determine whether multiplication by A is one to one linear transformation
a)A=[ 1 -1
2 0
3 -4]
b) A=[ 1 2 3
-1 0 4] ...?

Answers

Answer 1
To know if the given matrix is one to one linear transformation, Row reduce the Matrix A and if it has free variables in it it means it is not a one to one linear transformation.

So, we take A and apply Row Operation and get the following matrix
 
1 0 0
0 1 0
0 0 0

As, it has free variables in it, it means it is not a one to one linear transformation.

Hope it helps :)

Related Questions

What is the common difference between the elements of the arithmetic sequence below?
–18, –22.5, –27, –31.5, –36

Answers

All numbers in each number add up to 9, i dont know if you understand me, 
for example:
1+8=9
2+2+5=9
2+7=9
.....

(x+y^2)(2x+3y^2) what is the product

Answers

Use the foil method for this problem (if you don't know what this is google it).

After the foil method, you get - 2x^2 + 3xy^2 + 2y^2 + 3y^4

You combine like terms and put them in order by exponent number:
5y^6 + 2x^2 + 3xy^2
(x+y^2)(2x+3y^2)
=2x^2 + 3xy^2 +2xy^2 +3y^4
=2x^2 + 5xy^2 +3y^4

Can someone solve this and show me the work √5k+2 +8=11

Answers

Simple...

you have: [tex] \sqrt{5k} +2+8=11[/tex]

-->>Isolate the variable...

[tex] \sqrt{5k} +2+8=11[/tex]

[tex] \sqrt{5k} +10=11[/tex]

[tex] \sqrt{5k} +10=11[/tex]
                       -10  -10

[tex] \sqrt{5k} =1[/tex]

What is the opposite of square root? [tex] (x)^{2} [/tex]

[tex] \sqrt{5k} ^{2} = 1^{2} [/tex]

5k=1

Now simply divide-->>

k=[tex] \frac{1}{5} [/tex]

Thus, your answer.

Which shows the conversion of 0.56 mm to inches?

There is 0.03937 inch in 1 millimeter.

A.
0.56 mm × 0.03937 in./mm = 0.022 inches

B.
0.56 mm × 0.03937 in./mm = 2.2 × 10^-3 inches

C.
0.56 mm + 0.03937 in./mm = 0.59937 inches

D.
0.56 mm ÷ 0.03937 in./mm = 14.22 inches

Answers

The answer is letter A: 0.56mm*0.03937inches/1mm = 0.0220472 inches
You can round it 0.022 inches

Which expression has the most number of significant figures?
A. 190
B. 1.8
C. 26
D. 206

Answers

figure are significant if they are a number greater than 0, if they're after a decimal place, or if they're a 0 in between significant numbers

190 has 2 sig figs
1.8 has 2 sig figs
26 has 2 sig figs
206 has 3 sig figs

thus, the answer is 206
D because the 0 is in between the 2 and 6 and in a it can be rewriten as 19. x 10

PLEASE HELP.
The polynomial 16x + 2 is a ___ . Adding the term ____ to the polynomial would make it a trinomial.
1. a) monomial b) binomial c) trinomial
2.) a) xy b) 5 c) 3x

Answers

The polynomial 16x + 2 is a binomial. Adding the term xy to the polynomial would make it a trinomial. Hope this helps! :) 

~Shadow

The polynomial 16x+2 is a binomial.

Adding the term xy to the polynomial would make it a trinomial.

What is monomial?A polynomial with exactly a single term is called monomial.What is trinomial?A polynomial with three terms is called trinomial.

Hence, the polynomial 16x+2 is a binomial.

Adding the term xy to the polynomial would make it a trinomial.

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Jared is 10 years old and Peter is 15 years old. Together they run 150 yards. How far does each brother run.

Answers

10x + 15x = 150 x = 6;
 
Jared = 10(6) = 60

Peter = 15(6) = 90
So it would look like this.

10x +15x = 150y

x is now 6

So 10(6) and 15(6)

Peter ran 60 yards.

Jared ran 90 yards.

