Thursday

February 23, 2017
Number of results: 18,138

**Calculus and vectors-Help~David**

Rectangular prism is defined by vectors (2,0,0)(0,9,5) and (0,0,3). Find the volume. I have done this so far, would anyone please verify this. (2,0,0)(0,9,6) (0-2, 9-0, 6-0) =(-2,9,6) (-2,9,6)(0,0,3) =(2,-9,-3) (2)(-9)(-3)=54 cm^3 Therefore volume is 54 cm^3

*March 22, 2012 by Jake*

**Calculus**

Name two sets of vectors that could be used to span a set in R^3. Show how the vectors (-1,2,0) and (3,4,0) could each be written as a linear combination of the vectors you have chosen.

*April 28, 2010 by Jackiee*

**Calculus and Vectors**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a dot b

*May 11, 2013 by Johnny*

**Calculus and vectors**

A parallelogram is formed by R^3 by the vectors PA=(3,2,-3) and PB=(4,1,5). The point P=(0,2,3). a) what are the location of the vertices? b) what are the vectors representing the diagonals? c) what are the length of the diagonals?

*March 23, 2012 by Melinda*

**Calculus and vectors**

Please, help I don't understand vectors T.T 1. In the prism, assume all dimensions have different lengths, state the following: a) state 3 equal vectors to DC⃗ b) state 4 opposite vectors to BC⃗ ------------------------------------- Here is the prism below, imgur ...

*March 18, 2012 by Melissa*

**art/101**

· Examine the sculptures of Donatello’s David (Early Renaissance), Michelangelo’s David (High Renaissance), and Bernini’s David (Baroque). · Write a 300- to 350-word comparison of the different styles of the David sculptures by these three artists.

*October 27, 2010 by stephaine*

**ela**

I'm doing an essay on how author's language expresses change in character. First, I need to know how David changed from a particular event in the story David's Haircut by Ken Elkes. I want to say that David changed from the haircut or that David changed from the daydream he ...

*January 27, 2014 by lily*

**Calculus/Vectors**

Calculate the area of the parallelogram with sides consisting of the vectors: a = (1,2,-2) b = (-1,3,0)

*May 17, 2011 by Anonymous*

**Calculus and vectors**

Do the vectors (2,0,1),(-2,0,0) and (2,3,0) lie on the same plane? Explain your reasoning.

*March 26, 2012 by Melinda*

**math**

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the dot product of vectors p and q?

*January 2, 2013 by bhawani*

**science**

David is traveling at 20 m/s in a car when the car hits the tree. David comes to a complete stop in 0.4 seconds. What is David's acceleration?

*February 15, 2011 by Nicole*

**math**

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the product of vectors p and q?

*January 1, 2013 by bhawani*

**calculus**

Find two unit vectors that make an angle of 60° with v = 3, 4 (Enter your answer as a comma-separated list of vectors. Round your answers to four decimal places.)

*August 31, 2011 by colt*

**Calculus**

Given vectors u= (1,-1,3) and v= (-4,5,3) find an ordered triple that represents vectors 3u-2v. a.(16,1,-7) b.(11,-13,3) c.(10,-12,1) d.(7,-7,16) I don't want you to straight up give me the answer. I need someone to teach me how to solve this problem. I am home schooled and i ...

*August 23, 2012 by alana*

**Calculus and vectors**

|C|=5 and |D|=8. The angle formed by vectors C and D is 35 degrees, and the angle formed by vectors A and C is 40 degrees. Determine |B|. Could someone explain this question

*March 23, 2012 by Jake*

**Calculus**

How would I find the equilibrant of three vectors? I am given a graph of three different vectors which meet at the point (0,0)

*April 30, 2015 by Sara*

**physics**

Can you help me with this one also? I know how to do it with 3 vectors but I can't seem to draw it with 4 vectors. The magnitudes of the four displacement vectors shown in the drawing are A=16.0 m, B=11.0 m, C=12.0 m, and D=26.0 m. Determine the (1) magnitude and (2) ...

*January 23, 2011 by Brittany*

**math**

Three pupils John, Daniel and David contributed a total of $400 for a party. John contributed $30 more than Daniel while, David contributed three times as much as John. If David contributed $x, which one of the equations below can be used to find David's contribution?

*January 29, 2015 by kudu*

**Calculus**

Two force vectors act on an object and the dot product of the two vectors is 20. If both of the force vectors are doubled in magnitude, what is their new dot product?

