Saturday

October 22, 2016
Total # Posts: 5,585

**GEOMETRY HELP PLEASE**

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$. Find the area of the trapezoid.

*April 23, 2016*

**History**

“Without consideration of ‘traditions’ and prejudices, it [Germany] must find the courage to gather our people and their strength for an advance along the road that will lead this people from its present restricted living space to new land and soil, and hence ...

*April 22, 2016*

**Precalculs**

solve using matricies x+2y+3z=7 -x+2y-z=1 -x+y-2z=-2 x= y= z= ive tried everyway I can think of please help

*April 21, 2016*

**History**

What was the Columbian Exchange? A. The exchange of new goods globally as a result of European exploration B. A trading post established by Christopher Columbus C. An economic system set up by Christopher Columbus in the Americas D. The trading of goods from Columbia to North ...

*April 20, 2016*

**History**

thank you..its B

*April 20, 2016*

**History**

Sir Thomas More was executed because he A. would not stand with Henry VIII against the Protestant revolt. B. would not accept Henry VIII as head of the Church in England. C. protested the corruption of the Roman Catholic Church. D. set up a utopian community based on Calvinist...

*April 20, 2016*

**Math **

Use the acidity model given by pH = −log[H+], where acidity (pH) is a measure of the hydrogen ion concentration [H+] (measured in moles of hydrogen per liter) of a solution. Compute [H+] for a solution in which pH = 6.2. (Enter your answer in scientific notation. Round ...

*April 20, 2016*

**Geometry- URGENT PLEASE HELP!!**

Medians $\overline{AX}$ and $\overline{BY}$ of $\triangle ABC$ are perpendicular at point $G$. Prove that $AB = CG$. In your diagram, $\angle AGB$ should appear to be a right angle.

*April 19, 2016*

**Business Stats**

Regression Analysis: Avg. Tot. Score versus %Takers, T/S Ratio Model Summary S R-sq R-sq(adj) R-sq(pred) 34.2385 79.91% 79.06% 76.83% Coefficients Term Coef SE Coef T-Value P-Value VIF Constant 1118.5 39.5 28.34 0.000 %Takers -2.547 0.187 -13.62 0.000 1.05 T/S Ratio -3.73 2....

*April 19, 2016*

**Math**

Mr. Jacobs budgeted $1,200 for tiles his sketch of the floor requires him to use 38 white tiles each white tile cost $12

*April 18, 2016*

**English**

Ok, thanks. But how do I actually write the paragraph? As to say, in the 1st sentence what should I write? and same to the 2nd, 3rd , 4th, 5th, and so on. As an example..

*April 16, 2016*

**English**

How do I write a paragraph response based on a book-chapter? Thanks in advance!

*April 16, 2016*

**Personal Finance**

To stretch your income during retirement, you could: A. skip leisure activities. B. cut your food expenditures. C. cancel your life and property insurance. D. use your skills and time instead of your money. I think its A..

*April 15, 2016*

**Personal Finance**

If overall interest rates in the economy rise, a corporate bond with a fixed interest rate will generally: A. increase in value. B. decrease in value. C. remain unchanged. D. become worthless. B?

*April 15, 2016*

**Math**

Thank you

*April 13, 2016*

**Math**

Terry buys a shirt for $14.99 and a pair of jeans for $39.99. If the sales tax is 8.25%, what is the total price Terry pays for the items? Can someone please show me how to work this problem?

*April 13, 2016*

**english**

What best completes this statement about "London, 1802"? In Lines 9 and 10 Wordsworth uses _____. personification metaphor simile allusion line9 Thy soul was like a star, and dwelt apart; line10 Thou hadst a voice whose sound was like the Sea:

*April 12, 2016*

**EASY Pre-Algebra**

In the following situation, determine whether you are asked to determine the number of permutations or combinations. Then do the calculation. How many ways can the four offices of chairman, vice chairman, secretary, and treasurer be filled from a club with 28 members?

*April 11, 2016*

**Physics**

A ball is thrown from the ground toward a cliff of height h with a speed of 30.0 m/s and an angle of 60o above horizontal. It lands on the cliff 4.00 s later. How high is the cliff? Answer: 25.5 m But having difficulty getting this answer

*April 10, 2016*

**Physics**

You take a trip in your car. Starting from rest, you accelerate at 1.00 m/s2 for 10.0 s, heading north. You then stop accelerating and immediately head west at a constant speed for an additional 20.0 s, at which point, you crash into a building coming to an instant stop. At ...

