Monday

July 28, 2014

July 28, 2014

Total # Posts: 1,506

**Math**

84

**Math**

1.d 2.a 3.c 4.b

**science**

I need helping locating information about the environment of Costa Rica so that I can analyze data about the country.

**HSM/270**

Last few weeks of class and struggling to keep up to graduate, can somebody help me if they have done this before, also i used the PEACE Program for my assignments in this Grant Proposal and Writing class. Thanks Identify where the program planning and evaluation process can p...

**english**

Was this answer correct?

**math**

What are the step to help solve for 5r+30/20= 3r-36/3

**math**

How to write the ration as a fraction in lowest terms. Compare in hours. 22 hours to 3 days. The ratio is __.

**math**

The distance between city A and city B is 500 miles. On a certain wall map, this is represented by a length of 2.3 feet. On the map, how many feet would there be between city C and city D, two cities that are actually 800 miles apart? On the map, city C and city D are ___ feet...

**math **

If 5 sweaters cost $39.40, how much would 8 sweaters cost? The cost is $__.

**math**

Write the ratio as a fraction in lowest terms. compare in inches. 3ft to 31 inches. The ratio is__.

**math **

The sum of the measures of the angles of any triangle is 180 degrees. In triangle abc, angles a and b have the same measure, while the measure of angle c is 78 degrees larger than each of a and b. What are the measures of the three angles? angle a is __degrees.

**math **

If planet I is 31.8 million miles from the sun than planet II, then planet III is 25.6 million miles father from the sun than planet I. When the total of the distances for these three planets from the sun is 200.2 million miles, how far away from the sun is planet II? Planet I...

**math**

An electrician cuts a 26ft piece of wire into two pieces. One piece is 4ft longer than the other. How long are the pieces? What is the length of the shorter piece?__ft

**Comunication Skills**

Cultural history.

**Math**

Evaulate each expression: (-1/8)^1/3 Would you make it 3 square root of -1/8? I don't know how to go from there. (256/81)^1/4 Same thing, would it become 4 square root (256/81)?

**Math**

Factor out the common factor: −3x^4 y^2 + 18xy^3 + 9xy^4

**Math**

Factor the trinomial: 2x^2 +11x - 63

**ENGLISH**

yup! all were right! thanks so much!!:)

**ENGLISH**

yup! all were right! thanks so much!!:)

**ENGLISH**

yup! all were right! thanks so much!!:)

**Algebra**

The first two please

**Algebra**

please help me solve my homework with all the work involved. i have trouble paying attention in class so it's hard for me to do my homework. here are a few of the questions. I need to find out what the letters equal. 1.) 10(-4+y)=2y 2.)9(b-4)-7b=5(3b-2) 3.)-(8n-2)=3+10(1-3...

**Math.**

A spinner is divided into 8 equal sections. There are 3 yellow sections and 5 green sections. The spinner is spun 32 times. Which proportion can be used to find the number of times, B, that the spinner could be expected to land on a green section?

**English**

Opps I mean dedicate*

**English**

I am writing a paragraph about why I want to participate in this school counsil thing and I was wobderi if the word choice for "deticate" in this sentence makes sense: I want to deticate myself to participate in more school activities.

**English**

Is this sentence right? I have never had a pet before.

**Svience**

I'm just courious what "ragweed mix" is/are. Is it one type of plant or a bunch?

**history**

the construction of Levitt Towns

**stats 101**

how do you find the lower class limit,upper class limit, class width, class midpoint, and class boundaries from a set of frequencies data

**phisics**

Two positive charges, each of magnitude 2 10-6 C, are located a distance of 17 cm from each other. (a) What is the magnitude of the force exerted on each charge?

**health and diseases**

Im not sure how to do it? I need suggestions

**health and diseases **

I need help on doing a powerpoint presentation about trichomoniasis

**Chemistry**

I am stuck on this question: what mass of KCl in grams when 2.00 lbs KC10 3 is decomposed?

**anth**

why is anthropology necessary in a career/life?

**abnornal psych**

so what are the necessary reason for and aganist establishing a specific disorder related to suicide?

**abnornal psych**

should suicide be added to the DSM IV- TR and what are the reason for and aganist establishing a specific disorder related to suicide?

**Math**

If y is directly proportional to x and inversely proportional to z^2, by what value is y multiplied if x is doubled and z is multiplied by 3

**physics**

You have a mass of 71 kg and are on a 51-degree slope hanging on to a cord with a breaking strength of 165 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire? In the previous problem if the...

