Search: Pre-Calculus check answers

Number of results: 79,579

Pre-calculus-check answers
1) I got a remainder of 5, check your work 2) correct
Saturday, August 23, 2008 at 1:47pm by Reiny

Pre-calculus-check answers
bewbs
Saturday, August 23, 2008 at 2:15pm by Anonymous

Pre-Calculus-check answers
correct.
Saturday, October 11, 2008 at 2:10pm by bobpursley

Pre-Calculus-check answers
Which of the following results in the graph of f(x)=x^2 being expanded vertically by a factor of 3 and reflected over the x-axis? a) f(x)= (1/3)x^2 b) f(x)= -3x^2 c) f(x)= (-1/x^2)+3 d) f(x)=(-1/3)x^2 Answer: d Thanks for checking my answers
Sunday, August 10, 2008 at 12:26pm by Lucy

Pre-Calculus-check answers
75*32
Saturday, October 11, 2008 at 2:03pm by Anonymous

Pre-Calculus-check answers
then the book is wrong
Saturday, August 30, 2008 at 8:38pm by Reiny

Pre-calculus-check answers
both correct
Saturday, August 23, 2008 at 1:41pm by Reiny

Pre-calculus-check answers
I am not familiar with the notation [g x f](x) 2) is correct
Saturday, August 23, 2008 at 1:37pm by Reiny

Pre Calculus 1
make sure to check your answers, since x > 0
Tuesday, March 29, 2011 at 7:50pm by Reiny

Pre-Calculus-check answers
Oops, forgot to mention that the answer for problem 2 is d.
Sunday, August 10, 2008 at 12:22pm by Lucy

Pre-Calculus-check answers
correct, except for the missing PI in the frequency term.
Saturday, August 30, 2008 at 6:31pm by bobpursley

Pre-Calculus-check answers
I am not surprised as I have found many errors thus far. Thanks for helping
Saturday, August 30, 2008 at 8:38pm by Lucy

Pre-Calculus-check answers
Write the equation of the circle that passes through the point (3,4) and has its center at (1,2). Answer: (x-1)^2 +(y-2)^2 = 8 Thanks for the help.
Saturday, October 11, 2008 at 2:10pm by Lucy

Pre-Calculus-check answers
I double checked my typing on the first problem and everything was entered correctly.
Saturday, August 30, 2008 at 8:38pm by Lucy

Pre-calculus-check answers
which of the following results is the graph of f(x)=x^2 being expanded vertically by factor of 3 and reflected over the x-axis
Saturday, August 23, 2008 at 1:47pm by Anonymous

Pre-Calculus-check answers
Oops---left the "x" off of 12 Should read: f(x)=6+x^4+2x^2-5x^3-12x Sorry
Sunday, August 31, 2008 at 11:47am by Lucy

Pre-Calculus-check answers
I agree about the sign change but your answer d makes the graph shorter, not taller. I think b)
Sunday, August 10, 2008 at 12:26pm by Damon

Pre-Calculus-check answer
Yes, all of those answers work. You can prove that by substitution. You can also derive it by substituting 3/x for y in the first equation. x^2 + 9/x^2 = 10 x^4 - 10x^2 +9 = 0 (x^2-9)(x^2 - 1) = 0 (x+3)(x-3)(x+1)(x-1) = 0
Sunday, October 12, 2008 at 10:05pm by drwls

Pre-Calculus-check answers
Use a sum or difference identity to find the exact value of sin 255 degrees Answer: sqrt6-sqrt2/4 Thanks
Saturday, August 30, 2008 at 10:10pm by Lucy

Pre Calculus
Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
Sunday, November 15, 2009 at 10:07pm by Pre Calculus

Pre-Calculus check answers
How does statistics relate to algebra and specifically to linear equations and linear programming?
Sunday, August 31, 2008 at 11:46am by boisetta Jacobs

Pre-Calculus-check answers
in y=-4tan(1/2x + 3pi/8) y = -4 tan (1/2)[x + 3pi/4] so the period is 2pi/(1/2) = 4pi which is none of your choices. Did you type your questions or answers correctly?? the phase shift would be 3pi/4 radians to the left. 2) the inverse of y = cos x+3 is x = cos y+3 then cos y...
Saturday, August 30, 2008 at 8:38pm by Reiny

Pre-calculus-check answers
your first one would be (x+3i)(x-3i)(x-i)(x+i) which is what you had, but then =(x^2 - 9i^2)(x^2 - i^2) remember i^2 = -1 = (x^2 + 9)(x^2 + 1) = .... you can finish that your second question is correct
Saturday, August 23, 2008 at 1:32pm by Reiny

