Saturday
July 23, 2016

Posts by bobby

Total # Posts: 678

Physics
idk sorry fam
July 20, 2016

Physics
A ball is thrown horizontally from the building roof at a speed of 20 m/s. Takes ball 4 seconds to reach the ground. How tall is building? What is the ball’s speed and direction as it contacts the ground? How far from the base of the building does the ball land? Use ...
July 11, 2016

Math
In the NFL, a division consists of 4 teams, each of which plays each other team twice. Assume that in any game, either team is equally likely to win (and there are no ties). What is the probability that, at the end of the season, the division has neither a perfect team with 6 ...
June 17, 2016

math
10 years ago raj deposited $5000 into an investment account with intrest compound quarterly. for the first 5 years the intrest rate was 6% and for the next 5 years the interest rate changed to 4.5% how much money is in the account now
June 14, 2016

Chemistry
A buffer was prepared by mixing 0.1 M ch3cooh with 0.1M ch3cooNa in the ratio 8:2. Calculate ph after the addition of 2mL of 0.1 M HCl? When you do the 8:2 ratio and add 2 mL of 0.1 M HCl, the buffer is gone and you are left with 1*10^-3 moles of ch3cooh. How would you ...
June 2, 2016

Chemistry
The acetate buffer were prepared by mixing 0.1 M ch3cooh with 0.1M ch3cooNa in the ratio 8:2 and 2:8. Calculate the resulting ph after the addition of 2mL of 0.1 M HCl to 10 ml of buffer 8:2 and 4ml of 0.1 M NaOH to 10 ml of buffer 8:2.
June 2, 2016

Geometry
maria is building a carrying case for a musical instrument. The case will have the shape of a triangular prism. She wants to know how much material will be needed to build it. The case will have the dimensions given in the diagram. What is the surface area of the case in ...
May 30, 2016

Math
19 students share 6 pizzas each need equal portions how much will each one have? I divided 6 pizzas into 8 pieces which gave me 48 pieces so 6/8 of a pizza
April 26, 2016

Maths
Tom reads that each seedling he is planting needs an area of 150 square centimetres of garden. Tom has 80 seedlings to plant. What is the total area of garden the seedlings will need? Give the area in A: Square Centimetres or B: Square Metres
April 20, 2016

math
Write4.1x10 to the 5th power in standard form
April 7, 2016

Math
What is the range between 58 degrees and -88 degrees
March 16, 2016

Physics
An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.
March 13, 2016

Physics
A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)
March 13, 2016

Physics
A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)
March 13, 2016

Physics
An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.
March 13, 2016

Dynamics
A 45ft long conveyor is used to move boxes up to a second level. The belt speed is 150ft/min and the conveyor is inclined at 15 degrees. Boxes are dropped vertically onto the conveyor and have no horizontal speed. The static and dynamic coefficient of friction between the belt...
March 10, 2016

math
The race was around a circular track for twenty-two laps.Calculate the number of radians a racer would travel from start to finish
March 9, 2016

English
What roles are played by the female characters you encountered in this unit? Describe some of these female characters, their traits, and the roles they played within the selections you read, especially considering that all of those selections had male characters as protagonists.
February 29, 2016

Chemistry
A 70.0 mL solution of 0.171 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.171 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. a) Calculate the pH at the first ...
February 28, 2016

Chemistry
What volume (in milliliters) of 0.100 M NaOH should be added to a 0.120 L solution of 0.024 M glycine hydrochloride (pKa1 = 2.350, pKa2 = 9.778) to adjust the pH to 2.95? I dont know how to do this problem! Steps with answers please!! HELP!!
February 28, 2016

physics
Mayan kings and many school sports teams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height of 12.2 ft when leaving the ground at an angle of 44.2°. With what speed, in SI units, does it leave the ground ...
February 15, 2016

Algebra 2
A right triangle has a 45 degree angle. The hypotenuse is x and the leg is 8. Find the value of x.
February 10, 2016

math
The length of a rectangle is 8 less than twice the length. If the perimeter of the rectangle is 194 inches, find the dimensions of the rectangle.
February 2, 2016

Language Arts
Great! Thanks, Ms. Sue! I appreciate it.
January 14, 2016

Language Arts
Could it be C?
January 14, 2016

Language Arts
Simile has "like" in it. So, A?
January 14, 2016

Language Arts
I don't know if it is A or B for the first one... But, for some reason, I'm looking in at B.
January 14, 2016

Language Arts
Or, could it be A on the first one?
January 14, 2016

Language Arts
Which of the following answer choices contains a METAPHOR? a. His skin was sandpaper. b. The sun sparkled like a diamond. * c. Sh wanted to be like the birds and fly away. d. They felt free when they ran through the doors. What is a key characteristic of a refrain in poetry? a...
January 14, 2016

Algebra
Tell whether the lines for each pair of equations are parallel perpendicular or neither. Y= -2x + 4 -5+10y=5 I think perpendicular Next question is same kind- Y=-1/4x+10 -2x+8y=6 I think it's neither
December 12, 2015

