Recent content by Richay

I attempted the problem but my freaken fomula kept being weird.. uh weird results Ohkay I get it thanks. The answer is 40 ^__^

Sarah wants to mix 400 liters of a solution that is 57.5 iodine. She has two solutions available. One is 20% iodine and the other is 70% iodine. How many liters of both should Sarah use? Answer in the form: 20% = ?, 70% = ?

For solving this problem? Two containers are on the shelf. The first one contains a 30% iodine solution and the other contains an 80% iodine solution. How much of the 30% solution should be used to get 50 liters of a solution that is 40% iodine? Thanks for any help.

Metric unit conversions - 100 square kilometers to square centimeters Wouldn't the answer be 10000000? English units to metric units - 200 cubic yards to cubic centimeters How would I solve that? And does anybody know how I would enter my answers in the correct Unit Multiplier...

Thanks. I figured out it's 29%

How do i calculate it though? I don't understand the 2,2,&3 that belong to Na,S,&O

b is the value of the y-intercept.

Not "reduction method". My teahcer doesn't teach, he expects us to know everything. Yet, i don't understand how i got the first problem wrong. I understand what I'm doing though, to an extent.

A couple more I'm having problems with. First with linear intercepts. Find the y-intercept of a line going through (3, 0) and having a slope of -5 y=mx+b m = -5 And from then on, I don't know how to continue with this problem. ------ Now, completing the square. Solve...

RETE = RWTW, RE = 200, RW = 250, 9 - TE = TW Answer in the form: (TE, TW) RE(200) x TE(5) = 1000 9-5=4(TW) RW(250) x TW(4) = 1000 I enter the answer 5, 4 But it says I am wrong. ------------------------------- And for another one Solve for the unknown variables...

What would be the formula for solving problems like this? Solve for all variables. RETE = RWTW, RE = 200, RW = 250, 9 - TE = TW Answer in the form: (TE, TW) Seems simple, but not for me.

How on Earth do you do this? What percent by weight of Na2S2O3 is Sodium (Na)? (Na, 23; S, 32; 0, 16) Okay that looks confusing but. The "Na2S2O3" isn't suppose to be spelled like that. It's Na (then a 2 that is haflway beneath the number) And then you repeat with S (lower 2), O and lower...

Man my teacher is a stupid. We had a test on this, My answer is Alex - 900 and Jessica - 500. But he says it's wrong. :devil:

Can somebody double check me on this. At 5 p.m., Alex rode off from Asteroid. One hour later, Jessica rode off from Asteroid in the opposite direction at a speed 400 kph less than that of Alex. If they were 7900 km apart at 11 p.m., how fast did each travel Answer in the form: Alex...

I see, but that makes it confusing for me. That's why i don't understand what to do. I'll take a shot at this. -6n = (n+1)(n+2)...so-so?? I can see that this problem can be figured out, but I can't find the correct numbers... HELP ME. Omg, i can't find a number that will fit in with all the...