Saturday
February 6, 2016

Posts by Eric

Total # Posts: 739

math
A pair of dice is rolled.What is the probability that the sum of the pips is either an even number on a multiple of 3? total number of space is 36.
February 4, 2016

Math
An enclosed rectangular garden is 6 meters by 15 meters. Additional fencing within the garden can divide it into three smaller plots, two of them square and one rectangular. What is the least number of meters of additional fencing that is needed?
January 28, 2016

Algebra
Tell whether the lines for each pair of equations are parallel perpendicular of neither y=-3x+7 -2x+6y=3 Tell whether the lines for each pair of equations are parallel perpendicular of neither y=(-1/5)x=6 -2x+10y=5
January 18, 2016

Algebra (Urgent)
There should be three answers:) Thanks for your help LadyPhantomhive
January 18, 2016

Algebra (Urgent)
Which of the following lines are perpendicular to the line y=-1/4x+6 (you may choose more than one answer) 4x-y=2 y=4x 4x+y=6 1/4x-y=6 -4x+y=3
January 18, 2016

Physics
Three positive point charges are located at the corners of a rectangle. Find the electric field at the fourth corner if q1 = 5 nC, q2 = 6 nC, and q3 = 7 nC. The distances are d1 = 0.6 m and d2 = 0.2 m. (Let the positive x-direction be to the right, and the positive y-direction...
January 18, 2016

Physics
In the bloodstream, an erythrocyte (red blood cell) of mass m moves with velocity v to the right. Ir collides head-on with a leukocyte (white blood cell) of twice its mass moving to the left with three times its speed. After the collision, the became stuck together. What would...
December 14, 2015

Physics
A spring with k=1400N/m is firmly anchored to the bottom of a swimming pool. A diver in full SCUBA gear with total mass of 100kg and density of 0.65g/cm3 holds on to the top of the spring. The system reaches a new static equilibrium. After the print is elongated by a length ...
December 14, 2015

Physics
Imagine a horizontal spring with an elastic constant of 26.5 N/m, held in place just above an air table. If a 2.00 kg mass traveling at 1.50 m/s slams axially into the end of the spring, by how much will it be compressed in bringing the mass to rest?
November 17, 2015

Science
25.6g
November 11, 2015

Introduction to computers
You call the help desk to report a problem you are having on your computer. The technician asks you what operation system you are running. You know it is windows 7 but you forgot which version . How can you find out.
November 10, 2015

Introduction to computers
Which Microsoft operating system started the process of authenticating users with a username and password
November 10, 2015

Introduction to computers
The command prompt found on Windows 7 and Windows 8 is very similar to the interface of what past operation system.
November 10, 2015

Chemistry
Is nickel 2 chloride an anion or cation ?? Is sodium chloride an anion or cation ?
October 25, 2015

physics 11
A swimmer swims perpendicular to the bank of a 20.0 m wide river at a velocity of 1.3 m/s. Suppose the river has a current of 2.7 m/s [W]. (a) How long does it take the swimmer to reach the other shore? (b) How far downstream does the swimmer land from his intended location?
October 20, 2015

math
From cape to home is 500km I drive from Home at a 100km/h how long will it take in hours
October 20, 2015

Algebra 2
Solve the following sequence systems algebraic ally x+2y=17 x-y=2
October 13, 2015

Algebra 2
Create an explicit equation for each recursively defined sequence below a1=17,an+1=an-7
October 13, 2015

Algebra 2
x-3/x=3/5
October 13, 2015

physics
While John is traveling along a straight interstate highway, he notices that the mile marker reads 256 km. John travels until he reaches the 144 km marker and then retraces his path to the 173 km marker. What is John’s resultant displacement from the 256 km marker? How ...
October 13, 2015

Algebra 2
Solve each system 3x-9y=3 and 2x=16-y
October 11, 2015

Algebra 2
Solve each system 6x-2y=10 and 3x-2=y
October 11, 2015

Algebra 2
For the function f(x)=square root 3x-2 find the value of the expression below. What value of x makes f(x)=6
October 11, 2015

Kitondo boys
A triangle has vertices X(2,2) ,Y(4,2)and Z(3,4).The triangle is enlarged by a scale factor 2 through the origin.What are the coordinates of the image?
September 28, 2015

Physics
Basically... distance is 4 km Takes 4 min to go down river Takes 6 min to come up How fast is the river?
September 22, 2015