*March 29, 2012 by Jake*

**math**

Three pupils John, Daniel and David contributed a total of $400 for a party. John contributed $30 more than Daniel while, David contributed three times as much as John. If David contributed $x, write the equation can be used to find David's contribution?

*January 31, 2015 by kudu*

**CALCULUS!!!!!**

Given the vectors a = (1, 3, 4) and b = (4, 5, -4), what is the angle between the two given vectors to the nearest degree?

*July 2, 2008 by Mathlicious*

**math**

both jamie and her brother david were born on the same day but david was born three years before jamie how can you represent the relationship between james and david's ages in a table,graph, and equation

*October 5, 2015 by sophie*

**Calculus**

Suppose vectors a and b are vectors such that a x b =(3,1,4). What is the cross product of twice of a with twice of b?

*April 17, 2012 by Jake*

**Physics**

Please help me with this its very hard to visualize the problem. The analytical method of adding vectors expressed in terms of their components may be applied to vectors in three dimensions, for which graphical work is inconvenient. Find the magnitude of the resultant of the ...

*September 26, 2016 by Donna*

**Calculus**

Sketch the vector field F⃗ (r⃗ )=2r⃗ in the plane, where r⃗ =⟨x,y⟩. Select all that apply. A.All the vectors point away from the origin. B. The vectors increase in length as you move away from the origin. C. All the vectors point toward ...

*October 10, 2015 by A*

**physics**

Why is the following situation impossible? Emily challenges David to catch a $1 bill as follows. She holds the bill vertically with the center of the bill between, but not touching David’s index finger and thumb. Without warning, Emily releases the bill. David catches the ...

*March 29, 2016 by Anonymous*

**Physics**

2 vectors have same magnitude.The magnitude of the resultant vector of these 2 vectors are same as either of both vectors.What is the angle between 2 vectors?

*November 21, 2014 by Tangy*

**Math - Algebraic Vectors**

Given the vectors: u = [3, 0] v = [-1, 2] a) Express the vector w = [2, 8] as a linear combination of vectors u and v. How do I do this?

*February 13, 2008 by Anonymous*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular

*November 21, 2010 by karla*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular

*November 21, 2010 by karla*

**PreCalculus**

Given vectors u=7i + 3j and v = -4i + 3j, find 5u-4v in terms of unit vectors. I am just beginning the study of vectors and have this problem. Could someone help? Thanks.

*January 29, 2009 by Joanie*

**Calculus**

a) Prove that |A|^2 = A•A for every vector A. (Note, the A's are vectors) b)Use this to show that if |F(t)| is constant for t for all (a,b), then F'(t)•F(t) = 0 for t for all (a,b). (Note the Fs are vectors)

*September 6, 2008 by Mark*

**University Physics**

David is driving at a steady 36.0 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 1.20 m/s2 at the instant when David passes. How far (in m) does Tina drive before passing David?

*September 12, 2011 by Me*

**math**

if vectors a+b+c=0 and modulus of the vectors a, b and c are 3 ,5 and 7 respectively. find the angle between the vectors a and b.

*January 5, 2013 by raja*

**Science**

2 vectors have same magnitude.The magnitude of the resultant vectors is same as either of both vectors.What is the angle between 2 vectors?

*November 21, 2014 by Tangy*

**Calculus and vectors**

Please help/verify the answer. 1. When you add vectors geometrically: a) vectors are aligned tail to tail b) vectors are aligned head to head c) vectors are aligned head to tail d) vectors are put side by side Is the answer D? -------------------------------------- 2. Adding a...

*March 26, 2012 by Melinda*

**Math**

Let a, b, and c be unit vectors, such that a+b+c=0. Show that the angle between any two of these vectors is 120 degrees. I proved this geometrically, but now my teacher wants a proof using vectors, and I don't know what to do.

*June 7, 2016 by Katie*

**Maths**

David is 3 years older than Justin. In 4 years, David will be one and a half times as old as Justin. How old is David now?

*September 9, 2016 by Jonnyko*

**Science- Physics**

David is driving a steady 24.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70m/s^2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

*September 27, 2010 by Kim*

**college- Physics**

David is driving a steady 24.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70m/s^2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

*September 27, 2010 by Kim*

**Physics**

David is driving a steady 21.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.50m/s2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

*September 13, 2013 by Kala*

**Physics**

David is driving a steady 24.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.90m/s2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

*September 26, 2013 by Ronan*

**physics**

David is driving at a steady 30.0 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 m/s^2 at the instant David passes. How far does Tina drive before passing David and what is her speed as she passes him?

