Wednesday

April 1, 2015

April 1, 2015

Total # Posts: 386

**Math Help**

Hi! I need help with this question. Thanks! Directions: To solve these problems, you need to find the inverses of these 2x2 matrices. a.) D= [-3 -6 6 12] b.) C= [2 1 7 3]
*March 30, 2015*

**Math**

440
*March 29, 2015*

**Math**

4410+40=4450
*March 29, 2015*

**Math**

Answer 4410
*March 29, 2015*

**Math**

4000(1+0.05)^2
*March 29, 2015*

**Math**

Am suppose to find the compound interest if so could give me the formula
*March 29, 2015*

**Math**

Cary puts $400 he earned from mowing lawns in the bank for two years at an interest rate of 5%. What would be the total amount of money that he would have in the bank be at the end of two years. I=prt I=400(0.05)(2) I=40
*March 29, 2015*

**Math**

Find the amount of interest Nina's saving account will earn after 3 years if her initial deposit was $900 with an 8% simple interest rate. I=prt I=900(0.08)(3) I=216
*March 29, 2015*

**Math**

Answer 200
*March 29, 2015*

**Math**

I=5000 P=50 R=? T= 6 Answer... About 16 or 17%
*March 29, 2015*

**Math**

Dr. Morton puts $5000 in the bank and left it there for 6 months. What simple interest rate she needs to have in order to have made $50 at then end of 6 months?
*March 29, 2015*

**Math**

Thank you
*March 29, 2015*

**Math**

Monica had a saving a account which paid her an interest rate of 4%. After she had this account for 12 years, she had received $192 in interest. How much money had she put into the account at the beginning of the 12 years? Please help me answer this question step by step
*March 29, 2015*

**Math**

Is there any key words that I should remember for each of them
*March 29, 2015*

**Math**

How do you know if a word problem question is asking for simple interest or compound interest? P.s. I already know the formula and what both of them mean
*March 29, 2015*

**chemistry**

How would you make 1L of a buffer of pH=11 starting with 15g of base, C5H11N:. At you disposal are 1M HCl and 1M NaOH, pH meter, balance, distilled water and glassware. Try to be quantitative in expressing amounts of material that you will use. Given for C5H11NH+ pKa=11.25. ...
*March 24, 2015*

**Social studies**

Never mind I got the second question thanks for helping
*March 23, 2015*

**Social studies**

How was 13,14,15 amendments before and how is 13,14,14 amendments now like
*March 23, 2015*

**Social studies**

I still don't get number 1
*March 23, 2015*

**Social studies**

How was 13,14,15 amendments before and how is 13,14,14 amendments after
*March 23, 2015*

**Social studies**

My guess on my first question was that if in early years adult citizen has not pay there taxes they are not allow to vote then. My second is basically how was civil war amendment like before and how is it like now
*March 23, 2015*

**Social studies**

My first question is "how could a poll tax or a literacy test have been usd to prevent someone from voting? My second question is how was civil war amendments before and after
*March 23, 2015*

**Social studies **

How could a poll tax or a literacy test has been used to prevent someone from voting? The Civil war Amendments Before. After
*March 23, 2015*

**Social studies**

They needed land
*March 18, 2015*

**Social studies**

removal of the Indians beyond the white settlements is approaching to a happy consummation
*March 18, 2015*

**Social studies**

Maybe for peace
*March 18, 2015*

**Social studies**

president to negotiate with Indian tribes in the Southern United States for their removal to federal territory west of the Mississippi River in exchange for their ancestral homelands. Is this the answer of number 1
*March 18, 2015*

**Social studies**

I need some websites that could help me find the answer of all three of them cause I'm a bit of confused
*March 18, 2015*

**Social studies **

1.why were American Indians asked to moved? 2. Did the u.s government have the right to ask American Indians to move? 3.what were the benefits of accepting gifts and moving to indian territory.?
*March 18, 2015*

**chemistry**

Put the following compounds in order of INCREASING oxidation number of N: N2H4, NO3-1, N2, NH3 ?
*February 21, 2015*

**Physics **

A car traveling 85km/h slows down at a constant 0.52m/s2 just by "letting up on the gas." Calculate the distance the car coasts before it stops.
*February 8, 2015*

**Math**

The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of sound in ice-cold water, what is the speed of sound in ice-cold water, to the nearest whole number? what i did: 22.04/100 = 32/x i set up this ...
*January 16, 2015*

**Math**

Estimate 12 1/2% of 57
*January 16, 2015*

**MATH**

ARE THE FOLLOWING EQUATIONS INVERSES? y=x^4-7 and y=∜ x+7
*November 19, 2014*

**World History**

The Mongols have a terrible reputation in history as pillagers who destroyed all that met their path. How does this depiction of the Mongols compare with the same people who brought the Pax Mongolia? help please, I don't get it. I have to do this for History, But I don'...
*November 9, 2014*

