See tutors' answers!

Algebra ->  Tutoring on algebra.com -> See tutors' answers!      Log On


   
By Tutor
 | By Problem Number | 

Tutor:
New! Get regular updates about newly solved problems via algebra.com's RSS system.

Recent problems solved by 'Fombitz'

Fombitz answered: 13805 problems
Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449 , 450..479 , 480..509 , 510..539 , 540..569 , 570..599 , 600..629 , 630..659 , 660..689 , 690..719 , 720..749 , 750..779 , 780..809 , 810..839 , 840..869 , 870..899 , 900..929 , 930..959 , 960..989 , 990..1019 , 1020..1049 , 1050..1079 , 1080..1109 , 1110..1139 , 1140..1169 , 1170..1199 , 1200..1229 , 1230..1259 , 1260..1289 , 1290..1319 , 1320..1349 , 1350..1379 , 1380..1409 , 1410..1439 , 1440..1469 , 1470..1499 , 1500..1529 , 1530..1559 , 1560..1589 , 1590..1619 , 1620..1649 , 1650..1679 , 1680..1709 , 1710..1739 , 1740..1769 , 1770..1799 , 1800..1829 , 1830..1859 , 1860..1889 , 1890..1919 , 1920..1949 , 1950..1979 , 1980..2009 , 2010..2039 , 2040..2069 , 2070..2099 , 2100..2129 , 2130..2159 , 2160..2189 , 2190..2219 , 2220..2249 , 2250..2279 , 2280..2309 , 2310..2339 , 2340..2369 , 2370..2399 , 2400..2429 , 2430..2459 , 2460..2489 , 2490..2519 , 2520..2549 , 2550..2579 , 2580..2609 , 2610..2639 , 2640..2669 , 2670..2699 , 2700..2729 , 2730..2759 , 2760..2789 , 2790..2819 , 2820..2849 , 2850..2879 , 2880..2909 , 2910..2939 , 2940..2969 , 2970..2999 , 3000..3029 , 3030..3059 , 3060..3089 , 3090..3119 , 3120..3149 , 3150..3179 , 3180..3209 , 3210..3239 , 3240..3269 , 3270..3299 , 3300..3329 , 3330..3359 , 3360..3389 , 3390..3419 , 3420..3449 , 3450..3479 , 3480..3509 , 3510..3539 , 3540..3569 , 3570..3599 , 3600..3629 , 3630..3659 , 3660..3689 , 3690..3719 , 3720..3749 , 3750..3779 , 3780..3809 , 3810..3839 , 3840..3869 , 3870..3899 , 3900..3929 , 3930..3959 , 3960..3989 , 3990..4019 , 4020..4049 , 4050..4079 , 4080..4109 , 4110..4139 , 4140..4169 , 4170..4199 , 4200..4229 , 4230..4259 , 4260..4289 , 4290..4319 , 4320..4349 , 4350..4379 , 4380..4409 , 4410..4439 , 4440..4469 , 4470..4499 , 4500..4529 , 4530..4559 , 4560..4589 , 4590..4619 , 4620..4649 , 4650..4679 , 4680..4709 , 4710..4739 , 4740..4769 , 4770..4799 , 4800..4829 , 4830..4859 , 4860..4889 , 4890..4919 , 4920..4949 , 4950..4979 , 4980..5009 , 5010..5039 , 5040..5069 , 5070..5099 , 5100..5129 , 5130..5159 , 5160..5189 , 5190..5219 , 5220..5249 , 5250..5279 , 5280..5309 , 5310..5339 , 5340..5369 , 5370..5399 , 5400..5429 , 5430..5459 , 5460..5489 , 5490..5519 , 5520..5549 , 5550..5579 , 5580..5609 , 5610..5639 , 5640..5669 , 5670..5699 , 5700..5729 , 5730..5759 , 5760..5789 , 5790..5819 , 5820..5849 , 5850..5879 , 5880..5909 , 5910..5939 , 5940..5969 , 5970..5999 , 6000..6029 , 6030..6059 , 6060..6089 , 6090..6119 , 6120..6149 , 6150..6179 , 6180..6209 , 6210..6239 , 6240..6269 , 6270..6299 , 6300..6329 , 6330..6359 , 6360..6389 , 6390..6419 , 6420..6449 , 6450..6479 , 6480..6509 , 6510..6539 , 6540..6569 , 6570..6599 , 6600..6629 , 6630..6659 , 6660..6689 , 6690..6719 , 6720..6749 , 6750..6779 , 6780..6809 , 6810..6839 , 6840..6869 , 6870..6899 , 6900..6929 , 6930..6959 , 6960..6989 , 6990..7019 , 7020..7049 , 7050..7079 , 7080..7109 , 7110..7139 , 7140..7169 , 7170..7199 , 7200..7229 , 7230..7259 , 7260..7289 , 7290..7319 , 7320..7349 , 7350..7379 , 7380..7409 , 7410..7439 , 7440..7469 , 7470..7499 , 7500..7529 , 7530..7559 , 7560..7589 , 7590..7619 , 7620..7649 , 7650..7679 , 7680..7709 , 7710..7739 , 7740..7769 , 7770..7799 , 7800..7829 , 7830..7859 , 7860..7889 , 7890..7919 , 7920..7949 , 7950..7979 , 7980..8009 , 8010..8039 , 8040..8069 , 8070..8099 , 8100..8129 , 8130..8159 , 8160..8189 , 8190..8219 , 8220..8249 , 8250..8279 , 8280..8309 , 8310..8339 , 8340..8369 , 8370..8399 , 8400..8429 , 8430..8459 , 8460..8489 , 8490..8519 , 8520..8549 , 8550..8579 , 8580..8609 , 8610..8639 , 8640..8669 , 8670..8699 , 8700..8729 , 8730..8759 , 8760..8789 , 8790..8819 , 8820..8849 , 8850..8879 , 8880..8909 , 8910..8939 , 8940..8969 , 8970..8999 , 9000..9029 , 9030..9059 , 9060..9089 , 9090..9119 , 9120..9149 , 9150..9179 , 9180..9209 , 9210..9239 , 9240..9269 , 9270..9299 , 9300..9329 , 9330..9359 , 9360..9389 , 9390..9419 , 9420..9449 , 9450..9479 , 9480..9509 , 9510..9539 , 9540..9569 , 9570..9599 , 9600..9629 , 9630..9659 , 9660..9689 , 9690..9719 , 9720..9749 , 9750..9779 , 9780..9809 , 9810..9839 , 9840..9869 , 9870..9899 , 9900..9929 , 9930..9959 , 9960..9989 , 9990..10019 , 10020..10049 , 10050..10079 , 10080..10109 , 10110..10139 , 10140..10169 , 10170..10199 , 10200..10229 , 10230..10259 , 10260..10289 , 10290..10319 , 10320..10349 , 10350..10379 , 10380..10409 , 10410..10439 , 10440..10469 , 10470..10499 , 10500..10529 , 10530..10559 , 10560..10589 , 10590..10619 , 10620..10649 , 10650..10679 , 10680..10709 , 10710..10739 , 10740..10769 , 10770..10799 , 10800..10829 , 10830..10859 , 10860..10889 , 10890..10919 , 10920..10949 , 10950..10979 , 10980..11009 , 11010..11039 , 11040..11069 , 11070..11099 , 11100..11129 , 11130..11159 , 11160..11189 , 11190..11219 , 11220..11249 , 11250..11279 , 11280..11309 , 11310..11339 , 11340..11369 , 11370..11399 , 11400..11429 , 11430..11459 , 11460..11489 , 11490..11519 , 11520..11549 , 11550..11579 , 11580..11609 , 11610..11639 , 11640..11669 , 11670..11699 , 11700..11729 , 11730..11759 , 11760..11789 , 11790..11819 , 11820..11849 , 11850..11879 , 11880..11909 , 11910..11939 , 11940..11969 , 11970..11999 , 12000..12029 , 12030..12059 , 12060..12089 , 12090..12119 , 12120..12149 , 12150..12179 , 12180..12209 , 12210..12239 , 12240..12269 , 12270..12299 , 12300..12329 , 12330..12359 , 12360..12389 , 12390..12419 , 12420..12449 , 12450..12479 , 12480..12509 , 12510..12539 , 12540..12569 , 12570..12599 , 12600..12629 , 12630..12659 , 12660..12689 , 12690..12719 , 12720..12749 , 12750..12779 , 12780..12809 , 12810..12839 , 12840..12869 , 12870..12899 , 12900..12929 , 12930..12959 , 12960..12989 , 12990..13019 , 13020..13049 , 13050..13079 , 13080..13109 , 13110..13139 , 13140..13169 , 13170..13199 , 13200..13229 , 13230..13259 , 13260..13289 , 13290..13319 , 13320..13349 , 13350..13379 , 13380..13409 , 13410..13439 , 13440..13469 , 13470..13499 , 13500..13529 , 13530..13559 , 13560..13589 , 13590..13619 , 13620..13649 , 13650..13679 , 13680..13709 , 13710..13739 , 13740..13769 , 13770..13799 , 13800..13829, >>Next

