Wednesday
August 24, 2016

Posts by peter

Total # Posts: 977

math
Mr. Vasil drove 405 miles on 15 gallons of gas. How many miles can he drive on 1 gallon?
August 23, 2016

Math
Denise bought some lace to sew around 3 square pillows. Each pillow measured 4 incheson each side. How many feet of lace did denise need for all 3 sides?
August 18, 2016

Science
Explain the measures toreduce the problems associated with mining and extraction of metal
August 3, 2016

statistics
A jar contains 2 red balls, 2 blue balls, 2 green balls and 1 orange ball. Balls are randomly selected, without replacement, until 2 of the same colour are obtained. Calculate the probability that more than 3 balls must be selected.
July 2, 2016

math
find the number that is twelve and a quarter times greater than its reciprocal<x
June 29, 2016

CALCULUS
State the intercepts, domain and range for y= |0.5x^2-2|.
June 21, 2016

science
percentage of water of crystallization in Fe(NO3)2
June 14, 2016

algebra 1
I'm so sorry, I made a mistake in the question!! It is the best measure of center for second period!! Shall I repost?
June 2, 2016

algebra 1
There is no outlier. I added one and the interquartile changed.
June 2, 2016

algebra 1
A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first-, second-, and third-period classes are as follows: First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0 Second period: 3, 2...
June 2, 2016

Algebra 1
Wait please! I need another website! I still don't necessarily understand. I don't see any outliers. I know that an outlier would affect the median
June 2, 2016

Algebra 1
Hmm, then would it be D? Also, I am not guessing I am just unsure
June 2, 2016

Algebra 1
A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first-, second-, and third-period classes are as follows: First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0 Second period: 3, 2...
June 2, 2016

Calculus
An observer 150 feet from point C, where a weather balloon has been released. The balloon rises vertically at a rate of 8ft/sec/. At the very instant the balloon is 250 above ground how far is it from the observer? How Quickly is it moving away from the observer at that moment...
May 18, 2016

PHYSICS
A 6.00g bullet is fired horizontally into a 1.50kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is .30. the bullet remains embedded in the block, which is oserved to slide .25m along the surface before stopping. ...
May 10, 2016

Math
An object's velocity after t seconds is v(t)= 38-2t feet per second. a. How many seconds does it take for the object to come to a stop (velocity = 0)? b. How far does the car travel during that time? c. How many seconds does it take the car to travel half the distance in ...
April 30, 2016

Math
Can you define the variable, four more than a number divided by 2 is ten.
April 22, 2016

life orientation
Give 3 human rights violation or discrimination
April 17, 2016

Physics
A girl standing on a stationary uniform plank 10m long. The plank can move with negligible friction along the surface of the water. A) the girl walks along the plank with a velocity of 2ms-1 relative to the plank until she reaches the end of the plank. The centre of mass of ...
April 7, 2016

Physics
The activity of a sample of 31Si (T1/2 = 9.43×103 s) is 7.88×105 decays per second. What is the mass of sample present?
March 26, 2016

maths
A vehicle travels equal distances at 60km/h and 90km/h.calculate its average speed
March 21, 2016

algebra 1
PLEASE HELp
March 21, 2016

algebra 1
Given the data set (5, 9), (13, 12), (23, 16), which of the following equations best represents a line of best fit? y = three fourthsx − 7 y = four fifthsx + 7 *** y = three over twox + 7 y = two thirdsx − 7
March 21, 2016

Math
Determine whether or not the given linear transformation is invertible. If it is invertible, compute its inverse. (If the transformation is not invertible, enter IMPOSSIBLE. Use theta for θ.) Tθ:R2→R2, the reflection of the plane in the line formed by the angle...
March 10, 2016

Linear Algebra
Find the 3x4 matrix associated with the derivative transformation D:P3→P2 with respect to B = { 1, x, x2, x3} and B' = {1, x, x2}.
March 10, 2016

