All Answers 356601 Answers

+3146

0

xXoxideXx:

Show that:

X(squared) - 6x - 39 = 0

Thanks in advance!

for what x?
[input]solve( x^2 - 6x - 39 = 0 )[/input]

adminJan 28, 2012

+3146

+2

[input]1/3 * x/100= 5/9[/input]

adminJan 28, 2012

+3146

0

[input]17180$*20%[/input]

adminJan 28, 2012

Jan 27, 2012

+3146

+5

[input]37000 * 30%[/input]

adminJan 27, 2012

+3146

+3

1year = 365.2425days (leap years included, gregorian calendar days)
t = 6years = 2191.455days

interest rate per day: x = 3.10% / 365.2425
C=28210.00$

compound interest P:
P = C*(1+x)t
P= 28210.00$ * (1+3.10% / 365.2425)^2191.455 = 33976.48$.

adminJan 27, 2012

+3146

0

short answer:
[input]solve( y=1/(2x)+1, y=-3x+8 )[/input]

long answer:
y=1/2x+1
y=-3x+8

1/(2x)+1=-3x+8 |-1
1/(2x) = -3x+7 |*2x
1 = (-3x+7)*2x
1 = -3x*2x+7*2x
1 = -6x^2+14x |-1
-6x^2+14x-1=0
p-q-formula (quadratic formula)
=> {x=0.073760245949667, x=2.259573087383667}

now insert both "x" in one of your equations:
=> {y=1.221280737849, y=7.778719262151}

adminJan 27, 2012

Jan 26, 2012

+25

GuestJan 26, 2012

+11

0.0011111111111111111111111111111111

GuestJan 26, 2012

+5

1.2 slices or 12%

GuestJan 26, 2012

+3146

0

[input]300.0miles/5.5hours in miles/hour[/input]
54.54545454545455[miles/hour]

adminJan 26, 2012

+3

GuestJan 26, 2012

+3146

0

(-2/3) * (1/3) = -2/9

adminJan 26, 2012

+3146

0

replace all "i" with "x", because i is the imaginary unit:

solve( A = P * ((x/12)/((1+(x/12)-1)^(1/360)) + (x/12)), x)
=>
x=-((((2^(1/180)*3^(1/360))*P)*x^(359/360)-(12*A))/P)

adminJan 26, 2012

+3146

+1

Input: lim( e^(x^2)/cos(x^2), x=0 )

Result: 1

adminJan 26, 2012

+3146

0

(9/8) / (4/5) = (9/8) * (5/4) = 45/32

adminJan 26, 2012

+3146

+3

7^2048= 576482262441085687652480453073788264666259436882592829793490212216914392868001307020347478192733933738615973350204675240966870809086054555175379842174390833087616618101073377296600400211185710803893862739378778630667920556292009563153283204683274767786727021298402608577538304760241573833598028808748844847898186373304021776457478337852146435313447568423564624161031753062225313160332533059900697300536515781149637628475083614837163148265981260380137244013871158870863315979480623470342351940243257041396105803911324309907494370602037535002101441108999411726766765596925187455057493973247795422512611299484984444347323995223593850889213575690309904883769510549509082397815497178109002067478888312880095322160842140951545764279644758937147779663313737066925789511752368267105452643023953658751884303757777580999150212356866565160668859665269373236448898983754075322592633361018550569656046040296315400610410987267163487452204256215242996572888661546372872845184669073985013614841459345665447623982541327293825640570366519126075573314769851638715647402281667737082079249614259734758373634075167085735817444005125091491658418977343012967114536109198097271910915055206849683367621828792508889435742977740775892093911715027785206628841080528345837259773819586540341428106515089592363545676168770659996184525104032233499925881939761773781736489371664279992262504573793367875433417922947950855273678017703524492391823059563609578145139016218673112988542782523551987721397910176375665161842582432862057812051726894537960324044217121685499252907130758562175551920300771432574349977394861896371361547161722598121252733764768881743055101069003612097616549408057959666467977040076023143193726837427342055935187889465976722306843475410781388801

or approx: 5.7648226*10^1730

adminJan 26, 2012

+3146

0

5/12+13/30=51/60= 17/20

adminJan 26, 2012

+3146

0

1year = 365.2425days (leap years included, gregorian calendar days)
t = 6years = 2191.455days
interest rate per day: x = 3.10% / 365.2425
C=28210.00$

compound interest P:
P = C*(1+x)t
P= 28210.00$ * (1+3.10% / 365.2425)^2191.455 = 33976.48$.

adminJan 26, 2012

+3146

+3

you can enter your equation directly into the input box: -0.5= -2x + 8.1
x=4.3

--------------------------
Rearrange it piece by piece:
-0.5= -2x + 8.1
Subtract 8.1 from both sides.
-8.6= -2x
Divide both sides by -2.
4.3= x

adminJan 26, 2012

+3146

+5

sqrt3( 27 )
sqrt( 27 , 3)
27^(1/3)

adminJan 26, 2012

+3146

0

log( 100 )
ln( e )
log( 43, 7)

adminJan 26, 2012

+3146

0

sqrt3( 2589 )^10

adminJan 26, 2012

+3146

+28

3*10^-2 = 3*1/10^2 = 3/100 0.03

adminJan 26, 2012

Jan 25, 2012

+19

GuestJan 25, 2012

+3146

+51

3^(x+1)=4^(x-1) | *4

4*3^(x+1)=4^x

ready?

4*3^(x+1)=4^x | ln( .. ) on both sides, let's assume x will be larger 0

ln( 4*3^(x+1) ) = ln( 4^x )

x*ln(3)+ln(12) = x*ln(4) | -x*ln(4) and -ln(12)

x*ln(3)-x*ln(4)=-ln(12)

x*(ln(3)-ln(4))=-ln(12)

x=-ln(12)/(ln(3)-ln(4))

x ≈ 8.63768335861279

adminJan 25, 2012

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