Sunday

September 25, 2016
Total # Posts: 1,443

**Physics **

Take the mass of the Earth to be 5.98 × 1024 kg. If the Earth’s gravitational force causes a falling 44 kg student to accelerate downward at 9.8 m/s2, determine the upward accelera- tion of the Earth during the student’s fall. Answer in units of m/s2.

*December 16, 2015*

**Physics **

The average speed of an orbiting space shuttle is 19700 mi/h. The shuttle is orbiting about 125 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the earth? Answer in units of h.

*December 10, 2015*

**Physics **

A jogger runs in a straight line with an average velocity of 5.4 m/s for 2.3 min, and then with an average velocity of 5.7 m/s for 1.2 min. What is her total displacement? Answer in units of m.

*December 10, 2015*

**Physics **

Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 363 N to the right. If they pull in opposite directions, the raft experiences a net external force of 147 N to the left. Draw a free body diagram ...

*December 10, 2015*

**Math**

A commuter has 245 dollars in his commuter savings account. this account changes by -15 dollars each week he buys a ticket. In one time period, the account charged by -240 dollars. For how many weeks did the commuter buy tickets How much must he add to his account if he wants ...

*December 10, 2015*

**Physics **

Suzie (of mass 84 kg) is roller-blading down the sidewalk going 34 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.1 seconds. What is Suzie’s average acceleration? Answer in units of m...

*December 10, 2015*

**Physics **

A force is applied to a 1.4 kg mass and pro- duces 2.5 m/s2 acceleration. What acceleration would be produced by the same force applied to a 12.2 kg mass? Answer in units of m/s2.

*December 10, 2015*

**English **

has anyone taken the red badge of courage unit test? I really need help! Thanks!

*December 10, 2015*

**Math **

An artist mixes blue and yellow to make a shade of green. The ratio of blue to yellow is four to one. The color blue makes up what fraction of the mixture?

*December 2, 2015*

**Math**

One-quarter of a bread recipe calls for 2/3 cup of bread flour. How many cups are needed per recipe?

*November 22, 2015*

**Math Asap**

@steve so it would be a integer

*November 18, 2015*

**Math Asap**

When adding √9 and -7, which type of number is the sum? A.irrrational B.whole number C.radical D.integer My answer is A. CAN you check please @Ms.Sue

*November 18, 2015*

**Biology**

How does chloroplasts move when placed in a different solution? I understand that chloroplasts are just randomly scattered through out the cytoplasm, but what does placing the cell in a different solution that can be hypotonic or hypertonic affect the placement of chloroplasts?

*October 24, 2015*

**CHEM redox equations help!**

I think theres a mistake in the book its supposed to be C2O4^2-. and it says it says the answer's supposed to be 2MnO4^- + 3C2O4^2- + 4OH- => 2MnO2 + 6CO3^2- + 2H2O but I didn't get that.

*October 22, 2015*

**CHEM redox equations help!**

MnO4 ^- + C2O2 ^2- = MnO2 + CO3 ^2- how would you balance this in basic solution? I keep getting the wrong answer.

*October 22, 2015*

**Educational Technology.**

Yup, right.

*October 22, 2015*

**Chemistry**

Name the organic product of the following nucleophilic substitution reaction OH-+CH3I

*October 18, 2015*

**math probability question**

If a player rolls 2 dice and gets a sum of 3 or 11 he collects $15. if he gets a sum of 12 he gets $3. the cost to play the game is $2. let x be the net money gained by the player. a. construct the prob distribution of the random variable x b. find the expected net/gain loss ...

*October 14, 2015*

**Social Studies**

Oh yeah, B?

*October 1, 2015*

**Social Studies**

1. The climate along the equator in Africa is ____. A. hot and dry B. hot and wet** C. wet and dry D. cold and dry 2. What is one way that people have changed the environment in parts of West and Central Africa? A. They have made all land arable. B. They have cut down trees ...

*October 1, 2015*

**Social Studies**

Ooh...so 1 is a savanna?

*October 1, 2015*

**Social Studies**

Okay is 1. grasslands?