Statistics/probability
You are considering two mutual funds for your investment. The possible returns for the funds are dependent on the state of the economy and are given in the accompanying table. State of the Economy Fund A Fund B Good 20% 40% Fair 10% 20% Poor -10% -40% You believe that the ...
September 13, 2015

Physics-Trajectory
A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's ...
September 11, 2015

Physics
Three forces are exerted on an object placed on a tilted floor. Forces are vectors. The three forces are directed as shown in the figure. If the forces have magnitudes F1 = 2.0 N, F2 = 17.0 N and F3 = 15.0 N, where N is the standard unit of force, what is the component of the ...
September 11, 2015

Physics
The components of vector A⃗ are Ax = + 3.90 and Ay = -4.00. What is the angle measured counterclockwise from the +x-axis to vector A⃗ ?
September 11, 2015

Physics-VECTORS
Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?
September 11, 2015

Physics
A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is v=8t cm/s and the Y-velocity is V=30cm/s ...
September 11, 2015

Chemistry
a) Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 degrees Celcius, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 13.8 g of biphenyl in 32 g of benzene? b) Express...
August 29, 2015

Math
Interval it exists on: (5-x)y"+3xy'-y=1 y(0)=2
August 8, 2015

english
How can animated jungle animals, sea creatures, fairies, cars and other non-human characters can be used to represent race?
August 3, 2015

biology
lymphocyte
July 9, 2015

nutrition
Which of the following is one of the ways that the endocrine system interacts with the digestive system? a) Eliminates wastes generated in the body b) Transports nutrient to cells c) Controls the passage of food in the blood stream d) Secretes hormones that regulate how much ...
July 9, 2015

nutrition
Which is the best way to balance your dietary choices? a) If you overeat at lunch, you should skip dinner. b) If you eat two slices of pizza at lunch, you should walk an extra mile after dinner. c) If your dinner has no vegetables, you should eat a cereal containing fiber at ...
July 9, 2015

nutrition
I say it is D
July 8, 2015

nutrition
Which is the best way to balance your dietary choices? a) If you overeat at lunch, you should skip dinner. b) If you eat two slices of pizza at lunch, you should walk an extra mile after dinner. c) If your dinner has no vegetables, you should eat a cereal containing fiber at ...
July 8, 2015

nutrition
Which of the following is one of the ways that the endocrine system interacts with the digestive system? a) Eliminates wastes generated in the body b) Transports nutrient to cells c) Controls the passage of food in the blood stream d) Secretes hormones that regulate how much ...
July 8, 2015

Math
there is a swimming pool, 3 meters in width and 4 meters in length. the owner wants to built a uniform deck around the swimming pool which is 3 times of the area of the pool. what's the width of the deck?
June 16, 2015

Differentail Equations
I cant figure out how to do this type of problem! Consider the first order differential equation y′+(x/(x^2−4))y=(e^x)/(x−9) For each of the initial conditions below, determine the largest interval a<x<b on which the existence and uniqueness theorem for...
June 6, 2015

History
How did the success of the civil rights movement and abolishment of slavery open doors to the election of the first Black American President of the United States, Barack Obama? Can I have some examples?
June 3, 2015

Physics
A massive steel cable drags a 20kg block across a horizontal, frictionless surface. A 100N force applied to the cable causes the block to reach a speed of 4.2m/s in a distance of 2.1m . What is the mass of the cable?
May 30, 2015

english
Cuba is one of the few remaining communist countries in the world. Since the collapse of the Soviet Bloc in 1990, however, the country has promoted capitalism in the form of tourism in order to stimulate the economy.
April 28, 2015

pre - CALCULUS
the solution would be: ( det 8 1 det 2 8 24 3 6 24 _____ ______ det 2 1 2 1 6 3 , 6 3 ) which is (0/0, 0/0) The zero in the denominator indicates that the system can not be solved using cramer's rule and is therefore not consistent and independent. I have not read this but...
April 11, 2015

math
a swimming pool has an area of 40 square metres and a perimeter of 26 metres what is the length and width of the swimming pool and is it possible for a pool to have the same area but a larger perimeter?
April 11, 2015

geometry
Given: AC perpendicular BD and AB congruent CB. Prove AD congruent CD. It is a kite figure. I need statements and reasons. Problem states Plan: prove triangle ABE congruent CBE. The use congruent corresponding parts AE and CE to show right triangle AED congruent CED. AD and CD...
April 10, 2015

geometry
if m<1 = 60 degrees, then m<3 + m<5 = what? | \2| 1 \| 3 ------- | ------ 6 |\ 4 |5\ | what is the transitive property of angle congruence?
April 6, 2015

geometry
use diagram given: m<XWY = 2x+5, m<YWZ = 5x-79, and m<XWZ = 122 degrees. m<YWZ= what? (x) (y) (w) (z) connect x to w, w to z, w to y Does WY bisect ,XWZ? Please show work. Th u
April 6, 2015

