Friday

December 9, 2016
Total # Posts: 935

**Chemisty**

2C2H6(g) + 7O2(g) = 4CO2(g) + 6H2O(g) How many L of oxygen gas is needed to produce 18.0 L of CO2

*November 23, 2016*

**Grade 11 Physics**

Megan and Catrina are at a playground swing set. Catrina pulls Megan back so that the 2.5 m long chain makes a 35? angle with the vertical. She pushes her with a speed of 6.5 m/s and Megan begins to swing forward. a) What is Megan’s fastest speed? b) How fast is Megan ...

*November 16, 2016*

**Physics**

Robert constructs the apparatus shown and slides a block down a slope that is without friction until the block reaches the section, L, of length 1.85 m, which begins at height h2 = 2.0 m on a ramp of angle 30.0°. In that section, the coefficient of kinetic friction is 0.70...

*November 15, 2016*

**9th grade algebra (completing square)**

Thanks for checking. For the ones above, they didn't match any anwers from the homework puzzle. So, I wasn't sure I was doing them correctly.

*November 9, 2016*

**9th grade algebra (completing square)**

Can you check the following? A1. (2x + 3)^2 = 25 sqrt(2x + 3)^2 = +-sqrt(25) 2x + 3 = +- 5 2x + 3 = 5, 2x + 3 = -5 2x = 2, 2x = -8 x = 1, x = -4 {-4, 1} A2. x^2 + 14x + 45 = 0 x^2 + 14x + __ = -45 + __ x^2 + 14x + 49 = -45 + 49 (x +7)^2 = 4 sqrt(x+7)^2 = +- sqrt(4) x + 7 = +- ...

*November 9, 2016*

**9th grade algebra (factoring with quadratic)**

Can you check the following problems? 4. x^2 - 10x +25 = 9 x^2 - 10x + (25 -9) = 9 - 9 x^2 - 10x + 16 = 0 (x - 8)(x-2) = 0 x - 8 = 0, x - 2 = 0 x = 8, x = 2 5. x^2 - 6x + 9 = 49 x^2 - 6x + ( 9 - 49) = 49 - 49 x^2 - 6x - 40 = 0 (x -10)(x + 4) = 0 x - 10 = 0, x +4 = 0 x = 10, x...

*November 1, 2016*

**9th grade algebra (factoring)**

thanks for checking!!

*October 27, 2016*

**9th grade algebra (factoring)**

Can you check the following problems? Factor the following. 1. x^2 + 9x + 18 = (x + 6)(x + 3) 8. 3x^3 - 24x^2 - 60x = 3x(x^2 - 8x - 20) = 3x(x-10)(x + 2) 9. 5x^4 - 5x^3 - 30x^2 = 5x^2(x^2 - x - 6) = 5x^2(x - 3)(x + 2) 10. 6x^2 - x - 2 = (x - 4/6)(x + 3/6) = (x -2/3) (x +1/2...

*October 27, 2016*

**Physics**

In the figure, a 6-kg box is sliding up an incline that makes an angle of theta=30 degree (with respect to the horizontal). As it slides up the incline, a kinetic frictional force fk acts on it. The acceleration of the block has magnitude 8 m/s2. Let the x+ direction point up ...

*October 19, 2016*

**Math**

What is 10 times as much as 700 will be 7,000

*October 4, 2016*

**math**

What equation is equivalent to 24=ax+4y-10, when solving for y? A: y=7/2-ax/4 B: y=17/2-ax/4 C: y=17- ax/4 D: y=34- ax

*September 18, 2016*

**Calculus 2**

A culture of bacteria is growing at the rate of 20e^0.8t cells per day, where t is the number of days since the culture was started. Suppose that the culture began with 50 cells. (a) Find a formula for the total number of cells in the culture after t days. (b) If the culture ...

*September 18, 2016*

**9th grade Spanish 1**

Thanks!

*September 15, 2016*

**9th grade Spanish 1**

Can you check my answers regarding direct object pronouns? I had to fill in a chart (D.O.P for English and Spanish and use of D.O.P with gustar and ar ending verb) and not sure about the answers. Eng....Span...DOP + gusta + infinite(ar ending verb) me.....me.....me gusta ...

