Number of results: 44,624
6-x=2x+9 If you are to solve the equation for x, first try to get the variable on one side of the equation. Let's subtract 2x from both sides to start (whatever operation you do to one side of an equation you must do to the other side as well): 6 - x - 2x = 2x - 2x + 9 6 - 3x...
Monday, January 15, 2007 at 7:05pm by Kayla
Hi, I don't understand this problem also. Find the the relative maximmum and minimum of x^3 - 6x^2 + 15. I'm supposed to do it using a graphing calculator but I still don't see any "lows" or "highs". Relative max and mins will occur when the derivative is equal to zero. The ...
Friday, February 16, 2007 at 7:32pm by Lisa
Pre Cal Check
focus: (0,p) vertex: if not given, then it is assumed (0,0) Directrix: k+p or k-p, i'm not sure I think these are the general equations for the focus, vertex, and directrix of a parabola, but i'm not sure. could someone please check this? thanks.
Sunday, February 25, 2007 at 8:33pm by Marie
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
1) I got a remainder of 5, check your work 2) correct
Saturday, August 23, 2008 at 1:47pm by Reiny
I suspected as much :) Your first function appears to have two zeros, but both are for positive X (approx. 0.5 and 5.0). The second one appears to have a couple of zeros somewhere around -1.4 and +1.4: would you like to check that out? (That's just from a quick sketch of the ...
Sunday, August 31, 2008 at 11:47am by David Q
start with f(z) = i as directed then f(i) = -1 +i - i = -1 check f(-1) =+1 -1 - i = -i do not check f(-i) =-1 -i - i = -1 -2i
Saturday, January 3, 2009 at 12:09pm by Damon
P=2W+2L L=1.5W 480=2W+2(1.5W) solve for W, then go back and solve for L This is Pre-Cal?
Wednesday, January 7, 2009 at 8:27pm by bobpursley
Pre Cal.--Check my work?
Solve the system of equations: x - y - z = 2; x + 2y - 2z = 3; 3x - 2y - 4z = 5? well, you have: 1- x-y-z=2 2- x+2y-2z=3 3- 3x-2y-4z=5 multiply both sides of the equation 1 by 2: x-y-z=2 ===> 2x-2y-2z=4 add this by equation 2: 2x-2y-2z=4 x+2y-2z=3 ==> 3x - 4z = 7 (*) now...
Monday, March 30, 2009 at 5:54pm by David
Together, two printers can print 7500 lines if the first printer prints for 2 minutes and the second prints for 1 minute. If the first printer prints for 1 minutes and the second prints for 2 minutes, they can print 9000 lines together. Find the number of lines per minute that...
Tuesday, March 31, 2009 at 7:56pm by Anonymous
Name all the values of x that are not in the domain of f(x) = (2–x^2)/ (x+ 5) I got only x= -5 because that's the only value that would make the denominator zero.
Tuesday, March 31, 2009 at 8:27pm by Jason
Tuesday, March 31, 2009 at 8:27pm by Reiny
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
the centre is clearly (0,1), the midpoint of these two vertices. and a = 2 so x^2/4 - (y-1)^2/b^2 = 1 but it passes through the point (5,4), so 25/4 - 9/b^2 = 1 -9/b^2= 1-24/4 -9/b^2 = -20/4 b^2/9 = 4/20 = 1/5 b^2 = 9/5 so the hyperbola is x^2/25 - 5(y-1)^2/9 = 1 (check my ...
Saturday, May 2, 2009 at 7:37pm by Reiny
coefs of row 4 1 4 6 4 1 so a^4 + 4 a^3 b + 6 a^2 b^2 + 4 a b^3 + b^4 (3p+r^3)^4 a = 3p b = r^3 a^4 = 81 p^4 check 4 a^3 b = 4*27 or 108 p^3 r^3 check 6 a^2 b^2 = 6*9 or 54 p^2 r^6 check etc
Thursday, May 14, 2009 at 10:43pm by Damon
PRE-CALC still stuck
Pre-cal? V=kT V=kr^2 I=V(1/R)
Sunday, October 18, 2009 at 5:55pm by bobpursley
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
does anyone take pre-cal online ?
Monday, April 16, 2012 at 6:44pm by Mecie
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
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