**prod and oper management**

Hahn Manufacturing purchases a key component of one of its products from a local supplier. The current purchase price is $1,500 per unit. Efforts to standardize parts succeeded to the point that this same component can now be used in five different products. Annual com- ponent...
*September 6, 2014*

**chemistry **

Flask A contains 100 milliliters of a solution with a pH of 5. After you add 100 milliliters of a solution from Flask B, the pH rises to 7. What was the pH of the solution in Flask B?
*September 5, 2014*

**math**

Simplify the numerical expression below 25-4×5
*September 3, 2014*

**Basic Physics**

I don't understand how to work this problem out: Find x-component of vector a ⃗ = (7.0m/s 2 , - y-direction) Please help
*July 9, 2014*

**social studies**

so i have to do a poster on the human characteristics of south america and one of the catagories is goverment systems
*May 1, 2014*

**math**

The length of a rectangle is 3b + 2 and the width is 9b + 6. What is the ratio of its length to its width?
*April 28, 2014*

**Algebra 1**

Why does your body go into shock when you jump in cold water
*March 11, 2014*

**LA check answers?**

D B B B C C A
*March 6, 2014*

**Algebra Readiness**

Sally bakes two cakes, a square and a circle. The length of the side of the square cake is 8 inches. Find the area and the perimeter of the cake heart.
*February 16, 2014*

**Math**

3/4
*February 5, 2014*

**science **

hi I wanna know the safety precautions of using of lead
*January 25, 2014*

**goverment**

“The President of the United States would be liable to be impeached, tried, and, upon conviction of treason, bribery, or other high crimes or misdemeanors, removed from office . . . The person of the king of Great Britain is sacred and inviolable; there is no ...
*January 20, 2014*

**reading**

the past three days have been quiet and enjoyable. What is the subject?
*January 8, 2014*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 30, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 30, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 29, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 28, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 27, 2013*

**Social Studies**

yes I understand her interpretation and I apologize for the inconvenience. I have figured it out now! Thank you so much Ms. Sue! I really appreciate your help! :)
*November 22, 2013*

**Social Studies**

I am so sorry about posting again but I still don't understand the social impact the airplane made at the time when it was invented...
*November 22, 2013*

**Social studies**

Please help quick!
*November 19, 2013*

**Social studies**

Ok Ms. Sue but could you also tell me what the impact was at the time?
*November 19, 2013*

**Social studies**

(respost) I chose the Airplane and I know that it was invented by the Wright brothers etc. But what I don't know what to write a paragraph on is "Describe the social impact the invention had on society". Please help! I really stuck here :? yes, thank you so much ...
*November 19, 2013*

**Socials**

yes, thank you so much Ms. Sue. But the question is stated in past tense which I assume means what the impact was on society at the time, that's what I don't get. Yes, they invented the plane and the ability for mankind to fly but I don't know the impact or even ...
*November 18, 2013*

**Socials**

For socials, we have to do a project on an invention during the industrial revolution time period. I chose the Airplane and I know that it was invented by the Wright brothers etc. But what I don't know what to write a paragraph on is "Describe the social impact the ...
*November 18, 2013*

**science**

Geosphere it was on my test so I know the answer.
*November 10, 2013*

**Probability and Satistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 2, 2013*

**Probability and Statistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 2, 2013*

**Probability and Statistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 1, 2013*

**Chemistry**

A sample of bromine containing isotopes bromine-79 and bromine-81 was analyses in a mass spectrometer. How many peaks corresponding to Br^+ were recorded? A)1 B)2 C)3 D)4 How many peaks corresponding to Br2^+ Were recorded? A)1. B)2. C)3. D)4
*October 18, 2013*

**geometry **

Jk=6r,kl=3r and jl = 27
*October 7, 2013*

**Social Studies**

Thank you! Do they all work? Because I don't think they all answer the questions.. lol
*October 5, 2013*

**Social Studies**

ok, here are my answers, I just don't think the actually answered the questions. It would be amazing if you could help me add a few things and pointers. Thank you Ms. Sue!: 1. The Bishop shows mercy for Valjean and used reason, and thus lies for him so he won't get ...
*October 5, 2013*

**Social Studies**

We watched the Les Miserables movie and were asked to answer a few questions afterwards.I am just unsure if my answers are correct or not for the following questions... 1. How did the Bishop's lie to the police to take cover for Jean Valjean exemplify the thoughts of ...
*October 5, 2013*

**physics**

when maggie applies the brakes of her car, the car slows uniformly from14.3 m/s to 0 m/s in 2.18 s. How far ahead of the stop sign must she apply her brakes in order to stop at the sign? answer in m
*September 30, 2013*

