Friday

March 27, 2015

March 27, 2015

Total # Posts: 130

**Physics**

A spaceship of mass 2.0×106kg is cruising at a speed of 4.6×106m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 5.2×105kg , is blown straight backward with a speed of 2.2×106m/s . A second piece, ...
*December 7, 2014*

**physics**

Suppose a roller-coaster car starts at a height of 39 m with a speed of 2.51 m/s. What will its speed be at height = 0m if the average force of friction is equal to 0.22 times its weight? The total distance traveled is 53m.
*October 13, 2014*

**Algebra1**

Oh I totally get it now thank you so much and also thank you for all your time I relley appreciate it God bless you🌼
*September 15, 2014*

**Algebra1**

Where does the second 9 come from?
*September 15, 2014*

**Algebra1**

Oh ok so is it no solution or real numbers? I think it's real numbers
*September 15, 2014*

**Algebra1**

Ok what next
*September 15, 2014*

**Algebra1**

-3(x+3)=-3(x+1)-5 how to solve for x please help / the answer has to be 6,,,-6,,,all real numbers,,, or no solution .???????????????????????????????????????
*September 15, 2014*

**Math**

Does randomization relate to real world data?
*September 7, 2014*

**math**

solve and graph 4x+3y=6
*March 18, 2013*

**School**

There are 7 cupcakes for the party. Each cupcake has 1 candle for each year of the birthday boy's age. There is also an extra candle on each cupcake for good luck. If 49 candles were used on the cupcakes, how old is the birthday boy? Explain.
*January 5, 2013*

**science**

if a DNA virus infects a cell, why must it produce RNA?
*December 2, 2012*

**statistics**

A repeated-measures study uses a sample of n = 20 participants to evaluate the mean differences among three treatment conditions. In the analysis of variance for this study, what is the value for dfbetween treatments?
*November 25, 2012*

**statistics**

For an experiment involving 2 levels of factor A and 4 levels of factor B with a sample of n = 5 in each treatment condition, what is the value for dfwithin?
*November 25, 2012*

**statistics**

For an experiment involving 2 levels of factor A and 4 levels of factor B with a sample of n = 5 in each treatment condition, what is the value for dfwithin?
*November 25, 2012*

**statistics**

Which of the following is used to calculate the degrees of freedom for the A x B interaction? a. dfbet. treatments – dfA – dfB b. dfA – dfB c. dfwithin – (dfA + dfB) d. dfbet. treatments – dfwithin
*November 23, 2012*

**statistics**

For an experiment involving 2 levels of factor A and 4 levels of factor B with a sample of n = 5 in each treatment condition, what is the value for dfwithin?
*November 23, 2012*

**statistics**

A repeated-measures study uses a sample of n = 20 participants to evaluate the mean differences among three treatment conditions. In the analysis of variance for this study, what is the value for dfbetween treatments?
*November 23, 2012*

**statistics**

A researcher used an analysis of variance to compare three treatment conditions with a separate sample of n = 8 participants in each treatment. The results of the analysis are shown in the following summary. Fill in all missing values in the table. (Hint: Start with the df ...
*November 15, 2012*

**statistics**

A researcher uses an analysis of variance to test for mean differences among three treatment conditions using a sample of n = 8 participants in each treatment. What degrees of freedom (df) would the F-ratio from this analysis have? a. df = 23 b. df = 2, 23 c. df = 3, 21 d. df...
*November 15, 2012*

**statistics**

A researcher reports an F-ratio with df = 2, 36 from an independent-measures research study. Based on the df values, how many treatments were compared in the study and what was the total number of subjects participating in the study? a. 2 treatments and 37 subjects b. 2 ...
*November 14, 2012*

**statistics**

An analysis of variance is used to evaluate the mean differences for a research study comparing three treatments with a separate sample of n = 6 in each treatment. If the data produce an F-ratio of F = 4.10, then which of the following is the correct statistical decision? a. ...
*November 14, 2012*

**statistics**

For an independent-measures ANOVA comparing three treatments with a sample of n = 5 in each treatment, what is the critical value for the F-ratio using α = .05? a. 3.88 b. 3.49 c. 3.74 d. 3.34
*November 14, 2012*

**statistics**

An analysis of variances produce SSbetween = 30, SSwithin = 60, and an F-ratio with df = 2, 15. For this analysis, what is the F-ratio? a. 30/60 = 0.50 b. 60/30 = 2.00 c. 15/4 = 3.75 d. 4/15 = 0.27
*November 14, 2012*