I need help on geometry proofs<br />

Answers

Make a table. On the left will be the thing you are trying to prove, on the right will be the proofs. (L=left R=Right) Use correct symbols because I can't enter them through Brainly.

1L. line AS congruent line DS           1R. Given

2L. line BS congruent line Cs            2R.  Given

3L. Angle ASB congruent Angle DSC     3R. VAT or Vertical Angle Theorem 

4L. Triangle ABS congruent Triangle DCS  4R. SAS or Side-angle-side Postulate

5L. angle A congruent angle D                     5R. CPCTC
(Corresponding Parts of Congruent Triangles are Congruent) 


According to the diagram, a 13-foot ladder leans against a 12-foot wall. The distance from the base of the ladder to the base of the wall is 5 feet. Based on this information, which trigonometric ratio has the value 125?

tan C

cos C

tan A

sin A

Answers

The correct answer is tan A

Answer:

tan A

Step-by-step explanation:

Using the notation SOH CAH TOA

sin = opp/hyp

cos = adj/hyp

tan = opp/adj

from the triangle,

hyp = 13 while opp and adj are 12 and 5 respectively

therefore, the ratio 12:5

= tan = opp/adj = 12/5

Gracie Shay wants to buy a new Hummer in 5 years. Gracie estimates the cost of the Hummer will be $28,000. If she invests $12,000 now, at a rate of 6 percent compounded semiannually, she:
1.Will have enough money
2.Will have exactly $16,000
3.Will have $18,000
4.Will have $16,126.80
5.None of these
...?

Answers

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

The answer is no. 4 "Will have $16,126.80". Below is the solution:

12000 ( 1 + 6/200)^10 = 16,126.80 $ 

Answer:

Option 4 - She will have $16,126.80

Step-by-step explanation:

Given : Gracie Shay wants to buy a new Hummer in 5 years. Gracie estimates the cost of the Hummer will be $28,000. If she invests $12,000 now, at a rate of 6 percent compounded semiannually.

To find : Which option she will have ?

Solution :

Using compound interest formula,

[tex]A=P(1+r)^t[/tex]

Where, A is the amount  

P is the principle P=12,000    

Compounded semiannually,

r is the rate 6%=0.06

[tex]r=\frac{0.06}{2}=0.03[/tex]

t is the time 5 years

[tex]t=5\times 2=10[/tex]

Substitute the value,

[tex]A=P(1+r)^t[/tex]

[tex]A=(12000)(1+0.03)^{10}[/tex]

[tex]A=12000\times (1.03)^{10}[/tex]

[tex]A=12000\times 1.3439[/tex]

[tex]A=16126.99[/tex]

The amount she will have $16126.99.

Therefore, Option 4 is correct.

x-intercept=2; containing the point (-5,4), using either the general form or the slope-intercept form of the equation of a line.
...?

Answers

The line contains point (2, 0) and (-5, 4).
y - 0 = (4 - 0)/(-5 - 2) (x - 2)
y = -4/7 (x - 2)
7y = -4(x - 2)
7y = -4x + 8
4x + 7y = 8

Leaving hints or clues about the future events would be considered:

symbolism
metaphor
irony
foreshadowing < this one right?

Answers

Yes. The answer is foreshadowing
yes you are right!!!!!!!!!!!!!!!!!!!!!!!!

What is the radius of a sphere that has a surface area of 196π sq ft?

Answers

4πr^2=196π r^2=49 r=7

logarithm equation. Show the steps to solve. 400/1+e^-x=350

Answers

400 / ( 1 + e^(-x)) = 350
1 + e^(-x) = 400/350
1 + e^(-x) = 8/7
e^(-x) = 8/7 - 1
e^(-x) = 1/7
1/e^(x) = 1/7
e^(x) = 7
x = log ( base e ) 7 or:
x = ln 7
x = 1.94591

Which of these is the first step in constructing a congruent segment?



a.

draw a ray

c.

label two points


b.

draw a point

d.

measure the segment

Answers

Answer:

d.  measure the segment

Step-by-step explanation:

Two segment is said to be congruent segment if the measure of both segments are same and identical to each other.

So, for drawing congruent segments firstly we have to measure the segment.

