what is 22 1/2 of 45 as a fraction
Answers
Answer:
1012.5
Step-by-step explanation:
Answer:
2025/2 = 1012 1/2
Step-by-step explanation:
Of means multiply
22 1/2 * 45
Change the mixed number to an improper fraction
45/2 * 45
2025/2
We can leave this as an improper fraction or as a mixed number
1012 1/2
John recently purchased $4,897.00 worth of a stock that is expected to grow in value by 9% each year for the next ten years. Assuming this growth forecast holds, which function will show the value of John's stock in t years?
A.
A(t) = $4,897(1.11)t
B.
A(t) = $4,897(1.09)t
C.
A(t) = 1.09($4,897)t
D.
A(t) = $4,897(1.09)(t)
Answers
Answer:
Step-by-step explanation:
B
Answer:
B
This is true because the value increases from the initial value.
So it is 109%
So you multiply by 1.09
Find an ordered pair (x, y) that is a solution to the equa
4x - y = 5
Answers
Answer:
(xy) (xy) (1−1) (2 3)
Step-by-step explanation:
Slope 4 intercept is -5 we can rearrange with 4x-y=5
We then work out y= -5+ 4x and y=4x−5
We know there is a 4 intercept and we are ready in negatives -5
The slope goes up again by 4 after -1
4+-1 = 3 to find y
We find x by plugging in these values 3(-1) = 2
The required solution as ordered pairs to the given equation 4x - y = 5 are (5/4,0) and (0,-5)
What is the Linear equation?A linear equation is defined as an equation in which the highest power of the variable is always one.
The equation is given in the question
4x - y = 5 ....(i)
We have to determine the ordered pair (x, y) that is a solution to the given equation.
Two that to find are (a,0) and (0,b); these points are/contain the x and y intercepts.
Substitute the point coordinate values for x and y in the equation and solve for the remaining variable.
Substituting into the given equation (i):
(a,0): 4a - 0 = 5 ⇒ a = 5/4 and (a,0) = (5/4,0)
(0,b): 4(0) - b = 5 ⇒ b = -5 and (0,b) = (0,-5)
Therefore, the required solution as ordered pairs to the given equation 4x - y = 5 are (5/4,0) and (0,-5)
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In a classroom there are 15 boys and 13 girls. One of the girls Samantha moved away. What percent of the classroom are girls after Samantha moved.
Answers
Answer: 44%
Step-by-step explanation: First, let's add up all the children in the classroom...
15 + 12 = 27
There's 15 boys, therefore have to divide 15 by 27...
15 ÷ 27 = 0.55 x 100 = 55%
Now, let's divided the total amount of girls...
12 ÷ 27 = 0.44 x 100 = 44%
44 + 55 = 99%
The perecent of girls in the classroom are 44%, I hope this helps!
Which figure is shown?
prism
pyramid
cylinder
cone
Answers
Answer:
That is a cone.
Step-by-step explanation:
I don't think there will be an explanation needed, but remember a pyramid has to be either triangular or rectangular. A cylinder's two bases should be circles, but in this case there's only one.
Answer:
cone
Step-by-step explanation:
49 points!!!!
..................................
Answers
Answer:
Tell me if its blurry i can send it to you again
Step-by-step explanation:
Answer:
Yeah just look at the other answer i got that answer also
Step-by-step explanation:
a bakery offers a sale price of $2.90 for 3 muffins. What is the price per dozen?
PLEASE ANSWER QUICKLY WITH AN EXPLANATION PLEASE!!! I WILL ALSO VOTE U BRAINLIEST AND GIVE U FIVE STARS AND A THANKS!!!!
THANK YOU IN ADVANCE!!!!
Answers
Answer: $11.60 per dozen
Step-by-step explanation:
2.90=3 muffins
Multiply both sides by 4
3x4=12 ( a dozen)
2.90x4= 11.60
Hope this helps :)
Which inequality represents the graph below?
y ≥ 3
y ≤ 3
y ≤ –3
x ≤ 3
Answers
Answer:
sorry i would have answered it but when i downloaded it ,they said i cant open the file.....do you mind snapping it and posting it
A polynomial function has a root of 5 with multiplicity 3, a root of 1 with multiplicity 2, and a root of 3 with multiplicity 7. If th
function has a negative leading coefficient and is of even degree, which statement about the graph is true?
O The graph of the function is positive on (-0, -5).
O The graph of the function is negative on (-5, 3)!
O The graph of the function is positive on (-0, 1).
O The graph of the function is negative on (3,co).
Answers
Answer:
The graph of the function is negative on (3,0)
Step-by-step explanation:
The limiting behavior of a function describes how a function behaves as x ⇒ ±∞. Its behavior is determined by the degree of a polynomial and the sign of its leading coefficient.
