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3( x + 4) = 18

3x + 12= 18

subtract 12 from both sides

3x=6

divide each side by 3

x=2

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Home >All Categories > Science & Mathematics >Astronomy & Space >Open Question Anthony O Member since:June 05, 2008Total points:1,319 (Level 3)dark matter, negative energy or anti matter spins in the opposite direction of all its positive counter parts IE all ellscreating static, or electromagnetic field, an energy producing friction?14 seconds ago

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let x=kg of candy 1 (10% fat)
let y=kg of candy 2 (60% fat)

x+y=100
0.1x+0.6y=50

solve the system of equations. one way is substitution
x=y-100
0.1(y-100)+0.6y=50 solve this for y, then you can find x

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Home >All Categories > Science & Mathematics >Biology >Open Question Lorita Member since:April 15, 2011Total points:66 (Level 1)a) Counting the number of derived character states
b) The method of Maximum Parsimony
c) Removing all synapomorphies from both cladograms
d) Removing Mammal characteristics from the used Character StatesAnswer Question

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An acid solution is 0.110 M in HCl and 0.210 M in H2SO4.

Can you show me how to work the problem? Thank you!

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Home >All Categories > Science & Mathematics >Biology >Open Question Supafly Member since:July 31, 2009Total points:23 (Level 1)a.The mother got bacterial food poisoning during her second trimester of pregnancy.
b.The mother washes her body with antibacterial soap every day.
c.The mother has been eating yogurt (with active cultures) every day for the last month.
dThe mother has been on broad-spectrum antibiotics for the two weeks prior to the birth of her child.Answer Question

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Home >All Categories > Science & Mathematics >Mathematics >Open Question Stephani... Member since:April 26, 2006Total points:469 (Level 2)I have a 6x4 inch piece of cedar. I want to cut it on an angle so I will end up with 2 equal pieces (scalene triangles that the lengths of the 3 sides would be 6", 4" and something else. At what angle would that cut be? Or how would figure that out?Answer Question

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How would I write the ratio of mole of NaOH reacting per mole of FeCl3 if...
the moles are:
1.50 mole NaOH
.50 mole of FeCl3

The answer is not 3:1 or 1:3...

~Does anyone actually read these statements entirely?...

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Home >All Categories > Science & Mathematics >Physics >Open Question notmy realname Member since:November 14, 2010Total points:368 (Level 2)Would a shift of weight from one planet to another nearby planet( E.g. from Mars to Earth) cause a change in the orbit of either planet? My question pertains to the idea of scavenging other planets for resources and bring them to this planet on a large scale. Would the shift of weight of such a great magnitude change the orbit of either planet or their rotations?Answer Question

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They would have to be so close that no imaginable material could be dense enough.

The basic formula is F = G Mm/ R^2
G is the universal constant of gravitation. ( = 6.67 * 10 ^ -11)
Rewriting we get R = sqrt ( G Mm/F)
= sqrt(6.67 * 10 ^ -11 * 0.47 *0.10/1.01)
=1.76 * 10 ^ -6 m.

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Home >All Categories > Science & Mathematics >Medicine >Open Question michael b Member since:March 15, 2008Total points:125 (Level 1)I plan on drinking tonight (tuesday) around 10pm or so. I probably will be drinking about 10 shots or more, the most would be 20 shots, in a short amount of time. I have a p.o meeting (possible urine test) the next day around 2pm. Will this be out of my system? I weigh 195lbs and am 6"5. ThanksAnswer Question

by Connor Boon Member since:April 05, 2011Total points:94 (Level 1)While it varies from person to person, it generally takes one hour per drink to leave your system. One drink is one 12oz. beer, a one oz. shot, or 4 oz. or wine. 7 drinks. After 24 hours, there is almost no chance that it would show up on a breathalizer.

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