Thursday

July 30, 2015

July 30, 2015

Total # Posts: 1,040

**Geo**

Which of the following is not a valid reason in a mathematical proof?
*July 7, 2015*

**Precalc**

Find a rectangular equation for the plane curve defined by the parametric equations. x = sin(theta) y = 3cos(theta)
*June 10, 2015*

**IT**

Why can you not install the server migration tools to the server running windows server 2008 R2 using the add roles and features wizard on your server running windows server 2012 R2?
*May 30, 2015*

**IT**

Why can you not install the server migration tools to the server running windows server 2008 R2 using the add roles and features wizard on your server running windows server 2012 R2
*May 30, 2015*

**mathmatics**

that would be 70
*May 17, 2015*

**mathmatics**

how would you estimate?
*May 17, 2015*

**mathmatics**

A jacket costs $94.95. It is on sale for 30% off. Estimate the sale price.
*May 17, 2015*

**math**

is it 66.46?
*May 17, 2015*

**Math**

What is “a, b and c” in this hyperbola? (y-2)^2/5-(x-3)^2/6=1
*May 16, 2015*

**Math**

What is “a, b and c” in this ellipse? x^2/9+y^2/4=1
*May 16, 2015*

**Algebra**

bicyclist rides 30 miles against a wind and returns 30 miles with the wind. his average speed for the return trip is 5mph faster. how fast did the cyclist ride against the wind if the total time of the trip was 5 hours
*May 13, 2015*

**Calc/Precalc**

Thanks so much. Could you help me with 2 & 3?
*May 7, 2015*

**Calc/Precalc**

Find the derivatives of 1. ln[(2x^3⋅2e^x)] 2. xy = cot(xy) 3. y = cos(x^3 + 27) I don't really know where to start with these. The answer is (3+x)/(x) for the first, y/-x for the second, and 35. -3x^2 sin(x^3 + 27) but I have no idea how they got there. Thank you!
*May 7, 2015*

**Chemistry help**

1. Find the pH when there are 0.034 moles of h+ in a liter of solution 2. Find the pH when there are 1.6x10^-7 moles of h+ in 500 ml of solution Please help me on these only problems im struggling with, thank you!
*May 4, 2015*

**Dance**

Cute drill team squad names that start with H? I need help!
*May 3, 2015*

**ALGEBRA**

A service that repairs TV's and sell maintenance agreement for $9 a yr. the average cost for repairing a TV is $39 and 3 in every 100 people who purchased maintenance agreements have TV that require repair Find the services expected profit per maintenance agreement
*April 30, 2015*

**Chemistry**

What is the molality of a solution of aluminum nitrate that contains 77.0 g of Al(NO3)3 dissolved in 120.0 g of water? Use molar masses with at least as many significant figures as the data given.
*April 27, 2015*

**Precalc**

Find the derivative of: f(x) = 1/(3x)^4 + 3x^4 Determine the points, if any, at which the function has a horizontal tangent line y = 5x^3 - 15x^2 y = 2x^3 + 6x^2 thank you!
*April 15, 2015*

**criminal justice**

In 1970, the District of Columbia passed the first __________ statute which authorized denial of bail to "dangerous" persons charged with certain offenses for up to 60 days.
*April 13, 2015*

**Criminology**

One analysis of nearly 6,000 police-citizen encounters revealed that police officers were more likely to arrest when the victim was __________ and the suspect was__________. Im trying to do this study guide and I cant find these questions Can someone help!
*April 13, 2015*

**Criminal Justice**

As far back as __________, researchers began to explore possible racial / ethnic bias in sentencing.
*April 13, 2015*

**ELA**

Personification is a figure of speech in which a thing, an idea or an animal is given human attributes. The non-human objects are portrayed in such a way that we feel they have the ability to act like human beings. For example, when we say, “The sky weeps” we are ...
*April 13, 2015*

**Statistics**

The distribution of weekly salaries at a large company is reverse J-shaped with a mean of $1000 and a standard deviation of $370. What is the probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random ...
*April 13, 2015*