*April 10, 2016*

**Calculus**

A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $60/ft and on the other three sides by a metal fence costing $50/ft. If the area of the garden is 102 square feet, find the dimensions of the garden that minimize the cost.

*April 9, 2016*

**speech for history**

Traditonal africa marriage is an advantage for men only,not women

*April 9, 2016*

**Chemistry**

Both ethanol (CH3CH2OH, MM=46.07g/mol) and methanol (CH3OH, MM=32.04g/mol) have been considered as fuels for automobiles. Which is the better fuel, on a per gram basis, when burned with oxygen? CH3CH2OH(g) DeltaHf(KJ/molrxn) = -235.10 H3OH (g) DeltaHf(KJ/molrxn) = -200.66 H2O...

*April 7, 2016*

**Writing**

Please, need help. Anyone, I'll appreciated! For western history class, what did Arab culture look like before the appearance of Muhammad and Islam?

*April 4, 2016*

**English**

Is Mercutio a foil to the Nurse? I think they are not, but can you please check my answer? Thanks

*April 3, 2016*

**Math**

A girl bought mangoes at 7.50 each. There were two types of mangoes: good ones and not so good ones. She sold the good ones at 7.90 each and the not-so-good ones at 7.70 each. If she earned 34, how many mangoes did she buy?

*April 3, 2016*

**Chemistry**

A 26.8 mL sample of a solution of RbOH is neutralized by 15.71 mL of a 1.918 M solution of HBr. What is the molarity of the RbOH solution?

*April 1, 2016*

**social studies**

thx

*April 1, 2016*

**social studies **

what was the supreme court's ruling on the dred scott case?

*April 1, 2016*

**Social Studies 9**

Purpose some reasons why women were unable to keep leadership positions during the rein of terror? There is nothing about this in my textbook.

*March 30, 2016*

**math**

90% as a decimal is 0.9. If you multiply 0.9(the result on the test)x90 (how many questions there were) you get 81. Peggy got 81 questions right out of 90 which is 90%.

*March 30, 2016*

**English**

In class, we are studying Romeo and Juliet. Do you know what tragedies afflicted Peter ,the servant to the Nurse? I know that the Nurse was affected by the death of her husband and child. However, I don't know what tragedy affected the apothecary or minstrels. Was the ...

*March 30, 2016*

**english**

so (not come unless you invite him)

*March 30, 2016*

**english**

can anyone help

*March 30, 2016*

**english**

(will not) ???

*March 30, 2016*

**english**

Put parentheses around the adverb clause by placing the parentheses in their correct locations. He will not come unless you invite him.

*March 30, 2016*

**english**

parentheses around (because he canceled the party)

*March 30, 2016*

**english**

Put parentheses around the adverb clause by placing the parentheses in their correct locations. He hasn't showed up here because he canceled the party.

*March 30, 2016*

**english**

thank you

*March 30, 2016*

**english**

would it be (in case i am called away)

*March 30, 2016*

**english**

Put parentheses around the adverb clause by placing the parentheses in their correct locations. Please get my mail in case i am called away.

*March 30, 2016*

**Chemistry**

@DrBob222 I got the last question that I posted wrong and I solved it the same way. Could you show me the answer and how you got it? My test is Friday and this is a practice problem. Suppose that 30 mL of 0.5 M CsOH and 55 mL of 0.1 M NaHS are mixed. What is the K for the ...

*March 29, 2016*

**Chemistry**

Suppose that 30 mL of 0.5 M CsOH and 55 mL of 0.1 M NaHS are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.? Ka of HS- 1/Ka of HS- Kb of OH- 1/Kb of OH- Kb of S-2 1/Kb of S-2 Kw 1/Kw There is no reaction.

*March 29, 2016*

**Chemistry**

Suppose that 85 mL of 0.4 M NaF and 50 mL of 0.4 M HCl are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.? Ka of HCl 1/Ka of HCl Ka of HF 1/Ka of HF Kb of F- 1/Kb of F- Kb of Cl- 1/Kb of Cl- Kw 1/Kw There is no reaction.

*March 29, 2016*

**math**

a 12.0 gallon gasoline tank holds 66.0 pounds of gasoline. If this gasoline cost $3.50/gallon, what is the cost of 1 gram of gasoline.. I need help with just the set up part.. I don't know where to start.. help please

*March 29, 2016*

**Chemistry**

What is the complete ionic equation for the following reaction? Aqueous iron(III) sulfate is added to aqueous sodium sulfide to produce solid iron(III) sulfide and aqueous sodium sulfate.

