# Posts by n

Total # Posts: 138

**math**

The mean age of the 43 presidents of the United States (as of 2011) on the day of inauguration is 54.6 years, with a standard deviation of 6.3 years. A researcher constructed a 95% confidence interval for the mean age of presidents on inauguration day. He wrote that he was 95...

*February 15, 2017*

**Math**

The 112th Congress of the United States of America has 535 members, of which 87 are women. An alien lands near the US Capital and treats members of Congress as a random sample of the human race. He reports to his superiors the 95% confidence interval for the proportion of the ...

*February 14, 2017*

**stat**

three boxes contains 12 electric bulbs in each one box(1) contains 4 defective bulbs box (2) contains 3 defectives bulbs Box (3) contains 5 defectives bulbs a box is selected randomly and one bulb is drawn 10 what is the probability that the selected bulb is defective

*November 8, 2016*

**English**

They're alright for the most part, but could possibly be worded better. My suggestions: 1. Can you keep going shopping with me a secret? 2. You could replace "left" with "made" if you wanted, although it makes sense the way you have it too. 3. The wind...

*November 3, 2016*

**Chemistry**

Elements A and B combine to form two different compounds. The first compound contains 15.0 grams of substance A, and 8.60 grams of substance B. It can be represented by the formula A2B (subscript 2). The second compound contains 5.0 grams of substance A, and 4.30 grams of ...

*November 2, 2016*

**math need help ASAP**

use benchmark to estimate the sum 3/5 + 3/17

*October 17, 2016*

**Science**

1. a, 2. b, 3. b, 4. d

*September 15, 2016*

**Chemistry**

2350

*September 6, 2016*

**Chemistry**

42.57

*August 22, 2016*

**Social Studies**

what was the first of two important changes that marked emperor Constantine's rule

*August 16, 2016*

**Physics**

A force of 35.0N is exerted onto a 12.0kg block and the block moves 42.0m. How much work is done?

*August 2, 2016*

**Physics**

An 80.0 kg rollerblader is at rest at the top of a 100 m hill at a 7o incline. The coefficient of friction on the hill is 0.110. What is the roller blader's kinetic energy at the bottom of the hill?

*August 2, 2016*

**chem 161**

What mass of precipitate will be formed when 25 mL of 0.532 M silver nitrate is mixed with 25 mL of 0.333 M NaCl?

*May 6, 2016*

**chem 161**

What volume of 0.114 M NaOH are needed to neutralize 25.0 mL of 0.250 M H3PO4?

*May 6, 2016*

**Sciences**

I agree

*February 10, 2016*

**Science**

A boy moves on a skateboard at a constant velocity of 3m.s . The combined mass of the boy and the skateboard is 40kg. He catches a bag of flour of mass 5kg that is thrown to him horizontally at 6m.s . Determine the velocity of the boy after catching the bag of flour.

*January 16, 2016*

**language**

westins

*January 14, 2016*

**Language Art**

you have to write a story and then put it in writetolearn and do this your self

*January 11, 2016*

**Science**

the atomic model

*January 3, 2016*

**math**

Elizabeth has 1 7/10 as many plants as rosalie has in her garden. If Elizabeth has has 51 plants, how many plants does rosalie have in her garden?

*December 17, 2015*

**Trig**

Proving it!(:

*December 8, 2015*

**Trig**

(tan/cot)- (sec/ cos) Also I need help with tan sin +cos = sec

*December 8, 2015*

**Trig**

(Cos/1-sin)- tan

*December 8, 2015*

**Trig**

Tan^2= csc^2 tan^2 -1

*December 8, 2015*

**Trig**

(Tan/cot)- (sec/cos)

*December 8, 2015*

**Trig**

(Cos/1-sin)- tan

*December 8, 2015*

**Please Check My Work: College Physics**

Correct answer..I got the same

*December 3, 2015*

**english**

What are three central assumptions of the american dream

*November 2, 2015*

**english**

what photographe is famous for images of Dust Bowl victims

*November 2, 2015*

**english**

DO you know who disappeared in the great deppresion

*November 2, 2015*

**english**

its a question from my study guide for the moderns 1914-1939

*November 2, 2015*

**english**

what two things happened in the prohibition period that had to do with oceans

*November 2, 2015*

**science**

Put the following events in order as an impression is processed by crime scene investigators -Make a cast of impression -set up crime scene tape -photograph -Take measurements

*October 27, 2015*

**science**

Put the following events in order as an impression is processed by crime scene investigators -Make a cast of impression -set up crime scene tape -photograph -Take measurements

*October 27, 2015*

**science**

what type of crime scene is most likely to contain toolmarks

*October 27, 2015*

**AP physics**

dcwsdcwdcwdwdwd

*October 18, 2015*

**physics**

An elevator is moving upward with a speed of 11 m/s. Three seconds later, the elevator is still moving upward, but its speed has been reduced to 5.0 m/s. What is the average acceleration of the elevator during the 3.0 s interval? a.5.3 m/s2, upward b.2.0 m/s2, upward c.5.3 m/...