**statistics**

For which of the following situations would a repeated-measures research design be appropriate? a. comparing mathematical skills for girls versus boys at age 10 b. comparing pain tolerance with and without acupuncture needles c. comparing self-esteem for students who ...
*November 11, 2012*

**statistics**

An independent-measures study with n = 6 in each sample, produces a sample mean difference of 4 points and a pooled variance of 12. What is the value for the t statistic? a. 1 b. 2 c. 4/√2 d. 4/√8
*November 11, 2012*

**statistics**

The alternative hypothesis for an independent-measures t test states ______. a. There is no mean difference between the two populations being compared. b. There is no mean difference between the two samples being compared. c. There is a non-zero mean difference between the two...
*November 11, 2012*

**statistics**

An independent-measures study with n = 6 in each sample, produces a sample mean difference of 4 points and a pooled variance of 12. What is the value for the t statistic? a. 1 b. 2 c. 4/√2 d. 4/√8
*November 10, 2012*

**statistics**

A normal distribution has a mean of 36 and standard deviation of 4. What proportion of the distribution consisted of scores between x=34 and x=38? a, 0.6915 b, 2(0.3085)=0.6170 c, 0.1915 d, 2(0.1915)=0.3930
*November 9, 2012*

**statistics**

A researcher administered a treatment to a sample of participants selected from a population of 80. If the researcher obtains a sample mean of M=88. Which combination of factors is most likely to result in rejecting the null hypothesis? a, alpha level=0.01 and standard ...
*November 9, 2012*

**statistics**

A normal distribution has a mean of 100 and standard deviation of 20. What is the probability of randomly selecting a score less than 130 from this distribution? a, p=0.9032 b, p=0.9332 c, p=0.0968 d, p=0.0668
*November 7, 2012*

**statistics**

Under what circumstances can a very small treatment effect still be significant? a, if the sample size (n) is very large b, if the sample standard deviation is very large c, if the standard error of M is very large d, all of the other factors are likely to produce a ...
*November 7, 2012*

**trig**

Solve for x please? x/x+3 - 1/x+2 = x/2x+4
*October 28, 2012*

**Statistics**

A set of X and Y scores has SSx=10, SSY=20, and SP=8, what is the slope for the regression equation? a, 8/10 b, 8/20 c, 10/8 d, 20/8
*October 26, 2012*

**Statistics**

For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a, a,b b, b,a c, 0,a d, 0,b
*October 26, 2012*

**statistics**

A set of X and Y scores has Mx=4, SSx=10, MY=5, SSY=40, and SP=40. What is the regression equation for predicting Y from X? a, =0.25X-4 b, =4X+4 c, =X-6 d, =4X-11
*October 26, 2012*

**Statistics**

A set of X and Y scores has SSx=10, SSY=20, and SP=8, what is the slope for the regression equation? a. 8/10 b. 8/20 c. 10/8 d. 20/8 For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a. a,b b. b,a c. 0, a d. 0, b
*October 22, 2012*

**statistics**

A vertical line is drawn through a normal distribution at z = 0.50, and separates the distribution into two sections. What proportion of the distribution is in the larger section? a. 0.6915 b. 0.3085 c. 0.1915 d. 0.3830
*October 14, 2012*

**statistics**

What z-score values form the boundaries for the middle 60% of a normal distribution? a. z = +0.25 and z = –0.25 b. z = +0.39 and z = –0.39 c. z = +0.52 and z = –0.52 d. z = +0.84 and z = –0.84
*October 14, 2012*

**Statistics**

John drives to work each morning and the trip takes an average of μ = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of σ = 5 minutes. For a randomly selected morning, what is the probability that John’s drive to ...
*October 14, 2012*

**homework help**

which of the following are in the correct size order? a) nm, um, cm, mm, m b) m,um,cm, nm, mm c) um,nm,mm,cm,m d) nm,um,mm,cm,m e) none of the above
*September 26, 2012*

**homework help**

which temperature is colder? a) 50F b) 50C
*September 26, 2012*

**Algebra 2**

If Graham runs up 6 steps of the escalator, then it takes him 46.5 seconds to reach the top of the escalator. If he runs up 13 steps of the escalator, then it takes him only 36.0 seconds to reach the top. How many seconds would it take Graham to reach the top if he did not run...
*May 22, 2012*

