Saturday

April 19, 2014

April 19, 2014

Total # Posts: 148

**math**

find the ratio please!! 10m² over 2m^5 a. 5 over m³ b. 5m³ c. m³ over 5 d. 1 over 5m³

**math**

3 and 3/4 miles I believe!

**math help**

Simplify. 8x^7y^4 over 2x³y² a. 16x³y^4 b. 16x^4y² c. 4x³y^4 d. 4x^4y² I appreciate it help!

**trig**

Use a calculator to find: θ if θ = csc-1 1.7516. θ = _____°. Round to three decimal places.

**Chem**

Which formula represents an unsaturated hydrocarbon? a. C3H6 b. C3H8 Is the answer B? Thanks! :)

**PreCalc**

Why when graphing a regular tan graph, the period is pi but when I graph a sin or cos it has a period of 2pi?

**Equivalent Fractions**

Idk what you guys are saying but....what is equivalent to 5/36!?!?!?

**chem**

when hydrocarbons are burned in a limited amount of air CO as well as CO2 form. When 0.450 grams of a particular hydrocarbon was burned in air, 0.467 grams of CO, 0.733 grams of CO2, and 0.450 grams of H20 were formed. a. What is the empirical formula? I got C2H3! check? b. Ho...

**precalc**

use power reducing identities to prove the identity sin^4x=1/8(3-4cos2x+cos4x) cos^3x=(1/2cosx) (1+cos2x) thanks :)

**chem**

hemoglobin, the oxygen-carrying protein in red blood cells, has four iron atoms per molecule and contains .340 percent iron by mass. calculate the molar mass of hemoglobin! thanks! :)

**apush**

was it a religious difference that sparked the leisler rebellion in new york?

**apush**

I am still a little bit confused. So during the Glorious Revolution, King James II was overthrown and replaced by William and Mary as co-rulers. Then why did Jacob Leisler rebel against the policies of the King James the II?

**apush**

Why did Leisler Rebellion start? How was it related to the Glorious Revolution?

**apush leisler rebellion**

James II became King of England in 1685 and New York became a royal colony. James II decreed the formation of the Dominion of New England in 1686 and added the colonies of New York and New Jersey in May 1688, designating New York City as the capital. In late 1688, the Glorious...

**math-law of sins**

Okay, so all three of these are cases where the triangle does not exist?

**math-law of sins**

solve the triangle: 1. A= 61 degrees a=8 b=21 2. A=136 degrees a=15 b=28 3. C=115 degrees b=12 c=7 For all of these problems I used law of sins and when I input it into my calculator I get domain error after doing sin inverse to get an angle degree. What am I doing wrong?

**us history**

for Leisler Rebellion, what happens in the end? I understand that Leisler and his son in law were arrested and then hanged for treason. But what happened after that? The goverment regain control? Also for Bacon's Rebellion, what also happens in the end before Bacon died of...

**sat math**

thanks! :)

**sat math**

At a certain hospital, 89 children were born in the month of June. If more children were born on the fifteenth of June than on any other day in June, what is the least number of children that could have been born on the fifteenth of June? The number of days is not given, is it...

**us history**

Compare and contrast bacons' rebellion with leisler's rebellion. Were there any common causes or patterns that link these rebellions together? I know that Bacon's Rebellion was Nathaniel Bacon going against the Governor Berkeley's order and wanted to kill the N...

**trig**

so cos would be root 15/ 4 and cot would be 1/ root 15? one more question, how do you know it is in the second quadrant?

**trig**

find sin theta and tan theta if cos theta = 2/3 and cot theta is >0 and find cos theta and cot theta if sin theta = 1/3 and tan theta is <0 thanks! :)

**math**

the lab keeps two acid solutions on hand. one is 20% and the other is 35%. how much 20% and how much 35% acid solution should be used to prepare 25 liters of a 26% solution?

**us history**

I am well aware that no one will write my assignments for me, I was just looking for some differences and comparison between the two...