*September 15, 2016*

**Math **

-I am 2 digit number. -The digit in the ones place is the first odd prime number -The digit in the tens place is three times the value of the ones place digit I am ____

*September 13, 2016*

**science **

i want to know the density of a golden nugget . the nugget i found had a mass of 120 g and took up a space of 6 mL . what is the density ?

*September 12, 2016*

**9th grade algebra**

Can you explain how to find the solutions to the following system of equation problems? Graph f(x) and g(x) to find the solution to the equation f(x) = g(x). Approximate the answer when necessary. 1. f(x) = -2/3x +4 and g(x)= x - 6 Ans: Step1 graph lines. f(x) has y-int of 4 ...

*September 7, 2016*

**Algebra1**

Hi Steve, How do you get the rate of change of 2/3 and -3/4 for problem #4?

*September 6, 2016*

**Algebra1**

Can you check my answers? 1. Table modeling a linear relationship is shown below. What is the rate of change of nails to birdhouses? 2 birdhouses to 22 nails 3 birdhouses to 33 nails 4 birdhouses to 44 nails 5 birdhouses to 55 nails a. 55 nails per birdhouse b. 2 nails per ...

*September 6, 2016*

**9th grade algebra**

Thanks! That was so much easier :).

*August 31, 2016*

**9th grade algebra**

Evaluate the following expression given the function. function: h(x)=12/x problem: h(x) = -2 solution: -2 = 12/x. 1/12 * -2 = 12/x *1/12 (mulitply both sides by 1/12 to get x by itself. -2/12 = 1/x -1/6 = 1/x (simplified -2/12) I don't think this is right. Can you explain ...

*August 31, 2016*

**Alg 1**

Ok, thanks. That was how the problem was worded.

*August 17, 2016*

**Alg 1 **

1. Andy's sub-total at Chick-fil-A was $18.79 for several sandwiches and one sweet tea for $1.79. Write an equation. How many sandwiches did Andy buy? Not exactly sure how to solve. What i have so far which is not right: x + 1.79 = 18.79 How can i figure out how much each ...

*August 17, 2016*

**Math**

Find the coordinates of the point which is 3/5 of the way from (3, 2) to (-3, 5).

*July 7, 2016*

**Math**

Find the equation of the line through (-8, 9) with x-intercept trice the y-intercept.

*July 7, 2016*

**Math**

What is the equation of the line segment joining P(x, y) to (2, 4) and is parallel to the segment joining (-2, -1) and (6, 8).

*July 7, 2016*

**SS**

How did the Mexican-American War ignite a conflict over slavery between the North and the South?

*May 26, 2016*

**Physics **

A 50 kg student, starting from rest, slides down an 10.8 meter high water slide. How fast is he going at the bottom of the slide?

*May 24, 2016*

**Hisyory**

How are Aristotle's teachings related to the scientific method used by scientists today?

*May 21, 2016*

**reading**

According to the article, the reader can tell that __________.Joshua Haggmark probably believes that the best way to deal with droughts is to have people conserve water.Susan Jordan probably thinks that officials are more worried than they need to be about water use during a ...

*May 16, 2016*

**history**

Can someone give me links for these please? Describe the military strategy that General William T. Sherman used across Georgia and South Carolina. Explain how the strategy affected the south, as well as how southerners reacted. Explain the purpose of reconstruction. Describe ...

*May 11, 2016*

**math**

Coach Hart calculated the mean, median, mode, and range for these data. He realized that he forgot to include Louise's 11 catches in the table. If Coach Hart now includes Louise's data with the data for the other five members, which of the following statistical ...

*May 10, 2016*

**Statistics Range, Variance, and Standard Deviation**

26. Flight Data: Find the range, variance, and standard deviation. Express answers using appropriate units, such as "minutes." Refer to Data Set 15 in Appendix B and use the times required to taxi out for takeoff. Flight 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 3 3 3 3 3 3 3 ...

