Friday

July 25, 2014

July 25, 2014

Total # Posts: 148

**Algebra**

write the equation of the circle passes through the point (√5,0) and whose center is the origin

**Math**

identify the center and radius of the circle with the equation (x+5)^2+(y-2)^2=9 A. this equation represents a circle with center (5,-2) and a radius of 3 units B. This equation represents a circle with center (-5,2) and a radius of 3 units C. this equation represents a circle...

**Math**

identify the center and radius of the circle with the equation (x+5)^2+(y-2)^2=9 A. this equation represents a circle with center (5,-2) and a radius of 3 units B. This equation represents a circle with center (-5,2) and a radius of 3 units C. this equation represents a circle...

**algebra**

Which cosine function has maximum of -2, and a period of 2pi/3

**Algebra**

hahaha yes, yes i do its a problem for me(:

**Algebra**

the table shows the results of a survey of college students. find the probability that a student's first class of the day is a humanities class, given the student is female. First class of the day for college students male female humanities 70 80 science 50 80 other 60 70

**math help**

14x-3y+2z=100 -17x+8y+10z=11 -3x+13y+29z=81

**Algebra 2**

A beam rests against a wall, forming a 50 degree with the floor. Use the function y=9 sec 0 to find the length of the beam to the nearest tenth of a foot. choice: 14.0ft, 11.ft7, 5.8ft, 6.9ft

**Math**

dartboard is 16 inches and bulls eye is 6 inches

**Math**

Garrett throws a dart at a circular dart board. The dart board has a radius, and the bull's eye in the center of the dart board has a radius of 6 inches. What is the probability that a dart thrown at random within the dartboard will hit the bull's eye? Round your answe...

**5th grade Math**

Sorry did not mean to post this question again! Steve answered it for me earlier. Thank you Steve for you answer!

**5th grade Math**

Dr. Gallo's waiting room has a total of 18 magazines, including 3 fashion magazines. There are 5 more cooking magazines than there are decorating magazines. How many decorating magazines are there? You can use cubes to act out the problem.

**5th grade Math**

Dr. Gallo's waiting room has a total of 18 magazines, including 3 fashion magazines. There are 5 more cooking magazines than there are decorating magazines. How many decorating magazines are there? You can use cubes to act out the problem.

**Statistics**

You are a real estate agent and you are trying to predict home prices for your clients that want to list their house for sale. You have a very small city without much data. You will need to use the data that you have available for the past year on homes that have been sold. Be...

**Statistics**

Calculate the residuals using the following info: number of people:12,14,15,18,20,16,14,13,18,19,20,22 and cost of drinks:24,30,36,38,65,44,36,30,39,76,80,85

**Statistics**

You are a real estate agent and you are trying to predict home prices for your clients that want to list their house for sale. You have a very small city without much data. You will need to use the data that you have available for the past year on homes that have been sold. Be...

**Statistics**

Calculate a linear regression, the residuals, and the correlation between two variables using the following info: number of people:12,14,15,18,20,16,14,13,18,19,20,22 and cost of drinks:24,30,36,38,65,44,36,30,39,76,80,85

**statistics**

Estimate the tenure of someone that could have $5.8($k) and 15 years of job satisfaction. Make sure to state your multiple regression equation in your example. What are some of things that you can estimate from the model? How effective is evaluating the R-squared of the model?...

**Physics**

what force can cause the displacement of an object but does no work??

**math**

1. Ms.lynch has 21 coins in nickels and dimes. Their total value is $1.65. How many of each coin does she have? 2. A vending machine that takes only dimes and quarters contains 30 coins, with a total value of $4.20. How many of each coin are there?

**math**

the larger of 2 #s is 5 less than twice the smaller. their sum is 43. find the #s

**math**

The second of two numbers is 7 times the first. Their sum is 72. Find the numbers.

**physics**

A truck of mass 8,000kg is traveling along a level road at an initial speed of 25m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13m/s.