Pre-Calculus-check answers
Find the degree measure of the central angle whose intercepted arc measures 8cm in a circle of radius 15cm. Answer: -401.07 degrees
Saturday, October 11, 2008 at 5:09pm by Lucy

Pre-Calculus-check answers
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 ...
Sunday, August 31, 2008 at 11:47am by David Q

Pre-Calculus-check answers
Write an equation of the tangent function with period 3pi/8, phase shift -pi/5, and vertical shift -2. Answer: y=tan(8x/3 - 8pi/15)-2 Thanks
Saturday, August 30, 2008 at 6:31pm by Lucy

Pre-Calculus-check answers
1) I agree 2) Your answer is OK, but these are not geometric means. They are three numbers in a geometric progression. Another possible answer would be -2, -2 sqrt2, -4.
Saturday, September 13, 2008 at 4:12pm by drwls

Pre-calculus-check answers
Choose the statement that is true for the graph f(x) =x^3-12x. Answer: f(x) decreases for x >-2 2) Which type of critical point, if any, is present in the graph of f(x)=(x-4)^5+1 Answer: none
Saturday, August 23, 2008 at 2:15pm by Lucy

Pre-calculus
Looks like calculus not pre-calculus to me by the way. I do not see how to do it without taking the derivative.
Tuesday, November 27, 2012 at 6:01pm by Damon

Pre-Calculus-check answers
not quite if x+iy = r e^iT = r (cos T i sin T) then r = sqrt (x^2+y^2) not sqrt [x^2 + (iy)^2] so r = sqrt (29), not 21
Saturday, September 13, 2008 at 4:09pm by Damon

Pre-calculus-check answers
If f(x)=4x^2 and g(x)=2/x, find [g x f](x). Answer: -1/2x^2 2) Are f(x)=1/2x+5 and g(x)=2x-5 inverses of each other? Answer: no
Saturday, August 23, 2008 at 1:37pm by Lucy

pre-algebra
Check the answers to your last two posts. The websites shows exactly how to do it. We'll be glad to check your answer.
Thursday, January 13, 2011 at 9:27pm by Ms. Sue

pre-calculus
but the answers are 0,-2,2
Tuesday, February 5, 2013 at 8:48pm by suie

Pre-Calculus/Calculus
I am too embarassed to ask this Calculus (really pre-calculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x-1 actually f(x)=1/3x+1? How do I find it? What if it asks the same equation replaced with f to the -1 power (x)? I think I know how the ...
Tuesday, July 1, 2008 at 10:38pm by Molly

pre-calculus
well i didn't want to post the answers because someone could easily choose an answer choice. i just wanted to compare reiny's answer to the answer i'd already gotten. i wanted to double check from a credible source.
Friday, October 3, 2008 at 9:28pm by aelisha

Pre-calculus-check answers
Write the slope-intercept form of the equation of the line that passes through the point (-5,4)and has a slope of -1. Answer: y=-x-1 2)Solve the system of equations algebraically: 1/3x+1/3y=1 and 2x+2y=9 Answer: no solution
Saturday, August 23, 2008 at 1:41pm by Lucy

pre-calculus
are u sure b/c the answers are from the book
Tuesday, February 5, 2013 at 8:48pm by suie

Pre-calculus-chck answers
correct, of course.
Tuesday, August 26, 2008 at 4:02pm by bobpursley

Pre-calculus-check answers
1) df/dx = 3x^2 -12 = 2(x+2)(x-2) There are critical points (where the derivative is zero) at x = +2 and -2. x=2 is a relative minimum. f(x) increases (when x increases) for x > +2 and decreases for -2 < x < 2 2) That equation has an absolute minimum at x...
Saturday, August 23, 2008 at 2:15pm by drwls

Pre-Calculus
Could someone check my answers? 27. (16/9)^2/3 = 64/27 28. (49/25)^3/2 = 343/125 31. (-64)^2/3 = 8 32. (-8)^-4/3 = 1/16 or -1/16
Monday, April 22, 2013 at 10:55pm by Caroline

Pre-Calculus-check answers
Find the sixth term in the geometric sequence: sqrt3y^3, -3y^5, 3sqrt3y^7 Answer: -27y^13 2) Find three geometric means between -sqrt2 and -4sqrt2. Answer: -2, 2sqrt2, -4 Thanks
Saturday, September 13, 2008 at 4:12pm by Lucy