*October 1, 2015*

**Social Studies**

1) A fairly dry area between the Sahara Desert and the wetter regions to the south is the ___. A. savanna B. Sahel C.grasslands D. Congo ^ Is it D, Congo? 2. Which African climate zone is home to the savanna? A. tropical wet B. tropical wet and dry C. semiarid D. arid ^Is it C...

*October 1, 2015*

**Social Studies**

NVM! IT’S C

*September 23, 2015*

**Social Studies**

2) An econmy’s total output divided by the total population is called: a- gross national product b- circular flow** c- GDP per capita d- net export

*September 23, 2015*

**Math**

Hi! I need help with this question: Directions: Find the rest of the answers for the table and then find the estimate for it's limit. Problem: lim x→0 cos(3x-1)/3x Table: (top row) -0.1, -0,01, -0.001, 0.01, 0.1 (trying to find what the bottom would be for f(x) row.

*September 22, 2015*

**Algebra 2**

Can someone explain this exponential expression problem to me please? (3x/y^3)^-3 So I got the answer (1/27x^3)/ 1/x^9. Is this correct and if not where did I go wrong?

*September 17, 2015*

**physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 29.0 m. Next, the student stands at the edge of the pool and uses a ...

*September 16, 2015*

** **

Thank you so much! That really helped!

*August 25, 2015*

**math**

If x + y + z = 26, find the value of (y-2) + (z+3) + (x-3). I was so confused on this question and didn't even know where to start. Please help me!

*August 25, 2015*

**Math**

would it be 21?

*August 24, 2015*

**Math**

the sum of 6 and 4 times a number (n) equals 90

*August 24, 2015*

**Social Studies**

okay so muscogee right?

*August 23, 2015*

**Social Studies**

dade?

*August 23, 2015*

**Social Studies**

which of the following georgia counties is most likely to experience a direct hit of a hurricane? dooly, muscogee, or dade

*August 23, 2015*

**Social Studies**

okay thank you!!!1

*August 23, 2015*

**Social Studies**

or southwest?

*August 23, 2015*

**Social Studies**

is georgia to florida southeast?

*August 23, 2015*

**Social Studies**

georgia to florida northeast? georgia to tennessee southwest? georgia to texas southwest? georgia to colorado northwest?

*August 23, 2015*

**Social Studies**

what general direction would you travel to go from georgia to florida? georgia to tennessee? georgia to texas? georgia to colorado?

*August 23, 2015*

**Please Read**

how many seasons are in a school year

*August 19, 2015*

**Science**

medals like an olympic metal

*August 18, 2015*

**Science**

what are the effects of oxygen on medal.

*August 18, 2015*

**Algebra**

Suppose f is a polynomial such that f(0)=47, f(1)=32, f(2)=-13, and f(3)=16. What is the sum of the coefficients of f?

*July 28, 2015*

**math**

How do you find the area and perimeter of your room floor?

*July 28, 2015*

**kempston**

i spent 1/4 of my money in one shop and 1/3 of my money in another shop. what fraction was left?

*July 21, 2015*

**Organic Chemistry**

Consider the weak organic base n-propylamine. The Kb value for this base is 1.3-10^-5, and its pKa is 10.6. At what pH are the "proton on" and "proton off" forms present in equal concentrations? At what pH values would the "proton on" form have ...

*July 19, 2015*

**Math**

Tiffany is constructing a fence around a rectangular tennis court. She must use 300 feet of fencing. The fence must enclose all four sides of the court. Regulation states that the length of the fence enclosure must be at least 80 feet and the width must be at least 40 feet. ...

*July 2, 2015*

**Math**

The area itself consist of length x width. The formula for a rectangular prism is length x width x height . So , the question already give you all the hints and you just have to multiply all of them ; 25 x 10 = 250

*June 24, 2015*

**Chemistry**

Electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. So the number of electron must be 15 , right ? But , what if m = 1 ? Does it effect the number of electron ?