Probability-and-statistics/352658: The odds aganist an event are 9:8. Find the probability that the event will occur.
1 solutions

Answer 252044 by Fombitz(13828) About Me  on 2010-10-06 12:45:26 (Show Source):
You can put this solution on YOUR website!
9 outcomes against the event occurring
8 outcomes for the event occurring
17 total outcomes
P(Event occurring)=8%2F17


Geometry_proofs/352657: Can you solve this proof for me please?
Given:AB=BC
Prove:1/2 AC=BC
1 solutions

Answer 252040 by Fombitz(13828) About Me  on 2010-10-06 12:39:52 (Show Source):
You can put this solution on YOUR website!
Given,
AB=BC
You know that,
AB%2BBC=AC
Substituting,
BC%2BBC=AC
2BC=AC
BC=%281%2F2%29AC


Divisibility_and_Prime_Numbers/352615: What is number 5,941,221 divisible by?
1 solutions

Answer 252006 by Fombitz(13828) About Me  on 2010-10-06 10:29:40 (Show Source):
You can put this solution on YOUR website!
Since it's digits sum to 24, which is divisble by 3, it's divisble by 3.


Graphs/352609: Graph & find the y intercept:
y = 3/2x + 6
The +6 is throwing me off for some reason.
Thank you for all of your help!!!
1 solutions

Answer 252004 by Fombitz(13828) About Me  on 2010-10-06 10:28:37 (Show Source):
You can put this solution on YOUR website!
When x=0, y=%283%2F2%29%280%29%2B6=6
When x=2, y=%283%2F2%29%282%29%2B6=3%2B6=9
Plot those two points.

In point-slope form, y=mx%2Bb, b is the intercept.
highlight%28b=6%29


Quadratic_Equations/352607: Find the vertex, the line of symmetry, the maxiumum or minimum value of the quadratic function, and graph the function.
f(x)=-2x^2+2x+3
The x-coordinate of the vertex is:
The y-coordinate of the vertex is:
The equation of the line of symmetry is x=
The maximum/minimum of f(x) is:
The value, f(1/2)=7/2 is minimum or maximum?
So far, I have tried to work the problem. This is what I have:
f(x)=-2x^2+2x+3, so you use (-b/2a,4ac-b^2/4a)
Therefore, if -b/2a=-(2)/2(-1)=1
Then put 1 back into the equation.
f(1)=-2(1)^2+2(1)+3
Using FOIL, I come up with 1.
This where I get confused. Is the x-coordinate 1? How do i come up with y-coordinate?
Is the line of symmetry also 1?
I think I confuse myself the most when I try to apply the FOIL method?
Any help is so very much appreciated! Thanks in advance!
1 solutions

Answer 252003 by Fombitz(13828) About Me  on 2010-10-06 10:24:20 (Show Source):
You can put this solution on YOUR website!
Complete the square to put the quadratic equation into vertex form, y=a%28x-h%29%5E2%2Bk where (h,k) is the vertex.
f%28x%29=-2x%5E2%2B2x%2B3
f%28x%29=-2%28x%5E2-x%29%2B3
f%28x%29=-2%28x%5E2-x%2B1%2F4%29%2B3%2B2%281%2F4%29
f%28x%29=-2%28x-1%2F2%29%5E2%2B7%2F2
So the vertex is (1%2F2,7%2F2).
The vertex lies on the axis of symmetry, x=1%2F2
The value at the vertex is either a minimum (when a%3E0) or a maximum (when a%3C0).
In this case, a=-2.
y%5Bmax%5D=7%2F2
.
.
.


