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This A Practice Review So Help Plz

Math help plz!!!?

Well, i'm in geometry and my teacher gives us WPS (Weekly Practice Sheets). its basically reviews from stuff we learned before. Its just that i have no idea what these problems are...

1. Find the area of a circle that fits tightly in a square with sides equal to 14 inches.

2. Factor: 2x(squared) - 50

3. Simplify (DO NOT SOLVE): square root of 2 * square root of 18.

4. Simplify: 5(2x-4) + 3(-3x+7)

CHEM FINAL TOMORROW AND I NEED HELP IN THESE REVIEW QUESTION!?

1) When 3.00 g potassium carbonate (K2CO3 ) was mixed with 20.0 mL of hydrochloric acid (HCl, 4.0M) in a calorimeter, the temperature raised 3.0 oC.

a. Write down the balanced reaction equation between K2CO3 and HCl.
b. Calculate the enthalpy change (∆H) of the reaction for per mole potassium carbonate. Assume the specific heat of all solutions are 4.18 J/g.oC and all solutions have a density =1.0 g/mL.


2) The stock solution contains Sr (10 mg/L), Mg (5 mg/L) and K (20mg/L). A student use 2.0 mL of the stock solution to make 50.0 ml of diluted solution.Calculate the concentration of Sr, Mg and K in the diluted solution.


3) Use Hess’s Law to find the reaction enthalpy for the following reaction:
N2 + 2O2 -------> 2NO2 ∆H =?

From N2 + O2 --------> 2 NO ∆H1 = 180kJ
2NO + O2 --------> 2 NO2 ∆H2 = -112kJ

American History HW Review?

1.
Britain agreed to a division of the Oregon territory at the 49th parallel so long as it retained
possession of:

1. Vancouver Island
2. the Puget Sound.
3. the Columbia River
4. the Willamette Valley
5. Ontario


2.
From the very beginning of the 1840s, thousands of American emigrants on the overland trails
lost their lives to hostile Indian raids.

True or False


3.
Although a belief in the special economic and social opportunities of the frontier encouraged
emigration, the dream was more often illusory than real.

True or False


4.
Tribal warfare among the Plains Indians was not fought to exterminate enemies nor claim
territory, but rather to steal horses and to prove individual valor.

True or False

5.
ʺJoseph Smith and other church leaders had secretly practiced polygamy in the early 1840s....ʺ
For Mormons, polygamy was the practice of:

1. sharing all lands and profits
2. worshipping many gods.
3. electing several church leaders
4. having more than one wife
5. having multiple households


6.
Most of the emigrants who headed for the Far West were:

1. white and born in America.
2. slaveholders from the Deep South.
3. members of the poorest class.
4. Asians, especially from China.
5. from southern and eastern Europe.

REPORT CARD CHANGE Plz Help!=[[?

Okay, So I Juss Got My Report Card And It'sz, Not Very Good...I Need Help On How To Change It && Fast! I Dnt Have Photoshop And The Paint Thingie Didnt Work For Me, Anything Else? I REALLY Could Use The Help =\



** If Yur Gonna Write "Oh No Dnt Do It Juss Tell Yur Parents Blah Blah Blah" Im Not Even Gonna Bother Reading I Juss Need Sum Help =*[

Is this a bad ACT score?

That's not a good score. i'm trying to stay positive hear, but you should've done better esp. if you want to go to a college of your choice. I'm beating myself up and I got a 23. Study, study, study, study. Can't say that enough. Practice tests on the ACT website, act.org will really help. Getting review books and taking extra classes in school to help prepare come in handy as well. The first ACT test date for the 2008-2009 year is October 25th...you definately have to be there if you want to go to a good school. There are some who will accept you without caring much about test scores, and they aren't bad schools, some are very good infact and very affordable compared to others, but you need at least a 20 to get into any public university. If you want to go to a more selective school, you need at least a 25 or better.

You score of a 13 means out of 100 people, you scored better than 5! A 13 on the ACT is equal to a 900 on the SAT and you get that by spelling your name correctly! You really need to get a better score...a much better one.

I need help... I forgot how to do this and my algebra section exam is in 2 days plz help?

so basically this is the practice question... A piggy bank contains nickels and dimes. There are 160 total coins valuing $10.50. Think about a system of equations that can be used to represent the number of nickels and dimes and then think through using substitution to solve the system of equations. How many nickels are in the piggy bank?

Physics Help! Suppose you have three objects of equal mass.?

The first object has a volume of 5 cm3 and is made of a material of density 2 g/cm3. The second object has a volume of 10 cm3 and is made of a material of density 1 g/cm3. What is the density ρ of the material of the third object if its volume is 15 cm3?

Difficulty of raising ACT math section?

Hello. I'm just curious, how hard is it to raise your ACT math score? I score very high on all the other sections, and I'm willing to put in the time and practice to raise my ACT math score, but honestly, how hard is it? It seems like a relatively easy section to do good in if you just study the material. I have the Princeton Review book so i'll definitely take a look at its math section, but I'm just wondering if raising your ACT math score is an easy feat, or a rather difficult one? Oh, and by the way, my math score is 30 as of right now, but I would like it to be around the 33-35 range, so how difficult is it?

Thanks in advance to any answers.

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