Since the function [f(x)] is an even degree polynomial with negative leading coefficient, then f(x) ⇒ -∞ as x ⇒ ±∞. The graph of the function is negative at the root. Since it has a root of 3, The graph of the function is negative on (3,0)
Answer:
The graph of the function is negative on (3, infinity) The answer is D
Step-by-step explanation:
What tone do the underlined phrases help to create
Answers
Answer:
restless and nervous (not sure doe)
Step-by-step explanation:
I did the quiz! <3
Answer:
Restless and Nervous.
Step-by-step explanation:
I did the quiz and got it right.
Solve for x: 3x + 2x + 7 = 32
Answers
Answer:
The answer is x = 5
Step-by-step explanation:
I added similar elements, then I subtracted 7 from both sides, next I divided by 5 both sides, and lastly I got x = 5 as my answer.
5x + 7 = 32
5x = 32 - 7
5x = 25
5:5 ~ 25:5 = x = 5
The answer is x = 5
I hope this helps!
Simplify the expression.
O.O
Answers
Answer:
x raise to 6/7
Step-by-step explanation:
since the base of both the numbers on the numerator is same,
4/7 + 3/7 = 7/7
so, x raise to 7/7
then since the base is same for the numerator and denominator,
7/7-1/7= 6/7
so x raise to 6/7
Identify the pairs of alternate exterior angles in the given figure:figure in answers.
Answers
Answer:
A) 1 & 7, 2 & 8
Step-by-step explanation:
Part A:
A truck delivers 32 cases of soup to a store . Each case holds 8 cans of soupThe store manager plans to place 9 cans on each shelf. What is the fewest number of shelves the manager will need for all of the cans of soup delivered by the truck?
Part B:
The same truck delivers 9 cases of canned corn. Each case holds 36 cans of When the cases are unpacked 15 of the cans are missing. The store manager places 7 cans of corn on cach shelf. What is the fewest number of shelves the manager will need for all of the cans of corn delivered by the truck?
Write out the equations that represent Part A and Part B.
Answers
A triangle has one angle that measures 15 degrees, one angle that measures 44 degrees, and one angle that measures 121 degrees.
What kind of triangle is it?
A.
scalene triangle
B.
right triangle
C.
isosceles triangle
D.
equilateral triangle
Answers
Answer:
A. Scalene Triangle
Step-by-step explanation:
On a Scalene Triangle all angles are different.
What’s the best estimate?
Answers
Answer:
A 4
Step-by-step explanation:
the given numbers round off to 11 and 3. 11/3 is a bit less than 4. Answer A (4) is the best approximation of the answers given.
Answer:
4
Step-by-step explanation:
KFC
first convert it into improper fraction
56/5 divided by 11/4
then do KFC
56/5 times 4/11
224/55
then you divide 224 by 55
which gives you 4
Ms. Oliveda bought a grapefruit for .89c and three oranges. The total cost of the fruit was $2.15. How much did each orange cost?
Answers
subtract the grapefruit from the total cost: $2.15-.89c= $1.26
There are 3 oranges so you have to divide $1.26 by 3
Money always on top so: $1.26/3= $0.42
Each orange costs $0.42
HELP WILL NAME BRAINLIEST
The amount of paint needed to cover a wall is proportional to its area. The wall is rectangular and has an area of 4z2 + 2z square meters. Factor this polynomial to find possible expressions for the length and width of the wall. (Assume the factors are polynomials.)
Answers
Answer:
2z(2z+1)
Step-by-step explanation:
Write the equation for the area and then factor the polynomial to find the possible expression for the length and width.
A = 4z2 + 2z The GCF of 4z2 and 2z is 2z.
= 2z(2z) + 2z(1) Write the terms as products using the GCF as a factor.
= 2z(2z + 1) Use the distributive property to factor out the GCF. Possible expressions for the dimensions of the wall are 2z m and (2z + 1) m.
The requried expression of the length and width is (2z + 1) and 2z.
What are the factors?A number or algebraic expression that evenly divides another number or expression—i.e., leaves no remainder—is referred to as a factor.
Here,
As mentioned in the question, the amount of paint needed to cover a wall is proportional to its area.
The wall is rectangular and has an area of 4z² + 2z square meters. According to the question, we have factored this polynomial to find possible expressions for the length and width of the wall.
So,
Area = 4z² + 2z
Takin common 2z
Area = 2z × (2z + 1)
Comparing the above expression with
Area of rectangle = width × length
From comparison,
Length = (2z + 1)
Width = 2z
Thus, the requried expression of the length and width is (2z + 1) and 2z.