*October 17, 2015*

**Math**

1000

*September 22, 2015*

**history**

so what is the correct answer

*September 21, 2015*

**Science**

Please help!!! You mix 100 millimeters of 10 degrees Celsius water and 100 millimeters of 90 degrees Celsius water. What is the final temperature?

*September 20, 2015*

**Physics**

Also, how would you find the work done by gravity on the block? Is that a trick question?

*March 11, 2015*

**Physics**

A 100 lb block of ice slides down an incline 5.0 ft long and 3.0 ft high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of friction between the ice and incline is 0.10. Find the force exerted by the worker. (I&#...

*March 11, 2015*

**Math**

That's what I thought...

*March 5, 2015*

**Math**

What is this written in postfix notation: !(!((5-10)*(4-(9/2)) > 60)-(((5*7)/(4/(5+3)))=15))<((4-3)=1)

*March 5, 2015*

**physics**

Before starting this problem, review Conceptual Example 7. The force vector A has a magnitude of 97.0 newtons (N) and points due east. The force vector B has a magnitude of 107 N and points 71.4 ° north of east. Find the (a) magnitude and (b) direction of A - B. (Give the...

*March 4, 2015*

**Discrete Math**

So, the question I got was: ∀x,(x =/= 0) → (∃!y, xy = 1) I'm really confused about what the "∃!y" means in this context, because the way I'm interpreting the question is: "For all x (when x is not equal to 0), there does not exist...

*February 18, 2015*

**Chemistry**

The Haber process is used to synthesize ammonia (NH3) from N2 and H2. The change in standard Gibbs free energy is ΔG°rxn = -16 kJ/mol A. Calculate the equilibrium constant for this reaction B. Calculate the ΔGrxn when you have 2 atm of NH3 (g), 2 atm of H2 (g), ...

*February 12, 2015*

**Chemistry**

A flexible balloon containing 1.5 mol of... ideal gas at constant pressure of 1.5 at... 100 °C. Calculate the change in intern...‡ (ΔE) of the gas.

*February 11, 2015*

**Chemistry**

A 35.00 mL sample of water at 30.0°C is placed in an open container with an external pressure of 1.00 atm. 30.0 kJ of heat is added to the water sample. The density of water is 1 g/mL. (a) How many grams of liquid water remain at the end of the process? Like, the equation ...

*February 11, 2015*

**Algebra**

18+4=

*January 25, 2015*

**Langston Hughes Dream Deferred**

Hello! My assignment: Analyze the poetic techniques that allow the poet to communicate his tone. Use the terms from this unit as effectively as you can. Here is my analysis. Does it sound alright? In the poem “Dream Deferred”, Langston Hughes uses a variety of poetic...

*December 22, 2014*

**Science~!**

Thanks so much Pacman! I got 100! :)

*December 10, 2014*

**Science~!**

#2 is chicken noodle soup! are you sure?

*December 10, 2014*

**books**

how do we write a blog for this. please explain how to write it. kindly n

*December 6, 2014*

**science!! please help me!!**

2. D

*October 11, 2014*

**math**

It's 2/3

*October 7, 2014*

**physics**

A box has a mass of 0.345 kg. It is on a very smooth (frictionless) horizontal surface and is acted upon by a force of 3.76 N at an angle of θ = 57.1° with the horizontal. The magnitude of the acceleration of the box is m/s2?

*October 2, 2014*

**Science**

For Connexus students the correct answers are D A A B

*September 10, 2014*

**physics**

a block of mass 3 kg rests on a smooth table and connected to another block of mass 2 kg, after passing over and ideal pulley, the block of mass 2 kg is released. how long does it take the block to travel 80 cm

*August 12, 2014*

**Grammar**

Thank you!!

