Wednesday

September 28, 2016
Total # Posts: 878

**social statistic**

what is the z-score for a raw score if 89?

*March 11, 2012*

**math**

what's 60% of $47,000.00

*March 10, 2012*

**Economics**

how to calculate Qd=15.0-0.2P

*March 3, 2012*

**chemistry**

How many grams of sodium chloride, NaCl (fw 58.44), are required to prepare exactly 200 mL of a solution that is 600 ppm in sodium ions?

*February 28, 2012*

**physic**

A force of 12 N acts on an object of mass 10kg and moves it with a constant velocity across a floor. What is the coefficient of fiction between the object and the floor?

*February 28, 2012*

**Thanks Ms. Sue**

I'm going to read more about Robert Frost. He seemed to have jad quite a life. Thanks Again! Dee

*February 27, 2012*

**Cisco**

How many formula units are in .25 mole of Na O ? 2

*February 27, 2012*

**organic chemistry**

how do you propose a synthesis of a triphenylmethanol using a benzene, a formaldehyde,and any other inorganic reagents?

*February 25, 2012*

**MATH**

If $605 is invested in an account that earns 20.25%, compounded annually, what will the account balance be after 25 years? (Round your answer to the nearest cent.)

*February 25, 2012*

**MATH**

Find the cost of a home in 20 years, assuming an annual inflation rate of 4%, if the present value of the house is $285,000. (Round your answer to the nearest cent.)

*February 25, 2012*

**physics**

A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.450, respectively. (a) What horizontal pushing force is required to just start the crate moving?

*February 23, 2012*

**Half-Life**

If the half-life of a radionuclide is 1 month, is a sample of it completely decayed after 2 months?

*February 19, 2012*

**math**

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 35 said they drove alone. 24 rode in a carpool. 33 rode public transportation. 5 used both carpools and public ...

*February 14, 2012*

**math**

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 35 said they drove alone. 24 rode in a carpool. 33 rode public transportation. 5 used both carpools and public ...

*February 13, 2012*

**physics**

An 845 N sled is pulled a distance of 180 m. The task requires 1.38 x 104 J of work and is done by pulling on a rope with a force of 122 N. The rope is held at _____° above the horizontal.

*January 24, 2012*

**Physics 2**

A 10 g bullet is fired into, and embeds itself in, a 2 kg block attached to a spring with a force constant of 19.6 n/m and whose mass is negligible. How far is the spring compressed if the bullet has a speed of 300 m/s just before it strikes the block and the block slides on a...

*January 20, 2012*

**physics**

Nuclei that has the same number of protons, but may contain diff number of neutrons.

*January 20, 2012*

**Science**

c thick carpet

*January 11, 2012*

**algebra**

(1-(1/x)) / (1-x) = ? please help i don't know what to do next.....

*January 11, 2012*

**Math**

-x=-20+3y x=20-3y 5(20-3y)+3y=40 100-15y+3y=40 100-12y=40 -12y=-60 y=5 -x-3(5)=-20 -x-15=-20 -x=-5 x=5 check -5-3(5)=-20 -20=-20 5(5)+3(5)=40 25+15=40 40=40

*January 11, 2012*

**math**

42/16 21/8

*January 11, 2012*

**Science**

Question... So then is it unnecessary to calculate the molar mass of the reagent.? Is only the molar mass of the product relevant to this question.?

*January 7, 2012*

**Health**

what are the legal consequences of using steroids illegally.

*January 3, 2012*

**math**

3x+9y=-9, -x-y=9

*December 8, 2011*

**statistics**

If a population has a standard deviation ó of 25 units, what is the standard error of the mean if samples of size 100 are selected?

*December 2, 2011*

**Statistics **

What is the confidence interval for c= 0.95 x = 5.3, s = 0.5 , and n =53

*December 2, 2011*

**statistics**

Find the area under the standard normal curve for the following: (A) P(z < -1.80) (B) P(-1.93 < z < 0) (C) P(-0.17 < z < 2.05)

*November 30, 2011*

**Accounting**

how and what do I post from the cash receipts journal to the general journal

*November 28, 2011*

**statistics**

0.99

*November 27, 2011*

**Physics**

Gas is confined in a tank at a pressure of 11 ATM and a temperature of 25 degree Celsius. If 2/3 of the gas is withdrawn and the temperature is raised to 75 degree Celsius, what is the new pressure in the tank?

*November 26, 2011*

**Sentence**

Her

*November 24, 2011*

**statistics**

e Chebyshev’s theorem to find what percent of the values will fall between 226 and 340 for a data set with a mean of 283 and standard deviation of 19.

*November 13, 2011*

**statistics**

Why should we check if your data is binomial?

*November 13, 2011*

**statistics**

give an example where the median would be less than the mean.

