# Tara is using matrix multiplication to find image points of a translation. She is translating the image 2 units left and 4 units up. Which should be her first matrix?

QUESTION POSTED AT 18/01/2020 - 07:35 AM

Assuming that this is just on a 2-D coordinate plane, we must convert the expressions on to a 3-D plane since translation cannot be done on a 2-D plane. This is done by adding a dummy coordinate that does not change. Let us use "1" for this case.

Matrix:
| 0 0 -2 |(x) = (x - 2)
| 0 0 4  |(y) = (y + 4)
| 0 0 1  |(1) = 1

## Related questions

### 14.A company employee has to print 3145 pages, and the company's printer prints 85 pages per minute. The function f(x)=−85x+3145f(x)=−85x+3145 represents the number of unprinted pages x minutes after the printing begins. What is the practical domain of function f? all whole numbers from 0 to 37 all real numbers from 0 to 37 all real numbers from 0 to 3145 all multiples of 85 between 0 and 3145

F(x) = -85x + 3145...the domain is going to be the x value while the range is the f(x) value.

answer is going to be all whole numbers from 0 to 37

notice if u sub in 37 for x.....
f(37) = -85(37) + 3145
f(37) = - 3145 + 3145
f(37) = 0...that means after 37 minutes, there are no un-printed pages...all the pages have been printed. So ur answer would be greater then 0, but less then or equal to 37.....and they have to be whole numbers.....they cant be all real number because that includes irrational numbers.

ANSWERED AT 16/02/2020 - 07:04 PM

QUESTION POSTED AT 16/02/2020 - 07:04 PM

### 5. What is an equation for the line with slope ￼and y-intercept 9? (1 point) y = ￼x y = 9x y = ￼x + 9 y = 9x + ￼ 6. What is an equation in slope-intercept form for the line that passes through the points (1, –3) and (3, 1)? (1 point) y = 3x + 1 y = x – 3 y = 2x + 5 y = 2x – 5

6.) y - (-3) = (1 - (-3))/(3 - 1) (x - 1)
y + 3 = (1 + 3)/2 (x - 1)
y + 3 = 4/2 (x - 1)
y + 3 = 2(x - 1) = 2x - 2
y = 2x - 2 - 3 = 2x - 5
y = 2x - 5

ANSWERED AT 16/02/2020 - 07:04 PM

QUESTION POSTED AT 16/02/2020 - 07:04 PM

### Which is the correct description of the transformation of triangle JKL to triangle JꞌKꞌLꞌ? A.a 90° clockwise rotation around point A of pre-image JKL B.a 90° counterclockwise rotation around point A of pre-image JKL C.a 180° clockwise rotation around point A of pre-image JKL D.a reflection across point A of pre-image JKL

"A 90° clockwise rotation around point A of pre-image JKL" is the one among the following choices given in the question that is the correct description of the transformation of triangle JKL to triangle JꞌKꞌLꞌ. The correct option among all the options that are given in the question is the first option or option "A".

ANSWERED AT 16/02/2020 - 06:45 PM

QUESTION POSTED AT 16/02/2020 - 06:45 PM

### W hich of the following are you not likely to see on a graph? dependent variable, units, independent variable, prediction ...?

Step-by-step explanation:

On graph, we can display dependent variables, units, independent variables , because they can be expressed in numbers easily.

Whereas prediction is not competent every time to get expressed with numerical terms.

Hence, prediction is not likely to see on the graph.

Thus, Fourth option is correct.

ANSWERED AT 16/02/2020 - 06:40 PM

QUESTION POSTED AT 16/02/2020 - 06:40 PM

### Find the area of the regular polygon. Give the answer to the nearest tenth. dodecagon with a perimeter of 108 cm ...?

A regular dodecagon is a polygon with 12 equal sides.
Length of each side = 108/12 = 9 cm.

