Saturday
May 30, 2015

Posts by robert


Total # Posts: 881

Math
The vertical backboard located 4ft from the baseline supports the rim of the basketball net. The backboard measures 6ft wide by 4ft high. The shooter's square is a white box above the rim of the basket. It must measure 1 1/2 ft high and 2ft wide. What is the area of the ...
May 15, 2015

life orientation project
research and briefy discuss the following processes that the community must engage whenever there is an issue before and during a protest :how to engage in a protest, protest restrictions,permit to hold a protest, activities during a protest,as well as the powers of the police...
May 11, 2015

math
If A + B + c = 180 then show that sinA + sinB + sinC=4cosA/2. cosB/2 . cosC/2
May 8, 2015

General Chemistry 132
What is your profession Dr Bob
May 6, 2015

General Chemistry 132
When solid NH4NO3 is dissolved in water at 25celcius, the temp of the solution decreases. What is true about the signs of enthalpy and entropy for this process? I understand entropy is positive, however, i do no understand why enthalpy is also positive. Can someone please ...
May 6, 2015

precalculus
hyperbola with vertices at (0,+/-2), and asymptotes y=+- 1/2x
May 6, 2015

Science
How does the sun's gravitational attraction to the earth compare to that of the moon?
May 3, 2015

math:Fundamental Counting Principlal
solve the problem by applying the fundamental counting principal with two groups of items. Shaun is joining a music club. as part of ther 4-cd introductory package she can choose from 12 rock, 10 alternative, 7 country, and 5 classical. if Shaun choose one selection from each ...
April 30, 2015

math
A baker can make a cupcake for $2.30. She would like a profit of 50 cents each. What is the percent markup on the cupcake, to the nearest tenth of a percent?
April 28, 2015

math
So do i just subtract 180-50.7?
April 9, 2015

math
2 line segments intersect to form an angle that has a measure pf 50.7 degrees. What is the measure in degrees of an angle that is supplementary to this angle. I dont understand what this question is asking me. Can someone explain it to me?
April 9, 2015

Chemistry
Use half reaction to balance: CuS + NO3^- = Cu(NO3)2 + NO2 + SO2 S^2- = SO2 S Oxidized Cu^2+ + NO3^- = NO2 + Cu(NO3)2 N Red After balancing the atoms & balancing the charges, I cannot get all the correct coefficients
March 28, 2015

Physics
You're an investigator for the National Transportation Safety Board, examining a subway accident in which a train going at 80km/h collided with a slower train traveling in the same direction at 20km/h . Your job is to determine the relative speed of the collision, to help ...
March 25, 2015

Math 7th grade
Geraldo bought some computer software on layaway. He paid $12 down and must make a payment of $5 each week for 4 weeks. How much will Geraldo pay in all?
March 16, 2015

Algebra 2
Multiplying or dividing rational expressions 6x^2 + 13x - 5 divide by 6x^2 -23x + 7 Need to show my work.
February 22, 2015

multivariable calculus
show that a=!0 , the equation p=2asin0cos0 describes the sphere centered(a,0,0) at radius|a|
February 15, 2015

Physics
The mans mass would be the same as on earth so its just 560/9.8=57.14kg Second part is F=[(Gconstant)(m one)(m two)]/(radius)^2 G constant is 6.67E-11
February 12, 2015

Physics
static =velocity squared over (radius times gravity). solve for velocity and you get velocity to equal square root (radius*gravity*static)=square root of .15*.30*9.8= .664 m/s
February 10, 2015

math
its 58,000
January 29, 2015

math
i have tryed this like ten times but cant get the answer can u help. 58,00 times 7.40% after u get the answer between the two multiply by 3
January 29, 2015

Language Arts
The correct answer is decided.
January 27, 2015

geometry
a pentagon with a perimeter of 45 feet
January 22, 2015

I guess this is physics related?
Yeah I've done a project like this and we had to measure the time with a very precise instrument.
December 29, 2014