*June 23, 2015*

**math**

What number is the sum of 8 numbers whose average is 13

*May 31, 2015*

**Math**

Is $5.00 enough money to buy 1 pound of peanut

*May 21, 2015*

**Math**

Finish the following to make a perfect square. 1.) x^2+sqrt3x+______ 2.) x^2+4x+_____

*May 19, 2015*

**Math**

A Voting Poll: Candidate A: 30% Candidate B: 50% Undecided: 20% The Table above summarizes the results of an election poll in which 4000 voters participated. In the actual election, all 4000 of these people voted and those people who chose a candidate in the poll voted for ...

*May 18, 2015*

**Math**

Ok, or I could find the slope correct? Thank you!

*May 18, 2015*

**lanugage**

that wasn't my intention. um sorry

*May 14, 2015*

**lanugage **

what is the prepositional phrase in the sentence? The family drove to the store. a. the family drove b. drove to the store c. the family d. to the store a?

*May 14, 2015*

**Social Studies**

Okay thank you

*May 13, 2015*

**Social Studies**

what is the problem with arabia and iraqs dependency on oil?

*May 13, 2015*

**ss**

why was the migration of the Aryans to India significant

*May 13, 2015*

**Social Studies**

Farmers in the northern Indo-Gangetic plain of south Asia rely mostly on: A. Water carried by rivers that drain from the Himalayas B. Cool air that brings drenching rain C. Monsoons that bring needed moisture D. Desert wind that balances the cold moist air from the Himalayas A?

*May 13, 2015*

**Math**

How would you factor (x+y)^2-(x-y)^2

*May 12, 2015*

**analytical chemistry**

In generating the synchronous spectrum, it is not necessary to specify the wavelength range, why?

*May 12, 2015*

**Science**

How do two tissue types work together to improve organ function

*May 7, 2015*

**Social Studies**

What are the causes of the water pollution that threaten South Asia today? overpopulation, growing cities, damming of rivers, and the need for more irrigation burning down of forests, building of new factories, and more cars the use of major rivers in religious festivals ...

*May 6, 2015*

**Math **

How do you find the quadratic equation, in standard form, that has the roots x= (2±√5)/3

*May 5, 2015*

**Math**

Apply the following transformations to this parabola. Y=2(x+3)^2-1 A) reflection in the x-axis, followed by a translation 5 units down. I got : y = -2(x+3)^2-6 But the answer is y= -2(x+3)^2-4 Why is it -4 And also. How odd you do reflections in the y axis without drawing the ...

*May 5, 2015*

**Math**

Determine one of the zeros of the quadratic realtion: y=(x-(k/2))^2-[(k-2)^2/4] I tried to do this by expanding and got to y=x^2-mx-k+1 How are you suppose to do this

*May 5, 2015*

**Math**

A tangent is a line that touches a circle at exactly one point. For what values of k will the line y= x+k be tangent to the circle x^2+ y^2 = 25? I know I'm suppose to use the properties of a discrimminate. But how

*May 4, 2015*

**Math**

in the relation y=4x^2+24x-5, for which values of y will the corresponding equation have no solutions The answer is y<-41. But I got that y>656 by using d=b^2-4ac

*May 4, 2015*

**Math**

The equation x^2 + k = 6 x has two distinct real roots. Find the range of values of k. I know that you do 36 -4k > 0 -4k > -36 k < 9 But I don't get why you switch the signs. So. When do u switch signs

*May 4, 2015*

**Socials**

With your descriptions, yes the Canadian government was very similar to American governments.But how do they negotiate?

*May 4, 2015*

**Socials**

I am writing an essay for socials and the topic is: To what extent was the treatment of First Nations by the Canadian government justified? So far, I plan to explain both sides but lean more to the unjustified side(2 body paragraphs on that). My points are: the treaties and ...

*May 4, 2015*

**education**

Just want to know what these questions are asking for. thanks What view do you have of the children's skills and competencies? In what ways do you need to transform your view of children to see them in a more positive light? what skills do you want to strengthen in ...

*April 25, 2015*

**Language Arts**

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

*April 17, 2015*

**socialstudies**

How about you read your books?

