# Posts by krystal

Total # Posts: 302

**science**

need to make a silent proof box 15,000 cubic centimeters. What is the dimensions? I am having a hard time figuring it out.

*April 9, 2016*

**Social Studies**

Just completed the same quiz, and you are right on all questions. Good job.

*December 18, 2015*

**Social Studies**

i would give them 1.=5 points and the second one 4 points you need to add more detail not trying to be mean.

*September 28, 2015*

**science**

titanium reacts with oxygen a chemical change or a physical change

*September 27, 2015*

**Science PLEASE HELP**

right

*September 27, 2015*

**Science PLEASE HELP**

All matter can be classified into two categories: pure substances and mixtures. A pure substance consists of a single element or compound. Iron is formed only of iron (Fe) atoms; table salt is formed only of sodium chloride (NaCl) molecules. A mixture, however, is made up of ...

*September 27, 2015*

**Business Managment**

UPDATE on some of my answers 1.B 3.D 6.A 7.D 8.C 10.D 13.D 16.B 18.A

*September 9, 2015*

**Business Managment**

I just want to know if these are right and if not, which ones I got wrong. 1.Based on a _______ statement, a company sets long-term _______ mutually agreed on by workers and management and, from these, sets specific, short-term _______. A. vision; goals; objectives B. mission...

*September 9, 2015*

**algebra**

what is the reciprocal of 5/x-1 + 3/x ?

*September 1, 2015*

**english**

Créez une histoire/conte de MAXIMUM 75 MOTS. Je veux que le theme principal soit l'été! Create a history/tale of MAXIMUM 75 WORDS. I want that the principal topic is the summer

*July 10, 2015*

**english**

yes

*July 10, 2015*

**english**

Im not sure...

*July 10, 2015*

**english**

If i wanted to write a history of summer.. how would i start it

*July 10, 2015*

**Finite Math**

Yes, thank you Damon for your help with this. Hope you had a great 4th of July. Krystal

*July 2, 2015*

**Finite Math**

State and perform the next elementary row operations that should be performed to put the matrix in diagonal form 1 2 -3 3 2 -4 6 8 3 6 15 12

*July 2, 2015*

**Math**

Use the table below to answer the following question. x: 1, 2, 3, 4 y: 1, 4, 9, 16 Which is NOT true about the above table? A: It shows a linear function. B: The variable x increases by 1 each time. C: The rate of change is not constant. D: The variable y increases by a ...

*May 12, 2015*

**6th grade math**

Wait... So you can answer everything but a simple question? You should be able to figure this out! C'mon.. Grab a paper. Put it like this 180 - 50.7 _______ And Start solving

*April 15, 2015*

**math**

Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x) = -5x^2 + 21x. The cost function C(x) = 2x + 10 is the cost of producing the shorts. a) How many pairs of shorts must the company sell in order to break even

*March 22, 2015*

**Physics**

3. An 80 kg skier is skiing down a slope (assume its frictionless) as shown in the diagram. The skier then hits a patch of sandy snow that applies a constant frictional force of 320 N directed up the slope. a. What is the skiers acceleration before hitting the sandy snow? b. ...

*January 27, 2015*

**Math**

Sorry, the first question should be y = -x^3 + 2

*January 24, 2015*

**Math**

Hi! Can you check my answers to this worksheet? They're the only questions I'm not positive about my answers on. 1. Compared to its parent function, describe the transformation of the following: y = -x3 + 2 A. Reflected with respect to x-axis, moved up 2. B. Reflected ...

*January 24, 2015*

**grade 7 math**

Uniform Motion Related Problem Port A is 25 km downriver from port B. At noon a tugboat leaves port B and travels upstream at 15 kph. At 3 p.m. a hyrodrofoil leaves Port A travelling upstream at 50 kph. At what time will the hydrofoil pass the tugboat?

*January 19, 2015*

**grade 7 math**

Uniform Motion Related Problem Jessie has a 15 km head start on Melvin. How long will it take Melvin to catch Jessie if the latter travels at 70 kph and the former at 100 kph?

*January 19, 2015*

**grade 7 math**

Uniform Motion Related Problem Two planes leave an airport at 2 p.m., one flying south at 450 kph, the other flying north at 675 kph. At what time will they be 3 600 apart?

