Wednesday
October 1, 2014

Posts by Robert


Total # Posts: 824

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

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

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

Math
Two vehicles are moving at a velocity of 100km/hr and 60km/hr the magnitude along the road is 500km and the vehicle with a vehicle with a velocity of 100km/hr began the journey 2.5 hrs ealier.CALCULATE the distance the vehicle with 60km/hr travelled to catch up the other
May 3, 2014

math
given a Gp below, find the values of m, and the next 2 terms: m, m+3, m^2+3
May 1, 2014

math
given a GP below, find the values of m, and the next 2 terms: m, m+3, m^2+3 Help me please
May 1, 2014

math
factorise 1-16(1-y)^2 please help me
May 1, 2014

physics
explain to me the process doping. what is it? how is it done?
April 26, 2014

physics
can you please explain how the process of doping is conducted.
April 26, 2014

biology
how can i construct a dichotomous key that can be used to identify the following: mango leaf, tridax procumbent leaf, cassia leaf, grass leaf, and cassava leaf.
April 24, 2014

math
i still have some problems
April 23, 2014

math
sweets are shared equally among 20 children at a party. if there were 1 more sweet and 1 more child, each child would get 1 sweet less. how sweets were shared at the party? thats how the question ends.
April 23, 2014

math
find the inverse of the function, f(x)=x-1
April 23, 2014

math
the first three terms of a GP are the first, fourth and tenth terms of an AP. given that the first term is 6 and that all the terms of a GP are different, find the common ratio.
April 21, 2014

math
which figure must have both parallel and perpendicular sides.
April 10, 2014

math
john ordered a new sign for her store. The sign has 4 sides . It also has 2 right angles. 1 acute angle , and 1 obtuse angle . What is the shape of the sign.
April 10, 2014

math
how many weeks in 3 years, explain your answer.show the work
April 10, 2014

C++ Programming
Create a class that holds robot warriors. Each has a string for their name, a number of hit points (an float), armor (a defensive modifier(an int)), and weaponry (an offensive multiplier(another int)). You will create 5 robots with a random number in each category (500 – ...
April 7, 2014

Statistics
. A 2003 Harris Poll of 993 randomly selected American adults found that 69% believed in capital punishment (death penalty). A sample size of 1010 American adults in 2000 found that 64% believed in capital punishment. Write the hypotheses for a significance test to determine ...
March 29, 2014

Math
-12i
March 24, 2014

PRE-CALC
c) .4
March 24, 2014

statistics
Smith is a weld inspector at a shipyard. He knows from keeping track of good and substandard welds that for the afternoon shift 5% of all welds done will be substandard. If Smith checks 300 of the 7500 welds completed that shift, what is the probability that he will find ...
March 18, 2014

algebra
9x+y=11
March 14, 2014

Probability
totally lost!!
March 7, 2014

Physics 130
A 20kg child slides down a long slide in a playground. She starts from rest at a height of 25m. When she is part way down the slide at a height of 10m, she is moving at 16m/s. Calculate the mechanical energy lost due to friction.
February 25, 2014

math
It tells you how many recieved a better than average grade so... 24/50= *100
February 25, 2014

Physics 130
Thank you so much!
February 25, 2014

Physics 130
can you explain the 20sin30?
February 25, 2014

Physics 130
It says nothing about friction, so assume its frictionless.
February 25, 2014

Physics 130
you push a 15kg cart with a force of 20N, 30 degrees below the horizontal. what is the normal force? Please help test tomorrow.
February 25, 2014

physics
A 2.5kg solid homogenous ball is rolling without slipping at 3.0 meters per second to the right on a level surface. The diameter of the ball is 80 centimeters. What is the total kinetic energy of the ball? Can someone give me the equation for this?
February 24, 2014

Physics
A 2.5kg solid homogenous ball is rolling without slipping at 3.0 meters per second to the right on a level surface. The diameter of the ball is 80 centimeters. What is the total kinetic energy of the ball? Can someone give me the equation for this?
February 24, 2014

chemistry
If 1.87 g of acetic acid(CH3CO2H) reacts with 2.31 g of isopentyl alcohol(C5H12O) to give 2.96 g of isopentyl acetate(C7H14O2), what is the percent yield of the reaction?
February 23, 2014

