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3.24*10^18*56/ 6*10^23

GuestJul 15, 2013

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GuestJul 15, 2013

0

GuestJul 15, 2013

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wow ur stupid
The answer is 8 brah

GuestJul 15, 2013

Jul 14, 2013

+3146

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[input](6/7) *(3/2)[/input]

adminJul 14, 2013

+3146

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pi = 3
proof: multiply both sides by 0
0 = 0
true

adminJul 14, 2013

0

GuestJul 14, 2013

+3146

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[input](22 + 67)/2[/input]

adminJul 14, 2013

+3146

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[input]expand( (2x^2 + 5x + 3)(3x + 1) )[/input]

6*x^3+17*x^2+14*x+3
ax^3 + bx^2 + cx + d

a=6
b=17
c=14
d=3

-------------
(2x^2 + 5x + 3)(3x + 1)
(2x^2 + 5x + 3)*(3x)+ (2x^2 + 5x + 3)*(1)
(6x^3+15x^2+9x) + (2x^2 + 5x + 3)
6x^3+17x^2+ 14x+3

adminJul 14, 2013

0

GuestJul 14, 2013

Jul 13, 2013

+3146

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rajiv:
how to solve 2.5=(1.06)^h

2.5=(1.06)^h

formula: b^h = a equals h = log _b(a) (for a, b>0 and b <>0)

2.5=(1.06)^h

h = log( 2.5, 1.06 )
[input]log( 2.5, 1.06 )[/input]

test:
[input]1.06^15.72520854388776499211876987921071708374706931652257517168334[/input]

adminJul 13, 2013

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press shift and 7 at the same time then you press the on button.

GuestJul 13, 2013

Jul 12, 2013

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3/40 = 7.5%

because 3/40=x/100 and so when you cross multiply (3*100) divided by (40*x) which equals 300/40 which equals x.

or you can just type 3/40 into a calculator and multiply it by 100 to get the percentage

GuestJul 12, 2013

+3146

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[input]400cm in m[/input]

adminJul 12, 2013

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you can use the equation:
percent = (part*100)/total
part = 5 gallons
total = 55 gallons

percent = (5*100)/55 = 9,09090909...

GuestJul 12, 2013

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By definition: 100 cm = 1.00 meter

400 cm = 4.00 m

GuestJul 12, 2013

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100 centimeters to 1 meter

400 cm = 4.00 meters

GuestJul 12, 2013

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My answer:
6:9:5

6+9+5 = 20

6/20*53 = 15.90

9/20*53 = 23.85

5/20*53 = 13.25
------------------------
Total = 53.00

GuestJul 12, 2013

+16

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Answer:-
newton's method - http://math.tutorvista.com/calculus/newton-raphson-method.html to find the largest positive solution is
f(x)=x^4-7x^2-8
f'(x) = 4x^3 -14x

Start out with an initial value x0=4
x1 = x0- f(x0)/f'(x0)
x1 = 4 - f(4)/f'(4)
x1 = 4 - 136/200 = 3.32

x2 = x1 - f(x1)/f'(x1)
x2 = 3.32 - f(3.32) /f'(3.32)
x2 = 3.32 - 36.3365 / 99.8975
x2 = 2.95626205

Proceed this way for 6 more iterations.
x = 2.95626205 7.2022062431
x = 2.84001712 0.5955914357
x = 2.82853399 0.0054411498
x = 2.82842713 4.682e-70000
x = 2.82842712 0.0000000000

x=2.82842712

brosnan123Jul 12, 2013

Jul 11, 2013

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My attempt is not a textbook answer it is very crude:

Assume height h(0) = 0 ft
g = 32.2 ft/sec/sec

Unknown: Velocity at 0 seconds. called, V(0)

V(t) = -g*t + V(0) (from Wikipedia)

h(t) = -0.5*g*t*t + V(0)*t + h(0) (From Wikipedia)
substitute:
h(1) = 186 = -0.5*32.2*1*1 + V(0)*1 + h(0)
h(2) = 344 = -0.5*32.2*2*2 + V(0)*2 + h(0)
Subtract
h(2)-h(1) = 158 = -0.5*32.2*3 + V(0)
158+ 0.5*32.3*3 = V(0)
158 + 4830 = V(0) = 206.30 ft/sec
Therefore, at 8 seconds:
h(8) = -0.5*32.2*8*8 + 206.30*8 = 620.0 ft

GuestJul 11, 2013

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andres:
[input]15/x=100/33[/input]
[input](33*15)/100[/input]

GuestJul 11, 2013

0

Assume h(x) = ax^2+bx+c
So you have for h(1) and h(2):

[1 1 1;4 2 1] * [a;b;c] = [186;344]

substract both lines of the number matrix.
c is cut from the equation so you have b=158-3a, and with this c=28+2a.

After this solve to find a, an you have b and c.
Now it's just do h(8) and i think it works.

Good luck

GuestJul 11, 2013

0

[input]15/33=x/15[/input]
[input](15*100)/33[/input]
45.45(45 periodic)

GuestJul 11, 2013

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25% of 107$ is 26.75$ because: 25:100=x:107
where to found 'x' : 25*107/100=26.75=x
So 25% of 107$ is 26.75$.

GuestJul 11, 2013

0

Multiply by the reciprocal on both sides
In this case the factor of "x" is -2/3 so the reciprocal is -3/2

(-3/2)*(-2/3)*x=(-3/2)*6
x = -9.
QED.

GuestJul 11, 2013

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