**statistic**

Suppose a 95% confidence interval for the mean salary of college graduates in a town in Mississippi is given by [$36,080, $43,920]. The population standard deviation used for the analysis is known to be $12,000. a. What is the point estimator of the mean salary of all college ...
*April 12, 2015*

**Math (Help please)**

Hi! I'm a little confused on what I'm suppose to do for this problem. Can someone help? Thanks! Directions: Which element would be in Row 3, Column 1? [1 5 6 -2 7 11 4 0 -1 2 9 7]
*April 9, 2015*

**Math**

Find the value of the following matrix's. 1.) [-5 2 -8 -7] 2.) [3 -4 7 9]
*March 31, 2015*

**Precalc**

I need help with logs. Thank you! Evaluate. 1. log base(3) 25 to the cubed root Condense. 2. 1/3logx + 2logy^3 -3log(z+1)
*March 25, 2015*

**last question!! Criminology**

Thanks so much for all the help! :)
*March 22, 2015*

**last question!! Criminology**

. The view that a defense attorney's main concern is looking out for the client's interest; that nothing matters more to them than securing favorable plea agreements or, ideally, acquittals, is described as characterizing the defense attorney as a: A) "jack-of-all...
*March 22, 2015*

**Criminology**

. The largest category of convictions for felonies is: A) drug offenses. B) violent crimes. C) sexual crimes. D) property crimes. I think its A Im not sure though... I tried looking it up in my notes and book. I am trying! Believe me.
*March 22, 2015*

**Criminal Justice**

I couldnt find it in my text. The ones I am asking I can't find. I have read my chapter. All 5 of them.
*March 22, 2015*

**Criminal Justice**

It could be but I hardly hear of any woman murdering.
*March 22, 2015*

**Criminal Justice**

Males are arrested at rates much higher than females for the following crimes except: A) murder. B) rape. C) fraud. D) weapon offenses. Would the answer be A?
*March 22, 2015*

**Defense**

. Which of the following is not an example of an ethical dilemma a defense attorney may face? A) the prosecutor's winning record. B) client perjury. C) defense receipt of physical evidence. D) a confession in confidence. Would it be A?
*March 22, 2015*

**Physics**

C stands for degrees Celsius
*March 22, 2015*

**Physics**

A 51 kg block of metal has specific heat of 222 j/kg c. how heat energy must be applied to the block of metal to raise its temperature from 10 c to 22 c?
*March 22, 2015*

**Math**

Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y < 6 x > 0 ...
*March 21, 2015*

**Math**

Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y < 6 x > 0 ...
*March 21, 2015*

**Spanish Homework**

Thank you so much for you help! I get it now. :)
*March 20, 2015*

**Math**

Hi! I wanted to know how you would sketch the graph of this system of inequalities. Math problem: 2x2 + y ≥ 2 x ≤ 2 y ≤ 1
*March 14, 2015*

**Math Check**

Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9 My answers: 1.) (3,7/5) 2.) (-17,5)
*March 4, 2015*

**Chemistry**

A 45.4 grams of a gold metal sample was heated with the amount of energy of 228 J. Which of the following would the most plausible temperature change of the gold sample? The specific heat of gold is 0.131 J/g.oC. 12.8 oC to 38.3 oC 24.4 oC to 81.6 oC 23.8 oC to 62.1 oC 38.3 oC...
*February 28, 2015*

**Math**

Look for the angle (θ) between the vectors. Remember to round your answer to the nearest tenth. a.) u=<3,2> v= <4,0> b.) u = 2i - 3j v = i - 2j
*February 24, 2015*

**Math **

Hi! So I asked about this question earlier and I've been trying to solve it with the directions I was given by someone before, but, I'm still confused and keep getting weird numbers. Can someone help me with this? Directions: Find the angle, θ, between the vectors...
*February 20, 2015*

