Sunday

November 29, 2015
Total # Posts: 200

**Identities**

Verify the following identity cos2x/sin2x+sinx/cosx=csc2x
*November 18, 2015*

**Pre calc**

Let sin u=-8/17 and cos v= 12/13, with pie<u<3pie/2. Find the exact value of cos(u+v)
*November 17, 2015*

**Statistics**

The music industry must adjust to the growing practice o consumers downloading songs instead of buying CDs. It therefore becomes important to estimate the proportion of songs that are currently downloaded. How many randomly selected song purchases must be surveyed to determine...
*July 22, 2015*

**Statistics**

A survey of 925 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 90% confidence interval for the true population of all voters in the state who favor approval.
*July 22, 2015*

**Statistics**

The Tyco Video Game Corporation finds that it is losing income because of slugs used in its video games. The machines must be adjusted to accept coins only if they fall within set limits. In order to set hose limits, the mean weight of quarters in circulation must be estimated...
*July 22, 2015*

**Statistics**

I'm not quite sure I understand. What do I use as the score, and what do I use for n.
*July 20, 2015*

**Elementary statistics**

Thank you so much!!!
*July 20, 2015*

**Elementary statistics **

Scores on an English test are normally distributed with a mean of 78% and a standard deviation of 4.5%. Find the value of the first quartile.
*July 20, 2015*

**Elementary Statistics**

Thank you so much. I greatly appreciate it.
*July 20, 2015*

**Elementary Statistics **

The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.39 inches and a standard deviation of 0.04 inches. If 500 pencils are selected how many would you expect to have a diameter more than 0.33 inches?
*July 20, 2015*

**Math statistics **

A mountain search and rescue team received an average of 600 calls per year. Use the poisson dustribution to find the probability that on a randomly selected day, they will receive 1 or more calls.
*July 7, 2015*

**Math statistics **

Ten percent of Americans adults are left-handed. A statistics class has 50 students in attendance. Find the standard deviation for the number of left-handed students in such classes of 50 students
*July 7, 2015*

**Math statistics **

For a certain computer program a password must be exactly 5 characters long. The first character must be a mnber 0-8, the second, third and fourth character can either be one of the 26 letters or a number 0-5, the fifth character has to be exactly the same as the second ...
*July 7, 2015*

**Math Statistics **

In the power ball lottery game, winning the jackpot requires that you select the correct five unique numbers between 1 and 58 inclusive (don't have to match the order) and, in a separate drawing, you must also select the correct single nber between 1 and 13 inclusive. Find...
*July 7, 2015*

**amplifiers**

Question 10. 10. (TCO 3) A particular BJT has a base DC current of 1 mA and a collector DC current of 10 mA. What is the DC beta for this transistor? (Points : 7) 1 10 100 1,000
*June 23, 2015*

**math117A**

An object 4.2 feet tall casts a shadow that is 12.6 feet long. How long in feet would the shadow be for an object which is 20.4 feet tall? A.12 feet B. 6.8 feet C.28.8 feet D.61.2 feet
*June 14, 2015*

**science**

i live in orlando?
*June 1, 2015*

**science**

Could someone who goes to connexus academy Please please please give me the answers to Human Impact on the Environment Unit Test pretty please im stressed out and im backed up.please please help i will repay you! please!!!! and please may they be the CORRECT answer. Thank you ...
*June 1, 2015*

**english**

I read it. I thought the theme is related to gentleness and good nature. But I can't come up with a good theme for this story that relates to gentleness and good nature
*May 8, 2015*

**math**

what is the theme of the story the Christmas goblin by Charles Dickens?
*May 8, 2015*

**civics and careers**

Canadian charter of rights and freedom
*April 7, 2015*

**civics and careers**

How does people's legal rights in the charter related to citizenship (informed, active citizen)? As many reasons as possible
*April 7, 2015*

**Mathematical literacy**

Assume there are 4 people living in the house nd their daily average consumption is 25litres per person per day nd there are 30days in a month . Calculate the average monthly water consumption for the household.
*March 3, 2015*