**math check my answers**

squared= ^2

**math check my answers**

1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?

**math**

if 30apples = $47 then 1 apple = x cross mutilpy and you get 30x=$47 divide each side by 30 x=1.56666666 rounded to $1.57 per apple.

**Writing**

i wrote about my school's dances (7th grade dances). It was be in the yearbook.

**Writing **

What are some ideas for a title of an article on dances at school?

**math (algerba 1) Please help! **

x+y=0 3x+y=-4 Sovle each system of equation by graphing. If got the answer (-3,3), but it's not there. Please explain!

**Physics**

Calculate the total heat content of 10 kg of ice at -23°C. (Hint: absolute zero is -273°C.) Be mindful of significant figure rules for both multiplication and addition.

**Physicis **

How much energy is needed to heat and melt 3.0 kg of copper initially at 83°C? Be mindful of significant figure rules for both multiplication and addition

**Physics**

A 6.00 Kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.360. Determine the kinetic frictional force that acts on the box when the elevator (a) is stationary (b) accelerating upward with an acce...

**Physics**

If the 50.0 kg boy were in a spacecraft 5R from the center of the earth, what would his weight be? (Use the 50.0 kg boy for significant figures) i got 20N again not sure.. it dosnt tell me if i got them wrong or right online classes are horrible and very confusing

**physics**

If an object is dropped from a tall building and hits the ground 3.0 s. later, what is the magnitude of the object's displacement in 1.0 s.; in 2.0 s.? for 1.0s i got 9.8 for 2.0s i got 20. is this correct?

**physics **

If an object is dropped from a tall building and hits the ground 3.0 s later, what is the velocity of the object when it hits the ground? (Remember that the velocity is downward) i got -29m/s is this correct?

**physics **

If an object is thrown up at an initial velocity of 9.8 m/s, what would be the magnitude of the final velocity upon impact with the ground? im doing an online class and i dont have a book so if you could explain some of the question that would be great thanks so much

**physics **

If an object is thrown up at an initial velocity of 9.8 m/s, what would be the magnitude of the final velocity upon impact with the ground? im doing an online class and i dont have a book so if you could explain some of the question that would be great thanks so much

**physics**

If an object is dropped from a tall building and hits the ground 3.0 s later, how tall is the building?

**chemistry **

I have a worksheet that has a question on it the question states: How much iron can be recovered from 25.0 g of Fe2O3 and that is all i have i have just started in the middle of this class can i have an explanation of how to get to the answer please?

**math**

Write a number with 8 more in the tens place (The number is 498,763.14)

**Math**

Ok I have it! 40 divided by 8 = 5 x 6 = 30 Roses

**Math**

Bunches of 6 roses were selling for $8. Anita paid $40 for roses. How many roses did she buy? PLEASE HELP!

**Trig**

Prove cos^2t+4cost+4/cost+2=2sect+1/sect

**Trig**

A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

**Trig**

prove sin(α+β)sin(α-β)=cos^2β-cos^2α

**chemistry**

I realize this, but I don't understand how to get k1 and k2 in the first question or the second. Also it only gives one temperature in the first question so would t1 and t2 be the same?

**chemistry**

I realize this, but I don't understand how to get k1 and k2 in the first question or the second. Also it only gives one temperature in the first question so would t1 and t2 be the same?

**chemistry **

I have two questions that I really don't understand. The first one is: A reaction proceeds with delta H=-10kJ/mol. The energy of activation of the uncatalyzed reaction is 150kJ/mol, whereas it is 100kJ/mol for the uncatalyzed reaction. How many times faster is the catalyze...

**writing**

Socrates' role in the discussion is to derive an accurate definition of justice by using counterexamples against Thrasymachus' multiple renditions. Thrasymachus makes it easy for Socrates to prove him wrong because he is too quick to offer his definitions of justice an...

**writing**

Throughout the discussion with Socrates, Thrasymachus jumps to conclusions about what the definition of justice really is and does not consider the implications that he is making. This makes it easy for Socrates to shed light on the flaws in Thrasymachus' definitions and f...