*January 19, 2015*

**grade 7 math**

Uniform Motion Related Problem Two cars starting from the same point travel in opposite directions. Car A travels at 80 kph and car B at 110 kph. After how many hours will the cars be 760 km apart?

*January 19, 2015*

**grade 7 math**

Uniform Motion Related Problem Two cars, 210 km apart, met each other in 2 hours. If one car travelled at 60 kph, at what rate did the second car travel?

*January 19, 2015*

**grade 7 math**

Uniform Motion Related Problem Chester drove his car at 8:00 a.m. at speed of 45 km/hr. At 9:15a.m. Michael followed with his car. What should be Michael's speed so as to be able to overtake Chester at 1:00 p.m.? How far has Chester travelled when Michael overtook him?

*January 19, 2015*

**grade 7 math**

Uniform Motion Related Problem A car travelling at 60 kph left town at 9:00 a.m. Another car travelling at 65 kph left the same place half an hour later to overtake the first. At what time did the second car overtake the first?

*January 19, 2015*

**grade 7 math**

Uniform motion Related Problem Five boy scouts biked to Caliraya lake at 5 km/h. their scout master gave them a ride back home in his pickup car, at 20 kph. Find the hiking time if it 6 hors longer than their riding time.

*January 19, 2015*

**English**

Yes you are correct.

*November 6, 2014*

**International Law**

Hello, I am having a hard time in finding the prosecutors list of evidence in the The Prosecutor v. Callixte Mbarushimana case. I have read documents but it doesn't give a detail of the evidence submitted. Can you please help. Thank You

*October 22, 2014*

**International Law**

Hello, I am having a hard time in finding the prosecutors list of evidence in the The Prosecutor v. Callixte Mbarushimana case. I have read documents but it doesn't give a detail of the evidence submitted. Can you please help. Thank You

*October 22, 2014*

**physics PLEASE HELP**

Add the two component vectors from Sample Problem 1 algebraically to erify that they equal the given vector The two component vectors are: 8.6m(North) and 12m (west) The given vector is 15m(West 35 degrees North)

*September 30, 2014*

**Physics please help**

An ant travels 2.78 cm (West) and then turns and travels 6.25cm (south 40 degrees East). What is the ant's total displacement?

*September 29, 2014*

**Biology**

What happens to arterial PO2, PCO2, and H+ concentration during moderate excercise? How and why does this stimulate an increase in breathing rate?

*September 8, 2014*

**Civics**

Which best describes how the internet has contributed to cultural diffusion in the united states?

*April 18, 2014*

**Psychology**

independent variables

*February 26, 2014*

**Math**

What you need to do is CALM DOWN.. THINK RATIONALLY.. Idiot..

*February 13, 2014*

**Algebra 2**

Okay, so if the directions say describe the pattern, is that all I would put?

*February 12, 2014*

**Algebra 2**

How would you describe the pattern of this sequence? 2/3, 4/4, 6/5, 8/6, 10/7 The formula is 2n/n+2 where n is 1, 2, 3, 4, 5

*February 12, 2014*

**Biology**

Can someone please help me find a website? I am doing a project on Maple Syrup Urine Disease and need to find a website that says when the disease was first discovered or how long we have known about it.

*February 11, 2014*

**Math**

Find the largest positive integer that leaves the same remainder when divided into each of 889, 961, 1009, and 1189

*February 7, 2014*

**Math**

I mean Show that the equation 155x -465y=35has no integer solutions

*February 7, 2014*

**Math**

Show that the equation 155x -465y 35 has no integer solutions

*February 7, 2014*

**Math**

A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors

*February 7, 2014*

**Math**

Find the largest positive integer that leaves the same remainder when divided into each of 889, 961, 1009, and 1189

*February 7, 2014*

**Math**

In how many ways is it possible to spend exactly $200 on pumpkins if large pumpkins cost $5 and small $3

*February 7, 2014*

**math**

Value ways 2 3/5 miles each day.Bill runs 10 miles once every 4 days. In 4 days, who covers the greater distance?

*February 5, 2014*

**Computer Programming**

Professor Merlin has asked you to help him. He has 100 total students in his four classes but he is not sure that all of them took his last exam. He wants to average the grades for his last exam in all four sections of his medieval literature course and then determine how many...