*May 10, 2016*

**math**

Greg and Sam ordered a pizza for lunch. Greg ate 34 of the pizza, and Sam ate 18 of the pizza. How much of the whole pizza

*May 10, 2016*

**Statistics Homework**

Political Contributions: Listed below are contributions (in dollars) made to the two presidential candidates in a recent election. All contributions are from the same zip code as the author, and the data are from the Huffington Post. Do the contributions appear to favor either...

*May 10, 2016*

**Statistics**

Years to Earn Bachelor’s Degree: Listed below are the lengths of time ( in years) it took for a random sample of college students to earn bachelor’s degrees ( based on data from the U. S. National Center for Education Statistics). Based on these results, does it ...

*May 10, 2016*

**8th grade math - system of equations**

Thanks so much! I understand the steps for #24. I see the mistake on #23.

*April 27, 2016*

**8th grade math - system of equations**

I'm not sure how to solve these. Solve using any method (substitution or elimination) 23. The sum of two numbers is 27. The larger number is three more than the smaller number. What are the two numbers? Ans: l = large; s = small l + s =27 and l = 3S 3s + s =27 4s =27 4s/4...

*April 27, 2016*

**Social Studies**

I think I might change it to women's suffrage. Could you find any links that would help with that.

*April 12, 2016*

**Social Studies**

7. Select one movement from the Progressive Era. Describe the movement and its impact reform on South Carolina. Provide details and examples that support how this movement changed South Carolina. I chose the civil right movement I just don't know how to describe it. I have...

*April 12, 2016*

**Health**

The answer is A, zero tolerance policy.

*April 7, 2016*

**Math**

3/6=1/2

*April 3, 2016*

**Math**

Victoria rolls a number cube numbered 1-6 three times. What is the probability that she will roll a 5 on each roll?

*April 3, 2016*

**Math **

There are 252 seats in an auditorium.The auditorium is divided into three equal sections. How many seats are in each section?

*March 31, 2016*

**Math**

The area of a small rectangle is 1/4 square foot. The length is 2/3 foot. What is the width, in feet, of the rectangle?

*March 31, 2016*

**8th grade lang arts**

Thanks!!

*March 30, 2016*

**8th grade lang arts**

We're studying different types of sentences. I think that the example in our notes is wrong. Example#1: After the rain, I went to the park. Ans: Labeled as simple. But, I think it should be complex. There's a similar sentence that was done in class and it was labeled ...

*March 30, 2016*

**math**

whats the last two digits of 5 to the 347 power

*March 30, 2016*

**Math**

Water flows from a faucet at a rate of 5 liters every 25 saconds. How much water will flow from the faucet in 45 saconds

*March 8, 2016*

**8th grade science**

I'm not sure what's the correct answer: 9)Which of these characteristics can only be attributed to a wave of red light? A)The energy of the wave travels in the same direction as the wave travels. B)The wave travels by vibrating the particles of the medium at a high ...

*March 7, 2016*

**8th grade math - 2way tables**

Thanks!

*March 7, 2016*

**8th grade math - 2way tables**

Can you help with this: An 8th grade class wen to to Disney World. Out of the 181 students who went to the park, 68 visited Epcot. There were a total of 127 students who visited magic kingdom and 50 of those also visited epcot. construct a two-way table to display the ...

*March 7, 2016*

**Solubility Graph in Excel**

I've done an experiment in class (completely following the guide to the letter) of a solubility experiment (the solvents being water, cyclohexane and ethanol). The unknown solid did not dissolve in the water, dissolved in the ethanol but left it just slightly cloudy, and ...

*March 6, 2016*

**8th grade math**

I need to create a scatter plot using data for Old Faithful that includes waiting time between eruptions and the duration of the eruption. It's a data frame with 10 observations on 2 variables. eruptions numeric: eruption time in mins waiting numeric: waiting time to next ...

*March 2, 2016*

**math**

that's all it says. there's nothing else there

*February 25, 2016*

**math**

Estimate. 1.) A 15% tip on a $37 bill 2.) a 19% tip on a $53 bill 3.) a 17% tip on a $23 bill

*February 25, 2016*

**SS**

How did the Radical Republican Reconstruction plan affect life in South Carolina? a) the law did not give African Americans equal protection b) the state regained the right to decide local matters c) white males who participated in the war were permitted to hold public office ...

