Tuesday
January 24, 2017

Posts by sam

Total # Posts: 5,094

Math
thank you and sorry damon
October 17, 2016

Math
Jean Claude equally shared a box of chocolates with two of his friends. The box weighed 9/5 pounds. How many pounds of chocolate did each person receive?
October 17, 2016

Statistics
A science teacher gives a test with 15 questions. This teacher is a hard grader. The teacher assigns points in the following manner: a correct answer = +1 point, an incorrect answer = -1 point, no answer = 0 points. So scores on the test could range from +15 to -15. The ...
October 14, 2016

Statistics
Suppose that 40 students take a quiz and everyone in the class scores an 80. The standard deviation of scores for this quiz is: 80 2 0
October 14, 2016

Statistics
A college statistics class conducted a survey of how students spend their money. They asked 25 students to estimate how much money they typically spend each week on fast food. They determined that the mean amount spent on fast food is $31.52 with a standard deviation of $21.60...
October 14, 2016

maths
A man buys lemon at 6 for rs 10 and sells at 8 for rs.15 find his gain percent
October 10, 2016

chemistry
Consider the following reaction. 4Fe + 3O2 2Fe2O3 a. How many moles of O2 are required to react completely with 46.7 mg of Fe? How many grams Fe2O3, are produced from the complete reaction of 20.1 g of Fe?
October 9, 2016

Physics
An asteroid has a mass of 3.66 x 10^20 kg and a radius of 8.2 x 10^5 m. If a 25 kg mass is dropped fro 10 m above the "ground" of the asteroid, how long will it take the mass to fall to the ground?
October 7, 2016

physics
An 8000 kg elevator is supported by a steel cable. If the acceleration of the elevator is 1.4 m/s^2 upward, then find the tension in the cable.
October 7, 2016

Geometry
1) What are the converse, inverse, and contrapositive of the statement? Which statements are true? If the figure is a rectangle with sides 2 cm and 3 cm, then it has a perimeter of 10cm. My A: the statement is not true. 2) What are the hypothesis and the conclusion of the ...
October 7, 2016

Calculus 1
Rick has 1200 feet of fence that he wants to use to enclose a rectangular garden. Find the maximum area the garden can have.
October 6, 2016

maths polynomial need help
4m^4-24m³+33m²+9m-9=0 help me with factor
October 5, 2016

Physics
An Australian emu is running due west in a straight line at a speed of 12.8 m/s and slows down to a speed of 7.7 m/s in 7.4 s. (a) What is the direction of the bird’s acceleration? (b) Assuming that the acceleration remains the same, what is the bird’s velocity after...
October 4, 2016

damon-steve- help statistics
Statistics City XYZ has 8800 registered voters. There are two candidates: Peter and Paul. A poll of 600 randomly selected registered voters was conducted. We know that 331 said they'd vote for Peter and 251 said they'd vote for Paul. We also know that 18 were undecided...
October 4, 2016

Math
it correct yeah
October 4, 2016

maths
let the number be a:b=2:3 a+b=30 now a/b=2/3 a=2b/3 input above 2b/3+b=30 2b+3b=90 5b=90 b=18 i live to to find the other value now
October 3, 2016

Algebra2-nothing to simplify
i-5/2i what i see nah
October 3, 2016

math 115
volume=width*hight*lenght volume=100, 100m*290*29m volume=29000029m^3 icubic meter=1000,000meter then there is 29000029 cubic meter 2.9000029*10^13
October 3, 2016

math
1/2(-4+5/4) 1/2(-16+5/4) 1/2(-11/4) -11/4 is between them
October 3, 2016

percentage
a+10+10/a=72 a^2+10a-72a+10=0 a^2-62a+10=0 solve quadracticly
October 3, 2016

Math-honestly i hope am right
a+b=15 a^2b^3=m a=15-b (15-b)^2b^3=m (225-30b+b^2)b^3=m 225b^3-30b^4+b^5=m dm/db=675b^2-120b^3+5b^4 at dm/db=0 675b^2-120b^3+5b^4=0 b^2(675-120b+5b^2)=0 divide through by b^2 5b^2-120b+675=0 divide through by 5 b^2-24b+135=0 plz solve quadracticly and sub into the first ...
October 3, 2016