Physics
First start with an isothermal expansion at 2.0 atm from 1.0 L to 4.0 L. If this now is adiabatically compressed back to its original volume, what is the change in internal energy here? Also what are some examples of these processes?
February 18, 2014

english
romance
February 4, 2014

physics
sin inverse of .032
January 28, 2014

physics
Voltage=12V. R1=2.0ohms and R2=4.0ohms. Find the power used by R2.
January 26, 2014

science
A car of mass 1500 kg accelerates up a hill of incline 8 degrees, increasing its speed from 4 ms to 16 ms over a distance of 90m. Assuming a total frictional resistance of 1000 N, calculte: a) the tractive effort between the wheels and the road surface b)the work done during ...
January 26, 2014

Physics
Earlier I posted the tension question I knew how to get the equation of 50*9.81 = 2 (4360) sin A. I just don't know how to find (sin A) from here.
January 20, 2014

physics
The combined mass of a man and a chair suspended at the midpoint of a rope of negligible mass is 50 kilograms. The rope is connected to a weight of 4360 newtons hanging from a massless frictionless pulley. Find the angle.
January 20, 2014

Physics -- URGENT
Estimate the force a person must exert on a string attached to a 0.200 kg ball to make the ball revolve in a circle when the length of the string is 0.600 m. The ball makes 1.40 revolutions per second. Do not ignore the weight of the ball. In particular, find the magnitude of ...
January 8, 2014

Physics AP
A conical pendulum is formed by attaching a 50 g mass to a 1.2m string. The mass swings around a circle of radius 25cm. A claculate the speed of the mass. B Calculate the acceleration of the mass. C calculate the tension in the string
December 19, 2013

grade 12 Functions
A ferris wheel with a diameter of 60m rotates at a constant speed three times every 1.5pie minutes and reaches a maximum height of 62m from the ground. if you started the ride when it is at its highest point, on what internal of time would you be more than 58m above the ground...
December 17, 2013

Physics Classical Mechanics
A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 4.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 40.0∘ with respect to the horizontal. Assume that ...
December 12, 2013

math
The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.
December 8, 2013

Math
An article in the local paper states that 30% of the students at Oak Grove Middle School earned a place on the Silver Honor Roll. If there are 920 students at Oak Grove, how many are on the Silver Honor Roll? USE A PERCENT RULER TO HELP YOU DECIDE. SHOW ALL YOUR WORK... I DONT...
October 30, 2013

physics
A stone is dropped off a cliff, the last 1.5 seconds before it reaches the ground it travels 30 meters. Find the height from which it dropped & final velocity
October 7, 2013

science of speed and acceleration
You are traveling at a speed of 42 miles in .75 hours and slow to a speed of 42 miles in 1.25 hours. What is your rate of deceleration?
September 24, 2013

science
You are traveling at a speed of 42 miles in .75 hr and slow to a speed of 42 miles in 1.25 hr. What is your rate of declaration?
September 24, 2013

College Algebra
If a ball dropped from the top of a 400 ft building to hit the ground, how long would it take in seconds?
September 8, 2013

physics
666 meters
September 1, 2013

physics
A bus accelerates from rest at 1.5m/s^2 for 12s. It then travels for 25s after which it slows to a stop with an acceleration of magnitude 1.5m/s^2. (a) Find the total distance the bus travel snd its average velocity of the trip.
September 1, 2013

physics
A bus accelerates from rest at 1.5m/s^2 for 12s. It then travels for 25s after which it slows to a stop with an acceleration of magnitude 1.5m/s^2. (a) Find the total distance the bus travels And its average velocity of the trip.
September 1, 2013

math
my domain is 1,2,3,4,5,6 and my range is 180,165,150,135,120,105, the domain is increasing by 1 and the range is decreasing by 15 but I do not know how to write the function
August 23, 2013

algebra!!!! please help me!!!!
The smallest possible positive value of 1−[(1/w)+(1/x)+(1/y)+(1/z)] where w, x, y, z are odd positive integers, has the form a/b, where a,b are coprime positive integers. Find a+b.
June 14, 2013

Pre-Calculus
A gardener has 100' of edging. She wants to use it to enclose a 130 square foot rectangular area; she does not have to use up all of the edging. What are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: If the length of the ...
May 30, 2013

GEOGRAPHY
Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain. The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000’ and the SAR is 3.3°F/...
May 26, 2013

vectors problem!!!! help!!!!
thanks sir!!!!
May 26, 2013

vectors problem!!!! help!!!!
Vectors u=2i+9j+0k and v=13i+18j+0k. What is the value of |u×v|?
May 26, 2013

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