Physicsl
What is the magnitude of the electric field a distance 3.5mm from an electron?
April 5, 2015

Trigonometry
1. y = 2(sin(4x - pi/8)) + 1 2. y = 4(sin((2pi/3)x - 2)) - 1 3. y = 4(sin(2x + pi/3)
April 4, 2015

math
what is 4(y*y)? is it 4y*4y, or can u not distribute, and why?
April 1, 2015

Statistics
initial dose 291.8529. 25% mark in 5.1 hours
March 13, 2015

science
What molecule found in the cell membrane serves as a communication molecule as well as involved in active transport?
March 8, 2015

physics
the work done is by lifting it up so you can use mgh The tricky part here is that you need to consider where the center of gravity is and it would be the center of the log so the COG is lifted half of the total length of the log 100kg x 9.8 N/Kg x 1.65 meters
March 5, 2015

math
Isaiah and Andy had a total of 560 trading cards. After Isaiah gave1/9 of cards to Andy they had an equal # of trading cards. How many more cards did isiah have than Andy at the beginning?
February 22, 2015

math
Oh, thanks!
February 17, 2015

math
In terms of set notation.
February 17, 2015

math
I'm looking for the symbol ', and can you send me the link to it
February 17, 2015

math
Thanks, but there is no definition for the symbol '
February 17, 2015

math
I'm doing my math hw, what does the sign ' mean for sets? Thanks
February 17, 2015

Math
I dont no
December 18, 2014

Calculus Please Help
Can you please explain these two questions to me? Suppose the population size of a predator is given by P (x) = 0.006x2 + 0.005x, where x represents the population of its prey. If the population of the prey is 10,000 at the first of January and is reduced to 6,000 by May 1 of ...
December 5, 2014

Math
Nell made a pizza. she cut the pizza into fourths. then she cut each fourth. nell and her friens ate 6 of the smaller pieces of the pizza. What fraction of the pizza did Nell and her friends eat? What fraction of the pizza did Nell and friends Not eat?
December 4, 2014

physics
A roller coaster cart of mass m = 201 kg starts stationary at point A, where h1 = 27.7 m and a while later is at B, where h2 = 7.1 m. The acceleration of gravity is 9.8 m/s 2. What is the potential energy of the cart relative to the ground at A? Answer in units of J. (201*27.7...
November 16, 2014

IBMY History 7
What can we learn from the crusades?
November 11, 2014

East and Southeast Asian
D A C A B B B D A C C D A C
November 7, 2014

Math help!
Yes your answer is correct. 9^2 * 12^2 = 225. 225 squared is 15.
October 30, 2014

math
Katrina is studying the effect of foreign substances on bacteria populations. If she introduces a beneficial substance, such as food, the bacteria population grows. If she introduces a harmful substance, such as a poison, the bacteria population decreases. The function f(x) = ...
October 30, 2014

Math
I'm sorry but I do not follow. The question asks that (out of two dice) given the first dice is even - In which the first die will therefore be 2,4, or 6 - where 6 is the only option. And so what is the probability that the sum of the two dice will equal 12 given the first...
October 20, 2014

Math
If the first dice yields an even number, what is the probability that the sum of the two dices will be equal to 12? 1st Die P(even) = 3/6 = 0.50 P(6|even) = 1/3 = 0.333 2nd Die P(6) = 1/6 = .1667 So P(12) = 0.33*0.1667 ?
October 20, 2014

Computer programming
How to build a simple game in java that will allow a player to attempt to guess a randomly generated number between 0 and 10. The player can continue guessing the number until they get it right. The game should be able to do these things: 1. Game should remember each choice ...
October 6, 2014

Chem HELP!!
Which one of the following sets of quantum numbers can correctly represent a 3p orbital? a) (n = 3 l = 1, ml = 2) b)(n = 1, l = 3, ml = 3) c) (n = 3, l = 2, ml = 1) d) (n = 3, l = 1, ml = -1) e) (n = 3, l = 0, ml = 1)
October 5, 2014

Math
You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physic. You purify a sample of 2 grams.One of you colleges steals half of it, and 3 days later you find that 0.1 grams of the radioactive material is still ...
September 16, 2014