**College physics**

A skier traveling at 30.9 m/s encounters a 21.5 degree slope. If you could ignore friction, to the nearest meter, how far up the hill does he go?

**Physics**

I'm still a little confused. When I use the equation: W = k(x2^2 - x1^2)/2, I get 0.0216 J. This doesn't seem correct.

**Physics**

A spring with k = 54 N/cm is initially stretched 1 cm from its equilibrium length. (a) How much more energy is needed to further stretch the spring to 2 cm beyond its equilibrium length? (b) From this new position, how much energy is needed to compress the spring to 2 cm short...

**Chemistry**

Calculate the final pressure on the addition of 2.0 g He(g) to a vessel of 10.0 L fixed volume already containing O2(g) at 25°C and 740 mm Hg

**Learning through Play**

One of the parents in your school says, “I really enjoyed coming to Parents’ Night last week and seeing all the things the children are doing. I was particularly interested in your comments about the materials which enhance cognitive abilities. Why is it so much bett...

**Calc- Trig Substitution **

integral of dx/square root(x^2-64) My answer is: ln (x/8 + square root(x^2-64)/8) +c is this right?

**physics**

A model of a helicopter rotor has four blades, each 3.40 {m} in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 580 {rev/min}. What is the radial acceleration of the blade tip, expressed as a multiple of the acceleration g due to...

**chemistry **

how many times a proton is heavier than an electron

**Math**

Write an addition problem in which, when the addends are rounded to the nearest ten, the sum is 90. Then explain how you use estimation to solve the problem.

**physics**

A skydiver jumps out of a hovering helicopter, so there is no forward velocity. Use this information to answer questions 1 to 9. Ignore wind resistance for this exercise. What is the skydiver's acceleration?

**functions 12**

after i solve for x then that is my answer? so x=1/3,-1

**functions 12**

so would it be (3sinx-1)(4sinx+4)=0?

**functions 12**

solve 12cos^2X=8+13sinX between the window of -360 ¡Ü x ¡Ü 360

**chemistry**

Why are hydrogen ions NEVER found in an aqueous solution?

**geometry**

the top of a giant slide is 30 ft off the ground. the slide rises at a 30 degree angle. to the nearst whole foot, what is the distance down the slide?

**Science**

I have a few questions if someone could please help with them: Which of the following is true: A.Relative dating tells us how long ago something existed B.Disconformities are less common but usually far more conspicuous because the strata on either side are essentially C.Estim...

**Chemistry**

A solution of .12 mol/L of phosphoric acid completely neutralizes .20L of a solution of sodium hydroxide with.a concentration of .15mol/L What is the neutralizing volume of the phosphoric acid?

**ethics **

I am doing a presentation on biomedical issues- abortion. My part is what issues involve problems with consent. Can you help please

**Earth Science**

Which of the following is true: -Relative dating tells us how long ago something existed -Disconformities are less common but usually far more conspicuous because the strata on either side are essentially -Estimates indicate that the North American continent is being lowered a...

**Maths lit,geography,life science,pysical science**

Help us plz

**Chemistry**

Are these right? I didnt know some of them. 1. AgNO3 Soluble, rule 3 2. Ag2SO4 Insoluble, rule 4 3. HgCl2 Insoluble, rule 2 4. BaSO4 Insoluble, rule 4 5. CaCl2 Soluble, rule 2 6. NH4OH ? 7. PbCl4 Insoluble, rule 2 8. Mg(C2H3O2)2 Soluble, rule 3 9. HgCl Soluble, rule 2 10. CaF2...

**Chemistry**

how do you determine the solubility of the following salts: 1. AgNO3 2. Ag2SO4 3. HgCl2 4. BaSO4 5. CaCl2 6. NH4OH 7. PbCl4 8. Mg(C2H3O2)2 9. HgCl 10. CaF2 11. CuO 12. AgI 13. Al(OH)3 14. Fe2(CO3)3 15. CrPO4 16. K2S

**Chemistry**

what are the rules used to determine the solubility of salt?

**Honors Chemistry**

1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+] concentration of 1 X 10^ -12...

**Shurley English**

What are Single Quotes and when do you use them?

**Phsyics **

A cannonball is fired into the air with a speed of 42 m/s from a height of 28 m, with what speed does the cannonball hit the ground?

**physics**

An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ove...

**Science**

The object distance for a convex lens is 15.0 cm, and the image distance is 5.0 cm. The height of the object is 9.0 cm. What is the height of the image?