**Physics**

What is the roll-off rate of the filter described with R = 2.2k and C = 0.0015 picofarad?
*May 15, 2012*

**Engineering**

What is the upper tripper point (UTP) of a comparator with hysteresis if R1 = 47 kÙ, R2 = 68 kÙ and the maximum positive output voltage is 10V?
*April 9, 2012*

**Physics**

What is the upper tripper point (UTP) of a comparator with hysteresis if R1 = 47 kÙ, R2 = 68 kÙ and the maximum positive output voltage is 10V?
*April 4, 2012*

**math**

The team won 16 of its 28 games. What was the team’s won-lost ratio?
*February 7, 2012*

**English Complements**

CALM! So its a predicate adjective
*December 8, 2011*

**English Complements **

The sea appearred calm in the morning. Identify the complements?
*December 8, 2011*

**Math**

There is a safe bond B which has 4 years before maturity and pays a coupon of 12% at regular annual intervals and a face value of $100 at maturity. (a) What will be the current price of bond B?
*December 5, 2011*

**Math**

he current term-structure of spot interest rates for safe zero-coupon bonds is as follows: Maturity, in years Interest rate(r) 1 8% 2 10% 3 11% 4 12% 5 13% There is a safe bond B which has 4 years before maturity and pays a coupon of 12% at regular annual intervals and a face ...
*December 4, 2011*

**economics**

The current term-structure of spot interest rates for safe zero-coupon bonds is as follows: Maturity, in years Interest rate(r) 1 8% 2 10% 3 11% 4 12% 5 13% There is a safe bond B which has 4 years before maturity and pays a coupon of 12% at regular annual intervals and a face...
*December 4, 2011*

**Math**

Term-structure of interest rates and Arbitrage The current term-structure of spot interest rates for safe zero-coupon bonds is as follows: Maturity, in years Interest rate (r) 1 8% 2 10% 3 11% 4 12% 5 13% There is a safe bond B which has 4 years before maturity and pays a ...
*December 3, 2011*

**algebra**

GRAPH .08.04.11<3
*October 10, 2011*

**math**

Name the corresponding part if polygon WXYZ polygon PQRS. QP =
*August 1, 2011*

**math**

Name the corresponding part if polygon WXYZ polygon PQRS. YZ =
*August 1, 2011*

**math**

Two angles are complementary. One of the angles is twice the other. The larger angle has a measure of
*July 23, 2011*

**math**

Given: l | | m m∠4 = 105° and m∠6 = 50°. m∠2 =
*July 23, 2011*

**math**

Two angles are complementary. One of the angles is twice the other. The larger angle has a measure of
*July 23, 2011*

**math**

If P(-2, 1) is rotated 90°, its image is
*July 21, 2011*

**math**

Given a dilation with the origin O (0, 0), by observation determine the scale factor "K." DO, K = (5, 0) (10, 0) The dilation an expansion. true or false
*July 21, 2011*

**math**

A reflection maps the point (2, 3) to the point (-2, 3). It is a reflection over the
*July 21, 2011*

**math**

For the transformation T, what is T-1? T : (x, y) (x + 4, y + 3) T-1: (x, y)
*July 21, 2011*

**math**

If a translation maps point (3, 2) to (4, 5); or T : (3, 2) (4, 5), indicate the image for (2, 4).
*July 20, 2011*

**accounting**

: Are there any differences between the organizations that adopt a particular accounting method? Please explain your answer.
*April 21, 2011*

**Chemistry**

What is the maximum mass of the lower molar mass product that can be formed when 71.0 g of solid barium bromide and 44.5 g chlorine gas react?
*April 10, 2011*

**algebra 1**

plz explain how to do this in detail: using only 39 cent and 24 cent stamps, charlie put $7.14 postage on a package he mailed to his sister. if he used twice as many 39 cent stamps as 42 cent stampsp, how many 24 cent stamps did he use??
*March 29, 2011*

**Math**

well each nuumber equals: 3.14, 5, .15, 3.873, and 2.5 now put them in order from least to greatest: .15 2.5 3.14 3.873 5 the median is 3.14 because you cancel one from each side each time... take off .15 and 5, then 2.5 and 3.873 as you can see, 3.14 is directly in the middle...
*March 29, 2011*

**math**

can someone help explain how to do this? allen has nickels dimes and quarters in his pocket. the number of nickels is 1 more than twice the number of quarters. the number of dimes is 1 less than the number of quarters. if the value of change in his pocket is 85 cents, how many...
*March 28, 2011*