Length of the apothem = (9/2)/tan 15 = 9/2tan 15 = 16.79 cm

Area of each triangle = 9/2(16.79) = 75.57 cm^2

Therefore, area of the dodecagon = 12(75.57) = 906.9 cm^2

ANSWERED AT 16/02/2020 - 06:36 PM

QUESTION POSTED AT 16/02/2020 - 06:36 PM

For 10 notebooks, then we could scale the ratio and it will become 10:6.60. So they will cost you $6.60. I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead! ANSWERED AT 16/02/2020 - 06:35 PM QUESTION POSTED AT 16/02/2020 - 06:35 PM ### Is the line through points P(–8, –10) and Q(–5, –12) perpendicular to the line through points R(9, –6) and S(17, –5)? Explain. ...? Answer: No, the line through points P(–8, –10) and Q(–5, –12) is not perpendicular to the line through points R(9, –6) and S(17, –5). Step-by-step explanation: Two lines are called perpendicular to each other if the product of their slope is -1. Since, the slope of a line having end points and is, Thus, the slope of line Joining points P(–8, –10) and Q(–5, –12), While, The slope of line Joining points R(9, –6) and S(17, –5), Since, Thus, the line through points P(–8, –10) and Q(–5, –12) is not perpendicular to the line through points R(9, –6) and S(17, –5). ANSWERED AT 16/02/2020 - 06:35 PM QUESTION POSTED AT 16/02/2020 - 06:35 PM ### Find two fractions with the difference of 1/5 but with neither denominator equal to 5 The two fractions with the difference of 1/5 but with neither denominator equal to 5 is 4/10 and 2/10. ANSWERED AT 16/02/2020 - 06:32 PM QUESTION POSTED AT 16/02/2020 - 06:32 PM ### A rectangular table is two times as long as it is wide. If the area is 50ft^2, find the length and the width of the table. 10ftx5ft ......................................................................................................................................................................................................................................................................................... ANSWERED AT 16/02/2020 - 06:32 PM QUESTION POSTED AT 16/02/2020 - 06:32 PM ### Victoria made some chocolate pudding. For every 2 cups of chocolate, she added 5 cups of milk. The ratio of chocolate to milk in Victoria's chocolate pudding is ____. (1 point) 2:5 because 2 cups of chocolate to 5 cups of milk the ratio would be 2:5 u can't put 5:2 because it's asking the ratio of chocolate milk to chocolate pudding not chocolate pudding to chocolate milk. ~PrinncessAngel~ Happy To Help:D ANSWERED AT 16/02/2020 - 06:23 PM QUESTION POSTED AT 16/02/2020 - 06:23 PM ### Which operation should you perform first when you simplify 175 - (8 + 45 / 3) * 7? A. Addition B. Division C. Multiplication D. Subtraction PLEASE ANSWER THIS IM IN A HURRY Answer: B. Division Step-by-step explanation: We have been given an expression . We are asked to determine which operation will we use first to simplify our given expression. Using order of operations PEMDAS, we will remove parenthesis first. To remove parenthesis, we need to simplify . Therefore, we will use division first to simplify our given expression. ANSWERED AT 16/02/2020 - 06:17 PM QUESTION POSTED AT 16/02/2020 - 06:17 PM ### Given ghi with g(4 -3), H (-4, 2), and I (2, 4), find the perpendicular bisector of HI in standard form GI is the bisector of the perpendicular bisector. ANSWERED AT 16/02/2020 - 06:06 PM QUESTION POSTED AT 16/02/2020 - 06:06 PM ### Which of the four triangles was formed by a translation of triangle XYZ? A B C D Answer: Options A & B Step-by-step explanation: Given is a triangle XYZ in the I quadrant. There are four more triangles A, B,C and D given. We have to find that which one is the translation of XYZ We know that by translation we must get a congruent triangle as XYZ. By simply seeing we can say that C and D are not congruent with XYZ. So these two are eliminated Remaining are A and B. Both A and B are right This is because XYZ is transformed into B by shifting 7 units horizontal to the left. A is the reflection of B about x=-5.5 Thus both A and B are right ANSWERED AT 16/02/2020 - 06:03 PM QUESTION POSTED AT 16/02/2020 - 06:03 PM ### Find two numbers whose sum is 30, and whose difference is 26 Yea umm Im not sure but 2, 28? ANSWERED AT 16/02/2020 - 06:02 PM QUESTION POSTED AT 16/02/2020 - 06:02 PM ### Fill in the blank: To find the values of p, q, r and s, you should start by finding all factor ___ of the leading coefficiant and constant term. Then try them to determine which ones give you the correct product ...? I can be wrong, but I think that the answer is: To find the values of p, q, r and s, you should start by finding all factor pairs of the leading coefficiant and constant term. ANSWERED AT 16/02/2020 - 05:35 PM QUESTION POSTED AT 16/02/2020 - 05:35 PM ### 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] ...? 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 :) ANSWERED AT 16/02/2020 - 05:34 PM QUESTION POSTED AT 16/02/2020 - 05:34 PM ### A manufacturer finds that the revenue generated by selling x units of a certain commodity is given by the function R(x) = 100x − 0.2x2, where the revenue R(x) is measured in dollars. What is the maximum revenue, and how many units should be manufactured to obtain this maximum? ...? The extrema of a function happen when the derivative is equal to zero. So first we calculate the derivative:R′(x)=100−0.4x And then we solve:0=100−0.4x 0.4x=100 x=250 units Now we can substitute back into the original equation to calculate the revenue:R(250)=100(250)−0.2(2502) R(250)=$12500