**us history**

compare and contrast early settler's relations with native Americans in early Virginia and new England, thanks!

**chem**

would you expect the nonbonding electron pair domain in nh3 to be greater or less in size than for the corresponding one in PH3?

**chem**

how are the length of single, double, and triple bonds between the same kinds of atoms compare?

**factoring**

is x^3 +8 factorable?

**how to find domain and range**

how do I find the domain and range of y= 5/(2x+1) -4

**naming acids and bases**

how do you name acids and bases?

**alg2**

solve for 10/x^2-2x + 4/x = 5/x-2 3x/x+1 + 6/2x = 7/x 8(x-1)/x^2-4 = 4/x-2 check for any extraneous solutions! thanks!

**algebra**

how do you solve 15+x=3x-17?

**chem**

What mass of ice at 0°C can be melted by the addition of 1670 joules of heat? When the temperature is decreased on the following system at equilibrium: 2 HCl(aq) + Mg(s) <--> MgCl2(aq) + H2(g) + heat a. In order to restore equilibrium, the reaction shifts left, towar...

**chem**

yeah i drew it, and i got the for bonding pairs. so it has zero lone pairs correct?

**chem**

CF4 how would you determine the molecular shape using vsepr? i got that it has 32 electrons and four bonds. im stuck on how to get the non bonding domains and shape and bond angle! thanks!

**math**

people flock to andys lemonade stand because each cup of lemonade is only 35 cents. sometimes customers buy several cups of lemonade.Andy and his helpers have to figure out how much to charge each time someone buys more than 1 cup of lemonade. what could they do to save time?

**electron configuration shorthand method?**

thank you! I think I kinda understand it now!

**electron configuration shorthand method?**

I missed school today so the hw is a bit confusing and I have a quiz on this tmr. For example I have Br which has 35 electrons. [Ar]_______ and then what do I do? How do I know what to put next? how would you do Phosphorus? thanks!

**chem**

what are three different situations in which the diffusion of gases is desired or not desired. what could you do to increase the rate of diffusion(for a desired gas) or slow the diffusion( for an undesired gas)?

**please help! solve for x**

2^x+3=5^3x-1 thanks!

**logs**

how would you use log which has a subscript of 2 5 to approximate log subscript 2 50 and log subscript 2 0.4?

**math alg2trig**

how would you find the horizontal and vertical asymptote of y=x+2/x-3 and y=-3x+2/-4x-5? thanks

**chem**

explain why bubble wrap pops when u squeeze it

**chem**

why does a car tire's pressure increase during summer months? why do they under inflate during winter months? does a basketball bounce higher when the air inside it is cold or warm? thanks!

**chem**

oh okay thanks! also what would be considered as a free element? would 4Al be one?

**chem**

a considerable amount of heat is required for the decomposition of aluminum oxide. 2Al2O3-> 4Al(s)+ 3O2(g) change in heat= 3352KJ a. what is the heat change for the formation of 1 mol of aluminum oxide from its elements? i got this one. my answer is -1676.0KJ but i didnt ge...

**alg 2 log**

expand ln22x ln3xy^3 thanks :)

**chem**

a sealed cylinder of a gas contains nitrogen gas at 1.00*10^3 kPa pressure and a temperature of 20C. They cylinder is left in the sun and the temperature of the gas increases to 50C. What is the new pressure in the cylinder?

**Chem**

explain why the boiling point of temperature of water in a pressure cooker can be greater than 100C

**Chem**

how can the concept of specific heat capacity of water be used to explain the heating and cooling patterns of oceans and climate on the plane?

**chem**

wait. is it 4.186 J/g*C? so the answer is 280.462 KJ?

**chem**

thanks. q=1000g x specific heat x 67C what is the specific heat?

**chem**

how do u change L to grams?

