Thursday
December 8, 2016

# Search: pre cal--check

Number of results: 21,254

pre cal
does anyone take pre-cal online ?
April 16, 2012 by Mecie

Science -- Check my Answer Plz
How much heat (calories) must be applied to a 100 mL beaker filled with boiling water in order to vaporize the water? ** A) 540 cal ** B) 540 * 10^4 cal C) 800 cal D) 8000 cal Is A correct? or cud it be B.?
January 4, 2016 by Saisir le Jour

sqrt2 /10 Do I just leave this as sqrt2/10 or can I reduce it to sqrt1/5?
March 11, 2010 by Abbey

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
April 21, 2011 by Ashley!!

pre cal--check
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.
March 31, 2009 by Jason

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.
February 25, 2007 by Marie

solve for r There is a right triangle with the hypotenuse as r , the angle as 45 degrees and opposite side as 20. I am having a hard time finding this out. I had tan 45 = 1.61 20(1.61) = 32.4 but this is wrong.
March 23, 2010 by Abbey

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
December 11, 2006 by rena

Chemistry/Physics
How much heat is required to raise the temperature of 100 g of lead 20 degrees C? The specific heat of lead is 0.0305 cal/g K. A) 51 cal B) 61 cal C) 71 cal D) 81 cal
July 13, 2015 by Domino

1)f(x) = -x + sqrt 4 - x^2 Find f(-2) -(-2) + sqrt 4 - (-2)^2 = 2 + sqrt 4 + 4 2 + sqrt 8 = 4.828 Is this correct?
March 16, 2010 by Hannah

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 help =)
September 17, 2011 by Cristina

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 help =)
September 17, 2011 by Cristina

Physics
A 150 gram golden (specific heat 0.03 cal/gram^0 C) spoon at 20^0C is placed in a cup of tea at 100^0C. The amount of heat which the spoon absorbs from the tea which is necessary to reach spoon's tempature 47^0C is a)360.4 Cal b)121.5 Cal c)78.24 Cal d)15.08 Cal e)157.5 Cal
March 5, 2015 by Vashti

I have to find the width of a river which is represented by a right trianle. The opposite side is labeled w and the adjacent side is 1oo ft. Theta is 54 degrees. Would my equation be opp = adjacent/cos(54)?
March 23, 2010 by Hannah

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...
September 26, 2011 by Anonymous

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...
September 26, 2011 by Allison

Chemistry
How much heat is released when 10 g of steam at 100°C is cooled to 10 g of liquid water at 100°C? I am working on a practice test and the answer is not in the back of the book. Can some one help me. 1. 10 cal 2. 5400 cal 3. 800 cal 4. 6200 cal
November 10, 2011 by nan

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.
November 22, 2009 by Danny

Pre-Cal
xy=2 {{x^2=3+y^2}}
October 21, 2008 by Ash

Pre Cal
1 --------- 2x^2-2 --------------- 2 + x ---- ------- x+11 x^2-2x-3
January 29, 2010 by Lauren

pre cal
3(2x-1)^2 (2) (x+3)^1/2 + (2x-1)^3 (1/2) (x+3)^-1/2
February 13, 2013 by shenyce

Pre cal
ix^2-2x+i=0
March 17, 2013 by Anonymous

Pre Cal
x 2 + y 2 = 0
February 25, 2016 by Wayne

pre cal
x^2+bx+ ?=(x+ ? )^2.
July 7, 2016 by ari

pre cal
(x/x-1)-(x/x+1) -2=0
July 11, 2016 by ari

pre cal
1/(x-1)- x/(x+1)-2=0
July 11, 2016 by ari

Physics
A substance has the following properties; Boiling Point = 140 °C, Freezing Point = -10 °C, specific heat as a gas, liquid and solid, 0.3 cal/g.C°, 1.8 cal/g.C° and 0.8 cal/g.C° respectively. Heat of fusion =100 cal/g and heat of vaporization = 480 cal/g. How much heat ...
November 27, 2016 by Clarity

pre - cal
12-5y^2 what's the question?
August 20, 2007 by Anonymous

Pre-Cal
What are bearings??
February 5, 2008 by Daisy M.