**physics**

when maggie applies the brakes of her car, the car slows uniformly from14.3 m/s to 0 m/s in 2.18 s. How far ahead of the stop sign must she apply her brakes in order to stop at the sign? answer in m
*September 30, 2013*

**Probability and Statistics (Continuation)**

Assume 10% of the engines manufactured on an assembly line are defective. If engines are randomly selected one at a time and tested. What is the probability that the third nondefective engine will be found a)on the fifth trial? b) on or before the fifth trial? MY answers: a) P...
*September 29, 2013*

**Probability and Statistics**

Assume 10% of the engines manufactured on an assembly line are defective. If engines are randomly selected one at a time and tested. What is the probability that the third nondefective engine will be found a)on the fifth trial? b) on or before the fifth trial? MY answers: a) P...
*September 29, 2013*

**Probability and Statistics**

An oil prospector will drill a succession of holes in a given area to find a productive well. The probability that he is successful on a given trial is 0.2. a) What's the probability that that the third hole drilled is the first to yield a productive well? b) If the ...
*September 29, 2013*

**Social studies**

Thank you so much Ms. Sue! But i still don't quite understand the civil rights part..
*September 28, 2013*

**Social studies**

1. A description of life in 17th century England according to a member of the roundheads. 2. The roundheads views on civil rights. Please help quick! (Ms. Sue)
*September 28, 2013*

**French**

The following remarks were heard in a French restaurant. Complete them with the appropriate definite, indefinite, or partitive article. 1. Est ce que vous prenez______ vin ou ______ avec votre repas? 2. J'aime beaucoup ______ poisson. Je vais commander ______ sole! 3.Est-...
*September 25, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 22, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 20, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 19, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 19, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 18, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 18, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 17, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 17, 2013*

**physics**

A police car is traveling at a velocity of 19.0 m/s due north, when a car zooms by at a constant velocity of 49.0 m/s due north. After a reaction time 0.600 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...
*September 15, 2013*

**physics**

A pellet gun is fired straight downward from the edge of a cliff that is 13.4 m above the ground. The pellet strikes the ground with a speed of 26.1 m/s. How far above the cliff edge would the pellet have gone had the gun been fired straight upward?
*September 15, 2013*

**physics**

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 5.25 m/s. The car is a distance d away. The bear is 39.8 m behind the tourist and running at 7.36 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
*September 15, 2013*

**Physics**

A rocket is fired at a speed of 96.0 m/s from ground level, at an angle of 35.0 ° above the horizontal. The rocket is fired toward an 15.2-m high wall, which is located 32.0 m away. The rocket attains its launch speed in a negligibly short period of time, after which its ...
*September 15, 2013*

**Physics**

A tennis ball is struck and departs from the racket horizontally with a speed of 29.1 m/s. The ball hits the court at a horizontal distance of 19.0 from the racket. How far above the court is the tennis ball when it leaves the racket?
*September 15, 2013*

**Fluid Mechanics**

Water flows into a cylindrical tank through pipe 1 at a rate of 25 ft/s and leaves through pipe 2 at 10 ft/s and through pipe 3 at 12 ft/s. Pipe 4 is an open air vent. Internal diameters of the pipes are: D1=3 in, D2= 2 in, D3=2.5 in, D4=2 in. Calculate a) dh/dt and b) the ...
*September 10, 2013*

**Material science/ Mechanics**

A cube polymer matrix is subjected to elastic deformation in compression by 10 N applied force. The cube is deformed by 20% of its original shape. The cube side has a length of 1 m. If you assume that the polymer has the intrinsic properties of rubber, find the storage shear ...
*September 8, 2013*

**algebra**

Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(
*August 22, 2013*

**algebra **

Solve the formula for the variable given.Then use the given information to find the value of the variable. A=2πrw Find r if w=4ft And A=120ft square. Please someone help me with this!!!
*August 22, 2013*

**math**

caca
*August 13, 2013*

**Psychology Help Please**

When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is influenced by three ...
*June 6, 2013*

**math**

Logarithm 3^3x+1=3^5x-2 3^3x+1-3^5x-2=0 Log(3^3x+1-3^5x-2)=log0 Please explain to me why is the last step is wrong
*May 22, 2013*

**math**

How would I solve this: Mr. Merrill has 3 times as many nickels as dimes. The coins have a total of $1.50. How many of each coin does he have?
*April 20, 2013*

**Bio-Micro Help Please!!!**

1) why is it important from a clinical standpoint to perform a B-lactamase test? Explain! 2) if the B-lactamase test was positive, what might you do to determine a viable treatment option? 3) why might Augmentin (amoxicillin clavulanate) be prescribed for an individual that ...
*April 18, 2013*