*July 13, 2014*

**Grammar**

What kind of paragraph is this? Descriptive, Narrative, or Expository? The place I would like to visit most is heaven. Having the opportunity to be in a place with no sickness, suffering, or misery would be paradise. To eat dinner with Jesus Christ would be like a dream come ...

*July 13, 2014*

**Chemistry**

A sample of nitrogen occupies a volume of 300ml under a pressure of 380 torr at -177C. What would be the volume at STP? I know the answer is 430mL but I don't know which equations to use to formulate the calculation.

*May 1, 2014*

**Help Ms.Sue!!! Social Studies**

wrong

*May 1, 2014*

**Physics**

A charge q1 of -5.00*10^-9C and a charge q2 of -2.00*10^-9C are separated by a distance of 40.0cm. Find the equilibrium position for a third charge of 15.0*10^-9C

*April 22, 2014*

**chemistry**

The breakdown of p-nitrophenylphosphate at pH 2.6 is a first order hydrolysis process.. a) 12.5mmol of NPP were dissolved in 200mL of water at 77degrees celcius after 50mins the amount of NPP dropped to 10mmol. Calculate the average rate of this reaction and the rate constant ...

*April 12, 2014*

**health**

D. I think it's D that's what makes sense

*March 27, 2014*

**Algebra Question~!**

I must ask Reiny, why must they give us the answer? From my understanding this site is merely to help people acquire the answer by giving the helpful hints about how to solve the problem, not provide it to them.

*March 15, 2014*

**physics**

bjgu

*March 15, 2014*

**phys**

8010

*March 14, 2014*

**MATH**

2BOYS:7GIRLS=5BOYS:?GIRLS OPTIONS ARE 24,25,124,15 PLEASE CALCULATE IT.

*March 3, 2014*

**MATH**

2BOYS:7GIRLS=5BOYS:?GIRLS PLEASE SOLVE IT. OPTIONS ARE 24,25,124,15

*March 3, 2014*

**MATH**

2BOYS:7GIRLS=5BOYS:?GIRLS. PLEASE SOLVE IT

*March 3, 2014*

**science**

if you have two samples of the same volume. the mass of sample A is higher than that of sample B. which sample has the greatest density?

*February 16, 2014*

**Science**

Thanks! I got 100%

*January 29, 2014*

**Science**

Thanks

*January 29, 2014*

**Science ~CHECK MY WORK PLEASE~**

A is correct

*January 28, 2014*

**Science**

D is correct

*January 23, 2014*

**health**

ya what is the answer

*January 10, 2014*

**combinatorical mathematics**

Is this from brilliant?

*December 9, 2013*

**physics**

A stone is dropped from rest at the top of a mine shaft. It takes 58 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft? The acceleration of gravity is 9.8 m/s2 .

*October 27, 2013*

**Math 3rd grade**

1500 and 200

*October 4, 2013*

**Math**

The m angle is 30 times more than twice angle B. If angle A and angle B form a linear pair find the measurement of both angles.

*September 8, 2013*

**English**

I'm working on a complements assignment, and I understand what they are, but I'm a little thrown off by something: Take the sentence, "At first this Saturday had been a warm, sunny day." Saturday is the subject, had been is the verb phrase, and the complement...

*August 19, 2013*

**Calculus**

Thank you very much

*July 17, 2013*

**Calculus**

How would you go about finding the derivative of y=1/(3x^2)-5/(2x)?

*July 17, 2013*

**statistics**

what

*June 23, 2013*

**Physics**

the force on the object is F = ma = 0.00511 kg*0.824 m/s^2 = 0.00421 N and k = N/s = 0.00421 N/0.0455 m = 0.09254 N/m

*May 7, 2013*

**Financial Literacy**

6600.00

*May 1, 2013*

**Algebra**

stop cheating

*March 12, 2013*

**World history; HELP**

how did nationalism shape the development of europe in 1800

*February 27, 2013*

**physics**

A 0.10 kilogram ball dropped vertically from a height of 1.0 meter above the floor bounces back to a height of 0.80 meter. The mechanical energy lost by the ball as it bounces is aprox. a. 0.080 J b. 0.20 J c. 0.30 J d. 0.78 J

*January 28, 2013*

**math**

In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 2A (amperes), the resistance is 115ohms. What is the resistance when the current is 5A ?

*November 7, 2012*

**math**

In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 2A (amperes), the resistance is 115ohms. What is the resistance when the current is 5A ?

*November 7, 2012*

**math**

In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 2A (amperes), the resistance is 115ohms. What is the resistance when the current is 5A ?

*November 7, 2012*