Pigskin geography week number 20
Which team will visit a city within its own state for a game
February 23, 2016

Math
A clock starts at 12:59. What time is it after the minute hand rotates 24 degrees?
February 18, 2016

Physics
A uniform electric field with a magnitude of 6100 V m−1 points in the positive x direction. Find the change in electric potential energy when a +14 μC charge is moved 5 cm in the positive x direction. Answer in joules.
February 5, 2016

Auburn
How do you write 234,567 in roman numeral's
February 3, 2016

Math
The cost of fencing a square field at ₹ 27.50 per metre is ₹55000 . Find the cost of reaping the field at ₹45 per 100 metre² .
January 29, 2016

Geography,maths literecy,life-science,agriculture,LO,sepedi and english
Which career can suit me?
January 13, 2016

Math
Rafi had a board that was 15 1/2 FEET long he cut three pieces off the board that are each 3 and 7/8 feet long how much of the board is left
January 12, 2016

physic
If the gravitational force f is given by f= gm, m2/r^2 derive the dimensions of the constant g.
January 9, 2016

physics
A clown is rocking on a rocking chair in the dark. His glowing red nose moves back and forth a distance of 0.42m exactly 30 times a minute in a simple harmonic motion. (a) what is the amplitude of this motion? (b) what is the period of this motion? (c) what is the frequency of...
December 12, 2015

physics
How much would the time keeping of a pendulum clock be affected by taking it to the moon? Gravity is 1.6m/s ^2, compared with 10m/s ^2 on the earth.
December 12, 2015

physics
What force is required to slide a 200 kg box up a 25 degree incline if the coefficient of friction is 0.60?
November 24, 2015

math
six years ago, jim was four times as old as Fe. In four years, he would be twice as old as fe.How old are they now?
November 23, 2015

Physics
The interior of a submarine located at a depth of 50 m in seawater is maintained at sea-level atmospheric pressure. Find the force acting on a window 20 cm square. The density of seawater is 1.03 × 103 kg/m3
November 16, 2015

swagodimo
Calculate the number of moles of hcl(aq)added to sodium thiosulphate
November 15, 2015

Physics
If the specific heat of ice is 0.5 cal/g degree celsius, how much heat must be released from 5 g of water at 0 degree celsius to change it to ice at -4 degree celsius?
November 14, 2015

Algebra
2. X - 7 > 10 X > ____ 3. 3x ≤ 21 X ≤ ____ 4.5a - 2 < 18 A<____ 5. 2t+8 ≥ -4(t+1) T ≥ ____ Could someone Please help me I have no idea how to do this
October 28, 2015

Physics
A gun shoots a bullet at 1200 m/s at an angle of 600 above the horizontal. Neglecting air resistance, determine: a.) its time of flight b.) its range
October 7, 2015

Algebra
Rewrite the set {x|2Ex<33:xEN} in roster form
October 5, 2015

Ochem
Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment
October 4, 2015

Organic Chemistry
Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment
October 4, 2015

Organic Chem 2
Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment
October 4, 2015

Algebra
How do I turn this into a algebraic expression, eight more than six times a number added to one more than nine times the number
September 23, 2015

MATH
Factorise 3k+1-3kh-h
September 13, 2015

Physics
Thanks Damon!!
September 13, 2015

Physics
The driver pushes the accelerator pedal as far down as possible. The car does not accelerate above a certain maximum speed. Explain the reason for this in terms of the forces acting on the car.
September 13, 2015

algeb
2) 100%-15% = 85% 85/100 = 0.85 26.86/0.85= sales price
September 13, 2015

Physics
A 2000 kg starts from rest and gains a velocity of 20 m/s in 5 s. What force wad applied on it?
August 29, 2015

chs
Two wires support an electricity pole. if the wires make angles of 58°and 67° with the ground and |AB|=21m, calculate the lengths of the wires
August 16, 2015

