Saturday

April 19, 2014

April 19, 2014

Total # Posts: 124

**Calculus**

Can you tell me if im doing this right? Find the volume of the region obtained by revolving the area below about the line x=3. y=x3, x=2, y=0 v=pi[2,0] (x^3)^3dx= pi[2,0] x^9 v=pi/10 x^10(2,0)= 1024/10 pi

**Calculus**

Can someone help me with finding the derivative of this function? y = -( csc x)2 (cos-1(1-x2))

**ASCC**

a car moving at 25m/s undergoes an acceleration of -2.3m/s. calculate a) the time needed to stop this car and b) the distance the car will travel before stopping.

**Algebra**

Thank you so much!

**Algebra**

Mr. Bailey mowed his yard in 90 minutes. His son Roy mows the yard in 75 minutes. How long will it take them if they work together (using 2 lawn mowers)? How to set up an equation? Thank you.

**basic algebra**

Thank you very much for all your great help! Once again, thank.

**Algebra**

Thank you.

**Algebra**

Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?

**physics**

what is the mass of a vehicle traveling at 25 km/hr with a kinetic energy equal to 1 x 10 to the 4th power J?

**mental health counseling**

Authentic and performance assessments strive for greater realism and complexity of tasks under the premise that real-life problems can often be solved ______________.

**math**

Lane French had a bad credit rating and went to a local cash center. He took out a $100 loan payable in two weeks at $115.

**chemistry**

You dissolved 450.0 g of sugar (C12H22O11) in 150 mL of water. The density of water is 1.00 g/mL a. calculate the molarity of the solution b. calculate the molality of the solution

**CHEMISTRY**

In my lab report, I am asked to "Find the solubility of Ca(OH)2 in H2O as the temperature increases. Explain (in terms of energy) the reasons for this trend." From what I have found, Ca(OH)2's solubility goes down, but I have no idea why! It isn't a gas... it...

**Chemistry (URGENT)**

Oh my gosh, thank you SO MUCH Dr. Bob! You are a life saver.

**Chemistry (URGENT)**

Hello! Does anyone know where to find the solubility of Ca(OH)2 in water as temperature changes? I need this information to answer the discussion in a lab report.

**ap history**

to what extent did populists continue to focus on grievances of earlier movements?

**life orientation**

provide recommendations on how to address substance abuse

**Math**

19. A family takes a car trip. They travel for an hour at 80 km/h and then for 2 hours at 40 km/h. Find the average speed. (Hint, Remember to consider the total distance and the total amount of time.)

**calculus**

Suppose that x=x(t) and y=y(t) are both functions of t. If x^2+y^2=26 and dx/dt=−2 when x=1 and y=5, what is dy/dt? help??????

**Math**

x+(x+2)+(x+4)=39 because the first side is x, the next side has to be 2 more than x, and the third 4 more than x 3x+6=39 take it from here

**Math**

x is measure of one angle 2x-21 is measure of other x+2x-21=90 3x-21=90 3x=111 you go from here

**Math**

There might be an easier way but here how I did it. 4x(.05)+.10x=2.40 .2x+.10x=2.40 .3x=2.40 divide both sides by .3 x=8 so ther are 8 dimes and 32 nickels

**math**

show 7 two different ways

**Mathvo -**

i think it means xi less then or equal to -2

**Mathv**

4. Graph the inequality: x ≤ –2 (1 point)

**Division of Fractions**

18 divided over 3/5 =18 x 5/3

**calculus**

Compute each of the following limits if they exist. lim 3x^(2)-x-2 x->2 lim (x^(2)+x-6)/(x-2) x->2

**educational research**

I so overwhelm and lost at the moment. Summarize and complete an annotated bibliography of at least ten (10) scholarly sources that pertain to your research topic. This annotated bibliography should be a minimum of five pages in length, excluding title and reference pages. Cre...

**Economics**

A B

**chemistry**

7629899.9kl By bad

**chemistry**

7329899.9kl

**Chemistry**

A buffer system contains 0.25M NH4+ and 0.19M NH3. pka of NH4 is 9.25. How many moles of NaOH must be added to 1.00L of this solution to increase the pH to 9.25?

**financial management**

show me how to calculate current ratios, long-term solvency ratios, contribution ratios

**financial management**

show me how to work a forecast personnel expenses & total revenues using weighted moving averages & moving averages using 3 fiscal years

**physics**

Supertank has engine exerting a 75x10 cube N, Force against water drag at 40x10cubeN, Calculate tensions in tugs cable, Supertank is 1piont5x10eight kg 30 degrees vertical pull, Acceleration 2x10negative3 m/s?