PHI 208 Week 3 Readings Quiz
Which one of these is not a principle that can be drawn from the Categorical Imperative? Act as if the maxim of your action were to become by your will a universal law. Act that you use humanity, whether in your own person or in the person of another, always at the same time ...
September 14, 2014

algebra 2
Let x = hourly wage 40x + 5(1.5x) = 475 40x + 7.5x = 475 47.5x = 475 x = $10/hour
August 24, 2014

Calculus
What is the derivative of 3sin(4x)? I have no idea where to begin!!!
August 24, 2014

algebra
(angle 1) + (angle 2) + (angle 3) = 180 Let's make an angle Q = (angle 1) + (angle 2). SO... Q + (angle 3) = 180 AND (angle 3) = Q - 45. SO... Q + (Q - 45) = 180 2Q = 225 Q = 112.5 Going back to the equation Q + (angle 3) = 180 or by rearranging it: (angle 3) = 180 - Q, if...
August 24, 2014

Algebra
thanks for the help!
August 22, 2014

Algebra
Given that xy = 3/2 and both x and y are nonnegative real numbers, find the minimum value of 10x + 3y/5
August 22, 2014

statistics
a rocket club makes its own rockets. The rockets go to a mean height of 1100 feet with a standard deviation of 60 feet. if the club fires 36 rockets, what is probability that the mean heights of the rockets will be greater than 1080p feet
July 13, 2014

Math - Algebra2
Also, you can tell that the first one is DIVERGENT because the numbers are diverging from one another! In other words, they are getting farther and farther apart The second one is CONVERGENT because all the numbers are converging to a certain number...in this case they are all...
May 16, 2014

Math - Algebra2
state whether the series is convergent or divergent 1) 3 + 12 + 48 + ... 2) 4 + 4/5 + 4/25 + ...
May 16, 2014

accounting II
i am completely stuck on this! 5. Manufacturing statements and cost behavior Tampa Foundry began operations during the current year, manufacturing various products for industrial use. One such product is light-gauge aluminum, which the company sells for $36 per roll. Cost ...
April 30, 2014

accounting II
oh, my apologies
April 28, 2014

accounting II
3. Definitions of manufacturing concepts Interstate Manufacturing produces brass fasteners and incurred the following costs for the year just ended: Materials and supplies used Brass $75,000 Repair parts 16,000 Machine lubricants 9,000 Wages and salaries Machine operators 128,...
April 28, 2014

accounting
i need help working through this! i am stuck. 3. Definitions of manufacturing concepts Interstate Manufacturing produces brass fasteners and incurred the following costs for the year just ended: Materials and supplies used Brass $75,000 Repair parts 16,000 Machine lubricants 9...
April 28, 2014

Chemistry
so then you would take 1.48 M times 42mL, then take that number and divide by .49 M, then convert to mL?
April 20, 2014

Chemistry
How many mL of 0.49 M HCl will neutralize 42 mL of 1.48 M NaOH?
April 20, 2014

Cultural Anthropology
how are traditional anthropological fieldwork techniques used in applied anthropology? How does applied anthropology benefit modern social problems? Thank you!
April 11, 2014

Cultural Anthropology
Contrast the four types of subsistence strategies, be sure to include differences in lifestyle, kinship, property, ownership, distribution of resources and division of labor. Thank you!
April 11, 2014

chemistry help~Please!!!
What are the Ka and/or Kb value for 1M ZnCl2 Show work please!!!
April 11, 2014

engineering
A certain amount of radioisotope (986.8 x 10-9 kg) is used to make the dial of a watch glow in the dark. If the half-life of this isotope is 3.69 x 103 years, how many kilograms of the radioisotope will disappear while the watch is in use for fifty years?
March 30, 2014

Calculus
When dy/dx=(x-6)^½ what does y equal?
March 29, 2014

physics
A plane is found by radar to be flying 5.9 km above the ground. The angle of elevation from the radar to the plane is 78.6°. Ten seconds later, the plane is directly over the station. Find the speed of the plane, assuming that it is flying level.
March 13, 2014

Single vs double replacement reactions
How would you compare a single replacement reaction to a double replacement reaction?in laymans terms?
February 26, 2014

Decomposition reaction
List the number of reactants and the number of products in a decomposition reaction; 2H2O(I)=2H2(g)+O2(g)
February 26, 2014

Synthesis reaction
What are the number of reactants and the number of compounds in; 2H2(g)+O2(g)=2H2O(I)
February 26, 2014

american government
can anyone help? I think it is c.
February 21, 2014

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