Thursday

December 18, 2014

December 18, 2014

Total # Posts: 542

**Mechanics**

Light travels at 3*10^8 m/s. After how many seconds can the lighting reach a distance of be heard 2310 meters away from where it happened?
*October 19, 2011*

**physics**

The pilot of a plane looks at her speedometer to see that she is traveling at 165 km/h and she is heading north. An observer on the ground looks at the plane and it appears to be going 145 km/h. What is the velocity of the wind that is affecting the plane?
*October 19, 2011*

**physics**

a jet airliner moving initially at 3..00X10^2 mi/h due east enters a region where the wind is blowing 1.0 x 10^2 mi/h in a direction 30 degrees north of east. A) find the components of the velocity of the jet airliner relative to the air. b) find the components of the velocity...
*October 2, 2011*

**scientist**

why do scientists do experiments
*September 14, 2011*

**math**

im sorry i wont do that again
*September 7, 2011*

**math**

3/8x + 16 = 9/8x - 20 what is x ? please help!!!!
*September 7, 2011*

**math please help me**

thank you
*September 7, 2011*

**math**

please answer me
*September 7, 2011*

**Algebra(Check Please?)9nth Grade**

3.) 3x + y = -8 My answer: Y=-8 + -3x 4.)2x - y = 11 My Answer: y=2x + -11 5.) 4x + -8y = 24 My answer: y = 32x + -192 6.) 15x + 10 = -14 - 9x My answer: NEED HELP WITH THIS ONE.
*September 7, 2011*

**Algebra**

Thank you so much! How did you get those though? I cant seem to figure it out...
*September 7, 2011*

**Algebra**

Check these answers? ? 3x + y = -8 My answer: y=-11 2x - y = 11 My Answer: y=13
*September 7, 2011*

**Algebra**

Is that the answer? Thank you so much<3
*September 7, 2011*

**Algebra**

how would you work this out? C=3A + 3b
*September 7, 2011*

**Reading**

What are 2-3 questions that a critical reader and thinker should be asking himself or herself about logical deductive and inductive reasoning when reading arguments? These questions should be questions that will help increase comprehension and recall.
*August 30, 2011*

**Maths**

I am just starting to learn algebra. My question is -2n-(9-10n)=? I have to simplify this. I think it is 8n-9 Can you please tell me if this is correct or how to do it? Thanks a lot
*August 22, 2011*

**French**

this really helped me out too,!
*August 18, 2011*

**math**

What i am asking is how would i measure out 2.5cm diameter onto grid paper which my backyard design is on?
*August 7, 2011*

**math**

I have a math assignment and i am meant to do i backyard design and i have to fit in a fishpond which has an outside diameter of 2.5 and a water depth of 40cm. how should i measure it out into the backyard design?
*August 7, 2011*

**french**

is it true or false that a qui esta la means whos there
*June 20, 2011*

**Physics**

A horizontal massless beam of length 1 m is supported at two points. One fulcrum is at one end of the beam, point "O", and the other at the 0.60m point "P". Two equal weights are placed on the beam, one at O and one at point Q at distance x from O. Find the...
*June 20, 2011*

**Physics**

A 2000kg car begins from rest and rolls 50.0m down a frictionless 10 degrees incline. If there is a horizontal spring at the end of the incline, what spring constant is required to stop the car in a distance of 1.00m?
*June 14, 2011*

**physics **

87m
*May 27, 2011*

**trig FAR ROCK**

(X t 2)3
*May 5, 2011*

**algebra**

2x-3y=2 x+2y=-20 solve each system by sudstitution
*April 29, 2011*

**trig**

an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.
*April 23, 2011*

**math**

how do you find 1/4 of 48
*April 11, 2011*

**chemistry **

Potential of a cell is 0.1776 volts Pb|Pb2+(??M)||Pb2+(1.0M)|Pb I know i have to use Nernst's equation .. i just have no clue how to attempt this :S
*March 29, 2011*

**Chemistry **

so if it doesn't react.. is it colorless? because hexane is colorless.. ?
*March 29, 2011*

**Physics**

An infinite thread of charge density lamda lies along Z axis. The potential difference between the points A(4,3,4) and B (3,4,0)is?
*March 21, 2011*

**Physics**

Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 972 N at an angle of 28 degrees with respect to the direction in which the truck is headed, while the other car pulls with a force of 1401 N at an angle of 23 degrees...
*March 17, 2011*