Then draw a point.

Then label two points

and lastly draw a ray.

help me please i dont know how to solve this

Answers

The answer would be 3^10
The answer is 3^(8/5)

The present value of $12,000 for six years compounded at 6% semiannually is

Answers

Semi-annually means, 2 times in 1 year, so 6 year = 12 times.
Then, it would be: P * R * T /100
12000 * 6 * 12 / 100 = 8640

So, your final answer is $8640

Hope this helps!

mehek14 i would love for you to be the one the help me other ppl u try 2 c:

QUESTION 1

(-3X) + 40 = 38


QUESTION 2

5(X + 6) = 50

QUESTION 3

(1/4)X + 24 = 36


QUESTION 4

(-3/4) X + 2 = (½ )X + 6


QUESTION 5

3X + 14 = 6X +11

QUESTION 6

Using substitution, determine if the given value is the solution to the equation.
(2/3)X + 20 = 100 ; X = 120
Yes
No

QUESTION 7

(-16X) - 34 = 30 ; X = 4
Yes
No

QUESTION 8

3X - 72 = (-2) + X; x=70

yes

no

QUESTION 9

Tony and Kara were keeping track of the ball game. At the end of the game, Tony thought that the home team had scored 5 runs, but Kara thought that they scored 3 runs. The announcer said that the home team's final score was the same as the solution to the equation: 45X - 16 = 5X +104.
Who has the correct score?

Tony

Kara

Neither


QUESTION 10

Michelle wanted to buy a small bag of popcorn. There were two signs by the popcorn bin. One sign said that the large popcorn BAG cost $1.50. The other sign listed the small popcorn bag but the price was missing. The price of the small popcorn bag is the same as the solution to the equation: 4(X + 7) = 30.
What is the price of the small popcorn bag?

Answers

Question 1: X = 2/3
Question 2: X = 4 
Question 3: X = 48
Question 4: ?
Question 5: X = 1
Question 6: Yes
Question 7: No  
Question 8: No
Question 9: Kara (Danvers is always right) < ignore that
Question 10: X = 0.5 
Hope this helped!

Henry initially has 523 baseball cards. He buys 24 cards each month.

What is a explicit rule for the number of baseball cards Henry has in n months?

Answers

Is this what you mean: y = 24x + 528

Answer:

I know I am answering 5 years late but...

the correct answer is

an= 24n + 499

I go to k12 and got this correct on my test :))

Please mark brainlyiest if possible because I just need 2 more brainlyiest until I reach Virtuoso. Also leave a thanks if you found this helpful!

A total of 333 tickets were sold for the school play. they were either adult tickets or student tickets. the number of student tickets sold was two times the number of adult tickets sold. how many adult tickets were sold?

Answers

222 student tickets
111 adult tickets 
That checks out...
2x + x = 333
3x=333
x=111

After setting up a system of equations to represent the total number of tickets and the relationship between student and adult tickets, the equations were solved to find that 111 adult tickets were sold.

The question involves solving a numerical problem where we are given that 333 tickets were sold for a school play, consisting of adult tickets and student tickets. The number of student tickets is twice the number of adult tickets sold. We can express this with two equations and solve for the number of adult tickets.

Let A be the number of adult tickets and S be the number of student tickets. The following equations represent the system we need to solve:

A + S = 333 (Total number of tickets)

S = 2A (Number of student tickets is twice the number of adult tickets)

To solve for A, we can substitute the second equation into the first:

A + 2A = 333

3A = 333

A = 333 / 3

A = 111

Therefore, 111 adult tickets were sold.

