# Posts by Mariana

Total # Posts: 101

**Math**

The table below shows the populations of four countries for the year 2006 expressed in scientific notation. Population in 2006 Country Population Lebanon 3.90 × 106 Mexico 1.08 × 108 Peru 2.84 × 107 Spain 45.5 × 106 Of the countries listed, which one ...

*November 2, 2016*

**Math**

I mean A!

*October 11, 2016*

**Math**

So it's B.

*October 11, 2016*

**Math**

Can someone please check my answer???

*October 11, 2016*

**Math**

which of these numbers is not rational? A.√3 B.0.25 c.1/5* d.√9 *= My answer

*October 11, 2016*

**english**

I have to revise each statement to eliminate the unethical aspects. - Factory- trained technicians respond to all our calls. - “The service contract… on the whole… applied to upgrades .”

*August 24, 2016*

**Stastics**

In a study of proctored and non-proctored tests in an online course, researches obtained the data below: Group 1 (Proctored): 𝑛 = 30, 𝑥̅= 74.30, 𝑠 = 12.87 Group 2 (Non-proctored): 𝑛 = 32, 𝑥̅= 80.62, 𝑠 = 22.09 Use of 0....

*April 26, 2016*

**Stastics**

In a study of proctored and non-proctored tests in an online course, researches obtained the data below: Group 1 (Proctored): 𝑛 = 30, 𝑥̅= 74.30, 𝑠 = 12.87 Group 2 (Non-proctored): 𝑛 = 32, 𝑥̅= 80.62, 𝑠 = 22.09 Use of 0....

*April 26, 2016*

**physical science**

Balance of the following equation Ca+O2=CaO

*March 16, 2016*

**physics**

A ball is thrown vertically upward with an initial speed of 25 m/s. Then, 1.8 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 32.1 m/s . How far above the release point will the ball and stone pass each other? The ...

*February 8, 2016*

**Physics**

Two students are on a balcony 22 m above the street. One student throws a ball vertically downward at 15.5 m/s; at the same instant, the other student throws a ball vertically up- ward at the same speed. The second ball just misses the balcony on the way down. How far apart ...

*February 8, 2016*

**math**

Oh my goodness I just saw this but thank you so much Mrs. Sue you are so sweet. And thank you very much for helping me. :)

*November 30, 2015*

**math**

Ok I got it. Thank you so so much! :)

*November 30, 2015*

**math**

I got 212.55?!

*November 30, 2015*

**math**

Ok so Mrs. Sue can you please explain it to me cause I still don't get it?! :(

*November 30, 2015*

**math**

Ok thanks

*November 30, 2015*

**math**

Ok so which one do I use to get the answer? Mrs. Sue's or Damon's?!

*November 30, 2015*

**math**

During the soccer season, richard attempted 80 goals and made about 65% of them. a. How many goals did Richard make? b. The team made a total of 327 goals. What percent of the team's made goals did Richard make? 15 goals;24.5% 52 goals;15.9% 61 goals;49.2% 212 goals;64%

*November 30, 2015*

**Math**

Oh wow that's really easy... thank you so much Damon! :)

*November 30, 2015*

**Math**

3. After a study was completed at a local college, it was found that 386 1,112 student live with there parents. What percent of students live with their parents? Round to the nearest hundredth of a percent where necessary. 3.44% 34.71% 49.36% 65.28% Can someone please help me ...

*November 30, 2015*

**Math**

Awesome. Ok so can you please help me with 4,6, and 8 plz?!

*November 19, 2015*

**Math**

Oh and if any are wrong can u help me?! Thanks so much! :)

*November 19, 2015*

**Social Studies**

Lol this isn't math lol its social studies... I just always do math on here!lol

*November 19, 2015*

**Math**

1. What compromise did states reach for the purpose of determining representation by population in the House of Representatives? (1 point) Slaves would be counted as three-fifths of a person for official population counts. Slave populations would count for representation but ...

*November 19, 2015*

**Social Studies Check my answers!**

@Shrek you're just trying to pass a test. Have you even read or understood what you're going to do???

*November 16, 2015*

**Math extra credit**

Omg thank you soooo much Reiny! :D

*November 7, 2015*

**Math extra credit**

Ok I also figured out number 2 but not the last one lol

*November 7, 2015*

**Math extra credit**

Never mind I figured out number 1 but not the others. :(

*November 7, 2015*

**Math extra credit**

To find the next address: If the owner imported 100 square feet of marble to decorate the façade of the house and 13 square feet of scrap was left when construction was completed, how much marble was used? Write and solve an equation To find the next address: The ...

*November 7, 2015*

**Science**

correct

*October 22, 2015*

**MATH**

ESTIMATE QOUTIENTS OF 215 DIVIDE BY 9?

*October 19, 2015*

**math**

Ok I figured it out but I got 2 1/4 and 1/2

*October 5, 2015*

**Math help please?! :)**

I got it thanks so much but yah what about the first one?!