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A farmer has 20 boxes of eggs
There are 6 eggs in each box
Write as a ratio the number of eggs in two boxes to the total number of eggs
Give your answer in its simplest form
Answers
Hope ur help !;(
Which of these shapes is congruent to the given shape?
Answers
Answer:
THis man confused yall the answr id D
Step-by-step explanation:
The shape which is congruent to the given shape is shape D.
What are Congruent Figures?Congruent figures are defined as the figures which are exact copies of each other.
That is, the dimensions and angles are equal.
Here given a shape which is in the shape of a parallelogram.
Options A and C are not congruent figures since they are not even a parallelogram.
Option B is a parallelogram which can be clearly seen that there is more width.
Option E is also not the one since it is smaller in size.
The congruent figure is thus, option D.
Hence the correct option is D.
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The complete question is given below.
easy question.. giving brainliest
x/16 = 10/36
x=_
Answers
Answer:
x=40/9
Step-by-step explanation:
[tex] \frac{x}{16} = \frac{10}{36} |first \: you \: cross \: multiply| \\ x(36) = 16(10) |open \: bracket | \\ 36x = 160 |divide \: both \: side \:by \: 36 | \\ \frac{36x}{36} = \frac{160}{36} \\ x = \frac{40}{9} [/tex]
-1/2x + 1/8 = -1/3x - i/4
Answers
Answer:
x= 4/9
Step-by-step explanation:
-1/(2x) + 1/8 = -1/(3x) - 1/4
-1/(2x)+1(3x)= - 1/4 -1/8
-3/(6x)+2(6x) = -2/8 -1/8
- 1/(6x) = - 3/8
-1*8 = -3*6x
8=18x
x= 8/18= 4/9
Check:
-1/(2*4/9) + 1/8 = -1/(3*4/9) - 1/4
- 1(8/9) + 1/8 = - 1/(4/3)-1/4
-9/8+1/8 = - 3/4-1/4
-1 = -1
Question 5 (5 points)
Find the upper quartile of the data shown on the box-and-whisker plot below
+
+
10
20
30
40
SO
60
7080
90
42
73
56
31
Answers
Answer:
The upper quartile is 71.5
Step-by-step explanation:
on the attachment
Answer: 56
Step-by-step explanation:
Which expression is equivalent to g^5
A. 9 x 5
B. 5 x 5 5 x 5 5 x 5 5 x 5 x 5
C. 9 x 9 x 9 x 9 x 9
D. 9 x 9 x 9 x 9 x 9 x 5 x 5 5 x 5 5 x 5 5 x 5 x 5
Answers
Answer: c
Step-by-step explanation: 9*9*9*9*9
C. 9 x 9 x 9 x 9 x 9 is equivalent to 9⁵
Which expression is equivalent to given espression ?Exponential form : It is an easier way to write repeated multiplication of a number or variable using base(number or variable) and exponents.
Example : 6⁵ is the exponential form of 6×6×6×6×6 (i.e. 5times)
Here, given expression is 9⁵
So, in this expression, 9 multiplied 5 times, i.e. 9×9×9×9×9
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What are the values of X for which the denominator is equal to zero for y=x^2+3/x^2+2
Answers
Answer:
16=x
Step-by-step explanation:
Which graph of ordered pairs shows a proportional relationship?
On a coordinate plane, points (negative 1, 2) and (2, negative 1) are plotted.
On a coordinate plane, points (negative 2, negative 3) and (2, 3) are plotted.
On a coordinate plane, points (negative 2, negative 1) and (2, 3) are plotted.
On a coordinate plane, points (negative 1, 3) and (1, 1) are plotted.
Answers
Step-by-step explanation:
B I gotchu
Answer:
b
Step-by-step explanation:
Help !
Will mark as brainliest
Answers
Answer:
a... 6x^8y^5
b.... 4x^5z^8
c.... 12a^9b^7
d.... 6s^6t^3
The plotted point represents the depth of a scuba diver
in feet How far beneath the water's surface is the
diver?
-20
it
-21
Answers
Answer: —20.7
Step-by-step explanation: Got it right the assignment
Answer:
-20.7
Step-by-step explanation:
did the assignment and got it right good luck <3
Draw a mapping diagram of the set of ordered pairs.
(2,3) (3,5) (4,1) 5,2)
Whoever helps I will brainliest you
Answers
Answer:
Step-by-step explanation:
How many terms are in the expression 2x + 3x + 4 + 2y?
Answers
Answer:
7 terms
Step-by-step explanation:
A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. ... Examples of single terms: 3x is a single term.
Answer:
its 4 terms
the coefficients are numbers combined with the variable and 4 is also a term