Saturday
April 30, 2016

Posts by alex

Total # Posts: 3,414

Spanish
An elementary bilingual teacher asks you to come to her class to talk to her students about how you used to celebrate the holidays with your family. First you want your Spanish teacher to hear what you plan to say. Be sure to include where you used to celebrate most family ...
November 6, 2015

Calculus
Test for convergence: (n+5)/((n^7+n^2)^(1/3)) from 1 to inf. I cannot figure out which test to use. any help would be great!
November 6, 2015

maths
a lighthouse flashes 3 seconds the second 4 and the third 5 seconds they flash initially al together when will they flash again together
November 4, 2015

math
most characters at disney world have a height requirement between 4ft and 6ft. find the percetage of women metting the requirement if M= 63.8 in and q = 2.4 in
November 3, 2015

math
to win the lotto you must choose six different numbers from 1 to 44 to match the same numbers drawn. the order of the numbers does not matter. what is the probability of winning
November 3, 2015

Math
What is the unit rate in 10 gallons in 2
November 3, 2015

math
How can knowing the multiplication properties help You multiply 5x(2x6)?
November 2, 2015

Phyics
A pool ball leaves a 0.75-meter high table with an initial horizontal velocity of 30 m/s. Predict the time required for the pool ball to fall to the ground.
November 2, 2015

Math
The equilateral triangle with 4 cm side is decreasing infinitely by 1/2. Determine the area of the triangles.
October 30, 2015

Physics
kd^2/(2mg(sinθ+μcosθ))
October 30, 2015

Science
Do you go to Connections?
October 29, 2015

history
Hey Reed, are you tutor?
October 29, 2015

Trigonometry
Determine the general solution of Sin2x=4cos2x thanks in advance
October 26, 2015

Chemistry
1. A typical bathtub can hold 102 gallons of water. Calculate the mass of natural gas that would need to be burned to heat the water for a tub of this size from 63 ◦F to 98 ◦F. Assume that the natural gas is pure methane (CH4) and that the products of combustion ...
October 25, 2015

Spanish
Your teacher has to decide who will share hotel rooms during your class trip to Mexico. What could you say about your morning routine so that your teacher can choose your roommate? Give as many details as possible so that he or she can determine if you are really compatible ...
October 23, 2015

Spanish
An elementary bilingual teacher asks you to come to her class to talk to her students about how you used to celebrate the holidays with your family. First you want your Spanish teacher to hear what you plan to say. Be sure to include where you used to celebrate most family ...
October 23, 2015

Spanish
thank you so much!
October 23, 2015

Spanish
Read the description of Ana’s eighth birthday celebration. Write bien or mal to describe how the guest behaved. Then write a sentence that supports your answer. ¿Cómo se portaba Susana? ¿Por qué crees eso? 1. Todos los niños le regalaron...
October 23, 2015

Spanish
While flipping through a magazine, Susi sees an article listing tips for driving safely. Write the numbers of 2 suggestions from the list that should NOT appear in the article. Los principales consejos para manejar 1. Para completamente en la señal de parada. 2. Maneja ...
October 23, 2015

Spanish
Thank you Patrick!
October 23, 2015

Spanish
Answer the following question. Follow the model. Modelo ¿Cuánto tiempo hace que no vas al cine? Hace tres meses que no voy al cine. ¿Cuánto tiempo hace que Uds. saben navegar en la Red? ????
October 23, 2015

Spanish
the given model example was sacar un libro de la biblioteca and the answer was Lo saqué. The problem is asking me to take echar una carta and I'm supposed to correctly write a sentence that Margarita has accomplished this task.
October 23, 2015

Spanish
Write the sentences Margarita would say to indicate that she has completed the errand specified in the prompt. Use the appropriate direct object pronouns (lo, los, la, las). Modelo sacar un libro de la biblioteca Lo saqué. echar una carta ????
October 23, 2015

spanish
thank you!
October 23, 2015

spanish
Eugenio is talking about what he used to do when he was a child. Write the appropriate vocabulary word or words in Spanish that match the meanings of the underlined words. Cuando era pequeño tenía muchos juguetes. Cuando era pequeño: _______ what other ...
October 23, 2015

Physics
A 4.36 kg block free to move on a horizontal, frictionless surface is attached to one end of a light horizontal spring. The other end of the spring is fixed. The spring is compressed 0.144 m from equilibrium and is then released. The speed of the block is 1.18 m/s when it ...
October 22, 2015