*October 5, 2015*

**Math help please?! :)**

What is the solution to (4 x 10^3) x (6 x 10^6), written in scientific notation? 24 x 10^9 2.4 x 10^9 24 x 10^18 2.4 x 10^10 Ted Andrews bought 15 shares of Clark Company stock at $14.875. He sold them a month later $20.375. What was his profit? $6.50 $49.50 $80.50 $82.50 ...

*October 5, 2015*

**math**

Thank you!

*October 2, 2015*

**Math**

Oh my goodness thank you so much! Yes it helped... now I can take the whole test! :D Thank you so so much!

*October 2, 2015*

**math**

What is 0.00000387 in scientific notation? And I don't want anyone to give me the answer... I want someone to help me and be patient because I'm not the fastest learner!

*October 2, 2015*

**math**

what is 98654433445*876689956e347 equal

*September 14, 2015*

**science**

I'm sorry Sierra I don't... I only know the second one because of my Mom, lol but I'm sorry I wish I could help! :(

*April 29, 2015*

**science**

The first one is A I'm not sure about the second on. but good guess! :)

*April 29, 2015*

**science**

Thank you so much for explaining it! :)

*February 11, 2015*

**Art Help!**

yeah C was correct

*December 4, 2014*

**Math Help!!!**

there wrong on the last two^

*November 12, 2014*

**Literature**

thats correct i just took the quiz

*October 8, 2014*

**International trade**

Can you apply comparative advantage theory to business outsourcing?

*October 1, 2014*

**MATH HELP PLEASE**

just got a 100 on it its B, A, D, B

*September 30, 2014*

**Math**

I got a F in math

*September 23, 2014*

**Math**

The daily production costs C (in dollars per unit) for a manufacturer of lighting fixtures are given by the quadratic function C(X)=800-10X+0.25X2 where x is the number of units produced. How many fixtures should be produced to yield a minimum cost per unit?

*September 9, 2014*

**math**

The profit P ( in dollars) for a manufacturer of sound systems is given by the quadratic function P(X)=-0.0003X2+150X-375000 where X is the number of units produced. What production level will yield a maximum profit?

*September 9, 2014*

**science (check plz)**

No its A, I just took the test! :)

*June 12, 2014*

**Science--HELP!!**

Lol ya'll are funny. :D

*December 9, 2013*

**chem**

why would it not be [Kr] 5s^2,4d^9

*August 11, 2013*

**Chemistry....helpppp**

Predict Which among the following substances is likely to have a relatively high melting point.(more than one answer may be selected) * P4 * CaCl2 * CCl4 * AlN * CaC2 * None of the above

*August 9, 2013*

**Chemistry**

What is the electron pair geometry for NCL3?

*August 7, 2013*

**Chemistry**

What is the electron pair geometry for NCL3?

*August 7, 2013*

**math**

i am stuck on this problem! help! Write a quadratic equation that has two solution, 4 and -4. Leave the polynomial in reduced factored form.

*August 6, 2013*

**math**

find the GCF 87h^14t^16,6h^2t^27,15h^6t^28

*August 5, 2013*

**Chemistry**

Why is ionization energy for calcium greater than that for potassium?

*August 4, 2013*

**Chemistry**

how do i write the complete electron configuration for Ga3+ and Mg2+????????????

*August 4, 2013*

**Chemistry**

how many moles of Mg2+ and NO3(there is a negative sign on top of the 3 in NO3)form for each mole of Mg(NO3)2 that dissolves?

*July 31, 2013*

**Algebra I**

Thank you! It did work very well. I will use this website more frequently.

*February 21, 2013*

**Math**

I don't know

*February 20, 2013*

**math**

12345/6789

*January 13, 2013*

**math**

Ok, your very rude @none of your concern!

*December 3, 2012*

**7th grade math Ms. Sue please!**

Maybe *none of your concern* has different questions on his test, but I'm sorry you got a bad grade! :(

*October 30, 2012*

**7th grade math Ms. Sue please!**

Actually BOOP was right! :) Great job

*October 30, 2012*

**7th grade Math quick help Ms. Sue**

I don't think there's anything wrong with this site but I don't think they should give the answers I think they should be patient and "help" them with there problem! Homework "help" Cause how are we supposed to know it later if we were just ...

*October 3, 2012*

**Algebra 2**

A Ball Bounced Four Times,reaching Three Fourths Of Its Previous Height With Each Bounce .after The Fourth Bounce,the Ball Reached A Height Of 27 Cm. how High Was The Ball When It When It Was Dropped?

*September 8, 2012*

**health information**

some examples on some responsibilities on how a manager of a 60bed will have after he is assigned to also run a 90 beds. Becoming a split department. What does this split department situation do to your efficiency as a mannager, and how can you compensate for this change? Also...

*August 30, 2012*

**health information**

becoming a split department manager. Generate a list of the ways in which you believe your responsibilities and the tasks you perform are likely to change because of the merger and your resulting new role?