*January 29, 2014*

**Math**

Let c be a constant. For what values of c can the simultaneous equations x – y = 2; cx + y = 3 have a solution (x, y) inside quadrant I

*January 17, 2014*

**Science?**

I'm doing a science experiment where I have to light an object on fire to do the experiment.. It can't be oil or electrical fire. So I need some objects I can light on fire. Such as a candle. But I can't use this one

*January 16, 2014*

**8th Grade Connections Academy**

OK.. Listen.. I know for a fact because my kids are in Connections Academy, and I caught my kids using this. This isn't a very realiable resource to use. OK? The Honor Roll says when you have a problem, go to your learning coach, review your notes, and then maybe go to ...

*January 8, 2014*

**Chemistry**

A gas, Y, diffuses 1.05 times faster than SO2 gas at the same conditions. What is the molecular weight of gas Y?

*December 3, 2013*

**world history**

what are city states?

*November 7, 2013*

**world history**

list three environmental challenges facing the acient people of mesopotamia.

*November 7, 2013*

**Accounting**

The owner's equity of Logan's company is equal to one quarter of the total assets. Liabilities equal $60,000. What is the amount of owner's equity?

*October 14, 2013*

**Algebra 2**

Well its actually her computer.

*October 9, 2013*

**Algebra 2**

I did post the other question under the name Charlie though because I don't like to use my name as much.

*October 9, 2013*

**Algebra 2**

At the ruins of Caesarea, archaeologists discovered a huge hydraulic concrete block with a volume of 945 cubic meters. The block's dimensions are x meters high by 12x - 15 meters long by 12x - 21 meters wide. What is the height of the block? Can someone please show me how ...

*October 9, 2013*

**Algebra 2**

How do you get the real-number solutions of 5b^3 + 15b^2 + 12b = -36? I get to (b+3)(5b^2 + 12) and I don't know what to do after that. Can someone please show me how to finish this problem?

*October 9, 2013*

**Geography**

Thank you, it is a good website for what I need.

*October 7, 2013*

**Geography**

Does anyone know a good website that shows South American countries natural resources in detail?

*October 7, 2013*

**Geography**

Do you also know a good website that shows natural resources in South America?

*October 7, 2013*

**Geography**

I need a map of South America countries that shows their mineral deposits in details. Can someone please give me a website?

*October 7, 2013*

**Definitions**

I have looked and looked for 4 examples of a standalone computer but I have only found two. They are a fax machine, and TiVo box. Could someone please tell me what two more examples are?

*October 3, 2013*

**Algebra 2**

For the equation y<or equal to -x^2+3x+10 I got the vertex (3/2, 67/4). Is this right?

*September 25, 2013*

**Algebra 2**

A stunt motorcyclist makes a jump from one ramp 20 feet off the ground. The jump between ramps can be modeled by y= -1/640x^2 + 1/4x +20 where x is the horizontal distance (in feet) and y is the height above ground (in feet). I think a is 20 feet, but I don't know how to ...

*September 24, 2013*

**Algebra 2**

How do you get 50000?

*September 24, 2013*

**Algebra 2**

For the period 1990-2002, the number s (in thousands)lf cellular telephone subscribers in the United States can be modified by S=858t^2 + 1412t + 4982 where t is the number of years since 1990. In what year did the number of subscribers reach 50 million? The choices are the ...

*September 24, 2013*

**algebra 2**

How would you solve 3x^2+8x-91=0 and 9r^2+4r+2=0 using the quadratic formula?

*September 23, 2013*

**English**

Thank you!

*September 19, 2013*

**English**

What are the common nouns in these sentences? I think I have them right but I'm not sure. 1 is zone. 2 is steamboat. 3 is sister 4 is cross, and crossings. 5 is brother and animals. 6 is beavers and people 7 is voyage and world. It would be greatly appreciated if someone ...

*September 19, 2013*

**Computer Definitions**

What is broadband Internet Connection?

*September 17, 2013*

**7th Grade**

Well my school is soo boring we lern about stupid stuff like pirid and all or that.