I guess this is physics related?
What is the biggest source of error in measuring the acceleration of a ball down a ramp? knowing the length of the ramp accurately measuring the time knowing the height of the ramp knowing the mass of the ball****
December 29, 2014

science
A + F = yes perhaps also "B - The orientation of the chamber" since this could change between one end of the chamber and the other? ? thoughts? orientation = up/down?
December 13, 2014

science
Yes, I think A + F could be confounding variables probably not B + D + E B does not change across the chamber D is irrelevant E is also irrelevant probably not C, this does not change across the chamber thoughts?
December 13, 2014

science
What is a confounding variable? "A confounding variable is a variable, other than the independent variable that you're interested in, that may affect the dependent variable. This can lead to erroneous conclusions about the relationship between the independent and ...
December 13, 2014

science
An experiment is set up to test whether a particular insect prefer a dark or a bright environment. A chamber with a gradient in light intensity from one end (dark) to the other (bright) has been made. The experimental hypothesis is: “There will be a large difference ...
December 13, 2014

Math
The function f given by f(x) = x^3 + 12x – 24 is? Increasing for all x's? Cause that's what I think..
December 9, 2014

Chemistry
Calculate the solubility (in g/L) of calcium fluoride in water at 25°C if the Ksp for is 1.5 × 10-10 .
December 2, 2014

American National Government
Since the 1930s, when the federal government became more involved in domestic policy functions, federalism has come to be understood as a relationship in which the states are moresubordinate to the supreme power and authority of the national government. **So would the answer ...
December 1, 2014

American National Government
Despite the greater federal authority in the federal relationship, federalism is still important for all the following reasons except that: A)it provides the best means of developing a vast country because it allows for experimentation. B)it may stimulate the interest of the ...
December 1, 2014

POL 201
Despite the greater federal authority in the federal relationship, federalism is still important for all the following reasons except that: A)it provides the best means of developing a vast country because it allows for experimentation. B)it may stimulate the interest of the ...
December 1, 2014

POL 201
Actually the correct answer is "C" it impedes the authority of the government.
November 23, 2014

POL 201
Thank you Ms. Sue
November 23, 2014

POL 201
After reading this link, would it be All basic protections were contained in the Constitution?
November 23, 2014

POL 201
The federalists argued that a Bill of Rights was not necessary because? A. All basic protections were contained in the Constitution. B. the anti-Federalists were being irrational. C. it impedes the authority of the government. D. it would take too long to ratify.
November 23, 2014

english
3. In “The Pigman & Me,” the author creates a mood of suspense by focusing most of the action around a fight between two boys at school. a tree cut almost to its heart. Nonno Frankie’s advice to Paul. concerns about how a girl will react.
November 17, 2014

language arts
Which of these best states Nonno Frankie’s main idea of how to win a fight?
November 17, 2014

physics
what is the t shirts vertical componet of its velocity at launch? if it launches straight at 45° above the horizontal plane at 141 /s?
November 13, 2014

physics
car doing 60 mph and skids for 52.3 meters what is the speed at end of skid co/friction is 0.693 urgent help please
November 3, 2014

science
52.3 meters co of friction is .693
November 3, 2014

science
car doing 60 mph skide for 52.3 mts what is the speed at end of skid
November 3, 2014

Statistics
a Rollercoaster's auditors estimate that the average daily loss from those illegally riding without tickets is at lease (greater or equal) $295, but wants to determine the accuracy of this statistic. The company researcher takes a random sample of losses over 64 days and ...
November 1, 2014

english
Which sentence contains a proper noun? (1 point)The boy quickly ran ahead of his mother to get to school. My dog plays all afternoon with the neighborhood kids. The sweater Tanya wore today was not warm enough. Birds or fish would be a good place to start for a research project
October 30, 2014

math
the height of a ball thrown vertically upward from a rooftop is modelled by h(t)=-5t^2 +20t+50. Determine the maximum height of the ball.
October 14, 2014

Physics
Consider tension force on rope. When ball/cart is not moving, T = mbg. If ball swings to an angle theta, O, then the y-component of T is mbg cosO. The cart is also pulling on the crane of the rope with a Fapp that is opposite to the x-component of the T (mbg sinO). Newton'...
October 12, 2014

