Wednesday

May 4, 2016
Total # Posts: 302

**Algebra Help me Please**

Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle the math behind some ...
*April 26, 2016*

**5th Grade Math**

If one side of a triangle is 54 cm and the other is 35 cm what is the third side? Two sides have to be longer than the other so I think it is 54 cm
*April 18, 2016*

**Language Arts**

Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or stand under trees in the...
*February 27, 2016*

**4grade math**

What is the probability of rolling a cube?
*February 15, 2016*

**civics**

theirs popular sovereignty, limited government,checks and balances, federalism and finally separation of power
*February 10, 2016*

**civics**

Federal courts may declare illegal any action violating the Constitution. -Will this be the principle of Rule of Law
*February 10, 2016*

**Algebra 2 **

Write the equation of a trend line. {(-10, 3), (-5, 1), (-1, -4), (3, -7), (12, -12)} How do I do this problem?
*February 4, 2016*

**science**

if your doing an experiment about if sugar or salt will caused fermentation within the yeast.and you have Cup 1 with 2 cup of warm water ;2tsp of yeast and 2tsp of salt. Than cup 2 contains warm 2 cups of water:2tsp of salt and 2tsp of yeast Finally cup 3( this is the control ...
*January 24, 2016*

**Math**

Two railroad tracks cross each other if the measure of angle 1 is 3 times the measure of angle 2, what are the measures of angles 1,2,3, and 4? Explain and show your work
*January 24, 2016*

**science**

and the experimental group will be the 2 other cups 1 and 2 right?
*January 22, 2016*

**science**

if your doing an experiment about if sugar or salt will caused fermentation within the yeast.and you have Cup 1 with warm water ;yeast and sugar than cup 2 contains warm water:salt and yeast Finally cup 3 you have warm water and yeast will cup 3 be the control group or will ...
*January 22, 2016*

**English**

Is 4 prepositional and 5 gerund or prepositional? I got that 13. was A 12 the underlined word was /many/ 13. B
*January 21, 2016*

**English**

#6 C then? #7 direct object #10 A #12 many is the underlined word #13 A
*January 21, 2016*

**English**

I need some help with the answers to these questions, (mainly to see if I'm correct, where I'm wrong and WHY I'm wrong) 1. What is the verb mood of the sentence below? Wear your coat when you are in the school indicative mood imperative mood ***my answer infinitive...
*January 21, 2016*

**Conversion**

an olympic athlete can run 110 years in 10 seconds. How fast in miles per hour can the athlete run?
*January 12, 2016*

**math**

Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?
*January 12, 2016*

**Algebra 1 Solving Systems Using Elimination**

What is the solution of the system? y = -3x 3x + 2y = 6 (2, 6) (-1, 3) (-2, 6) (1.5, -4.5)
*December 28, 2015*

**Algebra 1**

Write an equation in point-slope form for the line through the given point with the given slope 5, 2); m = 3 y + 2 = 3(x - 5) y + 2 = 3x - 5 y - 2 = 3(x + 5) y - 2 = 3(x - 5)
*December 28, 2015*

**Math**

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 3x + 10 y is less than negative 3 over 4 times x minus 1 Part A: Describe the graph of the system, including shading and the types of lines graphed...
*December 19, 2015*

**math**

Scientists randomly caught 30 fruit bats at an orchard. They tagged the fruit bats and then released them. Several weeks later, they captured 20 fruit bats&...
*December 14, 2015*

**Algebra 2 (Math)**

What is the vertex form of the equation? y = -x^2 + 12x - 4. I have no clue how to do this.
*December 14, 2015*

**science**

how is trna made and how dose it help us make proteins
*December 10, 2015*

**math**

Charlie can type faster than any of his classmates. He took a test that showed he can type 700 words in 5 minutes . How many words can he type per minute
*December 6, 2015*

**Chemistry**

The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product. Consider the reaction: P4(s) + 6 Cl2(g) → 4 PCl3(l) If 19.47 g P4 is mixed with 6.85 g Cl2, calculate the theoretical yield (g) of PCl3 ...
*November 26, 2015*

**Math**

I'm sorry, but what kind of question is this? Is it a true or false, solve, ect?.
*April 29, 2015*

**math**

On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.
*April 1, 2015*

**Art**

Yesss! 💯 correct
*March 11, 2015*

**Art**

Thx homie i got them right :)
*March 9, 2015*

**History**

How did Squanto help the colonists in New England
*January 28, 2015*

**History**

Which part of North America did LaSalle claim for France in1684
*January 28, 2015*

**History**

In what present day states did the Dutch establish new Netherland?
*January 28, 2015*

**History**

What were the differences between primary and secondary resources in 1684?
*January 28, 2015*

**Calc**

A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ball is 256/3(pi) cubic centimeters, what is the rate of change of the surface area? (S=4(pi)r^2 and V=4/3(pi)r^3)
*December 22, 2014*

**Chem**

No clue what to do part of my lab
*November 11, 2014*

**Chem**

Find the exerted pressure in kpa Volume=0.05L Mass=5 Atmospheric pressure =764mm Hg Temperature=21degree Celsius Cross sectional area plunger 5.3 x10-4
*November 11, 2014*