**Math**

Hi! Can someone help me with these? Thanks a bunch! :) 1.) Find the dot product. <0, 3> ∙ <4, -2> 2.) Find the dot product of u and v. u = <-4, 1> v = <2, -3>
*February 20, 2015*

**Math**

Hi! Can someone help me with these? Thanks a bunch! :) 1.) Find the dot product. <0, 3> ∙ <4, -2> 2.) Find the dot product of u and v. u = <-4, 1> v = <2, -3>
*February 19, 2015*

**physics**

A football is kicked at ground level with a speed of 17.9m/s at an angle of 36.0∘ to the horizontal. How much later does it hit the ground?
*February 5, 2015*

**physics**

A ball thrown horizontally at 13.0m/s from the roof of a building lands 21.4m from the base of the building. How tall is the building?
*February 5, 2015*

**Finance**

The Health Corp issued an 12%, 15 yr bond 5 yrs ago. At the time of issue the bond's par value was $1,000. Comparable bonds are yielding 10% today. What must Health Corp's bond sell for in today's market to yield 20% (YTM) to the buyer? Assume bond pays interest ...
*January 28, 2015*

**Math**

Find the product 8 1/3 x 3/5 in simplest form Find the product 5 1/2 x 3 1/3 in simplest form Use distributive property to find the product 4 2/5 x 10
*January 28, 2015*

**Precalc/Trig**

I don't understand how to do these problems: Find two pairs of polar coordinates for each point with the given rectangular coordinates if 0 ≤ θ ≤ 2π. Round to the nearest hundredth, if necessary. 17. (2, -3) Answers: (3.61, 5.30) and (-3.61, 2.16) 19...
*January 21, 2015*

**Precalc/Trig**

Sorry, I mistyped the question. The 2 roads intersected at 120 degrees. I got 747.48, is this correct? Sorry and thanks again.
*December 4, 2014*

**Precalc/Trig**

Thanks! But why wouldn't it be cos120 degrees? Because it's a straight line and 180-60 = 120?
*December 4, 2014*

**Precalc/Trig**

2 roads intersect at an angle of 60 degrees. A friend's mail box is 434 feet from that intersection and your mailbox is on the other road and is 525 feet from the intersection. How far is it from your mailbox to your friend's mailbox? I got 1016.66 feet, but that is ...
*December 4, 2014*

**philosophy**

Show at least one metaphysical account of reality For example, you might discuss Plato, Aristotle, or the Cartesian method. Make sure that you include an account of reality and truth and discuss how (and/or whether) human beings are capable of knowing reality with any ...
*December 4, 2014*

**Precalc/Trig**

I have no idea how to solve this one problem: Round to two decimal places. Two observers 25 feet apart, sight to the top of the tree. If the angle of elevation to the top of the tree from the observer closest to the tree is 30 degrees and the angle of elevation from the ...
*December 1, 2014*

**English**

All of the following statements about simple sentences are true except a. a simple sentence consists of a subject and a verb. b.a simple sentence may have two or more subjects. c.a simple sentence may have two or more verbs. d.a simple sentence may contain a coordinating ...
*November 11, 2014*

**Precalc/Trig**

Sorry there are quite a few problems, but I just need to know if these are correct (and if they aren't, where I went wrong): 1. Solve these equations. tanθ = -√3 θ = 2π/3 + kπ θ = 5π/3 + kπ 2. secθ = √2 θ = π/4...
*November 11, 2014*

**biology**

Various forms of a trait may be more or less ________ under given environmental conditions.
*November 10, 2014*

**Math **

14 boys play basketball, 12 boys play soccer, 16 boys play baseball. How many boys play basketball, soccer, or baseball?
*October 28, 2014*

**Harmon**

If light travels 10,000km ( 3.3 x 10 to the -2 power) seconds, how will it take to travel one meter. I know 1 meter = 0.001km
*October 19, 2014*

**Quantitative Reasoning (math)**

A round silo is 60 ft tall and has a 15 ft radius. About high would a load of 32,000 cubed feet fill the silo to? Do I start with pie*radius squared?
*October 10, 2014*