Chem
2HNO3(aq) + Sr(OH)2(aq) --> 2H2O(l) + Sr(NO3)2(aq)? Write the net ionic equation, including the phases. 2H^+(aq) + 2OH(aq) ---> 2H2O(l) Am I correct?
October 22, 2015

grammer
patient
October 22, 2015

Science
Compute the number of grams if there are 10.7g of c2h6 in complete combustion
October 20, 2015

Science
Hot water has a higher density then cold water
October 19, 2015

organic chem
Predict the major substitution and elimination products for butane with a Ph atom and a I atom on the 2nd carbon when added with methanol and heat. iupac name of the structure if it had carbon atoms I think is 2 dimethyl butane
October 19, 2015

Chemistry
A sample of gas in a cylinder of volume 3.64 L at 275 K and 2.68 atm expands to 7.04 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J What I did was basically W=-P(delta V) Which was -(2.68 atm)(3.4...
October 18, 2015

physics help
A block Q Of mass 70 kg is at rest on a table it is connected to block P By means two light inextensible strings knotted at S .A Third string is arranged in such a way that the string connecting block Q is horizontal. Calculate the maximum weight of block P for which block Q ...
October 16, 2015

algebra
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last ...
October 14, 2015

math
How much work is done when a 25 N block of wood is lifted 2.2 meters?
October 14, 2015

General Chemistry
A 0.179 g sample of a vitamin C tablet was titrated with 0.1000 M NaOH according to the procedure in this experiment. The titration required 7.08 mL of NaOH solution. How many moles of NaOH were used in the titration?
October 14, 2015

Chemistry
We did a titration lab, and one of the post-lab questions says: "the manufacturer of the vinegar used in this experiment claims that the vinegar contains 5% acetic acid by weight. Use your results and a density of 1g/mL to determine if this claim is true or false. So the ...
October 14, 2015

Chemistry
So would it be Cu + 2Cu+ = Cu2+ + 2Cu? I didn't change the electrons before for the half reaction.
October 10, 2015

Chemistry
Write the half reactions and the balanced equation for the galvanic cell Cu(s)| Cu2+(aq)|| Cu+(aq)| Cu(s). What is the smallest possible integer coefficient of Cu2+(aq) in the combined balanced equation? When put together the balanced equation is just Cu + Cu+ = Cu2+ + Cu. So ...
October 10, 2015

Programming
MyGoods sells Laptop, Printer, VGA cable and HDMI cable. The prices are as below: Items Price (RM) Laptop 2500.00 Printer 450.80 VGA Cable 20.65 HDMI cable 80.20 Write a program that allows the user to enter the total of item they wish to buy for each item. The program then ...
October 9, 2015

Statistics
Thank You
October 6, 2015

Statistics
1. If P(A) = 0.4 P(B) = 0.2 and P(A or B) = 0.5, find the sum of P(A and B) and P(A|B). -How would I even start this question? 2. Let A and B be two mutually exclusive events for which P(A) = 0.15 and P(B) = 0.3. Find P(A and B). -If it's mutually exclusive, wouldn't ...
October 6, 2015

Biology
Is the oval window soft or hard? Explain the advantage to your answer Personally I think it's soft and it's because being soft would it to be amplified to the ear hear things more clearly. Explain why a person with a sore throat may end up with a mild ear infection. I ...
October 4, 2015

physics
An athlete executing a long jump leaves the ground at a 28.9 ∘ angle and travels 7.70 m .What was the takeoff speed?If this speed were increased by just 4.0%, how much longer would the jump be?
October 4, 2015

social studies
how did chief pontiac unit the native americans in the great lake region
October 2, 2015

science
1.the modern atomic model includes orbiting the nucleus. which of the following parts of dalton's was disproved by the discovery of the electron atoms are tiny particles atoms cannot be divided into smaller parts atoms have specific mass and size atoms have specific ...
September 30, 2015

segi college
Do you think that southwest actions are consistent with its mission?explain ways in which the firms action are consistent or inconsistent with its mission
September 29, 2015

chemistery
at 20 degree Celsius, 65.2 g of KBr will dissolve in 100 g of water. what is the mass percent of KBr in water ?
September 29, 2015

English 30-1
What is the theme of Home Place by Guy Vanderhaeghe?
September 28, 2015

Algebra II
Hi, can someone please explain how to graph piece wise functions to me? I am extremely confused. Ex.: -x+3, if x<2
September 27, 2015

algebra
jon rented a car from a company that charged a daily rental fee and a mileage charge. He rented the car for 9 days and drove 300 miles and was charged $315. His friend Amanda later rented the same car for 5 days and drive 240 miles and was charged $186. What was the daily ...
September 25, 2015