Convert 96.5 decaliters to hectoliters

Answers

Since there are 96.5 deciliters and 1 deciliter = 0.1 hectoliters we simply multiply 96.5 to 0.1

96.5 x 0.1 = 9.65

So there are 9.65 hectoliters in 96.5 deciliters

allyson and adrian have decided to connect their ankles with a bungee cord; one end is tied to each person's ankle. the cord is 30 ft long but stretches to 90 ft. they both start from the same location. allyson moves 10 ft/sec and adrian moves 8 ft/sec in the directions indicated. a) after 2 seconds will the slack in the cord be used up? b)determine when the bungee cord first becomes tight, where are the girls located? c) when will the bungee cord first touch the corner of the building? (using similar triangles)

Answers

Final answer:

Allyson and Adrian have a 30 ft long bungee cord that stretches to 90 ft. After 2 seconds, the slack in the cord will not be used up. The bungee cord first becomes tight after 3 seconds, when Allyson reaches the end of the cord and Adrian has stretched it completely. The bungee cord first touches the corner of the building when Adrian has traveled twice the height of the building.

Explanation:

Physics - Elasticity and Motion:

a) After 2 seconds, Allyson would have moved a total distance of 10 ft/sec × 2 sec = 20 ft. Adrian would have moved a total distance of 8 ft/sec × 2 sec = 16 ft. Since the cord is 30 ft long and stretches to 90 ft, after 2 seconds, the slack in the cord would not be used up.

b) To determine when the bungee cord first becomes tight, we need to find the time it takes for one person to reach the end of the cord and the other person to stretch the cord completely. Allyson will take 30 ft ÷ 10 ft/sec = 3 sec to reach the end, while Adrian will take 30 ft ÷ 8 ft/sec = 3.75 sec to stretch the cord completely. Therefore, the bungee cord first becomes tight after 3 seconds, when Allyson is at the end of the cord and Adrian has stretched it completely.

c) To determine when the bungee cord first touches the corner of the building, we can use similar triangles. The ratio of the stretched length of the cord to the original length is the same as the ratio of the horizontal displacement to the height of the building. Let's assume the height of the building is H. Then, (90 ft - 30 ft) ÷ 30 ft = x ÷ H, where x is the horizontal distance traveled by Adrian. Solving for H, we find H = (90 ft - 30 ft) ÷ 30 ft × x = 2x. Therefore, the bungee cord first touches the corner of the building when Adrian has traveled twice the height of the building.

Which of the following are zero-dimensional or one-dimensional figures.? (Check all that apply)

A. Point
B. Angle
C. Ray
D. Plane
E. Segment
F. Line

Answers

Zero dimensional figure = A). Point
One-dimensional figure = C.) Ray E.) Segment F.) Line

Hope this helps!
Final answer:

In geometry, zero-dimensional figures do not extend in any direction and include 'points', while one-dimensional figures extend in one direction and include 'lines', 'segments', and 'rays'. Therefore, the zero or one-dimensional figures in the given options are 'point', 'line', 'segment', and 'ray'.

Explanation:

In geometry, quantities can be zero, one, two, or three dimensional. Zero-dimensional figures are those that do not extend in any direction. The only such geometric figure is a point (Option A). One-dimensional figures, on the other hand, extend in one direction. These include a line (Option F), a segment (Option E), and a ray (Option C), all of which have length but no breadth or height. Therefore, the zero-dimensional or one-dimensional figures from the given options are point, line, segment, and ray.

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The slope of the line below is 2. use the coordinates of the labeled point(3,10) to find the point-slope equation of the line

A. y-10=-2(x-3)
B. y+10=2(x+3)
C. y-10=2(x-3)
D. y+10=-2(x+3)

Answers

i hope this helps you

The point-slope equation of the line is option (C), y-10 = 2(x-3) is the correct answer.

What is slope of a line?

The slope or gradient of a line is a number that describes both the direction X and Y and the steepness of the line. It is the ratio of the vertical change to the horizontal change between any two distinct points on a line.

For the given situation,

The slope of the line, m = 2

The coordinates of the labeled point, (x1, y1) = (3,10)

The point-slope equation of the line is

[tex](y-y1)=m(x-x1)[/tex]

On substituting the above values,

⇒ [tex]y-10=2(x-3)[/tex]

Hence we can conclude that the point-slope equation of the line is option (C), y-10 = 2(x-3) is the correct answer.

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What is the solution to this system: y=2x+3 and -4x+2y=6

No Solutions
Infinite Solutions
(2,4)
(3,5)

Answers

-4x+2y = 6
-4x+2(2x+3) = 6 ... replace y with 2x+3
-4x+4x+6 = 6
0x+6 = 6
0+6 = 6
6 = 6

The last equation is always true regardless of what you pick for x. So there are infinitely many solutions. 