*February 25, 2016*

**qusestion**

I think she asking for her mom because i guess

*February 24, 2016*

**qusestion**

I'm asking for my mom she a teacher

*February 24, 2016*

**History**

Yes D. is right

*February 24, 2016*

**health**

C is the right answer because The spirometer measures the air capacity of the lungs

*February 23, 2016*

**Chemistry**

But where did the 147.9 come from?

*February 23, 2016*

**Chemistry**

Assuming an efficiency of 46.80%, calculate the actual yield of magnesium nitrate formed from 147.9g of magnesium and excess copper(II) nitrate. Mg + Cu(NO3)2 --> Mg(NO3)2 + Cu I can't figure out how to even set this up much less solve it...

*February 23, 2016*

**Reading**

Yes the right answer is C.

*February 20, 2016*

**Art**

PLEASE HELP!!! And if you know all the awnsers to the lesson that would be great!!! There's 5 questions and the last one is a picture, just to make sure we are on the Same lesson. Which statement is the best comparison of the symbolism behind Chinese in the Egyptians and ...

*February 16, 2016*

**8th grade math - Variations**

Thanks. Yes, I forgot about the equation.

*February 15, 2016*

**8th grade math - Variations**

Can you check the following, please? 1. Two minutes after a skydiver opens his parachute, he has descended 1900 feet. After 5 minutes, he descended 4750 feet. If distance varies directly with the time, at what rate is skydiver descending? Ans: to find unit rate -1900/2 = 950 -...

*February 15, 2016*

**engish**

how do you unsabble RAMENAIC TIOLURVENO

*February 8, 2016*

**Math**

It takes Beth 15 minutes to walk to school, 1/2 mile away. What is her walking pace?

*January 31, 2016*

**Help on social studies!**

Okay.

*January 24, 2016*

**Help on social studies!**

I found one, too! Thank you for the help. I just don't trust Wikipedia because my teachers and my parents says so. So, I don't know. But, again, thanks!

*January 24, 2016*

**Help on social studies!**

Oh, and, Wikipedia is off limits.

*January 24, 2016*

**Help on social studies!**

Hi! I was wondering if anyone could give me any websites to research on how forest, a resource, is collected and gathered. I try to look at some things, but nothing really captures what I need to type. Thank you! :) And, I really appreciate it!

*January 24, 2016*

**Math help plz?**

Its fine thank you tho! :)

*December 18, 2015*

**Math help plz?**

Yah it is

*December 18, 2015*

**Math help plz?**

Huh?

*December 18, 2015*

**Math help plz?**

6. Which inequality matches the graph? The graph is -3 -2 -1 0 1 2 3 4 and there is a red line from 1 to -3 The answer is 3x + 1 _< 4 but idk why? 19. Which inequality matches the graph? -3 -2 -1 0 1 2 3 4 and it has a red line from 2 to 4 the answer is 8p + 5 > 21 but ...

*December 18, 2015*

**math**

Ok thanks so what about 6 and 19?

*December 18, 2015*

**math**

3. -3p > -48 The answer is p < 16 but idk why? 6. Which inequality matches the graph? The graph is -3 -2 -1 0 1 2 3 4 and there is a red line from 1 to -3 The answer is 3x + 1 _< 4 but idk why? 19. Which inequality matches the graph? -3 -2 -1 0 1 2 3 4 and it has a ...

*December 18, 2015*

**SS**

Thank you very much @reed

*December 17, 2015*

**SS**

1) Fundamental Constitution of Carolina (what was this and what did it include?) 2) Mayflower Compact (what was this & what type of government did it establish & why was it written?) 3) Slave codes (and why South Carolina had them) Can someone plz help me with these?

*December 17, 2015*

**Trigonometry**

A cat, sitting on top of a tree, spots a dog and a firefighter, both on flat ground below. From the cat's point of view, the dog is 10m south, at an angle of depression of 65 degrees, and the firefighter is some distance east of the tree, at an angle of depression of 50 ...