*April 14, 2015*

**social studies**

B. ;-)

*April 6, 2015*

**science PLZ HELP**

Just took the practice, these are the answers. In this order 1 - 14. 1. A 2. B 3. A 4. B 5. C 6. C 7. A 8. B 9. C 10. A 11. B 12. A 13. B 14. A [true]

*March 31, 2015*

**math**

In quadrilateral QRTS, we have QR = 11, QS = 9, and ST=2. Sides line RQ and line ST are extended past Q and S, respectively, to meet at point P. If PS = 8 and PQ = 5, then what is RT?

*March 29, 2015*

**I need help with this ALGEBRA**

Yes you were! Good job! Glad I could help. :)

*March 17, 2015*

**I need help with this ALGEBRA**

v=20√(273+t) 329 = 20*sqrt(273+t) 16.45 = sqrt(273+t) 273+t = 16.45^2 t- 16.45^2-273 t = -2.4 degrees celsius Hope that helps? :)

*March 17, 2015*

**Science**

Glad I could help! :)

*March 17, 2015*

**Science**

I don't think C is right. D. is the correct answer.

*March 17, 2015*

**Algebra**

1. Solve log(4/x) (x^2 - 6) = 2. (note: the (4/x) is underscored) 2. Show that loga [(x + {sqrtx^2-5}) / 5] = -loga (x - (sqrtx^2-5))

*March 15, 2015*

**Algebra**

1. Solve: log (y-1) = -log(y-9) 2. Find the inverse of the logarithmic function f defined by f(y)= 2log5 (2y-8)+3.

*March 14, 2015*

**Math**

1. Solve: log (y-1) = -log(y-9) 2. Find the inverse of the logarithmic function f defined by f(y)= 2log5 (2y-8)+3.

*March 14, 2015*

**Math**

Thank you very much. Very clear explanation.:)

*March 13, 2015*

**Math**

1. Solve for y in the equation 15 * 3^(y+1) - 243 * 5^(y-2) = 0. 2. Solve: log y-1 = -log(y-9)

*March 13, 2015*

**Math**

1. Find the inverse of the logarithmic function f defined by f(y) = 2 log5 (2y-8) + 3. 2. If x > y > 1, what is the largest possible value of logx (x/y) + logy (y/x)?

*March 13, 2015*

**Math**

1. The sequence log2 32, log2 y, log2 128, ... forms an arithmetic sequence. What is the value of y? 2. If log a^2 b^3 = x and log (a/b) = y, what are the values of log a and log b?

*March 13, 2015*

**Math**

1. Find all values of p so that 6p, 4p-1, p^2 - 1 will be an arithmetic sequence. 2. The common ration of a geometric sequence is -3. IF the terms of this sequence are 3y, y+6, z+1, ..... respectively, what is the value of z?

*March 13, 2015*

**Chemistry**

A chemist reacts 112 g of iron with 72 g of water. State which reactant is the limiting reagent. Calculate what is the maximum yield in grams of Fe3O4 that could be produced in this reaction. For the substance that is not the limiting reagent, calculate the amount in excess.

*March 12, 2015*

**Health**

1:According to MyPlate which two food groups should you consume in the largest amounts? A:Fruits And Grains B:Grains and Protein C:Protein and Veggies D:Veggies and Grains

*March 6, 2015*

**Geometry**

1. If triangles EIO = UAN, EI = 3x-4, IO = 2x+5, UA = 2x+3 and UN = 3x+1, solve for the value of x, find the perimeter of triangle UAN and identify the smallest angle in triangle EIO. 2. If triangle FAT is equal to triangle GRC, FA = 24cm and the ratio of GR, RC and GC is 2:1:...

*March 4, 2015*

**Algebra**

True or False and please explain so that I can understand. Thank you. 1. (1,0) is always a point on the graphy of y = logb (x). 2. If x=b^2y for b > 1, then y = 1/2 logb (x).

*March 4, 2015*

**Science 8th Grade**

Yes, that is correct.

*March 4, 2015*

**math**

There are 6,975 folders if 1,735 folders were handed out . How many will I have left? 6,975- 1,735=

*February 25, 2015*

**math**

11/21 or 9/17. which one is greater and what is the work/common denominaters

*February 24, 2015*

**Socials**

oh and how much does elizabeth get paid for her jobs? Like 1 pound a week? or..

*February 24, 2015*