PRE-CALCULUS
THIS IS FOR ALGEBRA/PRE-CALCULUS MATH. I POSTED IT JUST AS THE TEACHER WROTE IT.
Tuesday, September 13, 2011 at 10:41pm by aLVIN

Pre-Calculus
yeah part exams library go there Pre-Calculus exam
Thursday, October 29, 2009 at 7:46pm by stephanie

Pre-Calculus-check answers
Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x </= 3, y</=0, 1/2x+y</=5 Answer: -0.5
Saturday, August 30, 2008 at 11:19am by Lucy

Pre-calculus-check answers
Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x </= 3, y</=0, 1/2x+y</=5 Answer: -0.5
Saturday, August 23, 2008 at 1:57pm by Lucy

pre-calculus
Also with calculator, graph f(x), and determine all the possible maxima/minima coordinates to within two decimal points. f(x)=x^3+2x^2-x-2/x^2+x-6 i did this and got my answers but i doubt they are right, can anyone get the answers if you have a TI-83-84 please? thank you.
Saturday, March 13, 2010 at 9:46pm by Paris

Pre-calculus-check answer
yes
Saturday, August 23, 2008 at 2:36pm by Reiny

Pre-Algebra
I'll be glad to check your answers.
Monday, November 26, 2012 at 3:38pm by Ms. Sue

Pre calculus
use f(x)= { x^2 +5 if x ≤ 1 { -x^2+4x+3 if x>1 to find the answers to the following: 1. f(2) 2. f(4)-f(-2)
Thursday, October 14, 2010 at 6:38pm by Amy

Pre-Calculus-check answers
Find the number of possible negative real zeros for f(x)=6+x^4+2x^2-5x^3-12. Answer: 0 2) Approximate the real zeros of f(x)=2x^4-3x^2-2 to the nearest tenth. Answer: no real roots
Sunday, August 31, 2008 at 11:47am by Lucy

Pre-calculus-check answers
Find the number of possible negative real zeros for f(x)=6+x^4+2x^2-5x^3-12. Answer: 0 2) Approximate the real zeros of f(x)=2x^4-3x^2-2 to the nearest tenth. Answer: no real roots
Saturday, August 23, 2008 at 2:33pm by Lucy

Pre-calculus-check answers
Use the Remainder Theorem to find the remainder of (x^3-5x^2+7x+3)/(x-2). State whether the binomial is a factor of the polynomial. Answer: Remainder = 1, not a factor 2) Determine the slant asympotte for f(x)=(x^2-5x-3)/x Answer: y=x+5
Saturday, August 23, 2008 at 1:47pm by Lucy

Pre-Calculus
It is obvious she is wrong. the whole circumference of a 6cm circle is 12pi or about 36 cm 3cm is about 1/12 of the whole, or 1/12 of 360° = 30° she obviously confused the formula. ALWAYS do a general sanity check on your answers. Just because you get a value doesn'...
Tuesday, November 6, 2012 at 8:14pm by Steve

Pre-Calculus
I am in Honors Pre-Calculus and am having a hard time understanding my teacher. I feel so stupid. Does anyone have any suggestions on a website that might give me some insight into what I am doing wrong? Thanks!
Tuesday, October 7, 2008 at 4:23pm by Jill

pre-calculus
pre-calculus and i didn't understand where the d and cos came from
Thursday, September 29, 2011 at 10:44pm by tatiana

Pre-Calculus-check answers
1) cosθ=0.8 , θ is in fourth quadrant θ= cos^(-1)0.8=36.86989765 + 270=306.87 so , sin 2θ= sin2(306.87)= -0.96 answer : a
Sunday, August 31, 2008 at 12:03am by Mohamed

pre-calculus-check over work
all correct.
Monday, April 21, 2008 at 10:21am by bobpursley

Pre-Calculus-check answers
The first function takes the value zero at approximately X= -0.9 and again at around 4.63, with a minimum value between them somewhere around 3.46; also has a gradient of zero at X=0. Are you sure the equation is correctly written down, given that it's apparently got two ...
Sunday, August 31, 2008 at 11:47am by David Q

Pre-Calculus-check answers
1. the 3 seniors can be chosen i C(6,3) ways, which is 20 that leaves 2 juniors to be choses from the 4 juniors, which is 6 so the number of ways is 20x6 or 120 ways 2. there are 4 ways to get a 5, (1,4),(2,3),(3,2), and (4,1) so prob of a 5 = 4/36 = 1/9 similarly there are 5 ...
Saturday, October 11, 2008 at 2:03pm by Reiny