Physics
A cart of mass m (including the mass of the crane) has a pendulum hanging from a crane attached to the cart. There is no friction due to the normal force, u = 0, or wheel bearings of the cart wheels. The cart is experiencing and applied force to the left of 10N. The ball at ...
October 12, 2014

math(fractions)
6/5 times 15/4 =90/20 but i cant figure out what the answer is on my answer sheet i have to simplfly. please help thanks you ms.sue and brady .
October 7, 2014

math(fractions)
what is 9/10 times 25/6.i got 225/60 but its not on my answer sheet.i need to simplify. It's not on my answer sheet. please help. its a puzzle.
October 7, 2014

Physics
Edit: Part 2 Find the angle of the third displacement.
October 5, 2014

Physics
A particle undergoes three displacements. The first has a magnitude of 15 m and makes an angle of 40 ◦ with the positive x axis. The second has a magnitude of 6.2 m and makes an angle of 158 ◦ with the positive x axis. After the third displacement the particle ...
October 5, 2014

Math Help
So the answer would be x = -10√1-y) + 2 or (96 + 4x - x^2)/100?
October 4, 2014

Math Help
Find the inverse of the following function algebraically. Show all work. f(x)=-5√-4x+4+2
October 4, 2014

math
Milk was purchased for $48.00. Due to the price increases, this was 2.3 times the cost of milk two years ago. What was the cost of milk two years ago?
September 21, 2014

Pre-Calculus
I'm kind of stuck on how to do this. Can someone help me? Thanks! Write the equation of the line with slope -2 that passes through the point (-1, -3) in slope-intercept form.
September 14, 2014

math
Which set of points are on the line y = 6x - 1? {(0, -1), (29, 5)} {(0, -1), (5, 29)} {(-1, 0), (29, 5)} {(-1, 0), (5, 29)}
September 8, 2014

math
Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x (–3, –2) (–3, 2) (–2, –3) (2, –3)
September 8, 2014

math
Simplify. (6x)2
September 8, 2014

algerbra
Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x (–3, –2) (–3, 2) (–2, –3) (2, –3)
September 8, 2014

math
Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x
September 8, 2014

math
Identify the solution(s) of the system of equations, if any. x + 3y = 7 6x - 9y = 6
September 8, 2014

algerbra
Identify the solution(s) of the system of equations, if any. -4x - 4y = 4 12y = -12x - 12 no solution (0, -1) (-1, 0) infinitely many solutions
September 8, 2014

math
Consider the following system of equations. y = 2x - 2 y - 2x = 7 What can you conclude about the system of equations? The system of equations is inconsistent. The system of equations is dependent. The system of equations is independent. none of these
September 8, 2014

algerbra
Which set of points are on the line y = 6x - 1? {(0, -1), (29, 5)} {(0, -1), (5, 29)} {(-1, 0), (29, 5)} {(-1, 0), (5, 29)}
September 8, 2014

math
A clothing store offers a 60% discount on all purchases. What is the discount in dollars (before tax) for an item originally costing $18.00 dollars?
September 8, 2014

math
the expression that is equivalent to -6(x - 6).
September 8, 2014

algerbra
The temperature on one day in January for Phoenix, AZ, is 56 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -31 degrees Fahrenheit. What is the difference between these two temperatures?
September 8, 2014

Calculus
Two points P and Q are connected by a straight road of length d. At time t = 0, a car starts driving from P to Q at a constant speed c. At t = 0, a bee starts flying from Q toward the car at a constant speed b > c, and takes a zig-zagging path, reversing direction each time...
September 6, 2014

thank u
thank u steve
September 4, 2014

7th grade math
identify a value of x for which sum of 3+x is positive
September 3, 2014

7th grade math
when x is nonzero integer the sum 0f 3+x is sometimes negative and sometimes positive. Identify a value of x for which the sum of 3+x is negative.
September 3, 2014

Language Arts
Which sentence contains a proper noun? (1 point)The boy quickly ran ahead of his mother to get to school. My dog plays all afternoon with the neighborhood kids. The sweater Tanya wore today was not warm enough. Birds or fish would be a good place to start for a research ...
September 2, 2014

math
dentify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y
September 1, 2014

algerbra
Identify the solution(s) of the system of equations, if any. -3x-4y=2 8y=-6x-4
September 1, 2014

algerbra
Identify the solution(s) of the system of equations, if any. x=1 y=1
September 1, 2014

algerbra
Identify the solution(s) of the system of equations, if any. 3x+2y=4 5x-4y=3
September 1, 2014

