# Posts by Katherine

Total # Posts: 579

**Math: equations**

Samantha has triple the number of braclets as Ruth. Ruth has x braclets. All together, they have 48 braclets. Find the value of x.

*March 16, 2017*

**Math Statistics **

"In the United Kingdom's Lotto game, a player picks six numbers from 1 to 49 fir each ticket. Rosemary brought one ticket for herself and one for each of her four adult children. She had the lottery ticket. When the sic winning numbers were drawn, Rosemary was ...

*February 7, 2017*

**Physics**

A car is backing up at a rate of 10km/hr. If the driver looks through his rear-view mirror, how fast does a tree, which is behind him, appear to approach him?

*October 27, 2016*

**SS**

How is the number of Electoral College seats per state determined? (1 point) by the number of party delegates assigned to the state by the total number of House and Senate representatives by the traditional number assigned under the 12th Amendment by giving each state two ...

*October 5, 2016*

**Science**

Give me the answer pleaseeeeeeeeee i rally have to know it I just have this one question :( ... I know the answer but I don't know how to solve it . 😔

*September 10, 2016*

**Science**

If a ball is thrown upward on Mars with an initial velocity of 10.0 m/s and lands 1.50 m below its launch point 5.54 seconds after it is thrown , what is the local acceleration due to gravity one Mars .... Plzzzzzzzzz answer it's really important I have to submit it ...

*September 10, 2016*

**Physical science**

To pass a slow vehicle within the length of the passing lane roger got up well over the speed limit . He then spotted a police cruiser coming around the corner and hit the brakes . If he braked at 6 m/s^2 , and it took him 1.50 seconds to get back to 40 m/s , what speed had he...

*September 10, 2016*

**Algebra**

True or false? Negative numbers are closed under addition. Give a counterexample True or false? Prime numbers are closed under subtraction. Give a counterexample True or false? Natural numbers are closed under division. Give a counterexample

*August 15, 2016*

**math**

ohhhhhhhh thank you so much but yeah i was wondering too because there was no negative signs but i think there was a typo

*August 12, 2016*

**math**

So i was going over a problem that i didn't understand which is What is the slope of the function described in the table below? x I y 0 | -3 2 | -2 4 | -1 6 | 0 the choices were f) -3 g) 1/2 h) 2 J) 3 i know that the answer is g because my family told me but i don't ...

*August 12, 2016*

**Ela**

Thank you so much(:

*August 9, 2016*

**Ela**

i have searched and there was barley articles with 1000 words or more and i cant go on new york times because im not allowed to pay .. please help me

*August 9, 2016*

**Ela**

I need an article that's local (new york city) and it has to have at least 1000 words and published in a major newspaper. Can someone help me find an article?

*August 9, 2016*

**Math**

Which of the following is equivalent to the expression 8 to the -5 power times 8 to the second power A) 1/8 to the 7 power B) 1/8 to the 3 power C) 8 to the 3 power D) 8 to the 7 power I was in between b and c but im pretty sure its c is it?

*August 8, 2016*

**Chemistry**

How much solid ammonium chloride would be needed to make 100 mL of a 0.5M solution?

*May 18, 2016*

**Math (please help)**

Damon is wrong.

*April 29, 2016*

**Chemistry**

1209

*April 18, 2016*

**Language Arts**

I think its A because it had 3 dependent clauses into one sentence, like my mom cant stand alone. A dependent clause is a clause that cannot stand alone. And just so you know I am not guessing, I am really trying to get this i just don't quite understand

*March 10, 2016*

**Language Arts**

Please Reed I think its A i think i got it i just need this please

*March 10, 2016*

**Language Arts**

Which of the following sentences contains a dependent clause? a) my mother, who never wastes anything, rinsed and saved the take-out boxes b) we were running late and, we had to skip stopping by the post office. c) I had never been to New York before this spring d) you should ...

*March 10, 2016*

**Language Arts**

UNder A SPREADing CHESTnut tree capital letters = stressed is this right?

*March 10, 2016*

**Language Arts**

My mother, and who never wastes anything

*March 10, 2016*

**Language Arts**

Okay, now I get it, so its A

*March 10, 2016*

**Language Arts**

okay, I think I understand. So would it be D then? Because it doesn't have a lot of details? And thanks for helping

*March 10, 2016*

**Language Arts**

Which of the following sentences contains a dependent clause? a) my mother, who never wastes anything, rinsed and saved the take-out boxes b) we were running late and, we had to skip stopping by the post office. c) I had never been to New York before this spring*** d) you ...