Algebra
Match the equation with its graph -2/3 x - 1/4y = 1/3
December 12, 2015

Physics
A light ray in water is directed at the water surface at an angle of incidence at 40 degrees. Calculate the angle of refraction of the light ray at this surface.
December 10, 2015

Algebra
Flying against the wind, an airplane travels 28 km in 5 hours. Traveling with the win, the same plane travels 3760km in 4 hours. What is the rate of the plane and still air and what is the rate of the wind?
November 17, 2015

MATH
6 is one of the common multiples
November 17, 2015

Logarithms
Solve the following equations for x and check the solution using log. 2^6x-1 = 28 The answer is log56/6log2. Explain each step.
November 7, 2015

algebra
thank you you helped allot
November 3, 2015

algebra
thank you
November 2, 2015

aarays and expanded algorithm
How to get the answer to this problem 37 ×45
October 28, 2015

Lititure
How do u write a melcon and rikki-tikki-tavi as a bully
September 29, 2015

chemistry
49.5(0.506-x)(0.253-x)=4x^2 How to make it in quadratic equation Please help with step by step. thank u so much
September 27, 2015

find the area of the rectangle
84cm And 19cm?
September 18, 2015

science
Do I need the comma after "months" here? Over the past 6 months, OvaScience has been continuously hammered down by short sellers.
September 12, 2015

chemistry
3A+2B+2C > 4D+2E 1) what is the rate of this reaction in terms of change of concentration of reactant B? - is it '1/2' ? 2) what is the rate of this reaction in terms of change of concentration of product D? please help
September 10, 2015

maths
What is the sum of 4x dollars and 4x cents. Express your answer in cents .
July 16, 2015

geomery
Triangle ABC, inscribed in a circle, has AB = 15 and BC = 25. A tangent to the circle is drawn at B, and a line through A parallel to this tangent intersects line BC at D. Find DC.
June 26, 2015

math
why is the answer to this problem? 5/3 -5/6
June 10, 2015

Anatomy & Physiology
A person is complaining of muscle weakness, numbness, paralysis and pain. Which disorder of the nervous systemis this person most likely experiencing?
June 7, 2015

Chemistry
I have no idea
June 1, 2015

chemistry
Water has a density of 0.997 g/mL at room temperature (25 C). If you have exactly 500 mL of water, what is its mass in kg?
May 4, 2015

chemistry
Bromine is a red liquid at 25°C. Its density is 3.12 g/mL. What is the volume of 28.1 g of liquid bromine?
May 4, 2015

Math
I need to find what the total commission of 14% on a $3000 sale. Can u please show in detail how to solve this. Please and thank u. :)
April 28, 2015

math
oh I am amy's brother ms. sue
April 28, 2015

math
420? ms. sue?
April 28, 2015

math
The Sugar Sweet Company will choose from two companies to transport its sugar to market. The first company charges $ 4696 to rent trucks plus an additional fee of $ 225.50 for each ton of sugar. The second company charges $ 5500 to rent trucks plus an additional fee of $ 175....
April 25, 2015

Physical Science
The answer is FIGURE IT OUT YOURSELF!
March 24, 2015

History
THANKS!!!
February 20, 2015

Maths
Check my answer please? Not sure if I did this right. Let y = f(x) be a cubic polynomial with leading coefficient a = 2 and f(-2) = f(1) = f(2) = 0. find the factored form of f. I got: f(x) = 2(x + 2)(x - 1)(x - 2)
February 18, 2015

statistics
the standard score for hours spent online at home for Minnesotans was 2.84. The mean equals 8.9 hours. Approximately how many hours do Minnesotan adults spend online at home.
February 4, 2015

algebra
michael purchased a certain number of shares of one stock for a total of $1400. The second stock was selling for 6$ less per share. Michael could have brought 3 more shares of the second stock for the same amount of money. How many shares of the first stick did michael ...
February 3, 2015

Algebra
The ratio of the corresponding side lengths of two rectangular tables is 4:5. What is the ratio of the perimeters? What is the ratio of the areas?
January 28, 2015

MATH
you sure
January 12, 2015

Graph Theory/ Algorithms / Computer science
Please delete this post! I have been able to figure it out. Thanks :)
December 17, 2014

Graph Theory/ Algorithms / Computer science
I am working on this problem from the book, Data Structures & Algorithm Analysis in C++. The problem is: 9.40 Give a polynomial-time algorithm that finds ceil(V /2) vertices that collectively cover at least three-fourths (3/4) of the edges in an arbitrary undirected ...
December 17, 2014

chemistry
It's ground state. So, yes it's D.
December 15, 2014

Chemistry
The heat of combustion of benzene, C6H6, is -41.74 kJ/g. Combustion of 3.65 of benzene causes a temperature rise of 4.41 C^o in a certain bomb calorimeter. What is the heat capacity of this bomb calorimeter? (kJ/C^o) So, I what I did was I multiplied -41.74 kJ/g and 3.65 to ...
December 15, 2014