Graphs/352606: Find the slope of the line:
(-3, -2) (5, -2)
y2-y1 = -2 - (-2)
x2-x1 = -3 - 5
Is correct answer 0?
1 solutions

Answer 252001 by Fombitz(13828) About Me  on 2010-10-06 10:19:10 (Show Source):


Triangles/352592: about how long are the legs of an isosceles right triangle with a hypotenuse that is 10 units long
1 solutions

Answer 251992 by Fombitz(13828) About Me  on 2010-10-06 10:05:55 (Show Source):
You can put this solution on YOUR website!
DUPLICATE See Question 352594 from Triangles


Polynomials-and-rational-expressions/352603: Solve the fromula for the given variable.
T=fm-gm;m
T=(f-g)m
not sure where to go after that. do I need to subtract (f-g) from each side to get m byitself?

1 solutions

Answer 251991 by Fombitz(13828) About Me  on 2010-10-06 10:04:18 (Show Source):
You can put this solution on YOUR website!
No, divide both sides by %28f-g%29.


Expressions-with-variables/352601: Express each of the following in words.
m
a>b
1 solutions

Answer 251990 by Fombitz(13828) About Me  on 2010-10-06 10:03:43 (Show Source):
You can put this solution on YOUR website!
m%3Cn:m is less than n.
a%3Eb:a is greater than b.


Triangles/352594: about how long are the legs of an isosceles right triangle with a hypotenuse that is 10 units long
1 solutions

Answer 251989 by Fombitz(13828) About Me  on 2010-10-06 10:02:57 (Show Source):
You can put this solution on YOUR website!
Let the legs be L.
L%5E2%2BL%5E2=10%5E2
2L%5E2=100
L%5E2=50
highlight%28L=2%2Asqrt%285%29%29 units


Linear-equations/352597: what is the slope and intercept of 8x=9y+18
1 solutions

Answer 251988 by Fombitz(13828) About Me  on 2010-10-06 10:01:32 (Show Source):
You can put this solution on YOUR website!
Convert to slope-intercept form, y=mx%2Bb
8x=9y%2B18
9y=8x-18
y=%288%2F9%29x-2
.
.
.
Slope:m=8%2F9
Intercept:b=-2
.
.
.
graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C%288%2F9%29x-2%29


Sequences-and-series/352546: (9^-2)^-5= thank u so much for any help u can provide me with
1 solutions

Answer 251983 by Fombitz(13828) About Me  on 2010-10-06 09:52:27 (Show Source):
You can put this solution on YOUR website!
%289%5E-2%29%5E-5=1%2F%289%5E%28-2%29%29%5E5
%289%5E-2%29%5E-5=1%2F%281%2F81%29%5E5
%289%5E-2%29%5E-5=81%5E5
%289%5E-2%29%5E-5=3486784401
.
.
or more quickly,
%289%5E-2%29%5E-5=9%5E%28-2%28-5%29%29
%289%5E-2%29%5E-5=9%5E10
%289%5E-2%29%5E-5=3486784401


Expressions-with-variables/352595: The product of n and a number three less than n.
1 solutions

Answer 251980 by Fombitz(13828) About Me  on 2010-10-06 09:49:51 (Show Source):


Money_Word_Problems/352535: Suppose that you deposit P3000 at 7.5% (simple interest) and P5000 at 3.2% (simple interest). What will be the combined interest rate of the two investments?
1 solutions

Answer 251979 by Fombitz(13828) About Me  on 2010-10-06 09:47:38 (Show Source):
You can put this solution on YOUR website!
I=Prt
Let t=1+ year.
I%5B1%5D=3000%280.075%29=225
I%5B2%5D=5000%280.0032%29=160
I%5B1%5D%2BI%5B2%5D=225%2B160=385
r=I%2FP=385%2F%283000%2B5000%29=0.048125
The combined interest rate is 4.8125%.


Square-cubic-other-roots/352583: Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers.


^3sqrt(y^13) ^3sqrt(16y^14)
1 solutions

Answer 251978 by Fombitz(13828) About Me  on 2010-10-06 09:44:28 (Show Source):


Functions/352507: f(x)= x cubed-2 : Give the domain of each function.
1 solutions

Answer 251975 by Fombitz(13828) About Me  on 2010-10-06 09:42:30 (Show Source):
You can put this solution on YOUR website!
There are no restriction on the domain.
Domain:(-infinity,infinity)


Finance/352549: 4(x^-4)^3(-2x)^4=thank u so much for any help u can provide me with
1 solutions

Answer 251974 by Fombitz(13828) About Me  on 2010-10-06 09:41:12 (Show Source):


