# Posts by dora

Total # Posts: 77

**Calc**

Find dy/dx by implicit differentiation and simplify the result 1. x=sec(1/y) 2. 4xy+ln(x^2y)=7 Hello I sort of know how to do these problems but not really. :( Can someone show all the work to solving them it would help me greatly. Thank you a lot.

**Math**

An exercise book costs $0.9 and a pencil cost $0.6. What is the total cost of buying: 2 exercise books and y pencils in terms of Y?

**chemistry**

write down the chemical formular for the following compounds 1.Sodium flouride 2.Berillium chloride 3.Pottasium iodide 4.Rubidium bromide 5.Magnesium sulphide

**accounting**

6.7

**Science**

The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown sugar 1 teaspoon ...

**Intermediate Algebra**

If a 9-foot tall adult elephant casts an 18-foot shadow, how long is the shadow of the 6-foot zookeeper? Use a proportion to set up and solve an equation. Round your answer to the nearest tenth of a foot if necessary.

**critical thinking**

How are the problems in crime, housing and health interrelated?

**averag**

Over the course of 6 days. Rachel walked 5.75 miles ,6 miles, 4.74 miles , 3.5 miles , 5 miles ,and 7 miles. What was the average distance she traveled each day?

**chemistry**

what the balance equation for solid carbon

**Chemistry**

The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown sugar 1 teaspoon ...

**statistics**

In 2006, 75.9% of first-year students said they used the Internet for research or homework. Administrators found that 168 of an SRS of 200 first-year students used the Internet for research or homework. Is the proportion of first-year students who used the Internet for ...

**math**

455f52

**social, political,**

As a policy maker, how can sustainability be achieved

**Law**

where can I find information on Issues in Supervision and Consultation?

**Law**

Where can I find info on Professional Competence and Training in counseling?

**math**

I am having difficulty with statistics..I am taking stats 4, but haven't taken 3 yet. Explain deviation below or above the means please. ex. If bill received a NCE score deviation below the mean, what would his score be? which is 10. Can you explain the standard deviation ...

**american gov't**

What are some positive consequences of having interest groups? Negative?

**politics**

There are various levels and types of judicial courts. In the case Sitz v. Michigan Department of Police, two levels of government and court systems interact to come to a final verdict. What was the final verdict and how did it reach that conclusion? (Explain the process.)

**government**

why should federal courts be able to declare an act of Congress unconstitutional

**government**

There is much debate in our country about activist judges and strict constructionist judges. Do you believe that judges should be limited to interpreting what the constitution and federal laws say?

**government**

Why would bureaucrats become more concerned that elaborate procedures are followed, as opposed to achieving certain substantive outcomes? What political relationships cause this result?

**just a question**

Can efforts to reinvent government solve the problems associated with bureaucracies? Why or why not?

**govt**

what do they mean by highly specialized committee structure

**government**

In gov't what does ommittee reforms that have taken power away from chairs represent?

**american government**

ok thank you

**american government**

I don't understand what they are asking

**american government**

Consider the following features of Congress (including some that no longer apply), and discuss the policy implications of each. Does they (a) lead to more or less logical and coherent policies? (b) lead to more or less representation of various local and parochial interests? (...

**AP (Honors) World History**

I need a good thesis statement for my continuity and change over time informative essay on Hinduism, but I don't know how to even start. Please help.

**Statistics**

It shows there has been a response to my question but I don't see one that in my opinion addresses my question.

**Statistics**

A math professor notices that scores from a recent exam are normally distributed with a mean of 64 and a standard deviation of 5. Answer the following questions using integer values. The professor decides to grade on a curve. If he wants 0.15% of the students to get an A, what...

**statistics**

A math professor notices that scores from a recent exam are normally distributed with a mean of 64 and a standard deviation of 5. Answer the following questions using integer values. What score do 75% of the students exam scores fall below? And, how was this answer calculated?

**Math**

How can you write a variable expression for the area of the walkway

**finance**

The Blinkelman Corporation has just announced that it plans to introduce a new solar panel that will greatly reduce the cost of solar energy. As a result, analys now expect the company’s earnings, currently (year 0) $1 per share to grow by 50 percent per year for the next...

**Finance**

Sports Novelties, Inc., has experienced an explosion in demand for its feathered football novelties. The firm currently (time 0) pays a dividend of $0.25 per share. This dividend is expected to increase to $0.75 per share 1 year from now. It is expected to grow at a rate of 15...

**Finance**

Zabberer Corporation bonds pay a coupon rate of interest of 12 percent annually and have a maturity value of $1000. The bonds are scheduled to mature at the end of 14 years. The company has the option to call the bonds in 8 years at the premium of 12 percent above the maturity...

**physics**

Search: A block of steel (7900 kg/m3) is suspended from a spring scale. The scale is in newtons.What is the scale reading if the block is in air?What is the scale reading after the block has been lowered into a beaker of oil (900 kg/m3) and is completely submerged?

**Math**

My worksheet title reads "Modeling 3-Digit Addition Practice" and then it has the problem 186+245 and then it has a table with four colummns and 3 rows the first column title reads "Base-Ten Drawings" the second one reads "Record the Problem" and ...

**Math**

3,because if you divid 6 and 18 it gives you 3

**Math; Pre -algebra**

How many 3 letter arrangements can you make while making the first and the third letter one of the 21 constants and the middle letter one of the 5 vowels {a,e,i,o,u} . {two such arrangments to use are KOM and XAX?

**algebra**

-72 / (-92) rewrite the division as a multiplication

**algebra**

-x/5 = 1/16 solve using the multiplication principle

**algebra**

150/-15 divide if possible

**Algebra**

In a triangle ABC, angle B is three times angle A and angle C is 5 degrees less than 6 times angle A. Find the size of the angles.