*August 30, 2012*

**Algebra**

idont the answer i need help

*April 21, 2012*

**physics**

a force of 5 N is required to slide a block at constant speed over the dry surface of a table. The block has a mass of 2.5 kg. The coefficient of friction is..

*January 30, 2012*

**Spanish**

SraMcGin, si me permite decirle, "norteamericana" se pudiera referir igualmente a alguien de Canada. Norteamerica no es exclusiva de Estados Unidos.

*December 10, 2011*

**Spanish**

And when I said it was right, I meant the translation in your second post. "Estadounidense" is the right word.

*December 10, 2011*

**Spanish**

Julian, yours is alright. The word "americana" is a wrong translation.

*December 10, 2011*

**Biology**

Using the codon table, determine the sequence of the protein that will be produced from the mRNA sequence below. Be sure to begin with a start codon. 5'-CCCAAUGUUGCGGCCAUGACAC-3' A. N-Methionine-Leucine-Arginine-Proline-C B. N-Methionine-Histidine-Serine-Threonine-...

*December 10, 2011*

**Physics**

What is the energy released in the fusion reaction: 2H+2H--> 4He + Q? How do I calculate this?

*December 4, 2011*

**Physics**

You are right, considering the mass of the electron emitted I got .352 MeV, which is the correct answer. Everywhere I looked on the internet said to neglect this mass, but I guess it does make a difference. My answer was negative though, does that mean that I only consider the...

*December 3, 2011*

**Physics**

How much energy is released in the beta decay of 14 C? Since carbon-14 decays into Nitrogen-14, the mass of carbon 14 is 14.003242 and the mass of nitrogen 14 is 14.003074, What I did was: (14.003242-14.003074)u * 931.5 MeV/c^2 = (0.156 MeV/c^2)*c^2 = .156 MeV but that's ...

*December 3, 2011*

**Chemistry**

Calculate the pH at the equivalence point for the titration of 0.120 M methylamine with 0.120 M HCl (kb of methyalamine is 5.0 x 10^-4)

*November 13, 2011*

**Biology**

Does light wavelength affect cellular respiration rate? I know that it affects photosynthetic rate. I think it is not supposed to affect cellular respiration rate, but I recently conducted an experiment that has proved otherwise and I just want to make sure about the facts ...

*October 31, 2011*

**Statistics**

Normal probabilities. 11% of all observations are less than z

*September 24, 2011*

**chemistry**

You have an aspirin dissolving in water, with this elements ( arthritis strength BC, arthropan and Ascripitin A/D), how can you separate them to find the amout of each on in water?

*June 28, 2011*

**English**

Into day's - in todays Some basic grammar and spelling that can be fixed by reading aloud and removing 'awkward' words/phrases. Even if they look good on the page, if they don't feel right you should remove them. Also using the same method properly place ...

*April 24, 2011*

**Science. Please Help!**

CHARLES LAW PROBLEMS

*February 14, 2011*

**math**

How much is 4.36 meters in centimeters?

*February 8, 2011*

**Chemistry**

Calcium carbide, CaC2, can be produced in an electric furnace by strongly heating calcium oxide (lime) with carbon. The unbalanced equation is CaO(s) + C(s) ¨ CaC2(s) + CO(g) Calcium carbide is useful because it reacts readily with water to form the flammable gas ...

*February 5, 2011*

**Chemistry**

An unknown salt AS x XH2O was analyzed and found to contain 16.4 percent water. If the anhydrous salt has a formula mass of 183 amu, find the water of crystallization (X) for the hydrate. I have no idea how to figure this out! HELPP PLEASE!!

*January 23, 2011*

**Chemistry**

How do you find the molar mass of HBr?

*January 9, 2011*

**Geometry**

the answer in the book says 8 sqrt of 2. i don't know how to solve it though

*January 9, 2011*

**Geometry**

The sum of the squares of the measures of the sides of a square is 256. Find the measure of a diagonal of the square.

*January 9, 2011*

**Geometry**

The diagonals of a rectangle are 12 inches long and intersect at an angle of 60 degrees. Find the perimeter of the rectangle.

*January 9, 2011*

**geometry**

thanks!

*January 9, 2011*

**geometry**

the length of a diagonal of a square is 22 square root of 2 millimeters. Find the perimeter of the square.

*January 9, 2011*

**us history**

what do u mean by it has diversified our culture and what is an cause and effect for mirgration

*October 28, 2010*

**us history**

my question is on north americans mirgation it says explain one way that mirgration affects us today? then my next question says give one cause and effact of the mirgration of the frist americans?

*October 28, 2010*

**math**

how to dived fraction

*October 26, 2009*

**math**

how to dived fraction

*October 26, 2009*

**2nd Grade Science**

Some objects and ____________ things move quickly. What is the answer to fill-in the blank.

*April 30, 2008*

**math**

im doing percent proportions and it is asking: 57% if 109 is what number? And i already know that you start with 57/100 = x/109 but how do you get the answer, i cant figure it out!!!

*October 2, 2007*