Science
When magnesium oxide (MgO) and water (H20)react, they produce magnesium hydroxide Mg(OH)2. Magnesium hydroxide is a medicine used to treat an upset stomach. The equation for this chemical change is shown below: MgO + H20 --> Mg(OH)2 if 40.00 grams of magnesium oxide and 18....
December 11, 2014

statistics
1)According to past record the average daily sales for a sporting goods store was $3456.00. After a new advertising campaign, the manager wants to see if the average daily sales have changed. A random sample of 20 days gives a sample mean of 3655 with a standard deviation of $...
December 6, 2014

math
Thanks for the help
December 1, 2014

math
how do i divide the numerator by the denominator
December 1, 2014

math
thank you
December 1, 2014

math
how do i convert fractions to decimals and fractions to percents?
December 1, 2014

two step equation-fraction
I need step by step how to get the answer, I have been trying for hours, 4+m divided by 3 = 5/6 i have the answer just dont know the steps to get to the answer. m= -3/2 or 1 1/2
November 29, 2014

two step equation-fraction
The answer sheet I got says the answer is -3/2 or -1/1/2 Here is the equation again its 4 + 3 over 3 = 5/6
November 29, 2014

two step equation-fraction
the answer that i got on the answer sheet was 1/2 5.
November 29, 2014

two step equation-fraction
please show how you got the 2m
November 29, 2014

two step equation-fraction
please help me step by step thanks 4+m/3=5/6
November 29, 2014

College Physics
A thin rod (uniform density & thickness) has mass M and length L. It is attached to the floor at a fixed location by a friction-less hinge. The rod start at rest, balanced vertically on its hinge end. ______________________________________ 1) While balanced vertically, the ...
November 23, 2014

Physics
A thin rod (uniform density & thickness) has mass M and length L. It is attached to the floor at a fixed location by a friction-less hinge. The rod start at rest, balanced vertically on its hinge end. ______________________________________ 1) While balanced vertically, the ...
November 23, 2014

Math
Duebebdbeb
November 11, 2014

helpppppppp
Seven cats and 3 dogs weigh as much as 4 monkeys. One monkey weighs as much as 1 cat and 1 dog. How many cats weigh as much as 1 dog?
November 7, 2014

Physics please help
A cylindrical glass of water (H2O) has a radius of 3.49 cm and a height of 9.85 cm. The density of water is 1.00 g/cm3. How many moles of water are contained in the glass?
October 27, 2014

Physics
The atomic mass of a nitrogen atom (N) is 14.0 u, while that of an oxygen atom (O) is 16.0 u. Three diatomic gases have the same temperature: nitrogen (N2), oxygen (O2), and nitric oxide (NO). Rank these gases in ascending order (smallest first), according to the values of ...
October 27, 2014

Physics
The cylinder in the drawing contains 3.81 mol of an ideal gas. By moving the piston, the volume of the gas is reduced to one-fourth its initial value, while the temperature is held constant. How many moles Δn of the gas must be allowed to escape through the valve, so that...
October 27, 2014

Physics
You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 120 N, the sled has an acceleration of 1.7 m/s2 If the sled has a mass of 8.4 kg, what is the mass of your little sister?
October 13, 2014

p.e
Lol
October 4, 2014

Chemistry
Silicon carbide, commonly known as carborundum, is a very hard and abrasive substance. The compound is prepared by heating silicon dioxide in the presence of graphitic carbon: SiO2(s) + 2C(s) --> SiC(s) + CO2(g) How many grams of silicon carbide can be formed from 20.0 g of...
September 30, 2014

ratios
as a fraction
September 26, 2014

ratios
1/4 to 1/3? 1/4:1/3
September 26, 2014

question repost damon
oh okay things 3/5 was a check,
September 12, 2014

question repost damon
Since some tutors dont check back, i want to repost this to damon: what percent more than 1/3 is 3/5? It said 3/5 was wrong, and I tried but i don't know what happend
September 12, 2014

equations
3/16 * N = 24? What does N equal please help!
September 12, 2014

Mathematica
It's wrong :(
September 12, 2014

Mathematica
what percent more than 1/3 is 3/5?
September 12, 2014

Math
Use substitution to solve the system. 3x+5y=21 y=2x-1
August 27, 2014

statistics
If a milk cow in California produced a mean of 1,875 pounds of milk per month, what percentage of production would that cow be in compared to the overall production per milk cow in California from 1990 through 2005?
August 19, 2014

algebra
Thanks Sheenybeany. It was: 71 - 35= 36.
August 8, 2014

algebra
Does anyone know how to find multiples of 7 from 250 to 500?
August 8, 2014

MATH
ok got it
August 8, 2014

science
what is a form of energy that is always transferred from a warmer substance to a cooler one?
May 28, 2014

algebra
A small painting has an area of 400 c m 2 . The length is 4 more than 2 times the width. Find the dimensions of the painting. Solve by completing the square. Round answers to the nearest tenth of a centimeter.
May 20, 2014

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