**math**

Solve 6k^2-17k-3=0
*March 1, 2015*

**Math**

x^3-x^2-36x+36=0
*March 1, 2015*

**7th grade challenge math**

of 109.6 million house holds, 19,508,800 watched the television show CIS during the week of October 3, 2005. what percent of american households watched CIS this week?
*January 6, 2015*

**History**

@Ms.Sue please check this
*January 5, 2015*

**History **

1.Which of these was a precedent that George Washington set? A. constitutional amendment process B.formal presidential dinners C.singing of the national anthem D.use of a presidential cabinet 2.“The time for a new election of a citizen be president of the United States is...
*January 5, 2015*

**English**

Would it be Feeling some stress when you face difficulties is natural Or Feeling some stress when you face difficulties are natural
*August 26, 2014*

**Statistics**

As the sample size gets larger, what happens to the size of the correlation that is needed for significance?
*May 2, 2014*

**Statistics - Help!!!**

An independent measures research study compares three treatment conditions using a sample of n=5 in each treatment. For this study, the three samples have SS1=10, SS2=20, SS3= 15. What value would be obtained for MS within?
*May 2, 2014*

**statistics**

A research study comparing three treatments with n=5 in each treatment produces T1=5, T2=10, T3=15 with SS1=6, SS2=9, SS3=9 and (Greek letter E)X squared =94. What is SS total? What is SS between and what is SS within?
*May 2, 2014*

**science(check answers)**

ok I think U got them all right why the Heack U ️forgot 8-15
*March 5, 2014*

**Honors Physical Science**

An object is moving at 25 m/s and has a kinetic energy of 12,500 J. If the acceleration due to gravity on Mercury is about 3.8 m/s2 , what would be the weight of this object on Mercury?
*February 19, 2014*

**Sociology**

What social policies to reduce crime would likely be recommended by a sociologist who favors Merton's Strain Theory? Why?
*November 16, 2013*

**SimplifyingRadicals**

√162+11√243-7√128+√192 a.)√2 +17√3 b.)-47√2+107√3
*November 11, 2013*

**Further mathematics**

An exponential sequence (GP)of positive terms and a linear sequence (AP)have the same first term.the sum of their first terms is 3,the sum of their second terms is 3 and the sum of their third terms is 6. Find the sum of their fifth terms
*June 30, 2013*

**books**

I'm sorry to ask again but the answer has to come from Chapter 18 of the book "In the Garden on Beasts" And the question is At this point in Hitler’s rise to power no military action was taken to halt his ascension. What would have been the most likely ...
*April 30, 2013*

**books**

In the book "In the Garden of Beasts", chapter 16 it asks What did Klemperer notice about Hitler’s use of language? What was the purpose of the Editorial Law?
*April 30, 2013*

**books**

In the book In the Garden of Beasts, Chapter 18, it asks, At this point in Hitler’s rise to power no military action was taken to halt his ascension. What would have been the most likely outcome of preemptive military action?
*April 30, 2013*

**Calculus**

A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant.
*April 29, 2013*

**Calculus**

On what intervals of t is the curve described by the given parametric equation concave up? Concave down? x=t^2; y=t^(3)+3t
*April 16, 2013*

**Calculus**

For the curve r = 2 sin 3(theta): Find the arc length of one petal
*April 16, 2013*

**English**

Mike, I don't think jumping right into it is a good idea. You want to lead them to it. What is the question starting the intro?
*April 12, 2013*

**Honors Math**

Thank you Mr. Bob Pursley!
*April 12, 2013*

**Honors Math **

Please help! Malia incorrectly graph the equation y=2/3x+12 with a slope of 3/2. What should malia's corrected graph look like? The answers can be: A. Vertical B. Horizontal C. Less Steep D. More Steep P.S. The / doesn't mean divide in this equation. It is refering to ...
*April 12, 2013*

**social studies**

In referrencing Lenin's "What is To Be Done" Lenin is here calling for unity among socialist thinkers, emphasizing that criticisms made by socialist thinkers against one another’s thoughts strengthen the enemy (bourgeois ideology”). Put in other words, ...
*April 9, 2013*

**social studies**

Referencing Vladimir Lenin, "What is To Be Done?" (1902) Why do you think it was left to the “bourgeois intelligentsia” to transform the quest for working class rights into a philosophy?
*April 9, 2013*