*October 7, 2009 by Angela*

**Physics**

Emily challenges her husband, David, to catch a $1 bill as follows. She holds the bill vertically, with the center of the bill between David's index finger and thumb. David must catch the bill after Emily release it without moving his hand downward. If his reaction is 0.2 s, ...

*September 26, 2010 by stacy*

**math**

mia gave 1/3 of her 24 marbles to david how many did david get?

*April 26, 2012 by kendra*

**math**

Mia gave 1/3 of her 24 marbles to david. How many did david get?

*April 26, 2012 by kendra*

**Calulas and VECTORS**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b

*May 19, 2010 by z...........................*

**Calculus**

For which following condition, will the dot product of two vectors be zero? a) If the angle between them is 90°. b) If the angle between them is 0°. c) If the angle between them is 180° d) If the vectors have the same magnitude. Anyone know what the answer is?

*July 4, 2008 by MileyWannabe*

**Calculus and vectors**

Explain how the vector C⃗(Going from the head of B⃗ to the head of A⃗) can be written in terms of vectors A⃗ and B⃗ Given the shape in this url: imgur dot com/5nT3V

*March 18, 2012 by Melissa*

**vectors**

Determine whether each statement is true or false. Provide a brief justification. a. Two lines with parallel direction vectors willnot intersect. b. Two linesthat are perpendicularin R3 willhave perpendicular direction vectors. c. Two linesthat havenon-paralleldirection ...

*June 9, 2010 by Alicia*

**microsoft 2013**

10. David has a small business and is working on an Excel worksheet to help manage his inventory. David realizes cell E14 has the wrong output. To check the problem, David should first select cell E14 and look at the _______ to check the formula. A. range B. Formula bar C. ...

*September 6, 2015 by Lisa*

**Physics Vectors**

two vectors A and B have magnitude such that A>B. We do not know the directions of the vectors. however we can say that the magnitude of the sum A+B must be between? a) B and 2A b)A and A+B c) A-B and A+B d) A-B and A e) B and A+B

*September 27, 2012 by cody*

**Calculus**

Find the inner product of vectors a and b if a = (3, 0, –1) and b = (4, –2, 5,) and state whether the vectors are perpendicular. Find the inner product of vectors a and b if a=(4,-2,-2) and b= (-7,-2,4) , and state whether the vectors are perpendicular.

*September 10, 2012 by horre*

**english**

Does this sound good or do I need an a comma behind David. I think it sounds ok but i would like another person input. My nephew David is a lawyer.

*August 11, 2009 by cindy*

**physical science**

The resultant vector of two particular displacement vectors dose not equal the sum of the magnitudes of the individual vectors. Describe the directions of the two vectors.

*May 2, 2011 by Becky*

**Math**

Matt has twice as many stickers as David. If David has d stickers, and Matt gives David 10 stickers, how many stickers does each have in terms of d?

*February 20, 2009 by Craig*

**12th grade**

prove that normal to plane containing 3 points whose position vectors are a vector,b vector,c vectorlies in direction addition of cross product of vectors b and c and cross product of vectors c and a and cross product of vectors a and b

*September 22, 2009 by parth*

**ms sue checkanswer lang arts**

10. Which of the following sentences is punctuated correctly? David wants to go skiing; however he can’t go with you this weekend. *******David wants to go skiing, however, he can’t go with you this weekend. David wants to go skiing; however, he can’t go with you this ...

*April 3, 2013 by jman*

**Vectors**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b

*May 11, 2013 by Johnny*

**Math: Calculus - Geometric Vectors**

Find the magnitude and the direction of the resultant of each of the following systems of forces using geometric vectors. a) Forces of 3 N and 8 N acting at an angle of 60 degrees to each other. Please help me with this question. I don't understand the wording, so I don't know...

*February 17, 2008 by Anonymous*

**calculus**

Find parametric equations and symmetric equations for the line through P0 and perpendicular to both given vectors. (P0 corresponds to t = 0.) P0 = (4, 3, 0) i + j and j + k Not exactly sure what to do, how do I find what is perpendicular to both vectors?

*August 24, 2011 by lines & planes*

**Math algebra**

David Robertson works as a chemical engineer for U.S. peroxide Corporation. David has 2500 gallons of commercial-grade hydrogen peroxide solution that is 60% pure hydrogen peroxide. How much distilled water(which is 0% hydrogen peroxide) will David need to add to the solution ...

