1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
goldfiish [28.3K]
3 years ago
5

Let u=  (-1,3) and w =(2,4) Find the resulting vector of 2u-4w  in component form..

Mathematics
2 answers:
IgorLugansk [536]3 years ago
7 0
Very simple. You just use the vectors as normal numbers, and multiply the coordinates with 2 and 4 like this: 

2*u = 2* (2,4) = (4,8)
4*w = 4* (-1,3) = (-4,12)

(4,8) - (-4,12) = (8,-4)

So the vector has the coordinates (8,-4)

hram777 [196]3 years ago
4 0
\bf \begin{cases}
u=  (-1,3)\\
w =(2,4)\\
----------\\
\textit{scalar multiplication}\\
2u\implies 2(-1,3)\implies 2\cdot -1,2\cdot 3\\
\qquad -2,6\\
4w\implies 4(2,4)\implies 4\cdot 2,4\cdot 4\\
\qquad 8,16\\
----------\\
2u-4w\\
(-2,6)-(8,16)\implies (-2-8\ ,\ 6-16)
\end{cases}
You might be interested in
The line of symmetry is involved in which transformation?
BARSIC [14]

Answer:

Reflection

Step-by-step explanation:

The line of symmetry is involved in reflection transformations- when you reflect a graph, you can see the line that separates the original image from its reflected one.

This line acts as a line of symmetry because it divides the mirror images.

8 0
3 years ago
PLS HELP WILL MARK BRAINLIEST, NO FAKE ANSWERS OR WILL BE REPORTED.
Travka [436]

<u>False</u>

<em>Like</em><em> </em><em>terms</em><em> </em><em>have the same literal coefficients </em><em> </em><em>but</em><em> </em><em>can have different Numerical Coefficients</em>

Hope this helped you- have a good day bro cya)

3 0
2 years ago
Read 2 more answers
If f(x) = 3x – 4, what is f(x) when x = 8?
Delicious77 [7]

Answer:

3(8)-4= 24-4= 20 your answer is 20

Step-by-step explanation:

6 0
2 years ago
A rectangle deck is 12 ft by 14 ft. When the length and width are increased by the same amount, the area becomes 288 sq.ft By ho
Reika [66]
X= increased amount
L= length
W= width

The area formula is Area= L * W. Since length and width are increased, we need to increase each before adding them to the formula.

L= 12 + x
W= 14 + x

L * W= Area
(12 + x) (14 + x)= 288
multiply each parentheses

(12*14) + (12*x) + (x*14) + (x*x) = 288
168 + 12x + 14x + x^2= 288

x^2 + 26x + 168= 288
subtract 288 from both sides

x^2 + 26x - 120= 0
factor with two numbers that add to 26 and multiply to -120

(x - 4) (x + 30)= 0
set each number equal to zero

x - 4= 0
x= 4

x + 30= 0
x= -30


ANSWER: Length and width are both increased by 4 feet. -30 cannot be a solution because it is negative and we know the answer has to be a positive number.

Hope this helps! :)
5 0
3 years ago
Read 2 more answers
There is a bag filled with 4 blue, 3 red and 5 green marbles. A marble is taken at random from the bag, the colour is noted and
zalisa [80]

Answer:

The answer would be just about 61% or 9/14

Step-by-step explanation:

So, it would be a 71% chance to get 1 green out of the bag, but then you have to keep that green out, which then lowers the chances of getting another green out of the bag, then you have to combine the percentages, and then that is the final percentage.

3 0
2 years ago
Other questions:
  • Which set of side lengths form a right triangle?
    11·2 answers
  • Divide and answer in simplest form:
    11·2 answers
  • Southern bank has 2 types of avcounts both accounts pay compound interest everyday saver account interest 2.4% per annum 1234 ac
    7·1 answer
  • Plz help answer a - d 1. Miguel is playing a game in which a box contains four chips with numbers written on them two of the chi
    8·1 answer
  • PLZ HELP ME W DIS ASAP!!!
    8·1 answer
  • Please help!! Figure B is scaled copy of figure A, what is the scale factor from figure A to figure B?
    10·1 answer
  • What’s the equation for f and g?
    10·2 answers
  • What number is 80% of 65%
    12·1 answer
  • Can someone help me out thx
    5·1 answer
  • Factorize <br> 64x³+343y³
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!