Quadratic_Equations/352586: Find the vertex, the line of symmetry, and the maximum or minimum value of f(x).
F(x)=1/5(x+1)^2+7
Any help is greatly appreciated. These always confuse me.
Thank you in advance!
1 solutions

Answer 251972 by Fombitz(13828) About Me  on 2010-10-06 09:33:14 (Show Source):
You can put this solution on YOUR website!
Confused how?
The equation is already in vertex form, y=a%28x-h%29%5E2%2Bk, where (h,k) is the vertex.
Compare to the given equation to find the vertex, (h,k).
The line of symmetry lies on the vertex, so x=h
Whether the parabola opens upwards or downwards is determined by the sign of a.
If a%3E0, then the vertex value is a minimum, y%5Bmin%5D=k
If a%3C0, then the vertex value is a maximum, y%5Bmax%5D=k


Linear-systems/352572: Solve the system of equations
3x+6y-z=7
3x-3y+5z=-12
9x+9y-2z=12

1 solutions

Answer 251965 by Fombitz(13828) About Me  on 2010-10-06 09:25:23 (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%283%2C3%2C3%2C6%2C-1%2C3%2C-3%2C5%2C9%2C9%2C-2%29%29
[x]=%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29
[b]=%28matrix%283%2C1%2C7%2C-12%2C12%29%29
.
.
[A][x]=[b]
.
.
[x]=[A]inv[b]
.
.
det([A])=135
.
.
[A]inv=%281%2F135%29%2A%28matrix%283%2C3%2C-39%2C3%2C27%2C51%2C3%2C-18%2C54%2C27%2C-27%29%29
.
.
[x]=%28matrix%283%2C1%2C1%2F9%2C7%2F9%2C-2%29%29


Expressions-with-variables/352574: I am not exactly sure how to solve this. Can someone help me understand how to work this please...
4x-y=-33
-4x-4y=68
if x=-10 and y=-7 how do I complete this equation? Thanks in advance
1 solutions

Answer 251962 by Fombitz(13828) About Me  on 2010-10-06 09:18:55 (Show Source):
You can put this solution on YOUR website!
Add the equations together,
4x-y-4x-4y=-33%2B68
-5y=35
highlight%28y=-7%29
Now use either equation to solve for x.
4x-y=-33
4x%2B7=-33
4x=-40
highlight%28x=-10%29


Square-cubic-other-roots/352581: Find the following. Assume that a and b can represent any real number.

Find+the+following.+Assume+that+a+and+b+can+represent+any+real+number.%0D%0A%0D%0A%0D%0A^436 sqrt(a+b)^436
1 solutions

Answer 251960 by Fombitz(13828) About Me  on 2010-10-06 09:17:09 (Show Source):


Square-cubic-other-roots/352582: multiply
((( ^3sqrt(3) * ^3sqrt(9)}}}
1 solutions

Answer 251959 by Fombitz(13828) About Me  on 2010-10-06 09:16:14 (Show Source):


Numeric_Fractions/352550: 12x^4-6x^3+10x
________________________
3x^2
1 solutions

Answer 251949 by Fombitz(13828) About Me  on 2010-10-06 07:49:23 (Show Source):


Linear-equations/352559: Sketch a graph of the rational function
y= (x^2+3x+2)/(x^3+4x^2-3x-18)
giving exact or numerical values for all intercepts,asymptotes and turning points.
1 solutions

Answer 251947 by Fombitz(13828) About Me  on 2010-10-06 07:45:34 (Show Source):
You can put this solution on YOUR website!
y=+%28x%5E2%2B3x%2B2%29%2F%28x%5E3%2B4x%5E2-3x-18%29
y=+%28%28x%2B1%29%28x%2B2%29%29%2F%28%28x-3%29%28x%2B2%29%5E2%29
y=+%28%28x%2B1%29%29%2F%28%28x-3%29%28x%2B2%29%29
Vertical asymptotes at x=3 and x=-2.
.
.
.
%28%28x%2B1%29%29%2F%28%28x-3%29%28x%2B2%29%29=0
x%2B1=0
x=-1
X-intercept is (-1,0).
.
.
.
y=+%28%28x%2B1%29%29%2F%28%28x-3%29%28x%2B2%29%29
y=+%28%280%2B1%29%29%2F%28%280-3%29%280%2B2%29%29
y=-1%2F6
Y-intercept is (0,-1%2F6)
.
.
.
y=+%28x%5E2%2B3x%2B2%29%2F%28x%5E3%2B4x%5E2-3x-18%29
.
.