**science**

How plant and animal life dependent on the water cycle?

**Math prediction**

how to add the following -94+(-19)

**finding math**

find the decimal notation for the fracton 3/10

**Learning Math**

why is it when 9x+x= 10x are we adding the x? Please help me to understand

**Learning Math**

Please solve 9x+x

**science**

4

**physical**

. On Earth the Mars rover had a weight of 9800 N. What will be its weight on mars where the acceleration due to gravity is 4 m/s

**Math**

Aluminum hydroxide suspension 15 mL is ordered four times per day. The pharmacy sends a bottle labeled 320 mg/5mL. How many milligrams will the patient receive per day?

**May**

Aluminum hydroxide suspension 15 mL is ordered four times per day. The pharmacy sends a bottle labeled 320 mg/5mL. How many milligrams will the patient receive per day?

**algebra**

Solve, 0.7x+4 is equal to or less than 1.1x-7 Simplify your answer. Type and inequality symbol; then type an integer or a decimal. The solution is {x x ___ ____}

**Physics 2**

Suppose, in the figure below, a 0.90-m rod experiences a 1.2-T magnetic field and the hand keeps it moving to the right at a constant speed of 3.5 m/s. If the current in the circuit is 0.040 A, what is the average power being delivered to the circuit by the hand?

**Chemistry**

A copper coil is placed in a solution of silver nitrate, the reaction proceeds and in time silver crystals form and the colution of copper nitrate is produced. What is the complete raction .

**Math**

it takes 5 hr for 8 cooks to prepare the food for a wedding rehersal dinner how long will it take 9 cooks?

**PAP Chemistry **

Net Ionic Equation of : NaOH(aq) + CaBr2(aq)

**math**

solve and show how it explained 5n+10+1-3n

**math**

show how to explain answer to p-8p

**Math**

A stick 80 centimeters long makes a shadow that is 50 centimeters long. At the same time of the day, the shadow of the tower is 25 meters long. How high is the tower?

**Physics**

A wire 3.00 m long and .450 mm2 in cross-sectional area has a resistance of 41.0Ω at 20 degrees C. If its resistance increases to 41.4Ω at 29.0 C, what is the temperature coefficient of resistivity?

**math**

bayside insurance offers two health plans. under plan A, giselle would have to pay the first 160 of her medical bills, plus 25% of the rest. under plan B, giselle would have to pay the first 180, but only 20% of the rest. for what amount of medical bills will plan B save gisel...

**Biology**

Thank You :)

**Biology**

If a heterozygote is crossed with a recessive individual, what % of their offspring will be recessive (have light hair)?

**physics**

On Earth the Mars rover had a weight of 9800 N. What will be its weight on mars where the acceleration due to gravity is 4 m/s 2 ?

**Algebra**

I am great at math but for some reason can not wrap my brain around Algebra for the world! Please Help!! Im stumped! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x – 5y = 61 7x – 5...

**algebra**

A dehydrated patient needs a 2.6% saline IV. Unfortunately, the hospital only has bags of 8% and 2% saline solutions. How many liters of each of these solutions should be mixed together to yield 2 liters of the desired concentration?

**CHEMISTRY**

1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution? 2)A Certain brand of iron supplement contains FeSO4-7H2O with miscellaneous binders and fillers. Suppose 22.93 mL of the KMn04 solution used in q...

**Science**

What are two potential hazards with oil use?

**Math**

What do you think?

**Algebra, explain how to please**

Can someone explain to me how to solve -14=2/5(9-2b) It would be greatly appreciated thank you

**Algebra**

How would I solve -32=8/7(3w-1) I have no clue.. ._. These problems stress me out

**Algebra**

Where did the four come from?

**Algebra**

How would I solve: 1/3(D+3)=5 I know you need to find the recipicile, but I have no idea how to solve this.

**Chemistry**

A solution contains the following ions: Hg2(2+) and Fe(2+). When potassium chloride is added to the solution, a precipitate forms. The precipitate is filtered off and potassium sulfate is added to the remaining solution, producing no precipitate. When potassium carbonate is ad...

**Math**

Input, 0,1,2,3 output: 5,7,15,44 What is the Domain and What is the Range? How would I figure this out? Can anyone explain on how they found them?