*December 13, 2015*

**Algebra **

Write the equation of a line that is perpendicular to the given line and that passes through the given point. Y-3=8/3(x+2);(-2,3) I have no clue :,(

*December 12, 2015*

**8th grade algebra**

Can you clarify when to half the diameter when finding volume of cylinder? I had the following problem: 1. Picture of cylinder with base of 48cm (no dotted lines) and height of 7cm. I thought i would solve by using V = 3.14(24)^2 (7) = 12,660.5 cubic meters. According to the ...

*December 12, 2015*

**8th grade algebra**

Can you check my answers? 1. 3√20/√4 = 3√(5)(4)/2 = 3(2)√5/2 = 3√5 2. 4√15/√9 = 4√15/3 3. √12/√16 = √4(3)/4 = 2√3/4 = √3/2 4. √10/√5 = √2 5. √15/√20 = √(5)(3)/&#...

*December 10, 2015*

**language arts**

Unscramble letters to find the answer to what's the first thing you should do when you have a big problem to solve. Three words ULARAEPGNYT

*December 10, 2015*

**Math 1**

AT&T:$0.08 per minute,$5 monthly fee VOIP:(cable phone):free calls,$35 monthly fee Cell:$40 for first 400 minutes,$0.25 per minute after 400 equation for each? how to graph?

*December 2, 2015*

**math **

I have 3 ones, 2 tens,and 1 hundred. Who am I ?

*November 9, 2015*

**Chemistry**

Suppose that 120 g of ethanol at 24◦C is mixed with 275 g of ethanol at 81◦C at constant atmospheric pressure in a thermally insulated vessel. What is the ∆Ssys for the process? The specific heat capacity for ethanol is 2.42J/g K. Answer in units of J/K. Can ...

*November 1, 2015*

**Chemistry**

The heat of neutralization of HCl(aq) and NaOH(aq) is -55.90 kJ/mol of water produced. If 50.00 mL of 1.16 M NaOH at 25.15 ºC is added to 25.00 mL of 1.79 M HCl at 26.34 ºC in a plastic-foam cup calorimeter, what willthe solution temperature be immediately after the ...

*November 1, 2015*

**8th grade algebra**

I'm not sure how to finish simplifying this problem. 1. (3 x 10^-2) - (6.2 x 10^1) = (.003 x 10^1) - (6.2 x 10^1) = -6.197 x 10^1 (need to make positive 'tween 1 and 10)

*October 29, 2015*

**Math**

Naomi and 50 red beads and white beats the number of red beads is one more than six times the number of white bees how many red beans does Naomi have. What does one more than six times the number of white beads mean coming from me Alexis I do not know how to show my work you ...

*October 19, 2015*

**History**

What is the difference between a subsistence economy and the market economy that developed as a result of nineteenth century transportation innovations?

*October 15, 2015*

**history**

Describe the primary economic activity for each of the three colonial regions: the New England colonies, the Middle colonies, and the Southern colonies. Explain how the geography of each region helped determine its economy. I don't know how to explain it and I don't ...

*October 13, 2015*

**8th grade pre-algebra**

Thanks for showing how you got rid of the negative exponent on #30. As for #42, that's just how it was on the worksheet. Thanks again.

*October 12, 2015*

**8th grade pre-algebra**

Can you check the following questions,please? Simplify 30. (-2y)^0/(3x^2)^-3 = 1/(3^-3)(x^-6) = 1/-27x^-6 = 27x^6 42. (-7x^5/14y^3)^3 = (-1^3)(x^15)/(2^3)(y^9) = (-1x^15)/8y^9

*October 12, 2015*

**Social Studies**

This is All wrong

*October 8, 2015*

**Math**

The number of blocks has line in the ones place the number in the hundreds place is one more than the number in the tens place those two numbers equal 11 how many blocks are there

*October 7, 2015*

**8th grade geometry**

Yes, that was how the question was asked. Not sure how I'm supposed to take your response about using wrong spelling.

*October 5, 2015*