Search: Pre Cal/Vectors

Number of results: 10,830

Pre-Cal
Use the law of cosines to find the angle of Q between the given vectors. v=3i + j w=2i - j
Sunday, March 28, 2010 at 5:08pm by Hannah

pre-Cal(Please help)
Use the law of cosines to find the angle Q between the given vectors. v = 3i + j w = 2i - j
Wednesday, March 31, 2010 at 5:34pm by Hannah

Pre Cal
Find the manitude of each vetcor, and write each vector as the sum of the unit vectors. Choose either one (2,6) or (4,-5) Thank you
Saturday, January 9, 2010 at 9:13pm by amy

Pre-Cal
Yes I am, but I don't understand it. I don't have a teacher to teach me. I do my work online, and I just need 2nd semester of pre-cal to graduate.
Saturday, March 17, 2012 at 9:29pm by Adrianna

pre cal
eh? plug in 6 for x. What do you get? If you're taking pre-cal, this should be a no-brainer.
Wednesday, June 19, 2013 at 3:19pm by Steve

Pre Cal/Vectors
Can someone show the steps involved in figuring out this type of problem? Given the magnitudes of vectors u and v and the angle Ό between them, find the magnitude of the sum u + v to the nearest tenth and the angle that the sum vector makes with u to the nearest ...
Sunday, July 24, 2011 at 8:06pm by Joe

pre cal
does anyone take pre-cal online ?
Monday, April 16, 2012 at 6:44pm by Mecie

pre-cal
pre-cal? more like algebra I must be the review section for the x-intercept, set y=0: x=1 for the y-intercept, set x=0: y = -2
Sunday, December 9, 2012 at 11:59am by Steve

Pre Cal
The magnitude of each vector is found by taking the square root of the square of each component. ||(2,6)|| = sqrt(2^2 + 6^2) It is usually written as double bars. The vector can also be expressed as the sum of scalar components multiplied by unit vectors. With i = (1, 0) and j...
Saturday, January 9, 2010 at 9:13pm by Marth

Pre Cal/Vectors
Follow the same method and steps as I showed you in http://www.jiskha.com/display.cgi?id=1311551145 except this one is easier since it forms a right-angled triangle, and your parallogram is a rectangle. If the resultant is R, then R^2 = 20^2 + 86^2 = 7796 R = √7796...
Sunday, July 24, 2011 at 8:06pm by Reiny

Pre Cal/Vectors
X = 20. Y = 86. tanA = Y/X = 86/20 = 4.3, A = 76.9 deg. R = X / cosA = 20 / cos76.9 = 88.24 OR R = Y / sinA = 86 / sin76.9 = 88.3 .
Sunday, July 24, 2011 at 8:06pm by Henry

pre-cal/trig
if you get to cosx+sinx=1/square root of 2, well we are doing identities in my pre-cal class and cosx+sinx always equals 1, so it would be 1/square root of 2.
Tuesday, March 4, 2008 at 7:44pm by emily

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?
Tuesday, January 1, 2013 at 6:21am by bhawani

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?
Wednesday, January 2, 2013 at 1:04am by bhawani

PRE-CALC still stuck
Pre-cal? V=kT V=kr^2 I=V(1/R)
Sunday, October 18, 2009 at 5:55pm by bobpursley

pre-calc
Use pairs of points to find two different direction vectors in the plane. eg. (1,4,-5) and (4,2,-3) Now take the cross product of those two vectors. You should have learned an algorithm to do that.
Wednesday, February 17, 2010 at 8:24pm by Reiny

Integrated Physics and Chemistry
The specific heat capacity of copper is 0.09 cal/g°C. How much energy is needed to flow into a 10-gram sample to change its temperature from 20°C to 21°C? A)0.009 cal B)0.09 cal C)0.9 cal D)9 cal
Thursday, April 21, 2011 at 10:29am by Ashley!!

math
80 cal/g x 5 g 400g/cal or 400 cal/g not sure can any one help Neither. 80 cal/g x 5g = 400 cal. The unit g cancels to leave calories. x2+2x-15
Monday, December 11, 2006 at 10:45pm by rena

chemistry
How many calories are required to heat 25.0 g of platinum from 24.5 °C to 75°C (specific heat of platinum = 0.139 J/gK)? 1. 47 cal 2. 42 cal 3. 48 cal 4. 20 cal 5. 80 cal Thank you.
Sunday, November 22, 2009 at 5:30pm by Danny

science
the conversion factor for calories (cal) and joules (J) is: 1 cal = 4.184 J now to convert calories to joules, we multiply 4000 cal by 4.184 J / 1 cal so that the cal unit will be canceled, and the numerator will have the unit J: 4000 cal * 4.184 J / cal = 16736 J hope this ...
Wednesday, October 26, 2011 at 3:09am by Jai