**Algebra**

X-3y=9 2x-y=-2
*October 21, 2014*

**c programming**

a student designed a program to accept the age of an employee and then compute the employees retirement year and display the same in a statement on the screen required. a) write out the pseudo-code for the program above b) write the algorithm, c) flowchart d) write the program...
*October 14, 2014*

**Math**

This is a bonus question. If the modes of a problem are13 and15 and the mean and the median are 15 how do you come up with the other numbers
*September 30, 2014*

**English/language arts**

Thank you!
*September 24, 2014*

**English/language arts**

That orange deposit
*September 24, 2014*

**English/language arts**

What is the complete subject in the sentence That orange deposit on the outside surface is called rust.
*September 24, 2014*

**Algebra **

A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth will be 2 millimeters
*September 23, 2014*

**CAN SOMEONE HELP ME UNDERSTAND AND SHOW HOW TO DO THIS.tHX!**

hELLO?
*September 23, 2014*

**Physics**

Two forces are applied to a car in an effort to move it, as shown in the following figure (cannot attach picture), where F1 = 416 N, 10 degrees to the left of north and F2 = 356 N, 30 degrees to the right of north. What is the sum of these two forces acting on the car? ...
*September 12, 2014*

**Science!**

Which of the following is a valid reason why a scientist might regect a scientific theory?
*September 11, 2014*

**Civics**

Explain how federal income taxes support the economy and benefit the common good. I have to have at least one well-developed paragraph, and this question is worth 10 points which is why I need help!!
*June 11, 2014*

**Math**

Which of the following transformations will never produce a congruent figure? A. rotation B. reflection C. translation D. dilation <------
*May 22, 2014*

**Math**

1)Let AB be the directed line segment beginning at point A(1 , 1) and ending at point B(-4 , 6). Find the point P on the line segment that partitions the line segment into the segments AP and PB at a ratio of 5:1. A)(-3 1/6,5 1/6) B)(1/6,1 5/6) <---- C)(-3 4/5,31) D)(-2 1/6...
*May 22, 2014*

**math**

1.00
*May 19, 2014*

**Math**

Use experimental probability to make a prediction. John made 35 free throws and missed 15. Predict the number of free throws he will make in the next 100 tries. A. 70 B. 85 C. 55 D. 45
*May 2, 2014*

**Physics**

A rope is used to pull a 5.19 kg block at constant speed 3.38 m along a horizontal floor. The force on the block from the rope is 3.23 N and directed 20.0° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the ...
*March 10, 2014*

**Physics**

A 540 g block is released from rest at height h0 above a vertical spring with spring constant k = 320 N/m and negligible mass. The block sticks to the spring and momentarily stops after compressing the spring 19.8 cm. How much work is done (a) by the block on the spring and (b...
*March 10, 2014*

**Math**

8292
*February 16, 2014*

**Physics**

Okay. So I got 2356J is that right?
*February 3, 2014*

**Physics**

Damon, this is my last question for today for you. Thanks for all your help. A gas is at an initial pressure of 1.24104 Pa and occupies a volume of 0.28 m3. The (slow) addition of 23,570 cal of heat to the system causes it to expand in an isobaric manner to a volume of 0.47 m3...
*February 3, 2014*

**Physics**

An ideal monatomic gas goes from p1 = 180 atm and V1 = 45 m3 to p2 and V2 through an adiabatic process. If p2 = 60 atm, what is V2?
*February 3, 2014*

**Physics**

An ideal gas heat engine operates in a Carnot Cycle between temperatures of 266 and 115°C. It absorbs 4250 cal per cycle at 266°C. What is its efficiency as a percentage?
*February 3, 2014*

**Global Studies (check please)**

1) B 2) D 3) D
*February 3, 2014*

**Physics**

A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
*February 3, 2014*

**Physics**

5.4377 was my final answer and that was right.
*February 3, 2014*

**Physics**

I figured it out.
*February 3, 2014*

**Physics**

How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.
*February 3, 2014*

**Physics**

An aluminum calorimetry cup [mc = 0.6 kg, cc = 0.22 kcal/(kgC)] is filled with water [mw = 2.4 kg, cw = 1 kcal/(kgC)]. It is at a temperature of 30C. A sample of an unknown substance with mass mm = 2.34 kg, originally at a temperature of 210C, is added. After a while, the ...
*February 3, 2014*

**Physics**

A weight lifter manages to lift a 147 kg weight a distance of 1.1 m. Treat her as a thermodynamic system and find how much heat (in kcal) she must put out if her internal energy decreases by 3620 J during the lift.
*January 31, 2014*

**Physics**

Help?
*January 31, 2014*

**Physics**

A weight lifter manages to lift a 147 kg weight a distance of 1.1 m. Treat her as a thermodynamic system and find how much heat (in kcal) she must put out if her internal energy decreases by 3620 J during the lift. Not sure how to answer this.
*January 31, 2014*