pre cal
what is the sum of e or 1n
January 11, 2009 by ash

Pre Cal
Solve for x 2^x=8^x-3
December 22, 2009 by Raina

pre cal
solve for x 8x-(2x-1)=3x-10
February 1, 2010 by deonte

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

pre cal
(y^2)^-4y^8 simplify
August 30, 2012 by jennifer

Pre-Cal.
How does this go from x^2+ to 2i, explain.
January 8, 2013 by phyllys

Pre-Cal
tan-1=43\9.3
May 1, 2013 by Anonymous

Pre-Cal
2y=cos(4(t-6))+6
April 22, 2014 by Anonymous

pre cal
f(x) = 3x + 5, g(x) = 6x^2 Find (fg)(x)
June 23, 2014 by Jorgeeee

Pre cal
sin55=12/b what is b
April 7, 2016 by Sam

Chemistry
Which of the following is the correct unit for specific heat? degree C*** Cal cal/g cal/(g*deg C)
May 16, 2016 by Ben

pre-cal
find the value(s) of x for which f(x)=g(x). f(x)=x^4-2x^2,g(x)=2x^2
August 28, 2007 by Kira

Pre-Cal (again)
If: f(x)= 3/x^2-1 g(x)= x+1 What is the domain of f, g, and f o g?
September 20, 2008 by Crystal

pre cal
What would cos2theta=-1/2 be???
November 15, 2008 by becca

Pre-Cal
Find f X g 3 sqrt of x+1 X x^3+1
February 26, 2009 by Dan

Pre-Cal
Simplify e^3ln2-1
January 9, 2010 by jamie

pre-cal
(576^1/2+512^1/3)^1/3
May 31, 2010 by Soto

pre-cal
tan((theta/2)+(pi/6))=-1
July 2, 2011 by vince

Pre Cal
simplify the quotient: [x(5x+1)-3(x^2+1)]/ [(x-1)^2]
July 24, 2011 by Ashley

Pre Cal
cos^2+tan^2=1
March 25, 2012 by Trevion

Pre Cal
cos 75 deg
April 9, 2012 by Kara

pre cal
7tan^2(pheta)-2=3
June 28, 2012 by Maria

pre-cal
f(x)=((6xy^3)^1/2)((30x^4y^6)^1/2)/(5x^-7y^4)^1/2
August 30, 2012 by Anonymous

Pre Cal
f(x) = log3(93 x + 3 815 x + 3)
October 2, 2012 by Sally

pre-cal
find the intercepts of y=2x-4

Pre-Cal.
f(x)=x^3-3x^2+x-12 =x^2(x-3)+4(x-3) =x^2+4) (x-3) so if f(x) = 0 at x = 3,+/- 2i. what is the f(x) factored form
January 6, 2013 by phyllys

pre cal
July 11, 2016 by ari

PRE-CAL
SIMPLIFY 55/SQUARE ROOT OF 20 -3
September 10, 2007 by JIM

pre cal
solve for x: x^(2/3)=(1/27) (2^(x)+4)/(2^x)=2 explain please
December 7, 2008 by jason

Pre-Cal.
Describe the end behavior of f(x)=2x^4-5x+1: A. x-->‡, f(x)-->‡; x-->-‡, f(x)-->-‡ B. x-->‡, f(x)-->‡; x-->-‡, f(x)-->‡ C. x-->‡, f(x)-->-‡; x-->-‡, f(x)-->‡ D. x-->‡, f(x)-->-‡; ...
March 17, 2009 by Mia

Pre-Cal
solve(5-x)^-3=8 teach if possibe if not, its ok Thanks
January 10, 2010 by jamie

Pre-Cal
Find the inverse of the function f(x) = 3^x+2
March 19, 2010 by Mark

Pre-Cal
Identify any asymptotes of the graph. y = 1.08^5x
March 21, 2010 by Mark

Pre-Cal
What is the domain of f/g? f(x) = x / x+1 g(x) = x^3 Please explain! Thank you
March 22, 2010 by Hannah

Pre-Cal
what about the domain of 1/x. Would it be 0?
March 25, 2010 by Hannah

pre-cal
solve this system of equation 3x-y+5z-2w=-44 x+6y+4z-w=1 5x-y+z+3w=-15 4y-z-8w=58
May 5, 2010 by jenny