.
.
y=+%281%2Fx%2B3%2Fx%5E2%2B2%2Fx%5E3%29%2F%281%2B4%2Fx-3%2Fx%5E2-18%2Fx%5E3%29
As x-%3Einfinity,
y=+%280%2B0%2B0%29%2F%281%2B0-0-0%29
y-%3E0
As x-%3E-infinity, y-%3E0
.
.
.




Angles/352431: if i wanted to find the measure of the larger angle and it is 44 more than the measure of the smaller on what would be my answer?
1 solutions

Answer 251945 by Fombitz(13828) About Me  on 2010-10-06 07:35:40 (Show Source):
You can put this solution on YOUR website!
A%5BL%5D=A%5BS%5D%2B44
You need another relationship to get actual values. As an example, if the two angles are complementary or supplementary, etc.


Travel_Word_Problems/352503: Car A is going 78 mph and is 500 feet behind car B going 60 mph-how long will it take Car A to catch Car B?
1 solutions

Answer 251942 by Fombitz(13828) About Me  on 2010-10-06 07:34:25 (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
.
.
.
R%5Ba%5D%2At=D%5Ba%5D
D%5Ba%5D=78t
.
.
R%5Bb%5D%2At=D%5Bb%5D
D%5Bb%5D=60t
Convert 500 feet to miles to be consistent.
D%5Ba%5D=D%5Bb%5D%2B500%2F5280
Substitute and solve for t.
78t=60t%2B25%2F264
18t=25%2F264
t=25%2F4752 hrs
or approximately,
t=0.00526 hrs
t=18.9 seconds


Probability-and-statistics/352205: 1. An urn contains 15 marbles – 8 blue, 5 red, and 2 white. If 2 marbles are chosen without replacement, find the probability that the first marble is blue and the second is white.
2. A quick quiz consists of a true/false question followed by a multiple-choice question with four possible answers (a,b,c,d). An unprepared student makes random guesses for both answers. What is the probability that s/he gets both answers correct?

1 solutions

Answer 251763 by Fombitz(13828) About Me  on 2010-10-05 16:30:19 (Show Source):
You can put this solution on YOUR website!

1.P%28B%29=8%2F15
P%28W%29=2%2F14=1%2F7
P=P%28B%29%2AP%28W%29=%288%2F15%29%281%2F7%29=8%2F105
.
.
.
2. First question correct:P=1%2F4
Second question correct:P=1%2F4
Two questions correctP=%281%2F4%29%281%2F4%29=1%2F16


test/352262: I'm trying to solve this problem:
1/3(3x-9) = -4(x-3)
1 solutions

Answer 251760 by Fombitz(13828) About Me  on 2010-10-05 16:23:42 (Show Source):
You can put this solution on YOUR website!
%281%2F3%29%283x-9%29+=+-4%28x-3%29
Multiply both sides by 3.
3x-9=-12%28x-3%29
3x-9=-12x%2B36
Now solve for x.


Inequalities/352260: The grocery store is selling frozen turkeys that weigh between 10 pounds and 20 pound. Write two ineualities that together show the weights of the turkeys.
1 solutions

Answer 251758 by Fombitz(13828) About Me  on 2010-10-05 16:22:47 (Show Source):
You can put this solution on YOUR website!
W%3E10 and W%3C20 or together 10%3CW%3C20


Points-lines-and-rays/352259: Given the function f(x)= 3x^3-2x+1, find the average rate of change from x=2 and 3. (I missed class the day we learned this so I have no idea what to do!!)
1 solutions

Answer 251755 by Fombitz(13828) About Me  on 2010-10-05 16:20:53 (Show Source):
You can put this solution on YOUR website!
Find f%283%29.
Find f%282%29.
Calculate %28f%283%29-f%282%29%29%2F%283-2%29.
That's the average rate of change of f%28x%29 from x=2 to x=3.


expressions/352053: use three 9s, one set of parentheses, and only one algebretic operation to produce an expression that is equivalent to one
1 solutions

Answer 251751 by Fombitz(13828) About Me  on 2010-10-05 16:19:26 (Show Source):
You can put this solution on YOUR website!
If I have three 9's how can I only use one algebraic operation.
You need at least 2.