**Math**

Explain how you would use a number line to round 148 to the nearest ten.

**Algebra 1**

thanks so much!!

**Algebra 1**

Multiply (5sqrt5-10sqrt 6)* (3sqrt5+6sqrt6)

**Algebra 1**

subtract (8 sqrt 125) - (7 sqrt 5)=

**Math**

3) Explain how the laws of exponents work with rational exponents and give at least one example of an expression containing rational exponents... Please help.. I can't find the answer to this anywhere..

**Math**

okay so the answer i came up with is 4m^20 Is that right? Thanks so much for your help.

**Math**

ohh sorry it is (2m)^16 why are you using n?

**Math**

(2m)^4 * (2m)16

**chemistry (WEBWORK)**

thanks its right

**chemistry (WEBWORK)**

thanks its right

**chemistry (WEBWORK)**

Use the labels (CV+, –OH, CVOH, , Ea (activation energy), & G) to complete the reaction potential energy profile below. More than one answer is possible for some spots. a. (Use i, ii, iv, etc. for your answer) b. (Use i, ii, iv, etc. for your answer) c. (Use i, ii, iv, et...

**CHEMISTRY (WEBWORK)**

SPARTAN: Use the information from question #1 to answer the following. A. Which two orbitals from CV+ and –OH will overlap creating the C-O bond in CVOH? ______ (Use i, ii, iv, etc. for your answer) B. Which of the following accurately shows the orbital interaction that l...

**chemistry**

a, b, b, a

**algebra**

find the domain of the function g(x) = 4 ______ 6 - 7x

**FINANCE**

Life for Kids Company, a small producer of plastic swimming toys, wants to determine the most it should pay to purchase a particular ordinary annuity. The annuity consists of cash flows of $700 at the end of each year for 5 years. The firm requires the annuity to provide a min...

**Physics**

I've tried that, but the program I'm using still says that that is incorrect.

**Physics**

A rifle has a mass of 4.73 kg and it fires a bullet of mass 13.6 g at a muzzle speed of 829 m/s. What is the recoil speed of the rifle as the bullet leaves the gun barrel? So far, I've got (using p for momentum) p=p, so massXchange in velocity of the bullet will will equal...

**algebra**

-1x2-4x+12=0

**latin**

Cras , vos quod vestri sanctimonialis mos have lost severus orsa of juvenis. Is what I think it is, but it'd be better if you checked your resourced to make sure.

**ECONOMICS**

I hear ya! Thanks.

**Economics**

Okay, Any response on my question?

**ECONOMICS**

ARE THE 3 BASIC CHARACTERISTICS OF THE ECONOMIC PERSPECTIVE SUPPLY, DEMAND AND EQUILIBRIUM OR PRICES, INCOMES, AND QUANITITIES. I BELIEVE THEY ARE SUPPLY, DEMAND AND EQUILIBRIUM, BUT NOT SURE.

**Statistics**

Suppose that the number of customers who enter a supermarket each hour is normally distributed with a mean of 540 and a standard deviation of 150. The supermarket is open 14 hours per day. What is the probability that the total number of customers who enter the supermarket in ...

**Chemistry- test for presence of sulphate**

I have a solution of Fe2(SO4)3, i.e. iron(III) sulphate solution. To test for the presence of the sulphate anion, nitric acid & barium nitrate were added. A white precipitate was obtained. Please help to check if the following equation is correct for the above reaction? Fe2(SO...

**reading**

can you help me to unscramble these words. 1. rglsentri 2. rgntae

**Research Project on Computer Confidentiality**

Use Opinion 5.07 to answer question (introductory sentence)then think about the consequences of what could happen if date and time were stamped improperly, if records were purged and patient didn't know it, what is encryption and is it 100% secure (no, nothing really is), ...

**6th grade**

the 1 = 5 so 5x1 + 3 thats how many fifths there are

**english-character sketch**

how are character sketches supposed to go? i think i am doing this wrong

**college-economics**

The gross national debt initially is equal to $3 trillion and the federal government then runs a deficit of $300 billion: total 5 questions. Confused, believe gross debt = all fed govt debt What is the new level of gross national debt? If 100 percent of the deficit is financed...

**Science/ECology**

What is a terrestrial ecosystem? And what are 2 examples of terrestrial ecosystem?

**Science/ECology**

What are the roles of consumers in a food web?

**English**

I' m wondering how I can re-phrase the sentence 'They're getting even less energy'.