**physics - energy**

a 60 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?
*March 5, 2011*

**physics - energy**

a 70kg man is walking at a speed of 2.0 m/s. what is his kinetic energy?
*March 5, 2011*

**Algebra**

If I buy 2 apples and 6 oranges, I will spend $5.60. However, if I buy 6 apples and 2 oranges, I will spend $4.80. How much does one orange cost? Write the answer like this example: 48cents.
*March 3, 2011*

**Chemistry**

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
*February 21, 2011*

**Chemistry**

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
*February 21, 2011*

**seed**

what is the simple & complete subject in the following sentence. Heart- shaped cards are exchanged in modern times.
*February 20, 2011*

**University Physics**

Determine an equation for the total force needed to drag a box at constant speed across a surface with coefficient of kinetic friction uk when the force is applied at an angle theta.
*February 12, 2011*

**math**

what would a data set with 10 numbers with a range of 85 a mean of 50 and a median of 40 look like
*February 8, 2011*

**Algebra**

Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. 1/2 x - 2y = 4 and 4y - x = -8
*January 30, 2011*

**Algebra**

Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. x + y = 6 and x - y = 4
*January 30, 2011*

**math**

What is the greatest amount of money you could leave for a tip if... 1.no paper money is left 2.with the coins tat are left, change cannot be ;made for a quarter or for a dollar.
*January 25, 2011*

**algebra**

-x/4 <= 7
*January 23, 2011*

**algebra**

The sum of two consecutive integers is between 5 and 9. What are the two integers? Tell the two numbers only
*January 23, 2011*

**algebra**

Solve the inequality, -3x - 2 < 5. Write the solution as an inequality with no spaces. You may leave the fraction in improper form.
*January 23, 2011*

**algebra**

Which of the following is a solution of the compound inequality? 3x + 8 < 2 or x + 12 > 2 - x
*January 23, 2011*

**algebra**

Solve |2x -5| > 7
*January 23, 2011*

**algebra**

Find all sets of two consecutive positive odd integers whose sum is less than or equal to 18.
*January 23, 2011*

**algebra**

Find all sets of two consecutive positive odd integers whose sum is less than or equal to 18.
*January 23, 2011*

**Chem- Dr Bob**

NO(g) + CO2(g)<-->NO2(g) + CO(g) delta H^degree sign = -100kJ Which of the following will favor the forward reaction? Why? A) add NO B) remove NO2 C) decrease the volume of the container D) raise the temperature E) add CO Not sure why the last posting didn't show up ...
*January 23, 2011*

**Chemistry**

NO(g) + CO2(g) <¡X> NO2(g) + CO (g) ƒ´H¢X = ¡V100 kJ Which of the following will favor the forward reaction?Why? A) add NO B) remove NO2 C) decrease the volume of the container D) raise the temperature E) add CO
*January 22, 2011*

**algebra**

Solve |x + 5| < 9
*January 19, 2011*

**algebra**

how do u do 1.25 multiplied by 64
*January 19, 2011*

**algebra**

show mw how to do 1.25 of 64
*January 19, 2011*

**algebra**

Cat Years 1 3 4 6 7 Human Years 13 33 43 63 73 What is the meaning of the slope? Write the slope-intercept form of the equation for the line of fit. Use linear interpolation and your line of fit to estimate the number of human years which will correspond to 5 cat years
*January 17, 2011*

**Algebra**

3(x - 2) > 4(2x + 11)
*January 12, 2011*

**Algebra**

What is 4x + 2y = -20 written in slope-intercept form?
*January 7, 2011*

**Algebra**

Skylark joined a karate class. She paid $30 to join plus $25 per lesson. What is the rate in this problem? Question 14 answers total cost original payment of $30 $25 per lesson
*January 7, 2011*

**Algebra**

Write the range for the equation with the domain given. Write in set brackets with commas between numbers and no spaces. 5x - 3y = 6 ; Domain {-3, 0, 6}
*January 7, 2011*

**Algebra**

Write the equation y - 4 = -2(x - 5) in slope-intercept form.
*January 6, 2011*

**7th grade math**

1.25 of 64
*January 6, 2011*

**Algebra**

Write the equation y - 2 = 4(x + 5) in standard form
*January 5, 2011*

**Algebra**

Write the slope-intercept form of the equation of the line parallel to y = 5x + 2 which passes through the point (4, 9)
*January 5, 2011*

