# Posts by Angel

Total # Posts: 1,139

**Chemistry**

Can an acidic solution be made less acidic by adding an acidic solution?

**Physics**

If mass=100 tones, speed=8kn/s,height above ground=100km. What is the mass in kg?

**life orintation**

Pollution

**MATH**

We want an estimate of the mean time required for ships of a particular class to cross the Pacific Ocean from San Francisco to Tokyo. Little is known about the distribution of the mean time for this class of ships to cross the ocean due to the age variation of the ships. It is...

**Geology**

Why isn't the land surface of Earth flat after millions of years of erosion by mass wasting as well as by other erosional agents?

**Geology**

If you were building a house on a cliff, what would you look for to ensure that your house would not be destroyed through mass wasting? Be thorough! Give me AT LEAST two things.

**Geology**

Describe the effect of shear strength on the following: a.) slope angle b.) orientation of planes of weakness c.) water in soil d.) vegetation Be thorough and THINK!

**Geology**

If you were building a house on a cliff, what would you look for to ensure that your house would not be destroyed through mass wasting?

**science**

please help.....i don't have my txt book with me an i need 2 kno everything bout Non-Vascular and Vascular plants....please rovide a website...........i cant find any

**scirence**

hpw do water and dissolved materials move through non-vascular plants?

**Math**

Draw two different shapes with an area of 6 square units and a perimeter of 12 units

**Maths**

The right rectangular prirm is the diagqam when x=7cm, y=5cm and z=1ocm

**math help!**

How many different 5-person subcommittees can be formed from a club having 13 members?

**chemistry**

why is it a bad idea to use lead in ceramic object that are used to serve food

**Geology**

PLEASE HELP By applying the various principles, draw a cross section of an area in which the following sequences of events occurred. The relative time relationship for all events should be clear to you from your single cross section that shows what the geology looks like at ...

**9th grade math word problems**

i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now? 2) Jennifer is 6 yrs older than Sue. in 4 yrs, she will be twice as old...

**math**

i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now? 2) Jennifer is 6 yrs older than Sue. in 4 yrs, she will be twice as old...

**algebra**

a train leaves at 2pm heading due south at 60 mph. a second train leaves at 3:15pm heading due north at 80 mph. at what time will they be 250 miles apart?

**Chemistry**

Express the rate of the reaction 2C2H6 + 7O2 -> 4CO2 + 6H2O in terms of: a. Delta [C2H6] b. Delta [CO2] Show work please

**Math>>>>if anyone could check my answer**

this problem is difficutl for me i have an answer but im unsure so if someone could check my answer please. heres my problem: A light year is the distance that a light travels through a vacuum (space without matter) in one year. A light year is about 9.46 x 10^12km. The ...

**science**

Replication is called "semi-conservative" because half of the orginal strand is? idk i been workin on the question 4 an hr!!

**survey of science**

if a automobile with a mass of 500kg hits another car that has a mass of 650kg produces a force of 1800n, find the acceleration

**Managerial Accounting**

The questions in this exercise are based on JetBlue Airways Corporation. To answer the questions, you will need to download JetBlue’s 10-K/A for the year ended December 31, 2004 (10K/A with a filing date of March 8, 2005). You do not need to print the 10-K/A to answer the...

**math**

ty

**math**

6n2-19n+15=o (the 2 is an exponent) idk how 2 do it the teacher told us how but didn't show us plz help

**legal terminology**

Defamation through speech or another heard medium is known as A. libel. B. slander. C. damage. D. damage. my answer B

**algebra2**

f(x)=3(x+18)(x-8)

**chemistry**

John has three bottle of mineral acid but does not know which is which since he did not label the bottles before filling them. Suggest a method to which could be used to identify the acids.

**Math**

Convert these unlike fractions to equivalent like fractions and add them. You must use the LCD to get the answer correct. If possible, reduce the final sum. 1/7 = ?/? + 3/14 = ?/? __________ ? - ??