Math
Write an expression: The quotient of a number h and 3 decreased by 2. Would you write it like this: h/3-2
September 23, 2015

Gen Chem
:(
September 23, 2015

Gen Chem
Predict products and balance equations for the reactants shown. Pb 2+(aq) + H2PO4 1-(aq)--->? Pb 2+(aq) + HPO4 2-(aq)--->? Pb 2+(aq) + PO4 3-(aq)---->?
September 23, 2015

math
what is 7 to the 6th power divided by 7 to the first power.
September 23, 2015

math
Find each quotient. Express using positive exponents: 7 to the 6th power over 7
September 22, 2015

probability
The state of Ohio has several statewide lottery options. One is the Pick 3 game in which you pick one of the 1000 three-digit numbers between 000 and 999. The lottery selects a three-digit number at random. With a bet of $1, you win $500 if your number is selected and nothing...
September 22, 2015

Chemistry
Thank you!
September 20, 2015

Chemistry
A 39 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 7.9 grams. What was the percent iron in the sample of ore? Answer in units of %. Please help me understand how to ...
September 20, 2015

engilsh
what does central claim mean?
September 20, 2015

MATH
You have to get X all by itself and your answer will be evident
September 19, 2015

CHEMISTRY !!! HELP !
I really wish I knew the answer and I would've tried to work my way around but unfortunately I don't. My teacher didn't teach me how to do these calculations and I'm doing online Hw. Thanks for your help ! I'll post the answer if I get it right.
September 19, 2015

CHEMISTRY !!! HELP !
K1*K2=(x^2*.0226)/.0158=.0000671 Which results in pH being 4.17 But it seems that my answer is still wrong. An i missing something ?
September 19, 2015

CHEMISTRY !!! HELP !
I tried with both of them but the answer was still wrong.
September 19, 2015

CHEMISTRY !!! HELP !
A solution containing 0.0158 M maleic acid and 0.0226 M disodium maleate. The Ka values for maleic acid are 1.20 × 10-2 (Ka1) and 5.37 × 10-7 (Ka2). What is the pH of the solution ?
September 19, 2015

Chemistry 101
I'm not sure but isn't there supposed to be specific heat involved in there ? (Sorry if it's a silly question, but i'm still a high school student)
September 19, 2015

Chemistry
A solution containing 0.0158 M maleic acid and 0.0226 M disodium maleate. The Ka values for maleic acid are 1.20 × 10-2 (Ka1) and 5.37 × 10-7 (Ka2). What is the pH of the solution ?
September 19, 2015

chemistry
I'm just an ordinary student like you so I might be wrong but it's H2O x Specific heat(2.09 J/g⋅C) x delta T x stands for multiplication and delta T is change in temperature
September 19, 2015

Math
I believe that is the correct answer
September 18, 2015

Physics
A Formula 1 car it heading for a straight piece of track which is 500m long. He is travelling at 220km/h. How long will he take to cover this amount of track? Time = Distance / Speed I'm confused as I don't know whether to change the distance to equal the speed's ...
September 17, 2015

Geometry
A design on the surface of a balloon is 5 cm wide when the balloon holds 71 cm of air. How much air does the balloon hold when the design is 10 cm wide? Explain the method you use to find the amount of air.
September 15, 2015

Geometry
The equation (x + 5) + (y + 3) = 169 models the position and range of the source of a radio signal. Describe the position of the source and the range of the signals.
September 15, 2015

Math
The equation (x + 5) + (y + 3) = 169 models the position and range of the source of a radio signal. Describe the position of the source and the range of the signals. How would I explain it?
September 15, 2015

History
Suspicion had always troubled the relationship between the Western powers and the Soviets. The Soviets didn't trust the West in anything, especially Stalin, though he gave them reasons that they couldn't trust him, either, when his armies began gobbling up Eastern ...
September 15, 2015

History
What factors led the wartime alliance between the United States and the Soviet Union to disintegrate into the Cold War? What would be a great short answer?
September 15, 2015

Social Studies
10 is correct
September 15, 2015

Chemistry
When 1.63 g sample of an unknown hydrocarbon is completely burned in oxygen, 4.97 g of CO2 are produced. What is the percentage by mass of hydrogen in this hydrocarbon? THANK YOUU Found out the formula: 4CH+5O2--> 4CO2+2H2O then found out the moles of CH= 0.1251 I don't...
September 14, 2015