**Physics**

I can figure it out. Thanks for your help
*January 17, 2014*

**Physics**

A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. Some of the gas leaks until the pressure falls to 1500 kPa. How many moles of gas leaked, assuming that the temperature remains constant during this process?
*January 17, 2014*

**Physics**

A can of gasoline has a rectangular base with dimensions of 13.5 cm by 13 cm. If there are 3 liters of gasoline in the can, how much does the surface of the gasoline rise (in mm) in the can when the temperature is raised by 45C? The coefficient for volume expansion of gasoline...
*January 17, 2014*

**Physics**

I got .13172 m is that correct?
*January 17, 2014*

**Physics**

By what amount will a 178 m long concrete slab on the Mackinac Bridge contract when going from +39C to -35C? The linear expansion coefficient is 10^-5 per C.
*January 17, 2014*

**English !!!**

dont have choices its fill in the blank
*November 20, 2013*

**English !!!**

To find out which key will open a lock, you try several until one works. This kind of learning is called ________________________.
*November 20, 2013*

**Physics**

My only question is how to find the speed of the particles
*November 14, 2013*

**Physics**

Thank you so much! I got 22.61x10^-21 is that right?
*November 14, 2013*

**Physics**

1. A gold atom has a mass of 3.287 • 10-25 kg and is at rest. It emits an alpha particle that has a mass of 6.646 • 10-27 kg. In this process, the gold atom is transformed into an iridium isotope. The alpha particle has a speed of 3.40 • 106 m/s. A. What is the ...
*November 14, 2013*

**Calculus-Applied Optimization Quiz Problem**

A rancher wants to fence in a rectangular area of 23000 square feet in a field and then divide the region in half with a fence down the middle parallel to one side. What is the smallest length of fencing that will be required to do this?
*October 31, 2013*

**Physics**

A 67.0 kg astronaut on the planet Zircon (mass = 1.15 x 1023 kg and radius = 2.00 x 106 m) tosses a 8.00 g frog astronaut (a frogonaut?) horizontally with a speed of 7.45 m/s. The 8.00 g frog falls through a vertical distance of 1.40 m and lands a horizontal distance of 8.05 m...
*September 5, 2013*

**physics**

An archer shoots a 54.6 g arrow horizontally at a target 14.0 m away. The arrow is 18.0 inches long. The 54.6 g arrow is aimed directly at the center of the target, but it hits 60.0 cm lower. What was the initial speed of the arrow? (Neglect air resistance.)
*September 5, 2013*

**Math**

1/8(2sin2x-sin4x)= cosxsin^3x prove
*June 19, 2013*

**Biochemistry**

Calculate the ATPs resulting from the total oxidation of the following compounds: a. Fructose-6-phosphate b. 3-Phosphoglycerate c. Succinyl-CoA d. Stearic acid How do I begin?
*April 28, 2013*

**Biochemistry**

Based on free energies of hydrolysisgiven below, for each of the followingreactions: i)Determine the overall ∆G of thereaction ii)State whether it is favorable...
*April 18, 2013*

**calculus**

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.3x+19 Determine the consumers&#...
*April 10, 2013*

**language arts**

The answer is B you can tell from the context clues since the sentence refers to a scientist that would be a guest speaker. From this you can deduce that this person is going to do a sort of lecture which usually involves speech and writing. Reasons why other answers are wrong...
*April 9, 2013*

**calculus**

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. -0.01x^2-0.3x+19 Determine the consumers'...
*March 16, 2013*

**Chemistry**

is Fe3O4 + 4H2 = 3Fe + 4H2O spontaneous at 298 K? Delta H system= 149.8 kj/mol Delta S system= 610.0 kj/mol
*March 5, 2013*

**science**

How to do homework on soil erosion and soil conservation ?
*February 13, 2013*

**Math trigonometry**

Prove sinA/1+cosA =tan1/2A
*January 24, 2013*

**Math**

Find in terms of trigonometric function of x Tan(90° + x)
*January 19, 2013*

**Health**

The ________the concentration of HIV in semen or genital fluids, the more likely it is that HIV will be transmitted to a sex partner?
*January 17, 2013*

**Integration**

∫ sin2xcos3x dx using factor formula
*January 8, 2013*

**Trigonometry**

Prove 1-cosx+sinx / 1+cosx+sinx =tan x/2
*January 8, 2013*

**statistic**

I'm not sure..
*January 5, 2013*

**Physics**

Im looking for the same thing
*December 11, 2012*

**physical science help please!**

If a sample emits 1000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 2 meters from the sample?
*December 5, 2012*

**Chemisty **

how many mole of calcium sulfate are in a 100mL of .86M solution?
*November 26, 2012*

**english**

What is the verb (linking or action) in "Long ago, farmers milked cows by hand"
*November 14, 2012*

**4th grade math**

ugh, thank you so much! I was not thinking hard enough.
*October 9, 2012*

**4th grade math**

Can't divide by 8 either, so I am stuck. This problem was on my actual homework today.
*October 9, 2012*

**4th grade math**

I am a 2 digit number. You can divide me by every single digit except for 5 and 7. Add my digits together and the sum is 9. What number am I?
*October 9, 2012*