**writing**

also, that he doesn't consider what his definitions really mean before he says them otherwise socrates wouldn't be able to prove him wrong as quick

**writing**

my stance is that he gives his opinion too quick.

**writing**

Ok here is a new one. I tried to follow all five of the tips. On multiple occasions, Thrasymachus is too quick to offer his definitions of justice and does not consider the implications that they put on society but Socrates is present to shed light on the weaknesses in termino...

**writing**

*philosophers, sorry for mistake

**writing**

I need help writing a thesis statement for my philosophy paper. The paper is about two philosopher's, Thrasymachus and Socrates. Essentially the paper is about the multiple definitions of justice that Thrasymachus throws out and how Socrates proves them wrong and points ou...

**AP Chem. 3**

A 1.80 g sample of a large boimolecule was dissolved in 21.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03°C·k...

**Prob and Stats**

If X is a random variable with distribution X~N(350,110) find (a)P(X<400) and b)P(250<X<400)

**statistics**

If a large number of people guess randomly on each of 100 items on a true-false test, the mean would be expected to be ì=___*, and ó=__*. • What % of the examinees would be expected to get a score of 65 or >?

**spanish**

Please translate these words into a sentence. bebur, manuel, debe, aqua

**Physics**

You ride your bicycle down a hill, maintaining a constant speed the entire time. 1. As you ride, does the gravitational potential energy of the Earth-bike-rider system increase, decrease, or stay the same? 2. Does the kinetic energy of you and your bike increase, decrease, or ...

**physics**

A backpack full of books weighing 58.0 rests on a table in a physics laboratory classroom. A spring with a force constant of 140 is attached to the backpack and pulled horizontally. If the backpack begins to slide when the spring ( = 140 ) stretches by 2.40 , what is the coeff...

**physics**

nvm. i got it. 84 was wrong... thanks for your help!

**physics**

plugging everything in do I get 84.15? That seems a little high...

**physics**

A car goes around a curve on a road that is banked at an angle of 30.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?

**Chemistry**

Which of the following compounds is a strong electrolyte? a. C6H12O6 b. C7H14O5 c. C4H8O2 d. NaC2H3O2 e. All of these --- I think it is D but I'm not sure. Also, how do you know if it is a strong or weak acid?

**math**

15trips

**MATH**

10*26=260

**MATH**

10*26=260

**MATH**

260 license plates

**Math**

paper = 10 point, 10 off for each day late. student missed 5 out of 10 and was 3 day late. what is the score?

**English**

By the house the boy and his dog were standing.

**Chemistry**

well, now working through it I get 5.4x10^14

**Chemistry**

Convert the value 8.1 x 10^15 ng/m3 to units of g/cm3. I am not sure how to do this kind of problem when the units are cubed. This is what I have so far. (8.1 x 10^15 ng/m3) x (1 g/ 1x10^9ng) x (1m/ 100cm) = 8.1 x 10^22

**chemistry**

Calcium Hydroxide

**health**

I copied this answer from answerbag. I hope it helps: There are so many ways to contract AIDS and HIV that its frightening when you think about it. Here are the most common: 1. Unprotected Sex - the #1 transmitter of AIDS and HIV, though that is being disputed currently. Unpro...

**Chemistry--Quick Question**

Just clarifying but C would be an observation because you would be able to feel/observe the heat coming off of it as it reacts, right?

**Chemistry--Quick Question**

Okay, I take that back. I think the correct answer(s) would be A, C, and D. I don't think the answer is B because that is an observation and I don't think the answer is E because that is a theory.

**Chemistry--Quick Question**

Which of the following are LAWS according to the Scientific Method? It is possible for more than one answer. a. The volume of a gas is inversely proportional to its pressure. b. A solid has a mass of 100.0 grams and a volume of 11.1 mL. c. When a piece of magnesium burns in ai...