*March 28, 2016*

**EASY Math**

The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is worth $14,000, find the age of the car.

*March 28, 2016*

**Statistics**

How do I find a P VALUE given the Z statistic using the empirical rule? Doing this by hand

*March 28, 2016*

**Statistics**

How do I find a p value given the Z statistic using the empirical rule?

*March 28, 2016*

**Math**

The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is worth $14,000, find the age of the car.

*March 27, 2016*

**English grammar**

1. Some of the pie IS missing 2. All of the pies ARE missing

*March 27, 2016*

**Calculus **

Suppose you are in a room that is a*10 meters. You can walk normally along the "a" meter long wall at "s" meters per second and crab walk in any direction at 1 meter per second. You start at one corner of the room, walk normally along the wall of length &...

*March 25, 2016*

**Calculus**

Suppose x; y, and z are positive numbers that sum to 10. What is the largest possible value of xy + xz + yz? (a) First, suppose that z is a fixed parameter. Then we have to find nonnegative numbers x and y (depending on the fixed value z such that x+y = 10-z), such ...

*March 25, 2016*

**STATISTICS PLEASE HELP**

An HR manager at a large agricultural equipment company is considering proposingputting the sales staff on 4 day - 10 hours/day work weeks, instead of their current 5day - 8 hours/day week. It is believed that this will decrease the amount of drivingthey must do during a ...

*March 24, 2016*

**Statistics**

What is the critical value in this question? Assume that we randomly sample 200 residents of Indiana and ask them if they favor having the government issue marriage licenses to same-sex couples. 104 say that the do; 96 don’t. Test at the 5% level whether the population ...

*March 24, 2016*

**math**

How can you find the volume of a rectanglar prism using a model?!!!

*March 23, 2016*

**chemistry**

3NO2(g) + H2O(l) → 2HNO3(l) + NO(g) How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and 2.00 moles of water? Please help,

*March 23, 2016*

**Chem**

How many oxygen atoms are present in 2.00 millimoles of H2SO4?

*March 22, 2016*

**magh**

suppose you put money into teo different bank accounts. In account #1 you deposit $500 and you will be earning 6% interest compounded quarterly. in account #2 you deposit $600 and you will be earning 5% interest compounded annually. Which statement below best describes the ...

*March 21, 2016*

**Chemistry**

When 28g calcium reacts with 25 grams oxygen, how many grams calcium oxide form? I have 2Ca+ 2O2= 4CaO its is not working. Stoichemistry. I have the Ca as the reactant that is limiting? Please help.

*March 20, 2016*

**Accounting**

use the following information to complete the partial worksheet for bills company

*March 17, 2016*

**math **

Find c and I. Choose the right answers. Hint: c = total of payments - amount financed Amount Financed (m) = $3,500 Number of Payments per year (y) = 12 Number of Payments (n) = 36 36 payments of $104.50 each. To the nearest penny, total interest(c) = $ To the nearest tenth, I =

*March 16, 2016*

**Health**

it could be either a or b is it or would it just be a

*March 16, 2016*

**math**

A shirt is on sale for $12.75.this is 15percent off the original price.what was the original price of the shirt?

*March 9, 2016*

**Math**

uh idk

*March 8, 2016*

**English**

I think its D I'm not sure

*March 8, 2016*

**English**

Roosevelt is arguing that journalists must only attack misconduct when they have valid proof. They must not dig just for the sake of digging; it is offensive to good Americans. Which statement most effectively argues against this claim? a) Even sensational journalism is ...

*March 8, 2016*

**math **

In the theory of relativity, the mass of a particle with speed v is m=f(v)=m01−v2/c2√, where m0 is the rest mass of the particle and c is the speed of light in a vacuum. Letting m0=1, find f−1(10). f−1(10)=

*March 8, 2016*

**Math**

A car fits onto a golden rectangle with a length of 12 ft. What is the cars width? Write your answer in simplified radical form and rounded to the nearest tenth of a foot.

*March 7, 2016*

**Statistics**

A bolt manufacturer is using a hypothesis test with α = 0.01 to see if the diameter of their 0.75 cm diameter bolts are being manufactured properly. The goal is to have the average bolt diameter be 0.75 ± 0.0075 cms.

*March 7, 2016*

**Statistics**

Drug clinical trials are analyzed using hypothesis testing methods. As we’ve discussed, the null hypothesis in the effective stage of such trials is that the drug being tested is ineffective. The alternative, of course, is that the drug is effective. Explain why such ...