**MATH**

-9 is a member of which subset of real numbers

**English**

also check for Capilization!!

**ENGLISH**

excuse me but I just wanted you to checka nd make sure that my commas was in the right place and if there is any other place I need to put some. I know that it is a little wordless but I am transcribing a message and that is what they said.

**ENGLISH**

Please read for errors and correct them. Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process your application as ...

**geometry**

a cable attach to the top of a tv antenna is 100ft long if the cable is fasten to the ground 28 ft from the base of the antenna how tall is the antenna?

**geometry**

a cable attach to the top of a tv antenna is 100 ft. if the cable is fasten to the ground 28 ft from the base of the antenna how tall is the antenna?

**Life orientation**

Working on holidays. During lunch break.working when you are ill.

**math**

how do i make this a true sentence? 3=4+3-1/2

**Finance**

This morning you purchased a stock that will pay an annual dividend of 1.90 per share next year. You require a 12 percent rate of return and annual dividend increases as 3.5 percent annually. What will be your capital gain be on this stock if you sell it 3 years from now?

**English**

I have to edit these. Add any words needed for grammatical or logical completeness 1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than white doctors. 2. Producers of violent video games are not capable or interested ...

**chemistry**

Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.

**algebra**

ty

**algebra**

i have 2 solve by elimination an i keep gettin fractions when the answer is (-3,-3) my teacher gave me the answer an problem but she wants me 2 work it out idk how i keep gettin fractions the problem is: -3x-4y=21 8x-5y=-9 please help

**algebra**

o ok ty

**algebra**

3x+5y=0 2x-5y=-9 idk how 2 solve it then graph it my teacher eont help me plzz help

**chemistry**

Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion?

**AiMS MATH**

i cant remember how to find the value of the squareroot of 484. can anyone give me some steps or something.

**AiMS MATH**

sorry accidently clikd submit

**AiMS MATH**

i cant remember how to find the value of the squareroot of

**AiMS MATH**

yeah. thx

**AiMS MATH**

-5 Is A Member Of Which Subset Of Real Numbers. a) natural numbers b) whole numbers c) intergers d) rational numbers e) irrational numbers

**algebra**

graph triangle rst with vertices r(-1,3),s(4,-2), t(2,-5) Draw the image triangle r's't' formed by rotating triangle rst 90 degree, 180 degrees, and 270 degrees about the origin. Give the coordinates of r',s', and t'.

**math graphing the y-intercept**

o ok thx

**math graphing the y-intercept**

the website helped but it don't have it for fractons how do i do it with fractions?

**math graphing the y-intercept**

it helps but how do i do fratcions?

**math graphing the y-intercept**

ty

**math graphing the y-intercept**

y=2/3=1 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please

**math graphing the y-intercept**

2 y=- +1 3 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please help

**math graphing the y-intercept**

y=2over3=1 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please

**math**

o ok thx

**math**

8(4u-1)-12u=11(2u-6) 32u-8-12u=22u-66 -12 20u-8=22u-66 -20u -8=2u-66 -8 2u=74 u=37 i kno 1 messed up but idk where

**Spanish 1-Please check and help**

no problemo

**math algebra 1a&1b**

the problem is 2(9n-1)+7(n+6)=-60 i get how 2 do it but i get confused on wat 2 do and then i get mixed up and mess it up please help

**math**

the lenght of the hypotenuse of a right triangle is 4cm. the lenght of one leg iz 2m. find the lenght of the other leg.?

**math**

i thought you had to substract when you have to find the hypothenuse.? and add when you need to fid the lenght of a leg.

**math**

what is the lenghts of the hypothenuse if the lenghts of the legs of a right triangle are 5cm and 12cm.?

**MATH please help!**

which set is infinite? P = {positive numbers less than 60} Q = {whole numbers between 10 and 20} R = {intergers ge=reater than 18} S = {even numbers between 5 and 15} P, Q, R, or S

**Aims Math**

what is the contrapositive of this statement "If two polygons are congruent, then they are also similar"

**Physics**

Consider the resonant frequencies of a 1.78 m tube closed at one end at 24°C. a) Lowest resonant frequency = Hz HELP: You know the length of the tube. What else do you need in order to calculate the frequency of the lowest resonance of a tube that's closed at one end? ...