Pre-Cal
Find the standard form of the equation of the ellipse. (Remember center is midpoint between either foci or vertices) (1) 9x^2+4y^2+36x-24y+36=0 (2) Vertices: (0,5)(0,-5) Passes through the point (4,2) Centered at the origin
Sunday, April 19, 2009 at 6:33pm by Cal

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) ...
Sunday, January 23, 2011 at 9:02pm by Brittany

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?
Wednesday, February 13, 2008 at 2:38pm by Anonymous

Pre-Calculus
I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the ...
Saturday, September 17, 2011 at 3:48pm by Cristina

Calculus and Vectors
THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a dot b
Saturday, May 11, 2013 at 3:53pm by Johnny

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.
Saturday, January 5, 2013 at 4:04am by raja

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
Sunday, November 21, 2010 at 8:50pm 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
Sunday, November 21, 2010 at 8:12pm by karla

physics
A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
Monday, September 26, 2011 at 5:17pm by Allison

Science
A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
Monday, September 26, 2011 at 1:29am by Anonymous

Chemistry
You don't need the heat of vaporization to do that calculation. It takes 10g*1Cal/C g*10C = 100 Cal heat release to reduce the temperature ot 0C, and another 80 Cal/g*10 g = 800 Cal to freeze it. The sum is 900 Cal
Saturday, April 17, 2010 at 12:35am by drwls

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.
Wednesday, April 28, 2010 at 4:56pm by Jackiee

physics
You add the vectors. I recommend break each of the distances into N and E vectors, so adding the four vectors can be done in components. I will be happy to critique your thinking or work.
Monday, January 14, 2008 at 3:11am by bobpursley

Physics
Break each of the vectors into N, E components. For instance: vectorC is -C*Cos35 E and C*sin35N do that for all three vectors, then the sum of all three E vectors will be zero, and the sum of all three N vectors will be zero. Solve B, C (B,C is a magnitude of vectors b, C
Monday, January 19, 2009 at 8:59pm by bobpursley

Vectors
THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
Saturday, May 11, 2013 at 3:54pm by Johnny

Calulas and VECTORS
THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
Wednesday, May 19, 2010 at 7:34pm by z...........................

Pre-cal
to do what?
Thursday, December 13, 2012 at 5:57pm by Steve

Pre-cal
thank you
Wednesday, April 18, 2012 at 10:10am by sandra

Pre-Cal
thanks
Saturday, March 17, 2012 at 9:29pm by Adrianna

Pre Cal
Thank you!!!
Monday, February 13, 2012 at 11:06pm by Anonymous

Pre Cal
why and how do you know
Monday, July 25, 2011 at 3:04pm by Ashley

Pre Cal
b)
Monday, July 25, 2011 at 3:04pm by Anonymous

pre cal
4
Sunday, September 19, 2010 at 11:47pm by Anonymous

Pre-Cal
Thank You
Sunday, April 4, 2010 at 5:30pm by Abbey

Pre-Cal
Thank You!!
Sunday, March 28, 2010 at 12:54pm by Hannah

Pre-Cal
Thank You
Saturday, March 27, 2010 at 5:38pm by Abbey

Pre cal
OK. Thanks. =]
Saturday, August 29, 2009 at 6:12pm by Anonymous

Pre. Cal.
yes
Thursday, May 14, 2009 at 10:43pm by Reiny

college maths
Mathematically, you can set up the problem as follow: 232 Cal/1.5 Cup = x Cal/1 cup 1x = 232/1.5 x = 154.7 Cal Another way, this is a no brainer question given the choices below. With 1.5 cup, you know it has 232 Cal, so with only 1 cup, you know the answer should be less than...
Wednesday, December 15, 2010 at 2:16pm by Terry

Chemistry
1.24E7 J x (1 cal/4.184J) = 2.98E6 cal. 12 oz x 2.98E6 cal/80,000 cal = ?oz Gatorade.
Saturday, April 20, 2013 at 7:55pm by DrBob222

physics
if the * is the degrees, then you need to draw the vectors according to their direction. you can use a graph paper and make your own scale: say one unit cube is 10km/hr. then use the protractor to draw the vectors taking an horizontal line as zero degrees. then draw the ...
Thursday, June 6, 2013 at 3:57am by bonjo

Chemistry
Do you know the conversion factor? 1 cal = 4.184 joules and I get 4565 cal. Is that a capital C for cal. In nutrition, especially in the old days, there was a big calorie (actually a kilocalorie or Calorie) and a small calorie (a calorie). If we round the 5 to the even number...
Friday, October 30, 2009 at 7:22pm by DrBob222

pre cal
what is the question?
Wednesday, February 13, 2013 at 5:08pm by bobpursley