*November 9, 2016 by Selena*

**maths**

david gave 1/5 of his oranges to his brother. his brother got 15 oranges. he gave his friend donny 1/3 of the remainder. a) how much oranges did david have originally? b) how many did donny get? c) how many oranges was david left with?

*November 1, 2016 by joshua*

**Calculus III- Please Help**

2. Use the properties of the dot product to show that (⃗b·⃗c)a−(⃗a·⃗c)⃗b is perpendicular to ⃗c. Must be shown for arbitrary vectors. I have tried to assign each vector (b,a,c) arbitrary identities with unit vectors i,j,k, but I'm ...

*January 30, 2012 by Joy*

**vectors**

ok theres a graph. its like this. basically theres a ray coming from the origin going up and left diagonally at about a 30 degree angle. the question says "for the following vectors draw the component vectors along the x and y axis". what do i do?!

*August 5, 2009 by jawn*

**physics-vectors**

If the magnitude of the sum of two vectors is greater than the magnitude of either vector, then: If the magnitude of the sum of two vectors is less than the magnitude of either vector, then: a. the scaler product of the vectors must be negative b. the scaler product of the ...

*August 6, 2007 by mekeke*

**english**

What needs to be done to correct this sentence? Just what would you do,David,if the situation were reversed? a. THE SENTENCE IS CORRECTLY PUNCUATED b. REMOVE THE COMMA BEFORE DAVID c. REMOVE THE COMMA AFTER DAVID d. REPLACE THE COMMA WITH A SEMICOLON The sentence is just fine ...

*October 18, 2006 by Kourtney*

**English**

Can someone read over my two paragraphs to see if I need to make any changes to make my words stronger or any grammar or punctual mistakes. Live as if tomorrow is your last day, learn as if you live for eternity. I am David is based on a true story by Anne Holm. This story is ...

*June 3, 2015 by thi.a*

**Science**

Two equal vectors are working at a point.The resultant is equal to one of those vectors.Prove that the resultant bisects the angle between the vectors.

*March 14, 2016 by Julekha*

**Maths-Vectors Help!**

Please can you help me as I have just been introduced to your Help Forum: Determine whether the vectors u, v and w given below are linearly independent or dependent where u, v and w are non-colliner vectors such that u=2a-3b+c , v=3a-5b+2c and w=4a-5b+c. thanks. Use exactly ...

*April 16, 2007 by Charles*

**Math**

David and Mike are brothers. David is 33 years old today. This is three times as old as Mike was when David was the age that Mike is today. How old is Mike?

*October 14, 2015 by KC*

**Calculus**

How do you simplify vectors? 1)AB + BC + CD 2) BC - FE - BA + DE - DC Calculus - Steve, Tuesday, September 22, 2015 at 11:39pm AB+BC = AC so, AB+BC+CD = AD BC-DC = BC+CD = BD See if you can use that idea to rearrange +/- terms so the ends line up in order Calculus - Anonymous...

*September 22, 2015 by Anonymous*

**Calculus**

How do you simplify vectors? 1)AB + BC + CD 2) BC - FE - BA + DE - DC

*September 22, 2015 by Anonymous*

**algebra**

David weighs 20lbs.more than katy ,while Jonathon weighs 120lbs. less than three times katy's weight. If David and Jonathon weigh the same amont , how mush does katy weigh? How much much does David and Jonathon weigh?

*February 1, 2017 by Rocky*

**Law(case analysis)**

1. Identify all potential lawsuits (eg. parties and theories) which could occur. Case: David is a former employee of 123 Bytes. He enters the property of 123 Bytes, claiming that the company owes him $1,000 in back wages. An argument ensues, and the 123 Bytes manager, Bill, ...

*January 29, 2007 by Anthony*

**English**

Which of the following sentences is punctuated correctly? David wants to go skiing; however he can’t go with you this weekend. David wants to go skiing, however, he can’t go with you this weekend. David wants to go skiing; however, he can’t go with you this weekend. I ...

*November 30, 2012 by Deborah*

**calculus - vectors**

Show that x dot y = 1/2 ( |x + y^2| - |x|^2 - |y|^2 )

*February 28, 2008 by Michelle*

**Calculus**

Given vectors u= (3, -4, 1) and v= (2, 1, -5) Find: a) u x v b)|u x v|

*May 16, 2010 by Ariza*

**vectors**

If two vectors u and v fit the equation (u − v) • (u − v) = u•u+v•v, how must these vectors u and v be related? What familiar theorem does this equation represent?

