Wednesday
September 17, 2014

Posts by robert


Total # Posts: 823

Math
or to be more specific, one half the base times the height. so one half of 16 times 31, or 8 times 31.
March 3, 2011

Math
A= (1/2)(b*h)
March 3, 2011

Calculus
i figured out the f^-1(x) is the ln ((-13x-6)/(17x-5)) i just need a and b plz help before 11 pm
March 3, 2011

Calculus
f(x) = (5e^x-6)/(17e^x+13) find f^-1(x). since the domain of f^-1(x) is in the open interval (a, b) what is a and and b?
March 3, 2011

chemistry
Iron(II) can be oxidized by an acidic K2Cr2O7 solution according to the net ionic equation. Cr2O72− + 6 Fe2+ + 14 H+ 2 Cr3+ + 6 Fe3+ + 7 H2O If it takes 44.0 mL of 0.0250 M K2Cr2O7 to titrate 25.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?
March 3, 2011

Algebra
apples- 55 cents oranges- 75 cents
March 3, 2011

statistics
The results of a medical test show that of 66 people selected at random who were given the test, 3 tested positive and 63 tested negative. Determine the odds in favor of a person selected at random testing positive on the test.
February 24, 2011

Life orientation
Identify 5 practices in contravention of the basic conditions of employment act?
February 21, 2011

physics
the coefficient of restitution between the ball and the floor is 0.60 If the ball is drop from rest at the height of 6.6 m from the floor. Find a) what is the maximum height will the ball attain after the first bounce. b) how much kinetic energy is lost duirng the impact if ...
February 21, 2011

physics
north-eastern
February 18, 2011

Physical science
The acceleration due to gravity on earth
February 18, 2011

world history
some parts of spain remained under muslim control for how many years
February 17, 2011

Physics with Calc
A point charge of 1.8uC (microcoulumbs) is at the center of a Gaussian cube 55 cm on edge. What is the net electric flux through the surface?
February 5, 2011

Chemistry
Need help balancing this equation, just the coeffecients, do not need to balance the charges. The numbers are subscripts: Ca0.41Mg0.36Mn0.50Fe1.76Al2Si3O12 + H + H20 <---> Al(OH)3 + FeOOH + MnO2 + Ca + Mg + Si(OH)4
January 29, 2011

geometry
How to find the area of a KITE when the length of only one diagonal is given, with two pairs of congruent sides but with no length described
January 25, 2011

Algebra
7. Marcus can paint a garage in 3 hours. Gina can paint the same garage in 2 hours. How long will it take Marcus and Gina to paint the garage if they work together
January 14, 2011

Algebra
Thank you so much!!!(:
January 14, 2011

Algebra
How many pounds of apples costing .64 per pound must be added to 30 pounds of apples costing .49 per pound to create a mixture that would cost .58 per pround
January 14, 2011

Algebra
x = adult tkts y = student tkts 3x = value of adult tkts 1.5y = value of student tkts x + y = 105 3x + 1.5y = 250
January 14, 2011

Algebra
x = adult tkts y = student tkts 3x = value of adult tkts 1.5y = value of student tkts x + y = 105 3x + 1.5y = 250
January 14, 2011

Algebra
How do you solve the equations? ):
January 14, 2011

Algebra
Michelle sold tickets for the basketball game. Each adult ticket costs 3$ and each student ticket costs 1.50. There were 105 tickets sold for a total of 250$. How many of each type of ticket were sold?
January 14, 2011

3rd grade math
how do explain how to break apart 3 x 9 to help me multipy
January 11, 2011

reading
Name some symbols for science fiction?
December 19, 2010

US History
It would help him throughout his presidency,because that was his advisors or cabinet members.
December 19, 2010

physics
In hitting a stationary pool ball with the mass of 170 g, a billiards player gives the ball impulse of 6.0 N-s. At what speed will the pool ball move toward the hole?
December 16, 2010

Physics
Thank you!
December 13, 2010

Physics
Can't figure it out. Does it have something to do with finding w? w=2pi/T = square root of k/m but I don't have K or T?
December 13, 2010

Physics
A 1125 kg car carrying four 80 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude when its speed is 17 km/h. The car now stops, and the ...
December 13, 2010

fractions
6/10 is how long he taught 8th grade so 10 - 6 = 4 is how long he taught something else. The new fraction would be 4/10 but if you simplify it, 2 being the common factor in both you would get 2/5 4 = 2 * 2 10 = 2 * 5
December 12, 2010

Physics
After reading your comment and picturing a see saw, now I get it. Thank you soooo much and have a happy holiday :)
December 12, 2010

Physics
Another question in regards to CT. I know CT refers to the clockwise turn of the meter stick but how can you picture it going in that direction? With no weight on the ruler, isn't it at an equilibrium?
December 12, 2010