Data management
A card is drawn from a shuffled deck of 52 cards. What's th probability that the card is a spade or a face card?
July 29, 2015

Math
You have three toonies and two loonies in your pocket. You pull one coin out and then pull out another (without replacing the first) 1) show the total of all the probabilities is 1 2) show using combinations that part 1) is correct
July 14, 2015

math
5t^2-7t=1 find exact solution
July 2, 2015

chem
A 0.158 g sample of magnesium metal reacts completely with 100.0 mL of 1.0 M hydrochloric acid in a coffee cup calorimeter. The temperature of the solution rose from 25.6°C to 32.8°C. What is ∆Hrxn? Assume the specific heat of the solution is 4.184 J/mol-K and ...
June 25, 2015

socialology
Describe a situation in which you might see a gesselschaft community partnered with mechanical solidarity.
June 16, 2015

english
"I hope this song will help you to bring your country back to its stage it was and motivate to develop it more further. " this dialogue
May 6, 2015

english
"I hope this song will help you to bring your country back to its stage it was and motivate to develop it more further. " Since the logic of the dialogue is not correct; write a short reply going against him. ( DEBATE )
May 6, 2015

math
prove that: 4cosec2ACot2A=cosec^2A - sec^2A
May 6, 2015

Maths
A pool is 12m long and 7m wide it is surrounded by a 3m paved area on all sides the whole complex is enclosed by a 2m high fence what is the total length of this fencing
May 4, 2015

Algebra
a car driver accelerates to a speed of 35 miles per hour and then takes her foot off the gas pedal even though she does not press the brake pedal at any time she eventually rolls to a stop which of the following most likely causes the car to come to a stop
April 17, 2015

physics
B C C C D B A C B D B D C A C B B D A D
April 17, 2015

Math
Prove that 140 * 141 * 142 * ... * 159 * 160 is divisible by 4321.
April 15, 2015

HELP MEH PLS
I actually need help with number 1 1. a. fluorescence b. rarefaction c. radioactivity** d. electromagnetic Could you tell me if this is right?
April 1, 2015

Geo
Indonesia & Malaysia
March 7, 2015

science
when astone is thrown slighty above amoving lorry .where will the stone fall? .2.when loam soil is mixed with sandy soil .what will not change?
February 26, 2015

physics
Calculate the total resistance for a 650 ohm, a 350 ohm, and a 1000 ohm resistor connected in series.
February 4, 2015

math
given thatvABCD is a parallelogram where A(1,2),B(4,4), and C(6,2) determine the coordinates of D using vector?
January 29, 2015

chemistry
What amount of carbon dioxide is produced per kJ of heat produced in burning ethene, C2H4?
January 23, 2015

Calculus
Also how would I figure out how fast the pile is increasing? ..I don't really understand whats the difference from finding the actual height after five minutes or how fast it is increasing.
December 31, 2014

Calculus
How would I find out what the height of the pile would be after 5 minutes? A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. The volume formula for a right ...
December 31, 2014

Math
Waitttttttt, nevermind I figured it out :) its 4
December 21, 2014

Math
If 12 ft^2 of material is available to make a box with a square base and an open top, find the largest possible volume of the box. 2 ft3 4 ft3 5 ft3 8.5 ft3 9 ft3 the whole ft^2 and ft^3 throws me off..can you help
December 21, 2014

linear approximation
a) Find the linear approximation of the function f(x)=4cos(3x^2) near x = 0 b) Use the approximation found in part (a) to estimate the value of f(pi/20)
December 7, 2014

chem
Draw the two chair conformers of cis-1-ethyl-4-isopropylcyclohexane
December 3, 2014

chemistry
Why do alkenes but not alkanes exhibit cis-trans isomerism?
December 3, 2014

Physics
determine the submerged depth of a cube of steel 0.3m on each side floating in mercury given the specific gravities of steel and mercury as 7.8 and 13.6 respectively.
November 27, 2014