**Biochemistry**

b anyone, stuck :p
*March 31, 2013*

**Math HELP!! :(**

@bobpursley
*March 18, 2013*

**Math HELP!! :(**

I can't I won't let me
*March 18, 2013*

**Math HELP!! :(**

a contractor's designing one side of an office building 48 feet in length the windows are each 5 feet long and will be placed Six feet apart and 5 feet from the end of the building wall how many windows can a contractor design
*March 18, 2013*

**math**

the answer for the triangular prism with these dimensions 6.0cm 7.5cm 9.6cm what is the answer
*February 12, 2013*

**Math**

Position Term 1 10 2 14 4 22 8 38 n a) Create an expression that represents the term’s value in terms of the position.
*January 16, 2013*

**AP Chemistry**

The pH of a solution of Sr(OH)2 is 12.42. What is its pOH? What is its [H3O^+]? What is its (OH^-)? What is its [Sr(OH02]? Is the solution acidic or basic?
*January 9, 2013*

**AP Chemistry**

The pH of a solution of Sr(OH)2 is 12.42. What is its (OH^-)
*January 9, 2013*

**child care**

promote the benefits of change
*January 7, 2013*

**mlit**

a plane at a height of 5000m is travelling ata constant speed of 300m.s. A heat seeking missile is fired at the plane when it is 5000m due east of an airbase. if the missile's speed is 350m.s, will the missile hit the plane before it reaches 9000m due west?
*January 5, 2013*

**Math**

Thank you Ms. Sue! I appreciate it!
*December 18, 2012*

**Math**

Please help! It says- A machine takes 4.0 hours to make 8 parts. At that rate, how many parts can the machine make in 31.0 hours? Anybody want to explain it to me?
*December 18, 2012*

**Honor'sMath/UsingSimilarFigures**

I've got the area part but I typed exactly what was in the textbook.
*December 16, 2012*

**Honor'sMath/UsingSimilarFigures**

Help! I cannot figure out how to do this and my teacher does not explain things very well! The question is- An image is 16 in. You want to make a copy that is similar. Its longer side will be 38 in. The copy costs $.60 per square inch, Estimate the copy's total cost. *What...
*December 16, 2012*

**Math**

You divide 925 by 37 and you get an answer of A.25ft. Your welcome! :)
*December 16, 2012*

**math**

johanna has a cellphone plan that has a monthly charge plus a per text fee. In October , she sent 45 texts and her bill $37.25. In November, she sent 118 texts and her bill was $40.90 write the y-intercept in coordinate form.Explain what the y-intercept represents in the ...
*November 24, 2012*

**maths**

how fast does a child`s heart beat in a minute?
*November 19, 2012*

**Math**

i am a number between 50 and 60. one of my factors is 28. qhat number am I?
*November 16, 2012*

**Math**

HELP! I have a math question the says this: In track practice, Jesse ran a mile in 7 minutes. His mile time was 2 1/2 minutes faster than Michael's time. Write and solve an equation to calculate Michael's mile time. I can't figure out what to do and it's due ...
*November 11, 2012*

**Math/Algebra**

Thank you Ms. Sue!
*November 11, 2012*

**Math/Algebra**

I really need help! I have a paper due tomorrow and I can't find out this answer. Can you help me? The question says this: -2=n+5. Under it it says: (-2)-____=n+5-____. I know that n equals -7 but I can't find out the blanks. Please help!
*November 11, 2012*

**College Physics**

I figured it out! I wasn't putting the t at omega=0 in the first equation in properly before converting from radians to revolutions!
*October 30, 2012*

**College Physics**

At t=0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by theta(t)= 258t - 20.4t^2 - 1.47t^3 How many revolutions does the motor shaft turn through between the time when the current is reversed and the instant when ...
*October 30, 2012*

**calculus help!!!!**

Find derivative of: g(theta) = cos^2(2theta-1)
*October 8, 2012*

**Calculus: free body diagram--PLZ HELP!=)**

Grain is being poured through a chute at a rate of 8 cubic feet per minute and forms a conical pile. The radius of the bottom of the pile is always half of the heightof the pile. How fast is the circumference of the base increasing when the pile is 10 feet high? ..I keep ...
*October 8, 2012*