**statistics**

in order to estimate the mean amount of time computer users spend on the internet ea mn, how many people do i interview to have 90% confident sample mean within 11 min of the pop mean? Assum sd= 203 min
*October 8, 2014*

**chemistry**

the reaction of 7.10g carbon with excess O2 yields 12.25g of CO2. what is the percent yield of this reaction? I have tried everything and looked through all of my notes and nothing is working for stiochiometry
*October 6, 2014*

**Physics**

A glider of length 10.1 cm moves on an air track with constant acceleration. A time interval of 0.732 s elapses between the moment when its front end passes a fixed point circled A along the track and the moment when its back end passes this point. Next, a time interval of 1....
*September 16, 2014*

**algebra**

Find the standard form for the equation of a circle (x−h)^2+(y−k)^2=r^2 with a diameter that has endpoints (−8,−10) and (5,−4). Find the h= -1.5 k= -7 r=? I do not understand how to find the radius.
*September 14, 2014*

**Quantitative Reasoning (math)**

Your weight on the moon is relative to your weight on Earth. Neil Armstrong weighed 360 lbs. in his moon gear while on Earth, but on the moon he only weighed 60 lbs. What is the ratio of the Earth weight to the moon weight? How much would you weigh (approximately) on the moon?
*September 11, 2014*

**Quantitative Reasoning (math)**

One out of every five people who buys ice cream buy vanilla ice cream. If a store sells 125 ice cream cones in one day, about how many will be vanilla? I know how to solve the proportion once I set it up, but I cant figure out how to set it up
*September 10, 2014*

**Algebra**

The length of a rectangle is 1 foot less than twice the width, and the area of the rectangle is 21 ft.². Find the dimensions of the rectangle
*September 7, 2014*

**Precalculus/Trig**

I can't seem to prove these trig identities and would really appreciate help: 1. cosx + 1/sin^3x = cscx/1 - cosx I changed the 1: cosx/sin^3x + sin^3x/sin^3x = cscx/1-cosx Simplified: cosx + sin^3x/sin^3x = cscx/1-cosx I don't know where to go from there. 2. (sinx + ...
*August 15, 2014*

**Precalculus/Trig**

Prove the following identity: 1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake somewhere: Converted 1/tanx: 1/sinx/cosx + sinx/cosx = 1/sinxcosx Simplified 1/sinx/cosx: cosx/sinx + sinx/cosx = 1/sinxcosx Found common ...
*August 14, 2014*

**Math**

Sorry- it was 1/3c = 6b^2 + 2. I can see your way of substituting, though!
*August 4, 2014*

**Math**

Actually, just did it again and got (D). However, it's an SAT question and I need the fastest way to solve it... what I did was plug in values for a and b (3 and 2, respectively) then find c (78) and plug a (3) back into each of the choices to see if c (78) and the answer ...
*August 4, 2014*

**Math**

If 2a = 3b, 1/3c = 6b^2, and b > 0, what is c in terms of a? The answer choices are: (A) 8a^2 + 6 (B) 8a^2 + 12 (C) 12a^2 + 6 (D) 18a^2 + 6 (E) 18a^2 + 12 Thank you!
*August 4, 2014*

** SP180.1.2 Principles of Public Speaking**

i need help with my outline. not sure where to go. i am at a complete loss i know i want my topic to be Why banning the use of cell phones while driving should be mandatory nationwide I. TITLE: Why banning the use of cell phones while driving should be mandatory nationwide A. ...
*June 12, 2014*

**personal finance**

If Bridgette marrow is a sophomore at state college ad is running out of money. wanting to continue her education, Bridget is considering a student loan. Explain her options. How can she best minimize her borrowing costs and maximize her flexibility?
*June 8, 2014*