Physics
Ahhh, thank you, a lot clearer :)
December 12, 2010

Physics
Thank you so much. I'm confused about one thing though, what does CCT and CT stand for? is it Torque? Or is that another way for center of mass
December 12, 2010

Physics
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 5.00 g coins stacked over the 7.0 cm mark, the stick is found to balance at the 41.0 cm mark. What is the mass of the meter stick? The answer is 38g but I don't understand how to get it.
December 12, 2010

psycology
Do an ESSAY Using Kohlberg's three levels and six stages of moral reasoning, create a character that passes through each stage and explain how she/he responds to moral dilemmas present at each stage.
December 11, 2010

Physics ( check answers)
warren moon throws a footbal with a velocity of 20 m/s at an angle of 30 degrees with the horizontal. air resistance may be ignored. how much time is required for the football to reach the highest point of the trajectory
December 9, 2010

science
How to write 5,800 million metric tons in standard form and in scientific notation?
December 7, 2010

science
How to write 5,800 million metric tons in standard form and in scientific notation?
December 7, 2010

12th grade math
34
December 1, 2010

Algebra 7th Grade
is it correct?
November 29, 2010

Algebra 7th Grade
-5576
November 29, 2010

Algebra 7th Grade
what is -8(700-3)= (using distributive property)
November 29, 2010

Algebra 7th Grade
what is -8(700-3)= (using distributive property)
November 29, 2010

Algebra 7th Grade
what is -8(700-3)= (using distributive property)
November 29, 2010

geometry
a dog toy is constructed in the shape of a cylinder with a length of 6.8 in. The cylinder has a hemisphere at each end. The diameter is 1-9 in. Find the volume.
November 29, 2010

Physics
Never mind. I realized that you want the force of friction to equal the force of tension. Thus when you set it up, you find the normal force and subtract the current way. Ft=Ff Ft=mu x N N-Ma=Mc
November 18, 2010

Physics
In Fig. 6-25, blocks A and B have weights of 49 N and 21 N, respectively. (a) Determine the minimum weight of block C to keep A from sliding, if µs between A and the table is 0.20. (b) Block C suddenly is lifted off A. What is the acceleration of block A, if µk ...
November 18, 2010

math
(6x-7) 5x
November 15, 2010

algebra II
find the area of a triangle fgh f(1,4) g(-2,-3) h(3,-2) using matricies
November 8, 2010

Physics earth & Space
toward what direction, north or south would you look to the sun at noon on june 21-22 if you lived at the following latitudes
November 8, 2010

algebra 2
What is the factorization of the trinomial 3x2 plus 27x plus 60?
November 8, 2010

Honors Algebra
what is the area of a square that has 48 x
November 4, 2010

algebra
Dean is 1/4 that of Emily. In six years Emily will be two times older than Dean. How old is Dean?
November 2, 2010

science
If a car is at a stop and it has to travel 2 miles and its speed is zero to sixty in 9 seconds asuming that you give it full power how fast will it be traveling when it travels 2 miles?
November 2, 2010

english
I have to do a Literary criticism on the author Jules Verne and the books. The problem I have is thinking of a good enough thesis statement that will help me get started on writing my essay.
November 1, 2010

english
1 Sentence thesis on Jules Verne "A journey to the center of the earth"?
November 1, 2010

Chemistry
whats becos mean
October 28, 2010

Chemistry
Compare and Contrast the motion of particles in a solid , liquid and gas?
October 28, 2010

12th grade
A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 13 m/s. The cliff 42 m above the water’s surface With what speed does the stone strike the water? Answer in units of m/s..
October 27, 2010

4th grade
two small arrays have been combined to make a big array. what are the dimensions and product of the big array? fill in the equation that shows this big array broken into two small arrays. Square is broken into 10x6 and 10x5
October 27, 2010

Physics
In Fig. 4-11, a ball is launched with a velocity of 7.50 m/s, at an angle of 50° to the horizontal. The launch point is at the base of a ramp of horizontal length d1 = 4.00 m and height d2 = 3.60 m. A plateau is located at the top of the ramp. What is the magnitude of its ...
October 25, 2010

Physics
write on (i) Cloud chamber (ii) pressurized water reactor (iii) breeder reactor
October 24, 2010

algebra
A 35in. t.v. set has a width of 28in. What would the hight of a 35in. t.v. set?
October 23, 2010

math
Analogies: 54:45 :: 79: ______
October 19, 2010

math
A landscape designer had 50 2/3 pounds of seeds that she wishes to parcel into packages of 2/3 pound each. How many packages can she make?
October 19, 2010