**chem**

how many kilojoules of heat are absorbed when 1.00 L of water is heated from 18C to 85C? density of water is 1.0 g/ml

**chem**

thanks, i got 74.77% :)

**chem**

*yield

**chem**

phosphorus (12.28g) reacts with excess of oxygen gas to form 21.04 grams of diphosphorus penatoxide. what is the theoretical yile in grams of this reaction? im not sure how exactly do you start this?

**chemistry**

17.8 grams of CH4 reacts with 55.4 g of )2 to from CO2 and H20 what is the mass of H20 formed? and how much excess reactant is leftover? so i think that O2 is the limiting reagent and CH4 is the excess reagent help?

**chemistrt**

wait, i think i did it wrong. there is actually 0.865 moles of CO2 from the O2. SO the limiting reagent is O2?

**chemistrt**

okay, i was taught to pick one of the reactant and convert it to the other one. so i got 1.11 mole of CO2 and 1.73 mole of CO2. so that means that CH4 is the limiting reagent? 1.11 mole of CO2 * 44.01 g of cO2 is 48.9 grams of CO2

**chemistrt**

equation: CH4+ 2O2 = CO2 +2H20 1.11 moles of CH4 1.73 moles of O2 wait. why do we convert moles of CH4 to moles of CO2? and moles of O2 to moles of CO2?

**chemistrt**

17.8 g of CH4 react with 55.4 g of O2 to form CO2 and H20 identify the limiting and excess reagent. what is the mass of CO2 produced? how much excess reactant is leftover?

**chem h**

Methanol (CH3OH) is used in the production of many chemicals. methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2H2(g) ==> CH3OH(g) a) How many moles of each reactant are needed to produce 3.60 x 10^2 g CH3OH? b)Calculate t...

**Morpheme Practice (Lit)**

Hi I'm confused on what is an stem extender and morphemes. Underline any stem extenders in the word below. Philosophy Banana Pheumectomy Anthropology How many morphemes do the following contain? Sown 1 Airsickness 2? Ohio 1 Algebra not sure. expel 1? Congenital 2? Cognate ...

**Past tense and Present tense in essay**

Thanks, but isn't "written" past tense?

**Past tense and Present tense in essay**

“Antigone” written by Sophocles shows Antigone, the main character as a tragic hero. Antigone is the true tragic hero because she acts without anticipating the consequences of her rebellion, realizes she has made an irreversible mistake only after it is too late to f...

**Antigone Essay due tmr!**

I think it is too late to change my thesis... "realizes she has made an irreversible mistake" came from my teacher...

**Antigone Essay due tmr!**

Antigone is the true tragic hero because she acts without anticipating the consequences of her rebellion, realizes she has made an irreversible mistake only after it is too late to fix it, and is responsible for an unhappy ending for all of the characters. This is my thesis. I...

**factoring polynomials help?**

16x^4-1 4x^4+39x^2-10 find the real number solutions of these equations. 3x^4+15x^2-72=0 x^3+2x^2-x=0 Thanks!

**Industrial Revolution**

Can I have a 8-10 sentence summary on the basics of the industrial revolution?

**Geometry **

how do you find the area of an octagon with the radius of four?

**Geometry**

how is the distance formula related to the pythagorean theorem?

**freedom similes and metaphors?**

I'm stuck on what to write for freedom similes and metaphors? help? Thanks!

**transitional math**

Im stuck on questions can anyone help me ? A)Which situation can be modeled by tossing a coin 3 times choosing which one of sixteen teams will win a tournament? B)picking one of six math teacher, C)decide which English teacher of eight will win a trip to London D)selecting a d...

**Geometry **

abcd is parallelogram. abde is a kite, ad= 18 cm and be = 10cm. find abcde thanks :)

**geometry regular polygon**

a=? s=10.5cm A= 19,887.5cm squared Pentagon A=asn/2 19,887.5cm=a*10.5*5/2 39775=52.5a a=757.61cm? am i correct? regular nonagon a=9.6cm A=302.4cm squared find perimeter thanks!