*March 6, 2016*

**Statistics**

Recall that the power (1 – β) of a hypothesis test is the probability that we will reject the null hypothesis given that it is false; that is, the probability that we will correctly reject the null hypothesis. All other things being equal, which of the following ...

*March 6, 2016*

**College history**

The choice are A.) elementary school B.) Adulthood. C.) high school and D.) College That's why I'm confused I don't know if it's saying when it started or when it was mostly studied

*March 5, 2016*

**College history **

Social order and norms of behavior are often learned in what era or school time? I think it's either college or adulthood

*March 5, 2016*

**History**

A Story that contains little or no policy content and is not related to the days event but that commonly discussed popular personalities and is designed to draw greater viewer interest is what? I think is biased media coverage

*March 5, 2016*

**Science**

How does lustre affect the amount of heat being absorbed by a black can

*March 4, 2016*

**MATH**

The answers don't seem to be correct?

*March 1, 2016*

**MATH**

Suppose f(x)=3x−2. Then f(1) = f(t) = f(x2) = f(f(x)) =

*March 1, 2016*

**math**

25?

*March 1, 2016*

**math**

Let f(x)=6x−1 and g(x)=3−x2. Evaluate the following: 1. f(g(0))

*March 1, 2016*

**English II**

what was the correct one?

*March 1, 2016*

**Math**

A cheese pizza costs $5. Additional toppings cost $1.50 each. Write and graph an equation in two variables that represents the total cost of a pizza.

*February 29, 2016*

**Math 7B**

It was 1. A 2. A

*February 29, 2016*

**Math 7B**

A bag contains 4 white, 3 blue, and 5 red marbles. 1. Find the probability of choosing a blue marble, then a red marble if the marbles are not replaced. a. 5/44 b. 15/35 c. 2/3 (i pick this) 2. 1/15 2. Find the probability of choosing two white marbles in a row. a. 1/11 b. 1/9...

*February 29, 2016*

**Art 6B**

It was D

*February 29, 2016*

**Art 6B**

Ok thank you

*February 29, 2016*

**Art 6B**

For years, community art was created by a professional for the enjoyment or education of a public group. how did the definition change in the nineteenth century? a. community art was now also exibited in museums. b. community art was now also created to spark a revolution. c. ...

*February 29, 2016*

**Music**

What's the scale of the G?

*February 28, 2016*

**chemistry **

what would be observed when combining an aqueous mixture of: potassium carbonate and hydrochloric acid, zinc chloride and silver nitrate, magnesium chloride and sodium hydroxide, ammonium nitrate and sodium hydroxide?

*February 28, 2016*

**chemistry**

1.what are the functions of pH?

*February 28, 2016*

**Biology please assist**

1. Where is pH found? 2.what is the function of pH? 3.what principle guides the phenomenon of pH? 4.what is acid rain ?how is it related to pH values?

*February 27, 2016*

**finance**

A 10-year bond has a coupon rate of 7% annually and a principal payment of $1,000.00. Other similar bonds are paying 9% annually. To determine the value of this bond you must:'

*February 27, 2016*

**Writing**

Why is it hard to write? I've always had trouble with it, I thought that by now I would've gotten better at it, but unfortunately, I'm even worse than before.

*February 26, 2016*

**Writing**

Help, please!!!! I need to write a paragraph How do I write a good one? What types of paragraphs are there?

*February 26, 2016*

**History**

What led to the fall of the Roman Empire in Western Europe, specifically in terms of political instability, economic and social problems, weakening frontiers, and the split of the empire. This is a study guide question. I just need some help figuring out a good response to ...

*February 25, 2016*

**Physics**

The projectile launcher shown below will give the object on the right an inital horizontal speed of 9.40 m/s. While the other object will be dropped with no initial speed. The objects are initially 114 cm above the ground. What will be the difference in the speeds of the two ...

*February 24, 2016*

**English**

Might something as this... A thesis statement: Scientific advances do have an enormousness repercussion which leads humanity to its darkest fears and anxieties.

*February 22, 2016*

**English**

Help, Please! I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein and his creation to a modern zombie story with the focus on how a monster might be used as a metaphor for science or scientific advances and/or ...

*February 22, 2016*

**English**

Okay, but each one of them: 1 Frankenstein 2 Zombie, will have its own body paragraph or not?

*February 22, 2016*

**English**

Help, Please! I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein and his creation to a modern zombie story with the focus on how a monster might be used as a metaphor for science or scientific advances and/or ...

*February 22, 2016*