Physics
This is actually incorrect... The angle between the B field and the area is 90-71.6 degrees, or 75 degrees. B*A*COS angle.
October 18, 2010

math
Hello! My name is Robert and I am in 6th grade. I have a question about my homework and my mom and dad cant help u because they are still at work and i need help.Can you please tell me what a division problem that has the same answer as 4.65 divided by 0.12 is? If you can u ...
October 13, 2010

consumer/business math
Amy earns $0.16 per unit for the work she does. For all units she produces in a week over 1,000, she receives $0.26. What were her weekly earnings if she produced 1,725 units in one week?
October 13, 2010

Science
how many mountain lion species are there?
October 8, 2010

algebra
90% of what number is 45?
October 5, 2010

investing
My son informed me that a comic book I purchased for 10 cents in 1948 is worth $55 today. What has been the average annual compound rate of return on that valuable asset?
October 4, 2010

Business Communication
If an audience is opposed to what you have to say or resistant to a charge you are suggesting, a good approach is to:
September 30, 2010

physics 101
What minimum speed does a 150g puck need to make it to the top of a 4.5m -long, 21degree frictionless ramp?
September 21, 2010

poetry
What is the theme presented in the poem: "You are reading this too fast," by Ken Norris?
September 20, 2010

Physics
Nevermind, I got it. a) 78 N b) 0.35
September 19, 2010

Physics
A 24 kg box is released on a 21 degree incline and accelerates down the incline at 0.27 m/s^2. a) Find the friction force impeding its motion. b) What is the coefficient of kinetic friction?
September 19, 2010

Science
Give an example of how animal behavior would chnge if the Earth become hotter in the future.
September 15, 2010

8th grade math
answer: 30m
September 9, 2010

6th grade vocabulary
how do you bild a quote using a web circle and why does the four words needed must have ing, ation,able,and mis in them?
August 25, 2010

algebra
A 35in. tv set has a width of 28 in, what would be the hight?
August 24, 2010

math
find the value of the variables 5y+8=21
August 23, 2010

Business
The longer the time to maturity the less the price increase from an increase in interest rates.
July 21, 2010

algebra 1
how do you write an expression for "three times the difference of a number "x" and5."
July 13, 2010

Communication and Gender Studies
What message in the lyrics from Harry Chapin cats in the cradle song from 1974 convey considering the relationship to gender and family? Could this song have as easily been written about a mother lamenting her relationship with her daughter? If so, why? If not, why not?
July 12, 2010

Math 133
when the volume of a cube is given by V=S3, where S, is the lenght of a side. Find the lenght of a side of a cube if the volume is 500 cm3. And round the answer to three decimal places. can you solve this problem and show all steps with the solution?
July 11, 2010

chemistry
A weak monoprotic acid was calculated, using the usual formula for Ka, to give a pH of 7.4 at a certain concentration. The student who did the calculation was puzzled. What would you advice him/her to do?
July 6, 2010

algebra
The function described by H(x) = 2.75 +71.48 can be used t predict the hight, in centimeters, of a woman whose humerus ( the bone from the elbow to the shoulder) is x cm long.redct the highth of a woman whose humerus is 35cm long.
July 5, 2010

Physics
mass of ball = w/g Acentripetal = v^2/R Force in rope = T up force of gravity down = m g = 71.2 N F = m a T -W = Ac*M T = W + Ac*M
June 27, 2010

Communication and Gender Studies
Thanks for this help!
June 7, 2010

Communication and Gender Studies
Hello everyone! I need help determining how are women in the United States today being discriminated against. I need to provide atleast 3 examples. Can anyone offer some ideas? Thank you!
June 7, 2010

Statistics
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11. (a) At the 5 percent level of significance, does this ...
June 6, 2010

Statistics
A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculate a p-value and interpret it
June 6, 2010

religion
why do people not believe in the miracles of lourdes
June 1, 2010

Consumer Math Part1
35.4% Expressed as a decimal because?
May 19, 2010

Math
Jason is building models in the shape of rectangular prisms. The smaller model has a surface area of 35" sq. and a scale factor of 6. What is the surface area of the larger model?
May 7, 2010

science/math
Well, the area of a rectangle is 1/2bh Base times height That should help.
May 3, 2010

Collisions
Suppose a bullet of mass m = 6.96 g is fired into a ballistic pendulum whose bob has a mass of M = 0.677 kg. (a) If the bob rises to a height of 0.141 m, what was the initial speed of the bullet? I got .042 km/s; but its wrong. (b) What was the speed of the bullet-bob ...
April 29, 2010

Physics
During a rescue operation, a 5350 kg helicopter hovers above a fixed point. The helicopter blades send air downward with a speed of 59.0 m/s. What mass of air must pass through the blades every second to produce enough thrust for the helicopter to hover? I got 31560 kg*m/s but...
April 29, 2010

1st grade
Sam sees a figure The figure has one face The figure is curved What figure(shape) does Sam see?
April 26, 2010

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