*November 11, 2011*

**statistics**

given 100,90,80,75,70,60,30,25,5,4 what score corresponds to the 70th percentile?

*November 11, 2011*

**social and criminal justice**

Hello I have a 2 to 3 page paper due on Monday 11/14, 2011 and I am having trouble finding good reliable information to complete the assignment. The instructions are to: Prepare a paper identifying at least three changes expected in the field of criminal justice over the next...

*November 11, 2011*

**math**

relative frequency distribution

*November 7, 2011*

**math**

a rectangular table measures 3/5 of a meter long by 1/7 of a meter wide. what is the area

*November 5, 2011*

**Algebra II**

b/3 + 6=82

*November 5, 2011*

**Physics**

a student attaches a mass to the end of a 0.80 m string. The system will be whirled in a horizontal circular path at 31.5 m/s. The maximum tension the string can withstand without breaking is 250 N. What is the maximum mass the student can use?

*November 1, 2011*

**physics**

a jet plane flying at 550 m/s makes a curve. The radius of the circle in which the plane is flying is 9.0 X 10^3 m. What centripetal acceleration does the plane experience? Express this acceleration relative to g, the acceleration due to gravity.

*November 1, 2011*

**Physics**

The average distance separating earth and moon is 384000 km. What is the net gravitational force exerted by earth and moon on a 3.00 * 10^4 kg spaceship located halfway between them.

*November 1, 2011*

**Physics**

A vehicle is travelling at 25.0 m/s. It brakes provide an acceleration of -3.75 m/s^2[forward]. What is the driver's maximum reaction time if she is to avoid hitting an obstacle 95.0 m away? the answer is a number less than 0.5 second. can you tell me the exact number and ...

*October 31, 2011*

**law**

describe the implied powers doctrine.

*October 18, 2011*

**geometry**

If the base of an isosceles triangle has a length of 10, what is the shortest possible integral value for the length of each of the congruent sides?

*October 17, 2011*

**Physics**

Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force

*October 13, 2011*

**MATH**

B= 5 (given) L=h+1= 8 H= 7

*October 12, 2011*

**Algebra**

I got 1.12/.55 .05 x-.6x+1.2= .08 -.55x= -1.12 -1.12/-.55

*October 12, 2011*

**Basic Communication Skills**

Environment? Location?

*October 12, 2011*

**math**

21/3=7 answer 7

*October 12, 2011*

**Physics please help**

Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force?

*October 12, 2011*

**math**

-31 and 0

*October 12, 2011*

**algebra**

Is that suppose to be 2X or X^2

*October 12, 2011*

**math**

Negative

*October 12, 2011*

**math**

B+4=g B+g=18 b+b+4=18 2b=18-4 2b=14 b=14/2 b=7

*October 12, 2011*

**Physics**

Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force?

*October 12, 2011*

**chemistry**

Change 427 ml to liters Multiply liters and the molarity (1.73) and ur answer will be in moles Find the molar mass of k3po4 then convert your moles to grams using the molar mass

*October 12, 2011*

**chemistry**

Convert the grams to moles by using the molar mass then convert ml to liters M= mol/liters

*October 12, 2011*

**Science**

One big bird nest

*October 11, 2011*

**ANSWERS FOR TEACHER AID TEXT 02604500**

ANSWERS FOR TEACHER AID TEST 02604500

*October 11, 2011*

**chemistry 105**

13

*October 10, 2011*

**physics**

Add the masses on the bottom not subtract..sorry I hit the wrong button

*September 28, 2011*

**physics**

T= (2gm1m2)/(m1-m2) A= g(m1-m2)/m1+m2 D= 1/2at^2

*September 28, 2011*

**Physics**

Ok I tried an didn't even come close to the right answer.

*September 28, 2011*

**Physics**

The coefficient of static friction between the 3.00 kg crate and the 35.0 degree incline is .300. What minimum force must be applied to the crate from sliding down the incline?

*September 28, 2011*

**physics**

-15.00 m/s= Voy- 1/2(10.0 m/s) (.20 sec)^2 Voy = initial velocity and is equal to 0

*September 28, 2011*

**Physics**

Thank you!!

*September 28, 2011*

**Physics**

Two objects with masses of 3.00 kg are connected by a light string that passes over a frictionless pulley.what is the distance each object will move in the first second of motion if both objects start from rest.

*September 28, 2011*

**Media Influences on America**

Bill Goodykoontz states that media and popular culture often understand society better than straight coverage. Why is this so? Can you name any examples?

*September 27, 2011*

**physics**

The sum of two forces, one having a magnitude of 8 N acting due west and other having a magnitude of 6 N acting due north is ___. What is the magnitude of that force? Answer in units of N

*September 27, 2011*

**physics**

Thanks so much!!!

*September 26, 2011*

**physics**

An object with mass m1=5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2= 10.0 kg. Find the acceleration of each object and the tension in the cable.