Pre-Cal
#3 = B 95
Saturday, March 17, 2012 at 10:21pm by Ryan

Pre-cal
123694587
Thursday, May 6, 2010 at 7:21pm by Anonymous

pre-cal
wrong
Tuesday, June 5, 2007 at 10:24pm by BIGfckNigga

Translation
It is pre-cal
Friday, March 23, 2012 at 4:25pm by Sebastian

pre-cal
no "t" in formula
Monday, January 16, 2012 at 8:07pm by Steve

Pre Cal
this is wrong
Sunday, July 24, 2011 at 8:20pm by Dalidah

Pre Cal
40
Saturday, January 9, 2010 at 5:50pm by Anonymous

Pre Cal
What is the inverse of g(x)= 1/2(x-1)^3-4
Monday, October 25, 2010 at 1:17am by Katie

Pre-cal
I agree
Saturday, May 8, 2010 at 12:23am by Reiny

Pre-Cal :)
You're very welcome!
Saturday, March 27, 2010 at 5:38pm by MathMate

Pre-Cal
Everywhere BUT 0
Thursday, March 25, 2010 at 10:22pm by Damon

Pre Cal
Solve for x 2^x=8^x-3
Tuesday, December 22, 2009 at 2:53am by Raina

Pre-Cal
(-2,1) and (2,1) are the vertices.
Saturday, May 2, 2009 at 7:37pm by Hal

Pre Cal.
correct!
Tuesday, April 21, 2009 at 3:12pm by Reiny

Pre Cal.
è is theta.
Tuesday, April 21, 2009 at 3:12pm by Jamie

pre cal--check
yes
Tuesday, March 31, 2009 at 8:27pm by Reiny

Pre Cal.
correct.
Tuesday, March 31, 2009 at 9:28am by bobpursley

Pre-Cal
xy=2 {{x^2=3+y^2}}
Tuesday, October 21, 2008 at 6:16pm by Ash

another pre cal (logs)
Thank you
Monday, March 31, 2008 at 1:14am by Deb

Pre Cal
thanks so much!
Tuesday, February 19, 2008 at 1:01pm by Kindell

Pre-Cal
What are bearings??
Tuesday, February 5, 2008 at 12:34pm by Daisy M.

Pre-Calculus Vectors
nvm got it
Monday, April 18, 2011 at 7:34pm by PETER

pre cal
19500(1.039)^5 = ?
Tuesday, May 28, 2013 at 11:49am by Steve

Pre-Cal
tan-1=43\9.3
Wednesday, May 1, 2013 at 8:01pm by Anonymous

Pre cal
ix^2-2x+i=0
Sunday, March 17, 2013 at 6:21pm by Anonymous

pre cal
by definition, tan(t) = b/a
Sunday, February 17, 2013 at 2:18pm by Reiny

pre-cal
That's what I thought but was not for sure. thanks!!
Saturday, October 13, 2012 at 5:21pm by ladybug

pre cal
(y^2)^-4y^8 simplify
Thursday, August 30, 2012 at 11:20pm by jennifer

pre cal
7tan^2(pheta)-2=3
Thursday, June 28, 2012 at 10:48pm by Maria

Pre-Cal
YOU SHOULD KNOW HOW TO DO THIS!
Wednesday, March 25, 2009 at 2:29pm by YOU'RE BAD AT MATH

pre-cal
thank you very much
Wednesday, April 18, 2012 at 10:52am by sandra

Pre Cal
cos^2+tan^2=1
Sunday, March 25, 2012 at 7:56pm by Trevion

Pre cal
Thank you sooooo much !!!
Sunday, October 23, 2011 at 8:28pm by Basim

Pre Cal
please explain your b and a.
Monday, July 25, 2011 at 3:04pm by Ashley

L Pre-Cal
yes that was a typo, my bad!
Wednesday, January 26, 2011 at 7:43pm by Norah

pre-cal
16
Thursday, September 2, 2010 at 6:06pm by Ms. Sue

pre-cal
(576^1/2+512^1/3)^1/3
Monday, May 31, 2010 at 7:53pm by Soto

Pre-cal
both are right.
Sunday, May 9, 2010 at 7:59pm by bobpursley

Pre-Cal(urgent)
Nevermind.
Wednesday, March 31, 2010 at 11:06pm by Hannah

Pre-Cal(Please help)
Error
Tuesday, March 23, 2010 at 1:05pm by Mark

Pre-Cal
yes, to your second part
Wednesday, March 10, 2010 at 11:12pm by Reiny

Pre-Cal
1/sec = cos
Friday, March 5, 2010 at 5:42pm by bobpursley

Pre-Cal
Simplify e^3ln2-1
Saturday, January 9, 2010 at 11:02pm by jamie

Pre Cal.
none of them are correct.
Saturday, August 15, 2009 at 4:31pm by bobpursley

Pre Cal.
Both correct!
Thursday, August 13, 2009 at 12:49am by MathMate

Pre Cal.
All correct!
Thursday, August 13, 2009 at 12:45am by MathMate

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