**Physics**

A 1550 kg automobile has a wheel base (the distance between the axles) of 3.00 m. The center of mass of the automobile is on the center line at a point 1.10 m behind the front axle. Find the force exerted by the ground on each wheel. force on each rear wheel ___ kN (upward) fo...

**area**

yes it was. it also said ignore all doors and windows..

**area**

thanks. i was a bit confused of why there were 3 numbers that is why i ignored the 3m part.. Thanks! :D

**area**

what is the total area of the four walls of a rectangular room 4 meters long by 5.5 meters wide by 3 meters high? is it 4 times 5.5? then times four since there are 4 walls? 88m squared?

**Geometry altitude**

a(-2,4) b (4,6) c (-4,-4) find the equation for the altitude from each vertex of triangle abc.

**Geometry Ms. Sue help please?**

Ms. Sue, can you help me again? you replied to my question but i still need a bit of help Small Pizza- radius 6 in. cost $9.75 Medium- radius 8in cost $12 Large-diameter 20 in cost $16.50 The edge is stuffed with cheese, and its the best part of the pizza/ What size has the mo...

**Geometry check my answer? **

medium- $0.238 large- $0.262 Then what do i do? I am kind of very confused.

**Geometry check my answer? **

Small Pizza- radius 6 in. cost $9.75 Medium- radius 8in cost $12 Large-diameter 20 in cost $16.50 The edge is stuffed with cheese, and its the best part of the pizza/ What size has the most pizza edge pr dollar? what is the circumference of this pizza? ------------ so i find t...

**Geometry check my answer? **

What does ^ mean?

**Geometry check my answer? **

The diameter of a car tire is approximately 0.6meters. The warranty is good for 70,000 km. About how many revolutions will the tire make before the warranty is up? More than a million? a billion? ----------------------- my work c=pi*d c=3.14*0.6 c=1.884 meters 1km=1000 meters ...

**Geometry check my answer? **

Thanks so much! c=56*3.14 :)

**Geometry check my answer? **

Wilbur Wrong is flying his remote control plane in a circle with a radius of 28 meters. His brother clocks the plane at 16 seconds per revolution. What is the speed of the plane? Express your answer in meters per second. The brothers may be wrong, but you could be right! -----...

**Geometry **

A satellite in a nearly circular orbit is 2000 km above Earth's surface. The radius of Earth is approximately 6400 km. If the satellite completes its orbit in 112 hours, calculate the speed of the satellite in kilometers per hour. Please help me. I have a math test tomorrow.

**Math**

What is the function rule for input 3,2,10 output 15,10,50

**spelling**

to correct-need words ending x,cks,ks

**childcare**

I needed to answer the same question. Through all of my research in the text and internet the only answer I could say that made sense was d. I happen to think that it also might be b. but couldn't find anything to back this answer up.

**Asia**

What kinds of natural vegetation are found in each of Russia's climate regions?

**French **

umm... which one is it? is one the regular conjugation? and the second one is passe compose? I need both.. thanks!

**French **

what is it in the passe compose? I just returned my textbook today......

**French **

What is the conjugation of vouloir?

**Math Graphing**

Graph this: y greater than or equal to 2x-3 2x-2y is less than or equal to 1 2x-2y is less than or equal to 1 2x is less than or equal 2y x is less than or equal y how do u graph this? how to graph x is less than or equal to y?

**Alg.1 standard form**

write an equation in standard form of the line containing (-1,1) and (6,-1) (-1,1) (6, -1) --------- (7,-2) -----> m= -2/7 and then u plug it in the point slope form? somehow i feel im doing something wrong...

**SS Civil WAr**

Thank you very much!

**SS Civil WAr**

What was 3 inferences about life during the time period of the american civil war? 1. Many people died of wounds and doctors not treating them properly 2. There wasn't much food for them to eat 3. (i'm kinda stuck)