**Algebra**

Write the slope-intercept equation for the line through (3, 7) and (9, 3)
*January 5, 2011*

**Algebra**

Write the point-slope equation of the line through (-2, 1) with a slope of 3
*January 5, 2011*

**Algebra**

Write the slope-intercept form of the line which passes through (4, 2) with a slope of 1/2
*January 5, 2011*

**Algebra**

If y = 45 when x = 9, find the direct variation equation that relates y and x
*January 5, 2011*

**Algebra**

Write an equation in slope-intercept form of the line with an x-intercept of 6 and a y-intercept of 5.
*January 5, 2011*

**Algebra**

Write an equation of the line that passes through (8, 3) and (4, 3).
*January 5, 2011*

**Algebra**

Write an equation in slope intercept form of the line that passes through (4, 1) and (5, -1).
*January 5, 2011*

**Algebra**

Write an equation in slope-intercept form of the line with an x-intercept of 6 and a y-intercept of 5.
*January 5, 2011*

**Algebra**

Write an equation of the line that passes through (8, 3) and (4, 3).
*January 5, 2011*

**Algebra**

Write an equation in slope intercept form of the line that passes through (4, 1) and (5, -1).
*January 5, 2011*

**Algebra**

Write a direct variation equation that relates x to y. Then solve. Show both the equation and the solution. If y = 8 when x = 4, find y when x = 5.
*January 5, 2011*

**Algebra**

Write a formula for this sequence. Type it with no spaces. 19, 11, 3, -5,...
*January 5, 2011*

**Algebra**

Write a formula for this sequence. Type it with no spaces. 50, 83, 116, 149,...
*January 5, 2011*

**Algebra**

50, 83, 116, 149
*January 5, 2011*

**Algebra**

Predict the next two numbers in this sequence. Leave a comma but no spaces between the numbers. 1/4, 1/9, 1/16, 1/25,...
*January 5, 2011*

**Criminal justice**

What new initiatives are under way through the American Society for Industrial Security International?
*January 4, 2011*

**Criminal justice**

What new initiatives are under way through the American Society for Industrial Security International?
*January 4, 2011*

**algebra**

What do you notice about the ordered pairs?
*January 4, 2011*

**algebra**

If you only had the graph of a relation on a piece of grid paper, how could you graph the inverse without listing the ordered pairs?
*January 4, 2011*

**algebra**

Draw a line on the fold. List five ordered pairs on the fold
*January 4, 2011*

**algebra**

5/12=10/x-1
*January 4, 2011*

**algebra**

A block of ice loses one third of its weight every hour. After 2 hours, the block weighs 40 pounds. How much did the block weigh to begin with?
*January 4, 2011*

**algebra**

Chanina bought a pair of jeans which originally cost $88 at a 25% discount. How much was marked off the original price?
*January 4, 2011*

**algebra**

|3n + 5| = 7
*January 4, 2011*

**algebra**

Let h(x) = 2x + 7. Find the value of h(x) + 14
*January 2, 2011*

**algebra**

Let f(x) = 9x - 4.5. Find the value of f(2).
*January 2, 2011*

**algebra**

Find the value of x so that the line passing through the points will have the given slope: (x, 6) and (10, -3) with a slope of -3/2. Type only the number in the blank
*January 2, 2011*

**algebra**

2a = 3a + 4c for a
*January 2, 2011*

**algebra**

2a = 3a + 4c for a
*January 2, 2011*

**algebra**

2x + y = 9 for y
*January 2, 2011*

**algebra**

3x + y = 6
*January 2, 2011*

**algebra**

Two cars are driving toward each other from opposite directions. If one is driving 55 mph, the other is driving 60 mph and the cars are 500 miles apart, how long will it be before they pass each other? Round to the nearest tenth of an hour
*January 2, 2011*

**algebra**

Last year, there were 120 seniors in Limon High School. This year there are 145. What is the percent of increase? Round to the nearest percent.
*January 2, 2011*

**algebra**

4(c - 3) = 4c + 8
*January 2, 2011*

**algebra**

3c+4=4c-17
*January 2, 2011*

**algebra**

-1/6m=22
*January 2, 2011*

**algebra**

Is the following always, sometimes or never true? X + 1 = X + 0
*January 2, 2011*

**social studies**

i need info on iran's nuclear program asap so can u tell me were to get it
*December 13, 2010*

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