softballplayer913

How many liters of 12% acid solution should be added to 5 liters of 80% solution to obtain a 40% solution ?

when a certain drug is injected into a muscle, the muscle responds by contracting. The amount of contraction, s, in mm, is related to the concentration of the drug, x, in mm, by s(x)= x/(m+nx) where m and n are constants.

a) find s'(x)

b) Find the rate of contraction when the concentration of the drug is 50mL, m=10 and n=3

Ive tried these but I believe I am so wrong. for a) I got s' (x)= (m+ nx)(-x/(m+nx))

b) .3125 mm

please tell me what I did wrong. thanks

24+19+14+...+(-1)

I cant think of anything

This guy and I went out of 10 months. Im in highschool and so this is my first love. We argued alot and about silly things. He was quite controlling. He wouldnt let me go anywhere with out he and if I did go, he argued with me the whole time about him not being there so I ended up not having any fun anyways. For example I went on my family vacation over the summer and he got very upset that he was not able to come. It ruined my whole week. Then I went to a softball tournament and he got upset about that because he could come. I could spend the night with my friends and so forth. Im a very laid back person and I dont care if my boyfriend goes and parties with his friends everyonce in a while. After that I was just depressed when he was around. He would give dirty loks to my family and friends but would tell me he didnt. They were meant for me.

So one night I broke up with him. He cried and begged me back for 2 days straight. This happened in October. He is still trying to git with me. On Monday I called him and we talked about everything. We were planning to git back together. Then the next day my friend came up to me and told me that he had been trying to git with her all thanksgiving break and before that as well. I told him I was done that was it. But I still love him and we still hang out. Its still fun and even the slightest touch of his hands makes me git butterflies. I dont want to go back on my word and my best friend and family dont like him. Any advice?

What are they? what are they used for? Is this causing them to be in danger? At least give me a website to find the answers on plz

alrite SO I'm not to sure I like this guy but I wouldnt mind going out with him

he's a cutie but not a studd which is fine for me

but like at school lately if we have a project he automaticly yells my name like super fast

then in the gym in the mornings waiting for the bell to ring he fights to sit by me

and when ever Im online he's first to IM me before I can even look at my friends list

so I dont know if he likes me or not

any opinions?

he hated me in 6th but in 7th we had all classes together and we hung out and I helped him with all his girl probs I even scored him a girlfriend and then the last day he gave me a huge hug....

does this mean anything or is it juss me hoping for something?

Alrite I'm n 7th grade and I've been seeing this dude since December and the most we've done is hold hands. I'm really bored with him and he trys to funny when its not the rite time! At the movies I said I was tired and he go well if you get tired my shoulders rite here but in a really weird voice like he didn't wanna sound romantic. I asked mom bout it she says to think bout it. But yesterday I was on the bus with him and usually we have a big group of ppl to hang out with in the gym and non of them were there except me and him. He was getting on my nerves soooo bad! I wanted to smack him, tell him to shut up, and go away! but yesterday I was also having a bad day! Also the Crystal Ball is coming up at our school and I kinda wanna go alone to hang with the girls. Mom said I can still hang with the girls there and have a boifriend. Idk Should I or Should I not? why?

softballplay...

Level 2

I need help!!?

Okay I like this guy. His mom and my mom r the best of friends. So I call her Aunt and I used to call him cousin. Me and him dont call each other cousins anymore we call each other buddy's and we go camping alot together. I dont know if its right for me to like him and he's 15 and I'm 13. He's in 10th grade and I'm in 7th. We always hangout if we can and we trust each other. We both hate my lil sis and if I can ride with him some where me and r both happy but dont show our parents. We luv sitting by each other. Does he like me?? Is alright for me to like him??

Okay I like this guy. His mom and my mom r the best of friends. So I call her Aunt and I used to call him cousin. Me and him dont call each other cousins anymore we call each other buddy's and we go camping alot together. I dont know if its right for me to like him and he's 15 and I'm 13. He's in 10th grade and I'm in 7th. We always hangout if we can and we trust each other. We both hate my lil sis and if I can ride with him some where me and r both happy but dont show our parents. We luv sitting by each other. Does he like me?? Is alright for me to like him??

Okay I like this guy. His mom and my mom r the best of friends. So I call her Aunt and I used to call him cousin. Me and him dont call each other cousins anymore we call each other buddy's and we go camping alot together. I dont know if its right for me to like him and he's 15 and I'm 13. He's in 10th grade and I'm in 7th. We always hangout if we can and we trust each other. We both hate my lil sis and if I can ride with him some where me and r both happy but dont show our parents. We luv sitting by each other. Does he like me?? Is alright for me to like him??

This is in an article i have to summarize for my fourth grade teacher

Ok this guy has played tricks on me and everything else but every time I see him I get nervous and I start liking him and I have to turn my head because I smile really big and laugh a little. Y do I keep on doing this?? Y do I like him this much??

He is a complete gentlemen and he has a good personality but gets cranky alot

Okay I'm medium in weight and losing weight and I have a great personality and everyone in my grade is my friend. I'm pretty 2. Why hasn't any1 asked me out yet.

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My friend can't break up with her boyfriend her self so she wants me to do it. How should I break it to him?

How do u usually flirt with girls cause this guy I like always looks at me and he always makes sure I see him everyday and if I'm standing and he's sitting he offers me his chair.

Okay this guy I like is kinda flirting with me but he has done this before and said he doesn't like me. Then come ot find out when he had a cast on his arm he didn't want me to sign it or at least didn't want me to know people were signing it. Then one weekend he had his b-day party and I had givin him something and he still didn't invite me and didn't want anyone to tell me about it. He also asked me to ask my friend if she would go out with him when he knew I still liked him. Now he brags on and on about how he just got a new laptop. When he isn't doing all this he is really nice and fun to hang around and thats why i like him but after a while I get tired of him and he sees that so he either tells me he likes me or flirts major but then when he thinks or knows I'm getting into him again he will say he doesn't like me or will stop flirting. What should I do? Is he playing hard to get?

What do u like best in a girl? Her personality, hair, looks? What?