*March 10, 2016*

**Algebra 1**

1. A company is deciding whether or not to hire a new worker. The company must pay the worker hourly and cover a daily cost for insurance. The cost to pay an hourly worker for one day is represented by the function y = 8x + 25, where x is hours. What is the y-intercept, and ...

*March 8, 2016*

**4th grade math**

I am really not sure but I think it's $135

*March 3, 2016*

**Math**

Viifodososmjdj

*March 3, 2016*

**Math**

😆😆😆😆😆😷😐👺👺👹🙉🙉🙈😾🙉🙈👨🙈💩💩💩

*March 3, 2016*

**Language Arts**

Thank you so much!

*March 2, 2016*

**Language Arts**

thank you so much, how did you get that?

*March 2, 2016*

**Language Arts**

What is the pattern of stressed and unstressed syllables in this line: The sun should drop its greatest gold

*March 2, 2016*

**math**

The classroom has 4 desk each row. there are 5 rows. how many desk are there in the classroom.

*January 7, 2016*

**Math**

Which statement is true? A. Every rational number is a square root. B. Every irrational number is a fraction. C. Every rational number can be written as a fraction. D. Every square root can be written as a whole number I go with C

*November 12, 2015*

**Spanish**

Wow that was no help Ms.Sue

*November 6, 2015*

**Spanish**

She is pretty confusing and is not helpful

*November 4, 2015*

**math**

i have nothing done

*October 14, 2015*

**chemistry**

How many grams of lithium hydroxide are needed to remove 920 g of carbon dioxide in the air

*August 27, 2015*

**math**

At a popcorn factory, for every kilogram of popcorn that is popped, 100 grams are not popped. The factory pops 5 kilograms every day. What is the total weight in kilograms, of the unpopped corn in the month of april?

*August 20, 2015*

**ELA**

Do you guys know what unit and lesson it was because I'm on that but I don't remember doing it and I can't find it. @(OKCthunder)

*May 21, 2015*

**chemistry**

Thank you for your answer. Why we do not use mull or thin-solid film method for this one?

*April 26, 2015*

**chemistry**

please help !!! You are given an organic solid which reacts with most organic solvents. How would you obtain the IR spectrum of it?

*April 26, 2015*

**AP Chemestry**

Ah! That would explain it. Silly oversight on my part, sorry about that. K is defiantly in units of hours^-1, so that must be the correct choice. I'll check in with my teacher specifically tomorrow to see why the question ended up that way. Thanks a ton for the help, I'...

*April 21, 2015*

**AP Chemestry**

Sorry for the late reply! Units for the constant are grams per liter (molar). Both answers A and B were exactly the same, so I assume there must have been a printing error, or something or the sort. As for my work, I inserted the info given into the equation and solved from ...

*April 21, 2015*

**AP Chemestry**

(Alright, third attempt here. My replies keep being eaten) I inserted my givens into the equation, ' Natural-log At/Ao = negative constant multiplied by the time passed '. However, my answer isn't close to the choices. Any help would be appreciated!

*April 21, 2015*

**AP Chemestry**

Whoops, somehow I managed to mess that up. Here's the rest of my question The question is as follows: Find the initial concentration of a sucrose solution that has a current concentration of 3.45 molar after 2 hours and 30 minutes at 25°C. For this reaction at 25°C...

*April 21, 2015*

**AP Chemestry**

The question is as follows: went wrong, I'd really appreciate it!

*April 21, 2015*

**physics 1**

444g mass vibrates according to the equation x = 0.348 sin (5.82 t) where x is in meters and t is in seconds. Determine the total energy. Determine the kinetic energy when x is 14.0cm. Determine the potential energy when x is 14.0cm.

*December 13, 2014*

**physics 1**

will G be 6.67*10^(-11)

*December 12, 2014*

**physics 1**

what would I use for r and M?

*December 12, 2014*

**physics 1**

Two isolated masses, M1 = 2.20 kg and M2 = 589 kg are initially rest, a distance d= 161 cm apart. Their gravitational attraction is the only force acting. Calculate the time it takes for M1 to move from that distance to 159 cm from M2. Assume that M2 does not move and that the...

*December 12, 2014*

**Physics**

A bullet of mass m= 2.50×10-2kg is fired along an incline and imbeds itself quickly into a block of wood of mass M= 1.60kg. The block and bullet then slide up the incline, assumed frictionless, and rise a height H= 1.45m before stopping. Calculate the speed of the bullet...