**Algebra**

Collect like terms 18r^2 + 7s + 4r^2

**Algebra**

what is the equivalent expression of 94 + xy

**Math**

What is the total price of $3.25,$1.10 including 7% tax

**social studies**

the nile river flows into what body of water

**psychology**

hi can you please help me with the following 1) performance goals 2) mastery goals 3) the effect of praise 4) Expectations and self-efficacy i need the websites where i can get information from. please help me thanks

**Chemistry**

What is the empirical formula of the oxide in Magnesium Oxide? The number of moles of Mg = 8.026 x 10^-8. The number of moles of O = 1.605 x 10^-7.

**physics- pls help me**

1. The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration -5.20 m/s2 for 4.45 s, making straight skid marks 62.5 m long ending at the tree. With what speed does the car then strike the tree? 2. A jet plane lands...

**math**

By selling a piece of land for $700 a man made a loss of 20%.How much did he buy the land

**calculus**

evaluate the following integrals by any means possible: b. integral from -1 to 1 (w/ (w^2+1)) (dw) c. integral from -3 to 0 sqrt(9-x^2)dx

**trigo**

calculate the amount of each annuity of the last deposit.A deposit of $450 at the end of each month period of 5 years at 6.5% compounded semi annually.If you don't have my email how i am going to recerive the answer?

**trigo**

calculate the amount of each annuity of the last deposit.A deposit of $450 at the end of each month period of 5 years at 6.5% compounded semi annually.

**English**

In Romeo and Juliet, How does Capulet feel about young marriages?

**gen**

do you think this is nonagist our new district attorney is making a speech on saturday.

**Romeo and Juliet Help Quick Question**

He gives her a potion, we know this because he has a specialty in herbs and plants and in his previous soliloquy he tells us he knows what plants can stop the heart and such. Also, in act 5 - scene 3 line 244 he says he gave her a sleeping potion. :)

**9th grade**

You distribute the first set of brackets. When you have equations like this you should pretend there are no brackets around the first equation. b-6 (b+3) first you distribute b into the brackets. (b)(b) = b^2 then b to 3 (b)(3) = 3b then you distribute the -6 to both... (-6)(b...

**Organic Chemistry**

Some biphenyl ( C6H5----C6C5) is produced as a by-product in the synthesis of benzoic acid . Where does this come from?

**O chemistry**

1. Predict the relative rates for the reaction of butadiene and a. ethene, b. methyl propenoate, c. and maleic acid 2. what product is expected from the reaction of fumaric acid (trans-2-butenedioic acid) with 1,3-butadiene.

**O-Chem**

A student wished to prepare ethylene gas by dehydration of ethanol at 140 C using sulfuric acid as the dehydrating agent. A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be changed to give ethylene? I know that ...

**Organic Chemistry- help Dr. Bob**

alright thank you so much for your help!

**Organic Chemistry- help Dr. Bob**

1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed? Responses...

**O CHEM - dr. bob**

1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed? Responses...

**O Chem**

1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed?

**ochem**

Why is that that a third order alkyl halide reacts faster in SN1 mechanism? Why is it the opposite for SN2? (is it just steric hindrance? )

**Organic Chemistry**

2. Why doesn’t the neutral organic compound (Flourene) dissolve in 1.5 M sodium hydroxide solution?

**Organic Chemistry**

1. Why is diethyl ether a good choice for an organic solvent? 2. Why doesn’t the neutral organic compound dissolve in 1.5 M sodium hydroxide solution?

**entrepreneurship**

You just received an email from your high school friend, Bill Hudson. You went to college, and then business school, while Bill stayed in your home town. Despite the differences in your paths, you are still very good friends. Bill is considering a life-changing opportunity and...

**Chemistry -- to Dr.Bob**

thank you very much Dr. Bob

**Chemistry -- to Dr.Bob**

I had posted a while back and still couldn't solve this is there anyway you could show me the steps on how u did this? thank you very much A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0.867gmL with 150.0 mL of benzene C6H6d=0.874gmL. Assuming that the volumes ...

**chemistry**

i still got it wrong 0.867 g/mol= x/ 20 ml x= 17.94 g 0.874 g/mol= x/ 150 mil x= 131.1 g toluene 17.904 g x 1 m/ 92.14 g/ mol= .194 m benzee 131.1 g x 1m/78.1121 g/mol = 1.68 m .194 m Toluene/ .1311 kg = 1.48

**chemistry**

A solution is made by mixing 20.0 mL of toluene C6H5CH3d=0.867gmL with 150.0 mL of benzene C6H6d=0.874gmL. Assuming that the volumes add upon mixing, what are the molarity (M) and molality (m) of the toluene

**physcial science**

As water freezes, its temperature does what? a) increase b) decrease c) first increase, then decrease d) does not change The temperature of freezing water is 0o C. The temperature of the water will remain at zero C until all of the water has frozen; therefore, the answer to ...

**Physical Science**

What is the advantage of using the Celsius scale over the Fahrenheit scale? The Celsius scale, being metric, makes more sense than using the Fahrenheit scale. Check this site for more information. http://en.wikipedia.org/wiki/Moral_hazard

**English**

Can you help me unscramble these words; dramalanse,ubrocai,planotee,evebra, chorits. they are animal names.Please help!!! thanks Try these: http://www.ssynth.co.uk/~gay/anagram.html http://wordsmith.org/anagram/ http://www.unscramble.net =) unscramble to spell an animal ...

**social studies**

is arizona closer to the equator or to north pole? What is the latitude? If it is greater than 45 degrees N, it is closer to the NPole. http://www.netstate.com/states/geography/az_geography.htm Yes it is.