The product of a number and 3, increased by 5, is 7 less than twice the number. which equation can be used to find this number, n?

Answers

The equation is: 3n + 5 = 2n - 7

The equation which can determine the number n for the given condition is 3n + 5 = 2n - 7 and that number will be -12.

How to form an equation?

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

Given that,

The product of a number and 3 = 3n

Increased by 5 = 3n + 5

7 less than twice the number = 2n - 7

Therefore,

3n + 5 = 2n - 7

3n - 2n = -7 - 5

n = -12

Hence "The equation which can determine the number n for the given condition is 3n + 5 = 2n - 7 and that number will be -12".

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Zach is 4 years older than twice his sister Maya’s age.

Let m represent Maya’s age.

Which expression represents Zach’s age?

2m

2m + 4

m + 4

4m + 2

Answers

I hope this helps you

Answer:

It's 2m + 4

Step-by-step explanation:

Will Upvote you!
Evaluate the function rule for the given value.
y = 8 ∙ 3^x for x = 4

A: 96
B: 1944
C: 647
D: 648

Answers

For x = 4, then it means 3 to the fourth power or 3 times 3 times 3 times 3 times 3.  3^4 = 81 and 8 times that is 648.

y(x) = 8 * 3^x where x = 4:

y(x) = 8 * 3^4 = 8 * 81
y(x) = 648

The Function Rule then being that for every value of x there is one and only one value of y. y is the dependent variable and x is the independent variable.

Simplify (10 + 3i)(5 – 2i) ...?

Answers

(10+3i)*(5-2i) = 
50 - 20i + 15i - 6i²
i² = -1
50 - 5i - 6*(-1) = 
50 - 5i + 6 = 
56 - 5i

a triangle has a side length of 4 inches and an area of 18 square inches and a larger similar triangle has a corresponding side length of 8 inches. Find the area of the larger tringle ?
...?

Answers

Final answer:

The area of the larger similar triangle can be calculated using the proportion of the squares of the lengths of the corresponding sides. Using this principle, we find that the area of the larger triangle is 72 square inches.

Explanation:

In mathematics, the area (Area) of similar triangles is proportional to the square of their corresponding sides. Given that the side length of the smaller triangle is 4 inches and the side length of the larger similar triangle is 8 inches, we can set up an equation relating the side lengths and areas of the two triangles. The smaller triangle has an area of 18 square inches, and we'll call the area of the larger triangle A.

The equation is (Area of larger triangle / Area of smaller triangle) = (Side of larger triangle / Side of smaller triangle)2. Substituting the given values, we get (A / 18) = (8 / 4)2. Simplifying the right side of the equation gives us (A / 18) = 4. Multiplying each side of the equation by 18 allows us to solve for A, indicating that the area of the larger triangle is 72 square inches.

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The area of the larger triangle is 72 square inches.

Given that the smaller triangle has a side length of 4 inches and an area of 18 square inches, and the larger triangle has a corresponding side length of 8 inches, we can calculate the ratio of the side lengths:

[tex]\[ \text{Ratio of side lengths} = \frac{\text{Side length of larger triangle}}{\text{Side length of smaller triangle}} = \frac{8}{4} = 2 \][/tex]

Now, we can find the ratio of the areas of the two triangles by squaring the ratio of their side lengths:

[tex]\[ \text{Ratio of areas} = \left(\frac{8}{4}\right)^2 = 2^2 = 4 \][/tex]

Since the area of the smaller triangle is 18 square inches, we can find the area of the larger triangle by multiplying the area of the smaller triangle by the ratio of the areas:

[tex]\[ \text{Area of larger triangle} = \text{Area of smaller triangle} \times \text{Ratio of areas} \] \[ \text{Area of larger triangle} = 18 \times 4 \] \[ \text{Area of larger triangle} = 72 \text{ square inches} \][/tex]

Therefore, the area of the larger triangle is 72 square inches.

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