ANSWERED AT 16/02/2020 - 05:33 PM

QUESTION POSTED AT 16/02/2020 - 05:33 PM

### One number is 3 less than twice another. If their sum is 39, find the numbers. Which of the following systems of equations represents the word problem? A.y = 2x - 3 and y = x + 39 B.y = 2x - 3 and x + y = 39 C.y = 2(x - 3) and x + y = 39 ...?

Let

y------> one number

x-----> another number

we know that

------> equation A

------> equation B

substitute equation A in equation B

Find the value of y

the numbers are and

therefore

the answer is the option B

and

ANSWERED AT 16/02/2020 - 05:32 PM

QUESTION POSTED AT 16/02/2020 - 05:32 PM

### The medians of a triangle are the line segments from each vertex to the midpoint of the opposite side. Find the lengths of the medians of the triangle with vertices at A=(0,0), B=(6,0), C=(4,4) ...?

Step-by-step explanation:

Consider ΔABC with vertices such that P , Q , R are midpoints of sides BC , AC and AB .

We know that midpoint of line segment joining points is equal to

Midpoints P , Q , R :

We know that distance between points is given by

Length of AP :

AP =

Length of BQ :

BQ =

Length of CR :

ANSWERED AT 16/02/2020 - 05:32 PM

QUESTION POSTED AT 16/02/2020 - 05:32 PM

### name the property used in each equation. then find the value of n. 2.) 1·n=8 3.) 28·n=0 4.) 0+n=22 5.) 1/4·n=1

2. n = 8 (Identity property)
3. n = 0 (Zero Property)
4. n = 22 (Additive Identity Property)
5. n = 4 (Fractal property)

ANSWERED AT 16/02/2020 - 05:29 PM

QUESTION POSTED AT 16/02/2020 - 05:29 PM

### Consider the planes 2x + 1y + 5z = 1 and 2x + 5z = 0. (A) Find the unique point P on the y-axis which is on both planes. ( ? , ? , ? ) (B) Find a unit vector u with positive first coordinate that is parallel to both planes. ? I + ? J + ? K (C) Use the vectors found in parts (A) and (B) to find a vector equation for the line of intersection of the two planes,r(t) = ? I + ? J + ? K

B is easy, given 2x + 1y + 5z = 1 and 2x + 5z = 0, normal vectors of those planes are (2,1,5) and (2,0,5), cross product will give the parallel vector, divide by its length so it gives the unit vector

ANSWERED AT 16/02/2020 - 05:29 PM

QUESTION POSTED AT 16/02/2020 - 05:29 PM

### Angle ABD and angle BDE are supplementary. Find the measures of both angles. m angle ABD =5x degrees, m angle BDE = (17x-18)degrees

By definition of supplementary angles,
∠ABD + ∠BDE = 180
5x + 17x - 18 = 180
22x = 198
x = 9

∠ABD = 5(9) = 45°
∠BDE = 180 - 45 = 135°

ANSWERED AT 16/02/2020 - 05:29 PM

QUESTION POSTED AT 16/02/2020 - 05:29 PM

### Translate this word phrase into an equation. one increased by two equals the quotient of nine and three

Here is the equation for this word phrase:
1 + 2 = 9 / 3
Quotient is the result of division.