*September 26, 2011*

**physics**

An object with mass m1=5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2= 10.0 kg. Find the acceleration of each object and the tension in the cable.

*September 26, 2011*

**geometry**

angle 3=3x+9

*September 25, 2011*

**probability**

Reiny, thanks!

*September 24, 2011*

**Decision Criteria**

You have available five different investment strategies and their respective payoffs for various states-of-nature as shown in the chart below. Which investment would you make under the different decision criteria? States of Nature Sever Decline Moderate Decline Stable Moderate...

*September 24, 2011*

**probabilty**

Smitty's Bar and Grill has brand name recognition of 61% around the world. Assuming we randomly select 2 people. The assumptions of a Bernoulli process are met. What is the probability a)exacatly 5 of the 12 recognize the name of Smitty's Bar and Grill? b)5 or fewer ...

*September 23, 2011*

**statistics**

The Ace AirLines has a policy of overbooking flights. The random variable x represents the number of passengers who cannot be boarded because there were more passengers that seats. x P(x) 0 0.061 1 0.132 2 0.255 3 0.345 4 0.207 a)Is this a probability distribution? How do you ...

*September 23, 2011*

**math**

its called order of operations, pre algebra

*September 18, 2011*

**math**

how do you get the answer: 32-13+21=114

*September 18, 2011*

**algebra**

80x=100 X represents the number of hours. Solve for x. 100/80=?

*September 15, 2011*

**Algebra**

y=1/2x+5

*September 15, 2011*

**math**

100/40 = 2.5 Which is 2 and a half hours.

*September 15, 2011*

**math**

40x=100 X represents the number of hours. Solve for x.

*September 15, 2011*

**math**

3.5x10 to the 4th 9.82x10 to the 8th

*September 15, 2011*

**Finite Math**

Pivot the system about the element in row 2, column 1. [3 3| –2] [–9 –4| 1]

*September 15, 2011*

**Finite Math**

A dietitian wishes to plan a meal around three foods. The meal is to include 16,200 units of vitamin A, 4,620 units of vitamin C, and 680 units of calcium. The number of units of the vitamins and calcium in each ounce of the foods is summarized in the table below. Determine ...

*September 11, 2011*

**Finite Math**

Solve the system of linear equations, using the Gauss-Jordan elimination method. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions involving one parameter, enter the solution using t for the last variable. If the solution involves two ...

*September 11, 2011*

**Math**

Find the equation of the circle that satisfies the given conditions. Center at the origin and passes through (7, 9) 130 = ?

*September 9, 2011*

**soc**

All sages provide both wisdom and inspiration. Since Dasha’s speech contained wisdom and greatly inspired her audience, Dasha is a sage. Which one of the following points out the flaw in the argument above?

*August 27, 2011*

**math**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. Assume 365 days in a year. (Round your answer to the nearest cent.) $3,000 balance, 21% ...

*August 23, 2011*

**Math**

Hi - I'm finding this question a bit tricky and think I answered it wrong, can someone please verify for me? Many thanks.... In triangle EFG, find the value of f, if e = 7.3 cm, g = 8.7 cm and <E = 73. Please help

*August 21, 2011*

**math**

Ahhh...I see! Thank you for helping, I would have never have worked this out correctly.

*August 21, 2011*

**math**

how will I see that the angle is 45 degrees? Don't we have to calculate that? This is what I'm asking you about. How is <O calculated so it comes up to 45 degrees? I have 2 sides and have to find the angle as it's not given before I can proceed to find the third...

*August 21, 2011*

**math**

Hi - I'm reposting this thread please read the bottom...thanks. Ajax is 8 km due west of Oshawa. Uxbridge is 16 km NW of Oshawa. How far is it from Ajax to Uxbridge? Explain whether you have enough information to solve this problem. my answer was 13.856 km but not ...

*August 21, 2011*

**Math**

Hi - I'm reposting this thread as there was some encoding issues in previous version that I clarified near bottom. Thanks. Hi - I'm having problems drawing a diagram for the following question. The part I find unclear is "they mark a point A, 120 m along the edge ...

*August 21, 2011*

**math**

Thank you, that's what I got too:)

*August 21, 2011*

**math**

Maybe all my questions have this problem. THanks for telling me how to fix it. The original question I posted was: Noah and Brianna want to calculate the distance between their houses which are opposite sides of a water park. They mark a point, A, 120 m along the edge of the ...

*August 21, 2011*

**math**

Hi - I'm having problems drawing a diagram for the following question. The part I find unclear is "they mark a point A, 120 m along the edge of the waterpark from Brianna's house. I'm wondering if point A is the waterpark. See question. My answer to this ...

*August 21, 2011*

**math**

Hi - How did you get 45 degrees? Think that's the part I'm lost with.

*August 21, 2011*