Math-honestly i hope am right
a+b=15 a^2b^3=m
October 3, 2016

Calculus
okay (x^2-x+1)-2[(x^2-x+1)(2x-1)(x-2)]/(x^2-x+1)^4 (x^2-x+1)-2[(2x-1)(x-2)](x^2-x+1)/(x^2-x+1)^4 factor out (x^2-x+1) (x^2-x+1)[-2(x-1)(x-2)]/(x^2-x+1)^4 -2(x^2-3x+2)/(x^2-x+1)^3 plz do wait for mathematician steve to come complete it for you but that the simplification am sure
October 2, 2016

Algebra
Suppose that a cyclist began a 390 mi ride across a state at the western edge of the state, at the same time that a car traveling toward it leaves the eastern end of the state. If the bicycle and car meet after 6.5 hr and the car traveled 32.4 mph faster than the bicycle, find...
October 2, 2016

Analytical chemistry
A solution is created using 2.1700 grams of Calcium Hydroxide (MW is 74.093) in a 1L volumetric flask. A 50 mL aliquot is then taken and aded to a 350 mL volumteric flask and filled to the line. Finally, a 10 aliquot of the that solution is taken and added to a 100 mL ...
October 2, 2016

Analytical chemistry
0.6140 grams of sodium phosphate (Na3PO4) was dissolved in 2 L of water to make a stock solution. 34 mL of this solution is then diluted to 100mL volumetrically to prepare the final solution. Calculate the molarity of phosphate ions in this solution. Answer to 5 decimal places.
October 2, 2016

math condense logs
it is the same thing bro log and ln
October 1, 2016

math condense logs
3logx-6log(x^2+1)+log25 logx^3-log(x^2+1)+log25 logx^3+log25-log(x^2+1)^6 log(x^3*25/(x^2+1)^6))
October 1, 2016

maths asap need help
let the perpendicular distance of a line L from the origin l = 5 and let this perpendicular make an angle @ = pi/6 with the x axis. Determine the normal equation of l? Plz show me working
October 1, 2016

Math (Expanding logarithmic expression)
you can just say lnx^3-lnx^2+lnx-ln1 lnx^3-lnx^2+lnx-0 which is lnx^3-lnx^2+lnx
October 1, 2016

Math (Expanding logarithmic expression)
your expansion is 100% correct
October 1, 2016

Psychology
HI i don't know the synopsis of the ted talk " stroke of insight" i thought the bigger picture would be that the right and left part of the brain are different but .y teacher said that is not the case
September 29, 2016

Pre-Calculus
csc theta = (sqr root 5) over 15, find sine theta
September 28, 2016

Pre-Calculus
If csc theta = square root of 5 divided by 15, find sin theta
September 27, 2016

Math
Darcy needs 1/4 yard of fabric to make a banner. She has 2 yards of fabric. How many banners can she make?
September 27, 2016

Math
What do you use to identify the specific name or line segment?? I really don't understand what my teacher is looking for, any help would be awesome.
September 26, 2016

Physical education HELP PLS!!!!!!!!!
I'm pretty sure it's D
September 26, 2016

Maths
Find the sum of the area of the ceiling and the floor of a room of 5m long, 4m wide and 2.5 high.
September 26, 2016

maths need help
Father is aged three times more than his son Ronti. After 8 years , he would be two and a half times of Ronti's age. After further 8 years, how many times would he be of Ronti's age?
September 25, 2016

american government
Lmao I feel like everyone here goes to connections academy
September 24, 2016

Research Methods
An infomercial asserts, “A study proves that Fat-Be-Gone, and it will work for you also.” What is wrong with this statement?
September 22, 2016

trigonomentry using either exponential or complex
give the expansion of sin^8@ as a series of cos@ plz help me i only know the normal way of doing that but i do not know how to apply complex number or exponential
September 21, 2016

maths plz help
give the expansion sin^8@ as a series of cos@ plz help me show working where @ means theta
September 21, 2016

mathematics need help
find the parametric equation for the line with slope 3 and y-intercept -2 where 't' is any real number?
September 19, 2016

Math
How would I solve x2+3x+1/4 into standard form? Would I multiply everything by 4 to cancel out the 1/4 so it will cancel it. Giving me 4x2+12+1 then factoring out
September 16, 2016

maths need help
correct to one significant figure how many digit are there in expansion of 2^(1999)
September 15, 2016