Math
At a track meet, 50 people ran the 100-meter dash. 2 people finished in 11 seconds, 5 people finished in 12 seconds, 8 people finished in 13 seconds, 10 people finished in 14 seconds, 21 people finished in 15 seconds, 2 people finished in 16 seconds, and 2 people finished in ...
September 14, 2015

Math
Janine wants to paint just the sides of a cylindrical pottery vase that has a height of 45 cm and a diameter of 14 cm. To the nearest whole number, find the number of square centimeters she will need to paint. Explain the method you would use to find the lateral area.
September 14, 2015

Math
An hourglass, composed of two identical cones, is 12 cm tall. The radius of each cone is 3 cm. If you want to fill the bottom half of the hourglass full of salt, how much salt will you need? Explain the method you would use to find the amount of salt.
September 14, 2015

Chemistry
Calculate the number of moles of carbon atoms present in 2.2 g of ethanol (C2H6O). For this question, I would just need to find the molar mass of carbon, right? Not the molar mass of all of ethanol? So it would just be 2.2 g/ 24.02 g/mol which would equal .092. It wouldn't...
September 13, 2015

Math 9th Grade
Write an expression for the distance a car travels in t hours at a speed of s km/h
September 12, 2015

Physics
A person exerts a force of 90 N on a rope that pulls a sled across a very smooth surface. The rope is oriented 37∘ above the horizontal. The sled has a total mass of 40 kg . The sled starts at rest and moves for 10 m.
September 12, 2015

ap calculus
((1/-2-h)-1)/h
September 11, 2015

Math
if a bullet travels at 645.0m/s, what is its speed in miles per hour? can you please show me how to solve this?
September 10, 2015

Chemistry
Round each number to two significant figures: 233.356 0.002353 1.005 Can you please show me and explain how to do this? Im confused. thank you!!!
September 10, 2015

Math
A triangle has side lengths 10, 15, and 7. Is the triangle acute, obtuse, or right? Show your work and explain. I think it's gonna be an obtuse and maybe right....might be wrong...
September 10, 2015

Chemistry
Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or iodide) ions? Please help ...
September 9, 2015

probability
thanks Reiny, the buttons were pushed
September 9, 2015

probability
Two hunters shoot at the same duck. The probability of the first hunter hitting the duck is 0.2. The probability of the second hunter hitting the duck is 0.75. Hitting the duck results in its death. What is the probability of the duck being killed?
September 9, 2015

probability
A survey asks people about their reading habits with respect to three newspapers. The results show that 56% read newspaper A, 33% read newspaper B, and 27% read newspapers C. 7% of the respondents read newspapers A and B, 8% of the respondents read newspapers B and C, 11% of ...
September 9, 2015

Chemistry- PLEASE HELP
Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or iodide) ions? Please help ...
September 9, 2015

CHEMISTRY
i meant Pb304…sorry, my mistake
September 9, 2015

microeconomics
Budget constraint 1 is faced when price food = 10 and price clothing = 5. Budget constraint 2 is faced when pfood = 40/7 and pclothing = 10. The income is 100 for both budget constraints. Draw both budget constraints. Next, draw the following four consumption bundles in your ...
September 7, 2015

English: Amoretti LXXV: One Day I Wrote Her Name
What are three questions asked in this sonnet. If you can help great! If not that's fine
September 7, 2015

physics
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.09 m/s. The car is a distance d away. The bear is 20.9 m behind the tourist and running at 6.04 m/s. The tourist reaches the car safely. What is the maximum possible value for ...
September 7, 2015

microeconomics
Save Open Spaces (SOS) is a non-profit organization that promotes protection of undeveloped land. They perform two primary activities: purchasing undeveloped land for preservation and lobbying Congress for additional protection for undeveloped land. SOS has a budget of $600,...
September 7, 2015

microeconomics
Mickey is very picky and insists that his mom makes his breakfast with equal parts of cereal and apple juice. Any other combination ends up on the floor. Cereal costs 4 cents per tablespoon and apple juice costs 6 cents per tablespoon. If his mom budgets $8 per month for his ...
September 7, 2015

Physics
In a cathode ray tube, a beam of electrons is injected horizontally into the exact center of the parallel-plate region. Here L = 3.0 cm and d = 0.20 cm. The top plate has a surface charge density of σ0 = +0.15 μC / m2, and the bottom plate has a surface charge ...
September 7, 2015

Physics
Inside a metal conductor, why is it not possible to have a static charge configuration if there is a net electric field?
September 7, 2015

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