Pre-Calculus/Trig Check please and help
correc, typo. -3x^2
Monday, September 5, 2011 at 8:52am by bobpursley

Pre Calculus 12
Oh but this is a multiple choice question and the only answers that it can be are A 144 B 72 C 24 D 1728
Friday, January 25, 2013 at 12:43am by Shreya

math
Are you doing pre-calculus or calculus? In calculus, the maximum is obtained by setting f'(t)=derivative with respect to t = 0 and solving for t. In pre-calculus, you can transform the expression by completing the squares. Ax² + Bx + C =A(x²+ (B/A)x + C/A...
Tuesday, September 8, 2009 at 10:22pm by MathMate

Pre-Calculus
Pre-Calculus? That is a nasty equation. We might use Newton's Method, but that would be Calculus. I tried some "trial and erro" and got x = appr .371 using 2 decimals 4 sin .37 = 1.44646 e^.37 = 1.4477 I am curious what method was suggested that you should use.
Friday, March 29, 2013 at 10:30pm by Reiny

Pre-calculus-ck answers
Neither one of these is the general form that I know of. In the second, the center is wrong, I didn't go past that.
Tuesday, September 30, 2008 at 3:41pm by bobpursley

Pre-Calculus-check answers
2) csc Ø = -5/3, then sin Ø = -3/5 and is in III the cos Ø = -4/5 so tan 2Ø = sin 2Ø/cos 2Ø = 2sinØcosØ/(cos^2 Ø - sin^2 Ø) =2(-3/5)(-4/5)/(16/25 - 9/25) = 24/7
Sunday, August 31, 2008 at 12:03am by Reiny

Pre-algebra
Your assignment is to define and explain in your own words. We'll be glad to check your answers.
Saturday, May 21, 2011 at 1:01pm by Ms. Sue

calculus
Find the distance from (3,7,-5) to each of the following. a. the xy-plane b. the yz-plane c. the xz-plane d. the x-axis e. the y-axis f. the z-axis **I just wanna check my answers because I didn't really understand it when the teacher was explaining it and it's an even...
Saturday, April 7, 2007 at 2:17am by jean

Pre-Algebra
Why nobody wants to help me just check my answer and there if some of the answers are wrong then tell me the right ones !!! !!!!!!!!!!!! :-( :
Wednesday, March 13, 2013 at 3:36pm by Selena

Grade 12 Calculus
you don't need calculus for this. It can just confirm your answers. these are just ordinary parabolas. Find the vertex, and check the values at the ends of the intervals.
Tuesday, April 16, 2013 at 12:15pm by Steve

Pre-Calculus
h/225= tangent 49.5deg If I understand the picture correctly, check me. solve for h.
Wednesday, March 24, 2010 at 8:42pm by bobpursley

Pre-Calculus
The answers in the back of my book are pi/3,pi, and 5pi/3
Sunday, April 20, 2008 at 11:03pm by Sharon

calculus (check my work please)
Try to simplify your "different answers". Probably your "different answers" is same solutions write in different form.
Thursday, June 7, 2012 at 12:15am by Bosnian

pre-calculus
Could you post your answers if you need a confirmation? Also, calculate f'(x) and substitute the x-coordinate of the maximum/minimum to see if f'(x)=0. This will be another way to confirm your answer.
Saturday, March 13, 2010 at 9:46pm by MathMate

Pre-calculus-chck answers
Determine the value of w so that the line whose equation is 5x-2y=-w passes through the point at (-1,3). Answer: w=11
Tuesday, August 26, 2008 at 4:02pm by Lucy

pre-calculus
I did this already, but left a few steps for you to finish. Check the previous post of the same question
Friday, March 7, 2008 at 7:47am by drwls

Calculus (pleas help I really need to check this)
Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t, Find v(1). The answers ...
Thursday, February 17, 2011 at 7:24pm by Catherine

Pre-Calculus-check answers
How many ways can 5 students be chosen from a group of 4 juniors and 6 seniors to be on the prom committee if exactly 3 students must be seniors? Answer: 5400 Find the probability of getting a sum of 5 on the first toss of two number cubes and a sum of 6 on the second toss. ...
Saturday, October 11, 2008 at 2:03pm by Lucy

Pre-Calculus-check answers
Express 5-2i in polar form. Express your answer in radians to the nearest hundreth. r=sqrt5^2+-2i^2 which equals sqrt21.Arctan of -2/5+pi equals -18.7 Polar form=sqrt21 cis -18.7 Is this correct??
Saturday, September 13, 2008 at 4:09pm by Lucy