Pre-Cal
Find the domain for the function f(x)=-2x^(2)÷-x^(2)-6x-27
December 11, 2010 by Terri

pre-cal
what is the vertex and directrix of the parabola y=-1/2x^2 + 10 - 46
April 25, 2011 by sonia

pre cal
[root2(cos2pi/11+isin2pi/11)]^4
May 20, 2011 by joe

Pre Cal
the function y= tan (x/3) has an x intercept at?
July 24, 2011 by Ash

pre cal 2
solve the equation 4cos^2x-1=0
July 24, 2011 by kc

Pre Cal
simplify the quotient: [(x+1)^3(4x-9)-(16x+9)(x+1)^2]/[(x-6)(x+1)^3]
July 24, 2011 by Angela

pre-cal
Find B so that F(x)=-x^2+bx-75 has a maximum value of 25.
October 24, 2011 by tracy

Pre-Cal
find the value of the function k(p/q)
December 16, 2011 by Joe

Pre-cal
Does the equation x^2+x-12/x+2 have holes?
March 21, 2012 by Monique

Pre-cal
10.2 can someone show me this graph(x+2)^2/4+(y+2)^2/15=1
April 18, 2012 by sandra

Pre cal
June 29, 2012 by Terri

pre-cal
solve the equation algebraically. 7e^x=11-e^-x

pre-cal
Find the real zeros of f (x)= 2x^3 + 2x^3 – 8x + 3

pre-cal
Find the real zeros of f (x)= 2x^3 + 3x^2 – 8x + 3

pre-cal
find the distance d (P1 P2) between the P1 and P2 P1=(-1,1);P2=(1,2)

Pre Cal
What is the phase shift of F(x) = 3 sin (2x - 2)?
November 15, 2012 by Candace

Pre-cal
December 13, 2012 by Isis

Pre-Cal.
write f(x) in factored form.
January 5, 2013 by phyllys

pre cal
Solve G(x) for the given domain. G(x) = 3x 2 - 2x - 1 G(6) =
June 19, 2013 by tanya

pre cal
Find the inverse of the function. f(x) = x3 + 8
June 23, 2014 by Jorgeeee

Simple pre cal
Is the relation a function? {(14, 9), (15, 8), (8, 7), (1, 9), (15, 2)}

Pre-cal
What is the area of triangle ABC if a = 19, b = 14, and c = 23?
February 5, 2016 by sam

pre-cal
How do you work inverse functions alebraically?
September 20, 2007 by chris

Pre-Cal
FIND A POWER WHOSE SUM IS: (a) 5 / (1-3x) (b) 9 / (1-4x) (c) 6 / (2-4x)
April 3, 2009 by Bob

pre-cal
what are the steps to solve sec y sin (pi/2-y)=1
January 12, 2010 by Lori

Pre-Cal
how do we put x^2-2y^2=4 into a standard equation???
April 8, 2010 by Soto

Pre cal
Find the area of a triangle with sides of 12, 14 and 20
December 7, 2010 by Keiven

pre cal
convert the point to polar coordinates: (12,-12)
May 20, 2011 by joe

pre cal
convert the point to rectangular coordinates (7,1.75)
May 20, 2011 by joe

Pre Cal
simplify the expression 2sin^2 t + cos^2 t-2
July 24, 2011 by Angela

pre cal
please help don't understand this...Assume f(x) = 2x + 8 and g(x) = 5. What is the value of (f + g)(3)?
September 27, 2011 by random person

Pre-Cal
Find the distance d(P1,P2) between the points P1 and P2. P1= (-2,1); P2= (0,0) P1= (-1,1); P2= (2,2) P1= (-1,0); P2= (2,4) P1= (2,-3); P2= (4,2)
January 8, 2012 by nelly

Pre-Cal
Find the distance from point (-1, 3) to the line 5x- 4y= 10.

Pre-Cal
Find the domain of the function. sqrt of x^2-9
September 12, 2012 by Philip

pre-cal
find the intercepts. y=2x-2 show work
December 9, 2012 by anonymous

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