*September 16, 2013*

**Algebra 2**

I got 105 meters by taking p=52.5 and adding q=52.5. Is 105 meters the width?

*September 4, 2013*

**Algebra 2**

The arch of the Gateshead Millennium Bridge forms a parabola with equation y=-0.016(x-52.5)^2+45 where x is the horizontal distance(in meters) from the arch's left end and y is the distance (in meters)from the base of the arch. What is the width of the arch?

*September 4, 2013*

**Algebra 2**

So that's how far it has to jump and y is how high it can jump from that point to the fence?

*September 2, 2013*

**Algebra 2**

What does the horizontal position mean?

*September 2, 2013*

**Algebra 2**

A woodland jumping mouse hops along a parabolic path given by y=-0.2x^2+1.3x where x is the mouse's horizontal position (in feet) and y is the corresponding height (in feet). Can the mouse jump over a fence 3 feet high? Explain. I know that x is 3.25 and the mouse's ...

*September 2, 2013*

**Algebra 2**

Thanks

*September 2, 2013*

**Algebra 2**

I'm using the formula -b/2a for the function9x^2+7. So I would get -0/2(9) which equals -0/18 and the final result is 0.

*September 2, 2013*

**Algebra 2**

So if I put 0 in a b I would get 0/18 which equals 0 for x?

*September 2, 2013*

**Algebra 2**

I need to find the vertex of the parabola y=9x^2+7 but I am confused on what to use for b. I know a=9 but am unsure if b=7. Does b=7?

*September 2, 2013*

**Algebra 2**

I need to find x of the quadratic function y=-5/3x^2-x-4. I'm supposed to use the formula x=-b/2a. The negative sign only applies to b. A=-5/3 and B=-1. When I substitute these values in I get -(-1)/2(-5/3). After working this out I get 1 over -10 over 3(1)/(-10/3). after ...

*September 2, 2013*

**Algebra 2Please Help**

I need to find x of the quadratic function y=-3/4x^2-4x-1 and keep getting (4)/(3/2). Is this right and if so, can it be reduced?

*September 1, 2013*

**Algebra 2**

I need to find x of the quadratic function y=-3/4x^2-4x-1 and keep getting (4)/(3/2). Is this right and if so, can it be reduced?

*September 1, 2013*

**Algebra 2**

I need to find x of the quadratic function y=-3/4x^2-4x-1 and keep getting (4)/(3/2). Is this right and if so, can it be reduced?

*September 1, 2013*

**Introduction to Physical Science**

Hello, I always thought that sound was to loud when it hurts our ears or when sound vibration can make extremely loud noises. I am stuck on the following question: How loud is too loud? When is a sound too loud? What can be done about sounds/noises that are too loud for you?

*August 19, 2013*

**algebra**

Create your own quadratic equation that has an axis of symmetry of x = −1 and whose graph opens down. Then find the vertex, domain, range, and x-intercepts. Show all work to receive full credit.

*August 14, 2013*

**writing process part 1**

Its just a to be a 8 sentence paragraph that fully develops the topic (a high school diploma is important to my future.) I need it proof read for mistakes and need to know if it fully develops that topic.

*June 18, 2013*

**writing process part 1**

I need this paragraph proof read if that's OK. also need to know if it's a fully devolved the topic a high school diploma is important to my future. A high school diploma is important to my future for a number of reasons. The First being to attend college it is ...

*June 18, 2013*

**POL201**

Under the “necessary and proper” clause, Congress may

*May 29, 2013*

**chemistry**

What are [H+] and [OH-] for 0.01 M perchloric acid

*May 15, 2013*

**Chemistry**

0.1 mol of HCl is added to 1 L of water. What is [H+] and [OH-]?

*May 14, 2013*

**PHI103**

If I move to Texas, I will need air conditioning. I don't need air conditioning. So I didn't move to Texas" is an argument form known as

*April 8, 2013*

**chemistry**

How many moles of hno3 neede to prepare 7.5 l of a 5.6m solution

*March 19, 2013*

**physics**

if Royce was 10 years old and he had a mass of 30kg. but by the time he turned 16 his mass has grown to 60kg. how much larger is the gravitational force between Royce and earth at age 16 compared to age 10

*March 11, 2013*

**math**

i think it is 8

*January 14, 2013*