**algebra 2 and Trigeonomerty**

a bag contains 12blue, 10 green and 6 red and 2 white marbles. a) If you draw 3 marbles without putting them back, what is the probability that all 3 are blue? 12/30 * 9/27 =0.133? b) If you draw 2 marbles without putting them back, what is the probability that neither is blue...
*May 27, 2014*

**Economics help please!!!**

In a specific industry, two dominant firms work together to set prices. We call this A. competition. B. collusion. C. market dominance. D. market influence. Answer this Question
*May 22, 2014*

**Economics**

Im thinking A. Am i correct?
*May 22, 2014*

**Economics **

Unemployment is on the rise though inflation is quite low. Gross Domestic Product is rising but more slowly than the goal rate. The Federal Reserve may buy government securities in open market operations in order to A. increase the money supply and encourage economic growth. B...
*May 22, 2014*

**math**

The test scores for a math class are shown below 83,85,82,93,83,84,95,87,86,94 what is the standard deviation of the data set?
*May 19, 2014*

**math**

there are 4 blue tile,s 3 yellow tiles, 5 red tiles, and 2 green tiles. he draws a tile replaces it, and draws another tile. what is the probability he will draw a blue tile on both
*May 19, 2014*

**math**

In triangle PQR, m<P=53 degrees, PQ=7.4, and PR=9.6. What is m<R to the nearest degree
*May 19, 2014*

**Math Question**

Find an equation that models a hyperbolic lens with a=16 inches and foci that are 40 inches apart. Assume that the center of the hyperbola is the origin and the transverse axis is vertical
*May 19, 2014*

**Algebra help please!**

Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of students in your grade who eat five servings of fruit and vegetables each day? What is an example of a survey question that does not have bias?
*April 14, 2014*

**math**

Find the scale factor troy will to build his pool. The width is 625cm. The olympic pool is 50m long and 25m wide. Then find the length using the scale factor of troy pool
*April 13, 2014*

**Chemistry**

The final answer I got was NO + 3Cu^2+ + 4OH^- --> NO3- + 3Cu^+ + 2H2O Which was right. Thank you very much for your help.:)
*April 9, 2014*

**Chemistry**

So would this be right then NO + 2H2O + 3Cu^2+ + OH^- ---> 3Cu^+ + NO3^- + 4H^+ +OH^-
*April 9, 2014*

**Chemistry**

For a particular redox reaction NO is oxidized to NO3^- and Cu^2+ is reduced to Cu^+ . Complete and balance the equation for this reaction in basic solution. We are given this as a guide to start NO + Cu^2+ --> NO3^- + Cu^+ I started with: Cu^2+ + 2e- --> Cu No + 2H2O...
*April 9, 2014*

**Geometry**

#19. Given a regular octagon, find the measures of the angles formed by (a) two consecutive radii and (b) a radius and a side of the polygon.
*April 8, 2014*

**Geometry**

#7. Find the area of a polygon with the vertices of (-4,5), (-1,5), (4,-3), and (-4,-3).
*April 7, 2014*

**physics**

I have no idea that's why I came to this website
*April 3, 2014*

**Geometry**

The glide reflection Ry--x degree T <4,1> maps the P to (4,3). Find the coordinates of P. Please help I'm really confused.
*March 31, 2014*

**Geometry**

Thank you Steve.
*March 27, 2014*

**Geometry**

Given the lengths of the sides of a triangle, identify the triangle as acute, right, or obtuse. 37,12,34 5,12,13 20,21,28
*March 27, 2014*

**algebra**

y/4=15/20 how do I solve the proportion? please explain it to me. I have several to do
*March 20, 2014*

**ratio**

given the proportion a/b=5/19, what ratio completes the equivalent proportion a/5= / ? a. a/19 b. b/19 c. 5/19 d. 19/b
*March 19, 2014*

**chemistry**

If a tank contains 55.2 g of butane, what volume, in liters, of oxygen is needed to burn all the butane at 0.850 atm and 25 degrees Celsius? Need to show work too.
*March 19, 2014*

**Chemistry**

1.695*10^-7
*March 18, 2014*