**Physics**

Ultrasound reflected from an oncoming bloodstream that is moving at 30 cm/s is mixed with the original frequency of 1.3 MHz to produce beats. What is the beat frequency? (Velocity of sound in blood = 1540 m/s.) Beat frequency = Hz HELP: This problem involves two Doppler shifts...

**HSM/220**

Why does it seem like nobody wants to help with this problem? I am lost here too, a simple answer could help soo many people!

**College math**

Analyze x²-6x-5y=1. Determine the vertex, focus, directrix, intercepts, axis of symmetry, and at least 2 other points on the graph.

**college**

Old Hickory rolled into Washington with such force that an era is named after him. Ending years of what he (and many Americans) considered to be elitist government, Jackson threw open the doors of power to the people, and remade the executive branch in the process. Previous to...

**statistics**

A large number of samples of size ‘n’ are selected from a population and the mean of each sample is determined. What can be said about the mean of the sample means

**music**

my school subject is music

**math**

multply to find an equivalent fraction 3/4

**Physics**

A cooling fan is turned off when it is running at 920 rev/min. It turns 1100 revolutions before it comes to a stop. What was the fan's angular acceleration? How long did it take the fan to come to a complete stop?

**Math**

Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of equations using Gaussian Elimination or Gauss-Jordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.

**Qestion bout WH**

how can i get a better gradfe wen i cant remember all the stuff only bits and pieces

**Math**

4/5+8/15=

**Math**

7+(v+w)

**Math**

12;8t=96

**9th grade**

How long was Romeo and Juliet married before the prince exiled Romeo?

**Romeo and Juliet**

How long was Romeo and Juliet married be4 the prince exiled Romeo?

**9th grade Social Studies**

i also have problems studying and understanding social studies. i don't know what to do my grades are way low. can you please give me some tips and ideas on how i can work on it?

**A thanks to Writeacher**

k i will

**A thanks to Writeacher**

THANK YOU lol thank you very much i now understand wat shes sayin myteacher don't really get it either lol wen i asked him in class so thank you very very much

**English (Romeo and Juliet)**

thx ms sue

**English (Romeo and Juliet)**

Where juliet says: "O romeo, romeo!Wherefore art thou Romeo? Deny thy father and refuse thy name; Or if thou wilt not,be sworn my love, And ill no longer be a Capulet" i don't understand what she is sayin and i don't understand what she means

**math**

you can put the matrices into your calculator, if a calculator isnt available you can easily do them out by hand

**5th gr ade social studies**

what is the fact of Each European gropup that set up colonies settled in a specific part of the Americas.

**physics**

F2 is straight up at a 90 degree angle to the x axis, and F1 and F2 form an 120 degree angle

**physics**

The two forces F1 and F2 act on a 27-kg object on a frictionless tabletop. If F1 = 7.1 N and F2 = 33 N, find the net force on the object and its acceleration. WHAT IN the world...how do i figure this out!

**5th grade social studies**

describe the geographical features of your community or region. How might they have influenced people to settle there?

**Physics**

How do you calculate the energy needed to heat 4 kg of water from 25oC to 45oC?

**Chem**

That was all the question gave me I can not figure out how to get the correct answer.

**Chem**

or is 44kJ correct?

**Chem**

What is the enthalpy for the following reaction? overall: C2H4+H2O--->C2H5OH is -1411kJ correct??

**Chemistry**

A 455-g chunk of iron is removed from an oven and plunged into 385g water in an insulated container. The temperature of the water increases from 27 degrees celsius to 89 degrees celsius. If the specific heat of iron is 0.449 J g^-1 degrees Celsius^-1, what must have been the ...

**algebra 2**

Factor: 27X^2-90X+27