Welcome :: Homework Help and Answers :: Mathskey.com

Q&A
Unanswered
Categories
Users
Ask a Question

Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Q&A Categories
BASIC MATH (93)
PRE-ALGEBRA (441)
ALGEBRA 1 (2,220)
GEOMETRY (864)
ALGEBRA 2 (2,751)
TRIGONOMETRY (1,187)
PRECALCULUS (1,903)
CALCULUS (2,802)
STATISTICS (129)
PHYSICS (659)
CHEMISTRY (137)
MECHANICAL ENGINEERING (64)
ELECTRICAL ENGINEERING (207)
Winplot Tutorials (2)

Most popular tags

solving-equations system-of-equations functions math slope-intercept-form physics homework-help trigonometric-identities integration limits substitution-method calculus

13,459 questions

17,854 answers

1,446 comments

805,776 users

Let u = <7, -3>, v = <-9, 5>. Find 4u - 3v.

0 votes

vectors

asked Jul 30, 2014 in TRIGONOMETRY by anonymous

Share this question

Google+ Facebook Twitter LinkedIn Reddit

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 votes

u=<7,-3> and v=<-9,5>

First calculate 4u

4u = 4<7,-3>

=<4(7),4(-3)>

=<28,-12>

Next find 3v

3v=3<-9,5>

=<3(-9),3(5)>

=<-27,15>

4u-3v= <28,-12>-<-27,15>

=<(28-(-27)),(-12-15)>

=<55,-27>

answered Jul 30, 2014 by bradely Mentor

Please log in or register to add a comment.

Related questions

Let u = <-5, 2>, v = <-2, 6>. Find 4u + 3v.

asked Aug 8, 2014 in CALCULUS by Tdog79 Pupil

calculus

Let u = <-8, -9>. Find 7u.

asked Jul 30, 2014 in TRIGONOMETRY by anonymous

vectors

Let u = <-6, 3>, v = <-1, -6>. Find 4u + 2v?

asked Feb 14, 2015 in PRECALCULUS by anonymous

addition-of-vectors

Let u = <-4, -3>. Find the unit vector in the direction of u, and write your answer in component form.

asked Jul 30, 2014 in TRIGONOMETRY by anonymous

vectors
solve-trigonometric-equations

find the component form of the sum of u and v with direction angles θu and θv.

asked Jan 24, 2015 in TRIGONOMETRY by anonymous

component-form
vectors

given u= 2i+j-k and v=i-7j+2k find (u*v)v

asked Oct 31, 2017 in CALCULUS by anonymous

math
vectors

Find (a) u + v, (b) u - v, and (c) 2u - 3v, Then sketch each resultant vector.

asked Jan 24, 2015 in TRIGONOMETRY by anonymous

sum-difference-vectors

Find (a) u + v, (b) u - v, and (c) 2u - 3v, Then sketch each resultant vector.

asked Jan 24, 2015 in TRIGONOMETRY by anonymous

sum-difference-vectors

The three vectors u=3i-j+k, v=i+2j-k, w=i+j+k are drawn from the origin. What is the equation of the plane?

asked Nov 15, 2013 in PRECALCULUS by anonymous Apprentice

vectors
plane
equation

Let U = { 4,5,6,7,8,9,10} and A = {4,6,9,10}.

asked Jun 17, 2014 in ALGEBRA 1 by anonymous

sets

Find the component form of v given its magnitude and the angle it makes with the positive x -axis. Sketch v.

asked Jan 24, 2015 in TRIGONOMETRY by anonymous

component-form
vectors

find the component form of v and sketch the specified vector operations geometrically,

asked Jan 24, 2015 in TRIGONOMETRY by anonymous

component-form
vectors

Let u = <5, 6>, v = <-2, -6>. Find -2u + 5v.

asked Aug 4, 2014 in CALCULUS by Tdog79 Pupil

calculus

Let u = <3, -1>, v = <-6, -6>. Find 9u + 2v.

asked Aug 4, 2014 in CALCULUS by Tdog79 Pupil

calculus

Let u = <-3, 4>, v = <8, 2>. Find u + v.

asked Aug 4, 2014 in CALCULUS by Tdog79 Pupil

calculus

let A={1,2,3,4,5,6,7},B={v,w,x,y,z}.determine the no.of functions F from AtoB where F(A)={v,x}

asked Nov 19, 2013 in PRE-ALGEBRA by dkinz Apprentice

evaluating-functions

given W(-1,5), X(6,-2) an Y(-2,-7) find the co-ordinate of the point if WXYZ is a parallelogram

asked Nov 20, 2013 in CALCULUS by angel12 Scholar

vectors

v=9i-12j find ||v||

asked Apr 3, 2019 in PRECALCULUS by anonymous

vectors

find the value of S so that V+SW is perpendicular to W

asked Sep 15, 2018 in CALCULUS by anonymous

vectors
perpendicular-vectors
dot-product-vectors

Find each quantity if v=3i-5j and w= -2i+3j

asked Feb 15, 2017 in PRECALCULUS by anonymous

vectors
addition-of-vectors

Copyright © 2024 MATHSKEY. All Rights Reserved. Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ

...