**mat/117**

can someone please help me fiqure this out. factoring polynomials (C-5)-^2
*February 19, 2011*

**mat/117**

what would be the answer
*February 18, 2011*

**mat/117**

can some one help with this polynomial. (C -5)-^2
*February 18, 2011*

**algebra 1A**

solve please on a line graph y-5>-18
*February 4, 2011*

**algebra 1a**

Help and explain please 9m+n=22 m-3n=18
*January 30, 2011*

**algebra 1a**

can someone help in solving this and use set builder notations to describe the solution Please 4(8-2x)+2x<5(9+3x)
*January 30, 2011*

**mat/116**

Thanks you guys for the past help, but I am stuck on this line graphing. So can someone help in solving and graphing this compound inequality. 9x+1>= -53 or 4x+3>= -9 what would the solution {xlx>...}be.
*January 29, 2011*

**mat/116**

can someone help me in determining wether these numbers are a solutions of this inequality. y-11>2y-2 3,-16,-17,-1
*January 29, 2011*

**mat/116**

can someone help in finding the ordered pair for this equation. 7x-9y=63 9y-7x=-63
*January 29, 2011*

**algebra 1**

can someone show me how to graph this x+4y=8
*January 15, 2011*

**algebra1**

Find the domain of the function g(x)= 4/3-5x I am sorry this is a fraction
*January 15, 2011*

**algebra 1**

find the slope intercept equation of the line that has the given characteristics. slope 6.7 and y intercept (0,-7) Thanks.
*January 15, 2011*

**algebra 1**

graph the equation by plotting points y= -3
*January 15, 2011*

**algebra1**

can someone help me with the addition and multiplication principle with this equation. 2.4 + 22.0 > 55.0 - 8.6x
*December 19, 2010*

**algebra**

can someone explain and answer this equation for me. 7y - 6 < 6y -1 Thanks
*December 18, 2010*

**algebra 1**

can some one please help me with this equation using the addition principle -9/5 + x = -2/9 Please explain how you got your answer in all phases. Thanks
*December 8, 2010*

**algebra 1**

Hi Ms. Sue again, I hate to be a pest but how did you get the two in 2/10, I am really brain dead today.
*December 7, 2010*

**algebra 1**

Hi Ms. Sue can you tell me how you got 2/10 in the equation that I submited a few min. ago the equation was, x + 7/10 = - 1/5
*December 7, 2010*

**algebra 1**

I need someone to help me fiqure this equation out and then explain how you got the answer. x + 7/10 = -1/5
*December 7, 2010*

**algebra 1**

use multiplying by 1 to find an expression equivalent to 11/14 with a denomenator of 56c the equivalent expression is-----
*December 5, 2010*

**algebra 1**

multiply -2.7(-26)=
*December 4, 2010*

**algebra 1**

how do you find the answer to 5.5x = 55.0
*December 4, 2010*

**algebra 1**

5.5x=55.0 using the mutiplication principle. Oh by the way thanks Bob and Sue, you don't know how much you have helped me.
*December 4, 2010*

**algebra 1**

Determine which real number corresponds to the situation. The record low temperture for a date is 25.6 degrees below zero. The corresponding number for this sentence is-----.
*December 4, 2010*

**algebra 1**

can you help with this one -7 - (-2)=
*December 4, 2010*

**algebra 1**

can you divide (9)* (9)= if so what would the answer be
*December 4, 2010*

**algebra 1**

what is the solution for this equation -9/16 - 7/16 =
*December 4, 2010*

**algebra**

use multiplying by 1 to find an expression equivalent to 11/14 with a denominator of 56c the equivalent expression is
*November 14, 2010*

**economics**

You are planning to estimate a short- run production function for your firm, and you have collected the following data on labor usage (L) and output (Q): Labor usage Output 3 1 7 2 9 3 11 5 17 8 17 10 20 15 24 18 26 22 28 21 30 23
*November 6, 2010*

**economics**

Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You recommend the buyout because you believe that new management could substantially ...
*November 6, 2010*

**7th math**

a/7 x 42/a
*October 9, 2010*

**algebra**

The equations are 6.5x + 8.3y + 7.1 = 0 and -7.2x + 3.4y - 6.6 = 0. Find the slope and x and y intercepts of each equation. For the first equation I got the x intercept as -10.92 and y intercept as -8.55 but I can't figure out the slope. For the second one i got the x as...
*September 23, 2010*