**Math**

a.16 inches by 16 inches b.15 inches by 15 inches c.19 inches by 19 inches d.17 inches by 17 inches

**Math**

Janna is creating a multi-tiered cupcake display for a party. She plans on having 16 cupcakes on each tier. -There is a 1-inch space between all cupcakes. -The cupcakes have a uniform width [diameter] of 3 inches. -Each tier will display the cupcakes in either 2 rows of 8, or ...

**physics ! HELP PLEASE !!!!1**

what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?

**physcis ! HELP !!!! **

which of collowing situations describe a particle that might have a non-zero velocity? canbe more than one A) a particle that has a constant position as a function of time B) a particle that has its position changing as a fnction of time c)when you graph the particle's acc...

**physics**

which of collowing situations describe a particle that might have a non-zero velocity? canbe more than one A) a particle that has a constant position as a function of time B) a particle that has its position changing as a fnction of time c)when you graph the particle's acc...

**physics**

what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?

**algebra**

Using the formula for BMI: B = 703(w)/ h² When the weight is 100 lbs and the BMI is 20, how do I figure out the persons height?

**physics**

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the...

**physics**

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the...

**physics**

i got answers to some of the questions Q1: 3.3 mins Q2: ?km <- still need help with Q3:23.3 Q4:?km still need help with

**physics**

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the...

**Science**

Identify 5 different materials that you encounter or use on a daily basis, and identify a mineral that is mined to supply each of those materials.

**Math**

Thank you for the help :)

**Math**

The Longhorns punted the ball from the 5-yard line. The punt was caught at the 41-yard line and returned to the 19-yard line. The ball did not cross the 50-yard line. What was the net yardage on the play?

**Physics Help!!!**

its wrong :/

**Physics Help!!!**

One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string? F= ? Hz i understood ...

**Physics Help!!!**

One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string? F= ? Hz i understood ...

**physics **

Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other ...

**math**

A cylinder shaped sculpture is 24 meters high with a diameter of 6.8 meters. An artist plans to spray paint the entire surface with silver paint. If 1 can of spray paint covers 50 square meters, how many cans does the artist need to paint the sculpture?

**Chemistry III**

I'm sorry thank you so much for all your help but I seem to be getting the wrong answer for part c and I don't understand how to get the individual ion's moles for part b. I have the correct volume of 0.00197L. For part c I am doing as you say and I get a pOH of 5....

**Chemistry III**

Assume you dissolve 0.240 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.16 102 mL of solution and then titrate the solution with 0.153 M NaOH. C6H5CO2H(aq) + OH -(aq) C6H5CO2-(aq) + H2O(l) (a) What was the pH of the original benzoic acid solution? (b) Wh...

**Chemistry II**

You place 1.234 g of solid Ca(OH)2 in 1.00 L of pure water at 25°C and it partially dissolves. The pH of the solution is 12.40. Estimate the Ksp for Ca(OH)2.

**Chemistry **

A 20.2 mL sample of a weak monoprotic acid, HX, requires 50.0 mL of 0.060 M NaOH to reach the equivalence point. After the addition of 30.0 mL of NaOH, the pH is 5.50. What is the Ka of HX?

**arithmetic**

The pet shop owner told jean to fill the new fish tank 3/4 full of water.Jean filled the tank 9/12 full.What fraction of the tank does she still need to fill?

**statistics**

A student is interested in whether students who study with music playing devote as much attention to their studies as do students who study under quiet conditions (he believes that studying under quiet conditions leads to better attention). he randomly assigns participants to ...

**CHEMISTRY HELP NEEDED!!**

Given info: Reaction: 3A+2B--->2C+D {A] (mol/L) 1.0 ×10^-2 1.0 ×10^−2 2.0 ×10^−2 2.0 ×10^−2 3.0 ×10^−2 [B] (mol/L) 1.0 3.0 3.0 1.0 3.0 Rate of appearance of C (mol/L-hr) 0.30×10^−6 8.10×10^−6 3.2...

**Chemistry**

Given info: A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×10^−6 3.0 ×10...

**Chemistry**

calculate the specific rate constant between substances A and B has been found to given data 3A + 2B ---> 2C + D

**Chemistry**

calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×...

**Chemistry**

calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×...

**Chemistry**

collect the specific rate constant....

**Chemistry**

calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×...

**Chemistry**

calculate the specific rate constant A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0 8.10×10^−6 2.0 ×10^−2 3.0 3.24×10^−5 2.0 ×10^−2 1.0 1.20×...

**Chemistry**

How would you analyze a solution known to contain Hg22+ and Cu2+?

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