*April 12, 2010 by sally*

**Math - vectors**

For what value of t are these two vectors parallel? a) r = 4i + tj and s = 14i - 12j What I Know: vectors are parallel if one is a scalar multiple of the other. I need to find a way that r and s relate by finding what number you can multiply r by to equal s. What I Don't Know...

*September 7, 2016 by Anna*

**linear algebra**

which of the following sets of vectors span R^3? a.){(1, -1, 2), (0, 1, 1)} b.) {1, 2, -1), (6, ,3, 0), (4, -1, 2), (2, -5, 4)} c.) {(2, 2, 3), (-1, -2, 1), (0, 1, 0)} d.) {(1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 1, 1)} can someone show the steps to check for one of them and i ...

*July 19, 2007 by chris*

**physics**

Given the vectors = (19 cm, -7 cm) in green and = (-23 cm, 9 cm) in blue shown on the grid below, calculate the magnitude of the vectors described below and select the correct sketch for each from the choices below. The tail-to-head method is used to represent the operations ...

*October 15, 2013 by butcha*

**Calculus**

Given the vectors u = <−3,7> and v = <5,1>, find -½ u. A. <-1,-4> B. <-4,-1> C. <3/2,-7/2> D. <-3/2,7/2>

*October 28, 2016 by Sade*

**Calculus**

Given the vectors u = <−3, 7> and v = <5,1>, find 3u + 2v.

*October 28, 2016 by Iris*

**math**

david and joseph have a total of 328 marbles. Mathew and david have 176 marbles. joseph has 5 times as many as Mathew. how many marbles does david have?

*March 31, 2013 by shohanur*

**math**

david and joseph have a total of 328 marbles. Mathew and david have 176 marbles. joseph has 5 times as many as Mathew. how many marbles does david have?

*March 31, 2013 by shohanur*

**math**

david and joseph have a total of 328 marbles. Mathew and david have 176 marbles. joseph has 5 times as many as Mathew. how many marbles does david have?

*March 31, 2013 by shohanur*

**Calculus**

Show that the vectors (-1,2,3), (4,1,-2) and (-14,-1,16) do not lie on the same plane

*April 28, 2010 by Blazon*

**Calculus**

Prove each property using Cartesian vectors: A) (u +v) + w = u + (v + w)

*May 8, 2010 by Ariza*

**Calculus**

Find the dot product of the pair of vectors; s=4i +j t=-i -j

*May 8, 2010 by Bobby*

**calculus**

Given vectors u= (t, 2t, 3) and v=(2t, 5t, -1). For what values of t a) are u and v parallel? b) are u and v perpendicular?

*May 16, 2010 by Ashley*

**Calculus**

Given vectors u= (t, 2t, 3) and v=(2t, 5t, -1). For what values of t a) are u and v parallel? b) are u and v perpendicular?

*May 24, 2010 by Ria*

**calculus**

What conditions must be satisfied by vectors u and v for this to be true? |u + v| >|u - v|

*May 24, 2010 by Abigail*

**Calculus**

For which value(s) of k will the dot product of the vectors (k,2k-1, 3) and (k,5,-4) be 7? I did this so far, 2k-1=5 6/2 k=3

*March 29, 2012 by Jake*

**Calculus**

Calculate the dot product of two vectors: m = [4,5,-1] and n = [6,-2,7]

*May 9, 2012 by J*

**calculus**

find the triple scalar product u . (v * w) for the vectors u= (5, 9, -6) v= (5, 8, -1) w= (-2, 8, 3)

*August 30, 2016 by jameson*

**English**

1. This is my cousin David. 2. Please meet my cousin David. 3. Let me introduce my cousin David. (Do they have the same meaing? Are they the expressions we can use when we introduce somebody to others? Why do we have to use 'meet' in this situation? Can't we use other ...

*November 30, 2010 by rfvv*

**LA - 2 questions!!?**

Which word in the following sentence is a reflexive pronoun? As Mark slid towards home plate, he collided with the catcher and hurt himself. toward he himself collided*** Suppose you are reading two novels about boys who are sent to boarding schools. One novel, about David, is...

*October 22, 2014 by SkatingDJ*

**MATH**

David wants to reduce a rectangular image on his computer so that the new image has 25% of the area of the original image. How should David modify the image? Justify your answer.

*February 17, 2014 by Anon*

**physics**

David and his father sat at the end of a see-saw 2 m from the pivot. where should David's mother sit in order to balance the see-saw

*February 18, 2014 by shaz b*