**CALCULUS**

Find derivative of: g(theta) = cos^2(2theta-1)
*October 8, 2012*

**calculus**

find the derivative of y=2sqrt(x)-(1/x)
*October 7, 2012*

**Calculus - free body diagram **

A water tank has the shape of an inverted right circular cone whose base radius is equal to half its height. Water is being pumped in at 2 cubic meters per second. How fast is the water rising when the water is 3 meters deep?
*October 7, 2012*

**CALCULUS help! =)**

WOW!! You are such a lifesaver!!!!!!!!!=) ...and also very good at math !
*October 7, 2012*

**chemistry**

A chemist must dilute 55.6 ml of 1.48 M aqueous silver nitrate (AgNO3) solution until the concentration falls to 1.00M. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Round your ...
*August 31, 2012*

**Algebra 1 (exponents)**

Thank you
*June 28, 2012*

**Algebra 1 (exponents)**

(6p)^-2 how will I write this in positive answer? I got 1 ---p ^-2 136 Please help! thank you
*June 28, 2012*

**chemistry**

A 150-mL sample of a .600-mol/L calcium nitrate solution is mixed with a 1.00L of .500-mol/L NaOH(aq). Calculate the mass of precipitate produced in this reacton.
*May 18, 2012*

**animals**

What is the habitat and location for the Florida Bonneted bat*? Also, what is its kingdom, phylum, class, order, and sub order? *Also known as the Wagner's Mastiff bat or the Wagner's Bonneted bat
*May 17, 2012*

**to Lizzy and ms.sue**

no problemo
*April 10, 2012*

**Math**

The time it takes Javier to go to school and his walking rate are inversely proportional. If it takes him 12 mins walking at 3 mph how long does it take if he walks at 4 mph?
*April 10, 2012*

**math**

The answer to the second one is 25%
*April 10, 2012*

**8th grade math**

The amount of vitamin c in the breakfast cereal varies directly with the serving size. If 1 and 1/4 cups of cereal provides 10% of the recommended daily value of vitamin c, what percent of the recommended daily value of vitamin c is in two cups of cereal?
*April 10, 2012*

**language arts**

Use "but"
*April 10, 2012*

**algebra**

. A boy is sitting in his red wagon at the top of a hill, holding onto a tree to keep from rolling down the hill. The distance from the top of the hill to the bottom is 41 meters. He pushes off from the tree at a starting velocity of 2 m/s, and then gravity accelerates the ...
*April 6, 2012*

**chemestry**

Thank you =)
*March 29, 2012*

**chemestry**

Please answer the following THAT I CAN'T!!! Where is Plutonium found? How common is Plutonium in nature? What does Plutonium look in pure form? What does Plutonium's atomic nucleus look like? THANK YOU!!
*March 29, 2012*

**physics**

Is 524,3 a floating or fixed point? Is 524,30 a floating or fixed point?
*February 5, 2012*

**geography**

is there a bay or harbor that is in Chicago that goes into lake Michigan?
*January 29, 2012*

**geography**

which one is close to chicago?
*January 29, 2012*

**geography**

Which great lake is closest to Michigan?
*January 29, 2012*

**algebra**

what is 4x-15/2=1/2
*January 29, 2012*

**chem **

What is the name origin of plutonium? What is its crystal structure? What is the atomic number? Is it radio active or synthetic? What is its classification? What is its uses? Where is it obtained from?
*January 9, 2012*

**math **

In 1 through 6, find each sum. Simplify, if possible. Estimate for reasonableness. 1. 7 __2 3 + 8 __5 6 2. 4 __3 4 + 2 __2 5 3. 11 ___9 10 + 3 ___1 20 4. 7 __6 7 + 5 __2 7 5. 5 __8 9 + 3 __1 2 6. 21 ___ 11 12 + 17 __2 3 7. Number Sense Write two mixed numbers that have a sum ...
*December 20, 2011*

**math HELP!!**

i'm not understanding mixed numbers and improper fractions. (the part where you convert one into another) WHAT DO I DO?!?!
*December 19, 2011*