ANSWERED AT 16/02/2020 - 05:26 PM

QUESTION POSTED AT 16/02/2020 - 05:26 PM

### Suppose cos(π/2−x) =3/5, cos x =4/5 find sin, tan, csc, sec, cot

Cos (π/2 - x) = sin x = 3/5
tan x = sin x / cos x = 3/5 / 4/5 = 3/4
csc x = 1/sin x = 1 / 3/5 = 5/3
sec x = 1/cos x = 1 / 4/5 = 5/4
cot x = 1/tan x = 1 / 3/4 = 4/3.

ANSWERED AT 16/02/2020 - 05:26 PM

QUESTION POSTED AT 16/02/2020 - 05:26 PM

### Find Dxy using the rules for finding derivatives. =(5x^2−8)(9x^2−3x+5)

You can do foil method first, to make it easier and to avoid product rule,
y= 45x^4 - 15x³ + 25x² - 72x² + 24x - 40
Simplify like terms,
y= 45x^4 - 15x³ - 47x² + 24x - 40
Now, find derivative,
dy/dx  = 180x³ - 45x² - 94x + 24

ANSWERED AT 16/02/2020 - 05:13 PM

QUESTION POSTED AT 16/02/2020 - 05:13 PM

### Pine Bluff Middle School is having its annual Spring Fling dance, which will cost $400. The student treasurer reported that the dance fund has$75 left over from last year. Each ticket to the dance costs $4. Let t represent the number of tickets sold. Write an inequality to determine how many tickets must be sold to pay for this year's dance The answer is 400 < or = 4x + 75. ANSWERED AT 16/02/2020 - 05:09 PM QUESTION POSTED AT 16/02/2020 - 05:09 PM ### Little help please? Solve the combined inequality. A car gets 25 miles per gallon in the city and 35 miles per gallon on the highway. What range of miles can the car travel on 4 gallons of gas? 1. How many miles will the car travel in the city. (1 point) 2. How many miles will the car travel on the highway? (1 point) 3. Write the range of the 2 values in interval notation form. ( 2 points) Highway is 140 and the city is 100 the highway is 40 more then the city ANSWERED AT 16/02/2020 - 04:53 PM QUESTION POSTED AT 16/02/2020 - 04:53 PM ### Which problem can be solved using this inequality? x + 5 ≤ 20 A. Beth is purchasing school supplies. She knows that the price for her pencil case is$15. She only has $20 to spend. How much money will she have left after buying the pencil case? B. Beth is purchasing school supplies. She knows that the price for her pencil case is less than$5. She only has $20 to spend. How much money will she have left to spend after buying the pencil case? C. Beth is purchasing school supplies. She knows that the price for her pencil case is$5 more than the cost of a book bag. She only has $20 to spend. Does Beth have enough money to buy the pencil case and book bag? D. Beth is purchasing school supplies. She knows that the price for her pencil case is$5. She only has $20 to spend. What is the most amount of money she can spend on the remaining supplies? Reset Next Question Answer: That would be D Step-by-step explanation: ANSWERED AT 16/02/2020 - 04:47 PM QUESTION POSTED AT 16/02/2020 - 04:47 PM ### How do i find the slope if i know it passes through two points?? Well you would use the equation y2-y1/x2-x1 to find any slope ANSWERED AT 16/02/2020 - 04:36 PM QUESTION POSTED AT 16/02/2020 - 04:36 PM ### The price of a gallon of unleaded gas was$2.89 yesterday. Today, the price fell to $2.82 . Find the percentage decrease. Round your answer to the nearest tenth of a percent If u have$2.89 yesterday so you need to times \$2.82 so I need th0 in the 10th percent so when u times

ANSWERED AT 16/02/2020 - 04:11 PM

QUESTION POSTED AT 16/02/2020 - 04:11 PM