Pre-calculus-check answers
Determine whether the function f(x)[x+1] is odd, even, or neither. Answer: neither odd nor even 2)Find the least integral upper bound of the zeros of the function f(x)=x^3-x^2+1. Answer: upper bound, 1
Saturday, August 23, 2008 at 1:51pm by Lucy

Pre-Calculus-check answers
The graph of the equation y=x^3-x is symmetric with respect to which of the following? a) the x-axis b) the y-axis c) the origin d) none of these Answer: c 2) The graph of an odd function is symmetric with respect to which of the following? a) the x-axis b) the y-axis c) the ...
Sunday, August 10, 2008 at 12:22pm by Lucy

Pre-Algebra
ok well my pre algebra teacher copied some worksheets and its pg 40 and its about some friars in a floral shop buisness. for extra credit we do the joke which is also a way to find out if our answers were correct. there is no 3/8 in my answers and welll yeah thats it.
Tuesday, November 8, 2011 at 10:28pm by Emily

pre-calculus
If the equation is as you typed my money is riding with Damon. Your answers don't even come close to satisfying the equation.
Tuesday, February 5, 2013 at 8:48pm by Reiny

Calculus
yes, thanks just like to check my answers
Wednesday, November 28, 2007 at 11:20am by Kelly

Pre-Calculus-check answers
State the period and phase shift of the function y=-4tan(1/2x + 3pi/8) a) 2pi, -3pi/4 b) pi, 3pi/8 c) 2pi, 3pi/8 d) pi, -3pi/8 Answer: d 2) What is the equation for the inverse of y=cos x+3: a) y=Arccos(x+3) b) y=Arccos x-3 c) y=Arccos x+3 d) y=Arccos(x-3) Answer:d Thanks for ...
Saturday, August 30, 2008 at 8:38pm by Lucy

math(Pre-Calculus)
i just noticed i forgot to divide by h and forgot the -f(x):ooooooo but still can anyone post the answers so i know if im doing this right or wrong
Thursday, October 28, 2010 at 12:43am by K.C

Calculus (Please Check my answers)
thank you so much MathMate .
Sunday, March 13, 2011 at 6:40pm by anon

Math: Check Answers
you hvae math check answers on the title but you didnt even pick answers you jsut asking us to do your homework for you
Tuesday, January 29, 2013 at 11:08am by visoth

Pre-Calculus
Of course you are right, silly of me not to even check for the obvious. I was too concerned about the two obtuse angles. c so.... No such triangle is possible.
Sunday, April 7, 2013 at 11:25am by Reiny

Pre-Calculus
b^2 = a^2 + c^2 - 2ac cos 54 = 1485 b = 38.5 Check your numbers again. I get sinA = a*sinB/b = .1366 A = 7.85 degrees
Monday, December 7, 2009 at 12:47am by drwls

Pre-Calculus-check answer
Solve: x^2+y^2=10 and xy=3 Answer: (+/-3, +/-1) or (+/-1, +/-3)
Sunday, October 12, 2008 at 10:05pm by Lucy

Pre-Calculus
I dont know why the format is like this but the symbol behind the sin25 are degrees,the letter a on the answers are root, and the fl letter on number 3 are suppose to be PIE
Wednesday, April 27, 2011 at 1:30am by K.C

Pre-Calculus-Please check
Please check: 1.Find polar equation of x^2 + y^2 = 10y subbed r^2 for x^2 + y^2 and sin(theta sin for y =r^2=10sin(theta) 2. y=5 r=5/sin 3. x^2+y^2 =x^2 + y^2 =2x+3y
Wednesday, October 5, 2011 at 6:56pm by Tonya

Pre-Calculus check answers
Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an optomal solution
Sunday, August 31, 2008 at 11:46am by Lucy

Pre-Calculus-check answers
Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an optomal solution
Saturday, August 30, 2008 at 11:17am by Lucy

Pre-calculus-check answers
Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an optomal solution
Saturday, August 23, 2008 at 2:06pm by Lucy

Pre- calculus
Find A, given that a = 18.2, B = 62, and C = 48. Round answers to the nearest whole degree. Do not use a decimal point or extra spaces in the answer or it will be marked incorrect.
Thursday, March 15, 2012 at 5:08pm by Lucy

pre calc
A pre-calculus answer is -0.64 + kπ radians, where k∈ℤ.
Monday, January 25, 2010 at 8:11pm by MathMate

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