algerbra
Identify the solution(s) of the system of equations, if any. -3x-4y=2 8=6x-4
September 1, 2014

math
At the school carnival, Carmen sold 3 times as many hot dogs as Shawn. The two of them sold 152 hot dogs altogether. How many hot dogs did Carmen sell?
September 1, 2014

math
Identify the solution(s) of the system of equations, if any. -2x - 4y = 8 8y = -4x - 16
September 1, 2014

algerbra
Consider the following system of equations. y = 4x - 4 y - 4x = 3 What can you conclude about the system of equations?
September 1, 2014

algerbra
A line passes through the points (-10,-4) and(-1,2) . What is the y-intercept of the line? a)(0,8/3) b)(8/3,0) c)(0,-4) d)(-4,0)
August 25, 2014

algerbra
Which of the following is an equation of a line that passes through the point (0, 5) and has a negative slope? y = 5x + 5 y = 5x y = -5x - 5 y = 5x - 5 y = -5x + 5
August 25, 2014

algerbra
thats not one of the answers
August 25, 2014

algerbra
A plumber charges customers $48 for each hour worked plus an additional $9 for travel. If h represents the number of hours worked, which of the following expressions could be used to calculate the plumber's total charge in dollars? 48 + (9 * h) 48 + 9 + h (48 * 9) + h 48...
August 25, 2014

algerbra
The temperature on one day in January for Phoenix, AZ, is 54 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -17 degrees Fahrenheit. What is the difference between these two temperatures?
August 11, 2014

Management
Which one of the following is a defensive strategy?
July 28, 2014

Management
When a manager performs symbolic duties as the head of an organization, that manager is called a
July 28, 2014

Business
in the u.s. economy,_____are considered the reward for risk of entering business.
July 28, 2014

Physics
A student is skateboarding down a ramp that is 8.33 m long and inclined at 24.5° with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 4.12 m/s. Neglect friction and find the speed at the bottom of the ramp.
July 8, 2014

math
Suppose a football team's offense which passes 58% of the time (and rushes the rest), averages 6.9 yards per pass and 4.4 yards per rush. In a game with 65 offensive plays, how many yards would you expect them to gain
June 28, 2014

Chemistry
A balloon contains 0.350 mol of Ar at 5.00°C and 68.0 kPa pressure. What is the volume of the gas?
June 23, 2014

chemistry
Indicate which of the following quantum states are allowed and which are disallowed under the rules governing the electronic structure of atoms. n = 2, l = 1, ml = 0, ms = ½ n = 3, l = 3, ml = -2, ms = -½ n = 4, l = 3, ml = -2, ms = ½ n = 3, l = 2, ml = 2...
June 22, 2014

English
Skateboarding originated in Venice, California. the time was the mid-seventies. There was a drought. The swimming pools were empty. A)Skateboarding originated in Venice,California,there was a drought, swimming pools were empty,the time was the mid-seventies. it says combine ...
June 13, 2014

English
cumulative sentences or periodic pattern Periodic sentence Unable to eat dinner, do my homework, or get any sleep, I could think only of my mother's surgery the next morning Cumulative sentence All I could think about was of my mother's surgery the next morning, I was ...
June 13, 2014

Cumulative sentences english
Able to think only of my mother's surgery the next morning, I could not even eat my dinner, much less get any sleep, nor could I do my homework. My Answer First one is periodic sentence Unable to eat dinner, do my homework, or get any sleep, I could think only of my mother...
June 13, 2014

English Sentence Clarity
Sentence Clarity When in Florence, be sure to see the city's famed cathedral, and many tourists also visit Michelangelo's statue David. My answer Tourists when in Florence, be sure to see the city's famed cathedral and Michelangelo's statue David.
June 11, 2014

maths
3^n-1=2^n+1 how can i solve this problems, please help?
May 28, 2014

math
9:15a.m.
May 19, 2014

Chemistry
A truck has 5.9L diesel engine in it. 5.9L of the overall displacement in 6 cylinders each 102mm bore (diameter) and 120mm stroke (length). Engine operates at 16.3:1 compression ratio and with 6psi (0.41atm) of boost cruising at 1600rpm. 1.) The air mixture has an average ...
May 5, 2014

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