*December 12, 2014*

**Chemsitry**

What courses should you take in each grade 9,10,11,12 to help you become a pharmacologist. i need courses for each grade

*December 11, 2014*

**Biology**

what is the vascular system of the lilac flower. i tried finding some sites. some sites would help me. PLease!

*December 5, 2014*

**biology**

Describe the vascular system and functions of each component of the Lilac flower i tried to find some sites, but i cant find in any. So any sites would help as well

*December 3, 2014*

**Please help Damon**

thank you!

*December 1, 2014*

**Please help Damon**

need help on a lab here are the results Mass of empty beaker and glass rod(62.62) Mass of beaker, glass rod, hydrated copper sulfate(66.02) Mass of beaker, glass rod and anhydrous copper sulfate(65.04) Mass of hydrated copper sulfate(3.4) Mass of anhydrous copper sulfate(2.42...

*December 1, 2014*

**SpanishiA**

Hola! For 4 ma man it would probably be C (Estan) because when you did the lesson in the English to Spanish words it described the word Estan as and I quote, "they/you (plural) are." This is because the sentence subject is talking about the people in the car. And in ...

*November 19, 2014*

**Chemistry 11**

Actually, I made a mistake in my previous question & fixed it, additionally I looked at the link he gave me and didn't find it useful. I appreciate Bob Pursley taking the time out of his day to help me with this problem but I didn't quite grasp what he was getting at. ...

*November 18, 2014*

**Chemistry 11**

So I did a lab determining the chemical formula of a hydrate. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. My observation table looks like this: Mass of clean, dry test tube: 21.6g Mass of test tube + hydrated copper (2) sulphate: 24.1...

*November 18, 2014*

**Chem 11**

Would the answer somehow differ if I had different amounts than the person on the link you posted?

*November 18, 2014*

**Chem 11**

So I did a lab determining the chemical formula of a hydrate. I really just need somebody to check this over for me. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. My observation table looks like this: Mass of clean, dry test tube: 21.6g...

*November 18, 2014*

**physics**

If each of the three rotor helicopter blades is L = 3.69m long and has a mass of m = 159kg, calculate the moment of inertia of the three rotor blades about the axis of rotation.

*November 11, 2014*

**physics**

what would the units be?

*November 11, 2014*

**physics**

The distance between a hydrogen atom (m = 1.0u) and a chloride atom (m = 35.5u) in the HCl molecule is 1.27×10-10m. How far from the hydrogen atom is the center of mass of the molecule?

*November 11, 2014*

**Chemistry**

A generic solid, X, has a molar mass of 77.7 g/mol. In a constant-pressure calorimeter, 31.2 g of X is dissolved in 289 g of water at 23.00 °C. The temperature of the resulting solution rises to 24.40 °C. Assume the solution has the same specific heat as water, 4.184 J...

*November 2, 2014*

**physics**

Displacement vectors A,B,and C add up to a total of zero. Vector A has a magnitude of 1550 m and a direction of 24.1° north of east. Vector B has a direction of 41.0° east of south, and vector C has a direction of 33.4° north of west. Find the magnitudes of vector ...

*October 30, 2014*

**HEALTH**

The heart is a _____ that provides the force necessary to circulate the blood to all the tissues in the body. A. Skeletal pump B. Autonomous pump C. Muscular pump D. Systemic pump My answer would be C. i think that's right...

*October 8, 2014*

**physics**

What is the acceleration of a car going from 3.0 x 101 km/hr to 1.20 x 102 km/hr in 3.0 x 101 sec?

*October 3, 2014*

**health**

Its D. i believe

*September 23, 2014*

**Aviation #2**

what accident investigation / forensic methods are used in aviation?

*August 25, 2014*

**Aviation**

What procedures and / or methods are recognized within the Aviation industry?

*August 25, 2014*

**Investigation Domain Contexts**

What procedures and methods are prescribed/recommended in the Aviation domain?

*August 25, 2014*

**science**

Air pressure at the surface of a fresh water lake near sea level is about 10^5 N/m2. At approximately what depth below the surface does a diver experience a pressure of 3.0 e5 N/m2?

*July 1, 2014*

**science**

A 444g mass vibrates according to the equation x = 0.348 sin (5.82 t) where x is in meters and t is in seconds. Determine the total energy. Determine the kinetic energy when x is 14.0cm. Determine the potential energy when x is 14.0cm.