Social studies
are you right sara
September 14, 2016

Chemistry
At constant pressure, which of these systems do work on the surroundings? A(s)+B(s)-->C(g) 2A(g)+2B(g)--> 3C(g) A(g)+B(g)-->3C(g) 2A(g)+3B(g)-->4C(g) I've tried everything and I just don't understand what I'm doing wrong.
September 13, 2016

History
A fundamental theme of the Gettysburg address is A. The condemtion of unnecessary violence** B. The description of the impact of the civil war I got it narrowed down to these, I think it is A though
September 12, 2016

History
Can someone check this? The organizational patter of the Gettysburg Address is: A. problem and solution B. Compare and contrast C. Chronological D. Order of importance***
September 12, 2016

SOCIAL STUDIES (CHECK ANSWERS ASAP)
I think 1 and 2 are right but i'm not sure about 3
September 12, 2016

Math HELP!
The first thing you need to do is the parentheses so {(82-4)-4} (82-4)=78 78-4=72 Now that the parenthesis are done, divide 72 by 6. 72 divided by 6 is 12.
September 12, 2016

ss
I think the answer is B
September 12, 2016

Chemistry
How many milliliters of a 0.48 M HCl solution are needed to react completely with 7.4 g of zinc to form zinc(II) chloride? Answer in units of mL.
September 10, 2016

Social Studies
The Spanish colonists
September 9, 2016

Social Studies
What kind of relationship did colonists have with the Native Americans A. The two groups were equals B. Colonists ignored Native Americans C. Native American taught colonists religious rituals D. Colonists treated Native Americans poorly
September 9, 2016

chem help!
answer is C rate of forward reaction is always equal to rate of reverse reaction.
September 9, 2016

Chemistry
What changes of state are involved in this use of ethyl chloride? Select all that apply. Select all that apply. 1-liquid to gas 2-liquid to solid 3-gas to solid 4-liquid to solid 5-solid to liquid 6-solid to gas
September 9, 2016

Social Studies
What was the answer?
September 7, 2016

Math
5m^4/3(m^1/3*2n^1/8)
September 6, 2016

Algebra
A 116-cm board is cut into two pieces. If one piece is 40-cm shorter than the other, how long are the two pieces?
September 4, 2016

Science
MMR causes autism Help with the connection between MMR vaccine to autism pros and cons
September 3, 2016

english
A mile from end to end, yet as close to as a friend. A precious commodity, freely given. Found on the rich, poor,short and tall, but share among children most of all What am I?
September 2, 2016

Pathway to Statistics
a. What value of T represents the temperature that is 16°F below​ zero? b. A student says that T represents only positive numbers and​ zero, because there is no negative sign. Is the student​ correct? Explain
September 1, 2016

math
What number must be added to each of the numbers 1, 3, and 6 in order for the resulting numbers to form a geometric sequence?
September 1, 2016

social studies
Help a bro out and send me the right answers
August 31, 2016

social studies
I got different answers
August 31, 2016

social studies
What's the right answers for the quiz?!@Eagleman
August 31, 2016

economic
find the competitive price and quantity (as if the above marginal cost curve represents the market supply curve. given the market demand equation P=100-.1Q and TC=1000+20Q+.4Q^2
August 30, 2016

algebra help
Please help me with this and if you can explain please, okay so i have x-y=0 and x-2y=6 i have to solve by using substitution, at first i though i can replace x-2y=6 with x but then i notice that i can't can i put one of the equations into y=? Please help me with this ...
August 27, 2016

algebra
How do i do this okay i have x=17-4y and y=x-2 i have to solve by using substitution i don't get it do i replace x-2 for x then solve please help me
August 23, 2016

geography
Which of the thematic map would best show the location of climate zones?(qualtative map, cartograms, and flow- line maps)
August 23, 2016

Social studies
3) which of the following is an advantage of a presidential government? A) the president is elected independently of the legislature B) the president is part of the leg. Branch of government. C) a system of checks and balances increases legislative power. D) a system of checks...
August 23, 2016

Geometry
Three colinear points on the coordinate plane are R(x,y) S(x+8h, y+8k) and P(x+6h,y+6k0 Determine value of RP/SP and RP/RS?
August 23, 2016

