Timothy Said:

what's a over 6 + 4a over 6?

We Answered:

pretty much.
a / 6 + 4a / 6
(a + 4a) / 6
5a / 6

??

Jennifer Said:

I need help with math homework. If u help me with this 1 prob then ill prob get the rest. So plz help!?

We Answered:

-7/(3*2*5) - 29/(3*5^2)

-7/2 - 29/5

-93/10

-(3*31)/(2*5)

Duane Said:

Chemistry concentration worksheet helP!?

We Answered:

Moles NaNO3 = 0.45 g /84.9947 g/mol = 0.00529
M = 0.00529 / 0.265 L = 0.0200

moles = M x L = 0.050 x 5.0 = 0.25
Mass NH3 = 0.25 mol x 17.03 g/mol = 4.26 g

Moles H2SO4 = 3.4 / 98 g/mol = 0.0347
Mass water = 3500 g ( density = 1 g/mL)
Moles water = 3500 / 18 g/mol =194.4
total moles = 194.4 + 0.0347 =194.43
Moles fraction H2SO4 = 0.0347 / 194.43 =0.000178
Moles fraction water = 194.4 / 194.43 = 0.9998

Lori Said:

Can you explain this to me......?

We Answered:

1/10 + 5/6

common denominator =30

= 3/30 + 25/30

= 28/30

= 14/15



QED

Eddie Said:

Independent & Dependent Probability worksheet... Help?

We Answered:

It wants you to find the probability of picking out the cards in that order, but then it wants you to find out the probability of the cards of you didn't put the cards you took out back in. At least that's what I think. I'm in 7th grade, but in an 8th grade math class, we haven't done probability yet, but from what we have done, I can tell you that's the most likely thing it's asking.

Otherwise, just ask your teacher, or a friend in that class to help figure it out if I'm wrong.