Geometry
no clue
November 26, 2014

Physics Collision problem
Np Bro
November 25, 2014

Physics Collision problem
your process is wrong I ended up with the wrong answer. of 2.9*10^5 instead of THE REAL ANSWER 3.4*10^5 and 21 degrees. thanks for nothing
November 25, 2014

Physics Collision problem
A 238U nucleus is moving in the x-direction at 4.8×105m/s when it decays into an alpha particle (4He) and a 234Th nucleus. The alpha moves at 1.2×107m/s at 36∘ above the x-axis. a. Find the speed of the thorium nucleus. v= b. Find the direction of the motion ...
November 25, 2014

Managerial Economics
Mirk Labs is a pharmaceutical company that currently enjoys a patent monopoly in Europe, Canada, and the U.S. on Zatab, an allergy medication. The global demand for Zatab is Qd= 15.0- 0.2 P where Qd is annual quantity demanded (in millions of units) of Zatab, and P is the ...
October 30, 2014

Managerial Economics
Mirk Labs is a pharmaceutical company that currently enjoys a patent monopoly in Europe, Canada, and the U.S. on Zatab, an allergy medication. The global demand for Zatab is Qd= 15.0- 0.2 P where Qd is annual quantity demanded (in millions of units) of Zatab, and P is the ...
October 29, 2014

Math
There are some animals in a farm.there are 50 goats. the ratio of goats to sheeps is 1:4. find sheep
October 27, 2014

Math
Thank you Don :)
October 27, 2014

Math
1/4 of Peter's money is the same as 2/3 of James money, James has $60. How much do they have altogether?
October 27, 2014

physics
A Titan IV rocket has put your spacecraft in a circular orbit around Earth at an altitude of 230 km. Calculate the force due to gravitational attraction between the Earth and the spacecraft in N if the mass of the spacecraft is 2300 kg.
October 25, 2014

Physics 203
Car 1 has 6 times the mass of car 2, but only 0.4 as much kinetic energy. What is the ratio between the speeds of the two cars (v1/v2)? You must type your answer as a numerical value.
October 8, 2014

ethics
a. Faith in the future.
August 25, 2014

economic
Is the south african government is not providing enough welfare or subsidies to the poor and underpriviledged?
August 19, 2014

maths
A motorist travels 120 miles to his destionation at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour.His average speed for the entire trip is 1. 53 miles per hour 2. 52 miles per hour 3. 50 miles per hour 4. 48 ...
August 13, 2014

maths
answer 3. 3 inches
August 13, 2014

maths
A snapshot measures 2 1/2 inches by 1 7/8 inches. It is to be enlarged so that the longer dimension will be 4 inches.The length of the enlarged shorter dimension will be 1. 2 1/2 inches 2. 2 5/8 inches 3. 3 inches 4. 3 3/8 inches 5. 3 5/8 inches
August 13, 2014

maths
If a @ b is defined for all positive integers a and b by the equation a @ b = a(b-a),then 4 @ (3 @ 5)= 1. 2 2. 6 3. 8 4. 22 5. 28
August 13, 2014

maths
If r boxes of rubber bands cost d dollars,how much do 7 boxes cost at the same rate? 1. 7dr 2. 7d/r 3. d/7r 4. r/7d
August 11, 2014

maths
What is the maximum number of cubes with a side of length 1/3 that can fit inside a cube with a side of length 1 ? 1.3 2.9 3.18 4.27
August 11, 2014

maths
Beth is two years older than Julio.Gerald is twice as old as Beth.Debra is twice as old as Gerald.The sum of their ages is 38.How old is Beth? (1)2 (2)3 (3)5 (4)6 (5)8
August 10, 2014

maths
the base: 7-3=4 the high: 5-1=4 so, base x high / 2 4 x 4 /2 = 8 answer b, am i right
August 10, 2014

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