American Government
Is it really b?? @mass
August 19, 2016

Social studies
Which of the following is an advantage of a presidential government? A) the president is elected independently of the legislature B) the president is part of the legislative branch of government C) A system of checks and balances increases legislative power. D) is there checks...
August 16, 2016

Social Studies
Is it D then?
August 15, 2016

Calculus
Use L'Hoplital's rule to find the limit. Lim x->0 (3-3cos(x))/(sin(4x))
August 10, 2016

Calculus
The velocity of an object is given by the velocity function v(t)=t/42. If the object is at the origin at time t=0, find the position at time t=20.
August 10, 2016

math
A shipment of 9 printers contains 4 that are defective. Find the probability that a sample of size 4​, drawn from the​ 9, will not contain a defective printer . the probability is ?
August 10, 2016

chemistry
calculate the mass of potassium hydrogen phthalate needed to prepare a 0.1M solution in a 250 ml volumetric flask given that the molar mass of potassium hydrogen phthalate is 204,23g/mol
August 3, 2016

Ap govt.
Please check my answers and help me with those that are wrong. Which of the following forms of government most clearly bases power on the consent of the governed? A. aristocracy B. totalitarian regime C. Oligarchy D. Anarchy E. Republic I put A All of the following are factors...
July 21, 2016

Grammar
Every paragraph should begin with a topic sentence. Is this True.
July 16, 2016

c programming
write a program that computes tax and tip on a restaurant bill for a patron with rs.44.50 per meal charge.the tax should be 6.75 percent of the meal cost.the tip should be 15 percent of the total after adding the tax.display the meal cost,tax amount,tip amount and total bill ...
July 12, 2016

english
Properly format the following conversation, using dialogue tags and proper punctuation. In other words, make it look as it would in a short-short story: Jane: Hey, Mary. How are you? Mary: Good. You’ll never guess who I saw yesterday! Jane: Who? Wait—don’t tell ...
July 7, 2016

Math
Find the equation of a straight line that is parallel to y=4x+1 and passes through (7,5)
July 3, 2016

math
Mario's age is thrice the age of Martin. If the sum of their ages is 80 , how old are they?
July 3, 2016

physics
Any thoughts?
June 30, 2016

physics
A cyclist is attached to a rope which is looped over a pulley (disc of mass 10kg and radius 0.5m). The rope is then attached to a hanging block of mass 5kg. What force must the cyclist generate such that the block will move with an acceleration of 2.25 m/s2. Let’s make ...
June 30, 2016

physics
A cyclist is attached to a rope which is looped over a pulley (disc of mass 10kg and radius 0.5m). The rope is then attached to a hanging block of mass 5kg. What force must the cyclist generate such that the block will move with an acceleration of 2.25 m/s2. Let’s make ...
June 30, 2016

Math
If the 4th term of an arithmetic sequence is 24 and the 12th term is 56, whats the first term?
June 29, 2016

math
1. Marry works in a factory that prudes 1,000 telephones each day when 30 telephones were sampled it was found that 9 were defective estimate how Manny telephones are defective each day. 314 telephones 284 telephones 300 telephones*** 310 telephones 2. A ice cream shop offers ...
June 9, 2016

Reading
1. What effect does Mrs. Winterbottom’s decision have on Phoebe? A. Phoebe is humiliated by her mother’s decision to leave. B. Phoebe’s behavior becomes increasingly tense and ornery. C. Phoebe is withdrawn and refuses to socialize with her friends. D. Phoebe is...
June 6, 2016

physic
Which of the following statements incorrectly describes a scenario where the source of the sound waves and the person hearing the sound are remaining stationary?
June 1, 2016

Government
Which institution developed outside the limits of the written Constitution of the United States?
June 1, 2016

physic
Which of the following statements incorrectly describes a scenario where the source of the sound waves and the person hearing the sound are remaining stationary?
June 1, 2016

Math
How many 250ml cups can I fill up if I have 250 liters of water?
May 31, 2016

Math
Sam has two cubes. The ratio of the side length of the two cubes is 2:3. What is the ratio of the volume of the two cubes?
May 31, 2016

Math
John has closed square prism with a base of 36 square inches and a surface area of 360 square inches. Figure out its height?
May 31, 2016

Math
Tom's online class requires 10 tests, and he needs to score 70 or higher to pass the class. He took 9 tests so far and his average is 68. What is the lowest score on the last test that will let him pass the course?
May 31, 2016

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