**chemistry**

a magnet would pull the iron out of the sand and salt. Can you add water? If so you could add the sand and salt together with water. the salt would dissolve in water. You could use the filter to take the sand out of the saltwater/sand mix and then get the salt back by using th...

**chemistry**

density=mass/volume plug and chug your numbers to find out

**Chemistry**

That is correct. Electrons have a negative charge to them. Atoms typically have an equal number of protons, which are positive, to electrons. This makes the atom neutral. By losing an electron, and taking away a negative force, you weigh the atom on the positive side making it...

**chemistry**

Does Kv2SOv4, Kv2COv3 or KCv2Hv3Ov2 create the greatest increase in pH when mixed with water?

**chemistry **

The normality of Hv2SOv4 is given as 0.20 N for a reaction in which the Hv2SOv4 furnishes two hydrogen ions. What is the molarity of the Hv2SOv4? A. 0.40 M B. 0.30 M C. 0.20 M D. 0.10 M

**chemistry**

What is the gram equivalent mass? In a reaction of Hv3POv4 with a base, three protons are donated for each formula unit of Hv3POv4. What is the gram equivalent mass of Hv3POv4?

**chemistry**

How would set up a problem like this? A mass of 20.0 g of NaOH is dissolved in water to form 5.0 dm^3 of solution. What is the molarity of the hydrogen ion concentration if the temperature is 25 degrees Celsius?

**Chemistry**

"A 25.0% solution of Al2(SO4)3 has a density of 1.75 g/ml. What is the mass of dissolved solute in 40.0 ml of solution?" How would one set this problem up?

**geometry**

that doesnt help

**geometry**

A rectangular box measures exactly 72 cubic feet. What are its possible dimensions? Give 3 answers.

**Chemistry **

How many atoms of element "R" are present in 55.80 g of (AH3)4(R2O3)4 (molar mass = 478.17 g/mol)? Please help. I've tried going (g of molecule/mol)x(1 mol of molecule/ 55.80g)but I'm not really sure what to do with this.

**north america**

san francisco is a city california a state

**north america**

city

**5th grade**

Friday= 8/10 of a mile ran Wednesday= 1/10 of a mile ran Monday= 6/10 of a mile ran Tuesday= 11/10 of a mile ran

**PLEASE HELP: Chemistry**

How many atoms of element "R" are present in 55.80 g of (AH3)4(R2O3)4 (molar mass = 478.17 g/mol)? Please help. I've tried going (g of molecule/mol)x(1 mol of molecule/ 55.80g)but I'm not really sure what to do with this.

**Chemistry**

Hello, I am looking just for someone to tell me how I go about doing this problem, ie. the formula that i would need to know for it. I would really like to figure it out on my own but I'm not sure how to. The mass ratio of Kr to F in a particular compound is 2.206:1. How m...

**Algebra**

I think it would be 1/12. Each dice has 6 numbers, thus there is a 1/6 probability of rolling any number. When you roll the second dice you have the same probability of getting any number. Since you want the numbers to be the same you would multiple the probabilities of gettin...

**reimbusment methodology**

Your hospital has just recieved a reimbursement rejection from the fiscal intermediary for two outpatient procedures that were performed on the same day. This rejection was probably generated by....A. the CCI outpatient code editor B. the internal auditing program C. the HAVEN...

**12th grade**

prove that the statement 1/5+1/5^2+1/5^3 +...+1/5^n=1/4(1-1/5^n) is true for all positive integers n, write your proof in the space below

**Physics**

for imcomplete cancellation to occur, opposite pulses must have?

**Math**

A furniture company displays bedroom sets which require 21 square meters of space and living room sets which require 42 square meters of space. The company, which has 546 square meters of available space, wants to display at lease 6 bedroom sets and atleast 5 living room sets....

**algebra 2**

16 beds * 21 square meters of space = 336 5 living * 42 square meters of space = 210 add those two up and get the total availible space of 546 Draw the graph showing the feasible region.Label the coordinates of the vertices of the feasible region.