*May 1, 2014*

**Math**

Kaylee got a 15% raise. She now earns $23 an hour. How much did she earn before the raise?

*April 12, 2014*

**Math**

What is the maximum value of the function y= 18/x^2-9 over the interval -3<x<3? A. 0 B. 2 C. -2 D. Infinity

*March 30, 2014*

**Science**

Which statement summarizes water quality issues in China

*March 24, 2014*

**Chemisty**

a)What is the [Ca2+] when 100mL of .05M CaCl2 is added to 100mL of .10M K2SO4? b) What is the [SO42-] for part a? c) write the Ksp expression for CaSO4 d)Will a precipitate form in the solution from part a)?

*March 20, 2014*

**Math**

What is 3/8=4m-2 over _____ 12

*March 20, 2014*

**history**

Thanks for the help :)

*March 6, 2014*

**history**

So, it will be A then.

*March 6, 2014*

**history**

During the 1950s, the advent of _______ created the largest and fastest-growing impact on American society. A. television. B. suburban communities C. educational reform D. fundamentalist religion. I think it's D. Am I correct?

*March 6, 2014*

**science**

Wrong... MA of inclined plane = 20m/1.2m = 16.67 &the rest idk.

*February 16, 2014*

**Math**

Tiffany bought 2/5 kg of cherries. Linda bought 1/10 kg of cherries less than Tiffany. How many kg of cherries did they buy altogether?

*January 22, 2014*

**Math**

Express fraction 9/4 as the sum of two or three equal parts. Rewrite the problem as a multiplication equation.

*January 9, 2014*

**algebra 1**

parallel and perpendicular lines write the slope-intercept for an equation of the line that passes through the given point and is perpendicular to the graph of each equation (4-2) y=1/2 +1, ( 2,-3) y= -2/3+4 (-8,-7) y=-x-8 (6,-2) y=-3x-6

*January 9, 2014*

**Chemistry**

A reaction: A(aq) + B(aq) <-> C(aq) has a standard free-energy change of –4.65 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively? Im not...

*November 24, 2013*

**Chemistry**

Silver chromate is sparingly soluble in aqueous solutions. The Ksp of Ag2CrO4 is 1.12× 10–12. What is the solubility (in mol/L) of silver chromate in 1.4 M potassium chromate aqueous solution? In 1.4 M silver nitrate aqueous solution? In pure water?

*November 12, 2013*

**Chemistry**

The Ksp of CaSO4 is 4.93× 10–5. Calculate the solubility (in g/L) of CaSO4(s) in 0.300 M Na2SO4(aq) at 25 °C

*November 12, 2013*

**human resource**

please help me with my assignment? The company has seven department stores in your city. One of your biggest problems is adequately training new salesclerks. 1. Design a three-day orientation/training program for new salesclerks. to be used. 2. Specify what methods could be ...

*October 15, 2013*

**human resource**

The company has seven department stores in your city. One of your biggest problems is adequately training new salesclerks. 1. Design a three-day orientation/training program for new salesclerks. to be used. 2. Specify what methods could be used to evaluate the success of the ...

*October 15, 2013*

**Need Help with Math?**

1. Translate P(4,0) right 3 units and up 5 units. Give the coordinates of the image point. (-5,1) (1,-5) (5,7) (7,5) 2. Point A(6, -2) is reflected over the x-axis. Write the coordinates of A'. 6,2 6,-2 -6,2 -6,-2

*October 11, 2013*

**Chemistry**

I was able to figure it out! Thank you very much for your help(:

*September 30, 2013*

**Chemistry**

I don't know what to do after I set up the Kc equation. How do you isolate x from 1.80=(x^2)/(.062-x)

*September 30, 2013*

**Chemistry**

Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C A 0.206 mol sample of PCl5(g) is injected into an empty 3.30 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and ...

*September 30, 2013*

**Math**

Shelly compared the number of oak trees to the number of maple trees as part of a study about hardwood trees in a woodlot. She counted 9 maple trees to every 5 oak trees. Later in the year there was a bug problem and many trees died. New trees were planted to make sure there ...

*September 19, 2013*

**health**

D. and a normal schedule for food is three meals a day and trying to eat them at the same time every day ;)

*September 18, 2013*

**Math Help? Check my answers.**

So it would be 3 and not 5?

*August 20, 2013*