Saturday
July 4, 2015

Posts by tracy


Total # Posts: 777

MATH
If the demand function for a commodity is given by equation p^2+12q=18 and the supply function is given by the equation 700-p^2+6q=0, find the equilibrium quantity and price
June 15, 2015

math
For f(x) and g(x) given below, find the following, f(x) = (x-1)^5, g(x)=1-6x a) (f of g)(x)= -7776x^5 b) (g of f)(x)= -6x^5+30x^4-60x^3+60x^2-30x+7 c)f(f(x)= d) f^2(x)=(f*f)(xx)= Im stuck on c and d
June 15, 2015

statistics
what is the r value
June 13, 2015

COLLEGE MATH
8
June 7, 2015

ENGLISH
#speech. TopIc:afRican slaughter rituals should be allowed in the suburbs?
April 18, 2015

solve math problem
A group of 9 workers decides to send a delegation of 3 to their supervisor to dicusss their grievences. c.) If there are 4 women and 5 men in the group, how many delegations would include at least 1 women? I know I have to use combination C(9,1)x C(9,4) but I'm lost after ...
April 10, 2015

Algebra
How do I find the cost of a cell phone plan if I use 400 day-timme minutes. is it the cost times the minutes plus contracts if any or just cost times the minutes. Please help me!
March 10, 2015

intermeidatealgebra
9a+7b/2-9a-7b/2
February 25, 2015

intermediatealgera
2x/x-2-4/x-2
February 25, 2015

intermediatealgera
9y^2/y-1+-9y/y-1
February 25, 2015

intermeidatealgebra
x+3/15+8/15
February 25, 2015

Math
AorC
February 25, 2015

algebra
2(-2)-4(-3)/5-8 -4-4(-3)/5-8 -4+12/5-8 -8/3
January 25, 2015

algebra
5X2-3to the second power over [3to the second power-(-2)] to the second power. 5X2=10-9=1 9X2=18=134
January 25, 2015

health
A friend plays video games 6 hours a day and gets upset when called to dinner with the family. This is a sign of? (a)anxiety disorder (b)a phobia (c)bipolar disorder (d)impulse control disorder
December 31, 2014

college algebra
Find the Inverse (x)=√2x+9
December 1, 2014

math
a city is served by two newspapers-the Tribune and the Daily News. Each Sunday a reader purchases one of the newspapers at a stand. The following transition matrix contains the probabilities of a customers buying a particular newspaper in a week given the newspaper purchased ...
November 14, 2014

Algebra please help out
In each bouquet of flowers, there are 4 roses and 6 white carnations. Complete the 4 and 6 table to find out how many roses and carnations there are in 4 bouquets of flowers? Please help answer
October 29, 2014

Algebra
Please help out thx
October 28, 2014

Algebra
Write 3 ratios equivalent to the ratio of boys to girls on the bus is 20/15? Please help answer
October 28, 2014

Limits
Lim of [1/(3+x)]-(1/3)/x as x approaches 0 is?
September 14, 2014

math
Rainfall for September in Fiji averages 11" according to World Travel Guide. This year it rained 3% less. How many inches did it rain this year? (Round to the nearest tenth.)
September 8, 2014

Newtons Law of Cooling
using Newton's Law of Cooling: At 10:30 am the medical examiner arrives at a crime scene where a dead body has been found. The temperature of the body is 80 degrees F and the thermostat for the room in which the body was found is set at 68 degrees F. One hour later the ...
September 4, 2014

physics
Jack drops a stone from rest off of the top of a bridge that is 24.4 m above the ground. After the stone falls 6.6 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time. What was the initial velocity of Jill's rock? Assume upward is ...
August 30, 2014

Accounting
On October 10, 2010, Mason Engineering Company completed negotiations on a contract for the purchase of new equipment. Under the terms of the agreement, the equipment may be purchased now or Mason may wait until January 10, 2011, to make the purchase. The cost of the equipment...
August 13, 2014

business
describe scenarios that depicts the different ways to manage business commerce
June 8, 2014

Delcambre High
a trail mix recipe calls for 1/3 pound of mixed nuts, 4/15 pound of raisins and 2/5 pounds of granola. What is the ratio of raisins to mixed nuts in simplest form?
June 4, 2014

POL201
The tendency of Congress to defer to the President in foreign policy has at times led to
May 16, 2014

Algebra
factoring 18z+45+z^2
May 6, 2014

science
Hello Ms.Sue I think the answer to question number 5. Is Kinetic. Could you let me know if this is correct? Thank you!
May 6, 2014

Algebra
Factoring 9w-w^3
April 30, 2014

math
Evidence of an increased risk of lung cancer associated with cigarette smoking was sought by Doll and Hill. In one study, 649 lung cancer cases were matched by age, and gender to 649 controls; 647 of the cases and 622 of the control had a history of smoking cigarettes. a. Name...
April 28, 2014

epidemiology
In another study, the smoking habits of 34,445 male physicians were obtained by mailed questionnaires. Deaths among these physicians over the subsequent years were identified though contact with the office of the Registrar General. The death rates from lung cancer of these ...
April 27, 2014

epidemiology
In another study, the smoking habits of 34,445 male physicians were obtained by mailed questionnaires. Deaths among these physicians over the subsequent years were identified though contact with the office of the Registrar General. The death rates from lung cancer of these ...
April 27, 2014

Epidemiology
Evidence of an increased risk of lung cancer associated with cigarette smoking was sought by Doll and Hill. In one study, 649 lung cancer cases were matched by age, and gender to 649 controls; 647 of the cases and 622 of the control had a history of smoking cigarettes. a. Name...
April 27, 2014

Algebra
5670 compounded annually at a 3.5 interest rate once a year yields what in interest
April 25, 2014

Algebra
P=A (1+r)6 -n P=2000 (1+0.05) ^-n P=2000 (1.05)^ -12 =?
April 24, 2014

Algebra
You did not give an answer
April 24, 2014

Algebra
2000/1.05^12
April 24, 2014

STATS
Suppose we are testing the null hypothesis H0: ì = 20 and the alternative Ha: ì 20, for a normal population with ó = 5. A random sample of 25 observations are drawn from the population, and we find the sample mean of these observations is = 17.6. The P-...
April 5, 2014

Stats
Damon, thank you!
March 29, 2014

Stats
Assume that event A occurs with probability 0.4 and event B occurs with probability 0.5. Assume that A and B are disjoint events. The probability that either event occurs (A or B) is A. 0.0 B. 0.7 C. 0.9 D. 1.0.
March 29, 2014

Stats
These are my options. A.0.30 B.0.40 C.0.60 D.0.90
March 29, 2014

Stats
I added the mean of 21 and SD of 10 and the probability is 0.9715. That is not one of my options, please help!
March 29, 2014

Stats
The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is
March 29, 2014

Stats
Let the random variable X be a random number with the uniform density curve given below. P(0.6 < X < 0.9) is
March 29, 2014

Statistics
Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ score separating the top 37% from the others. Answer in one decimal place.
March 28, 2014

Chemistry
What is the enthalpy change if 25.0 g of methane are burned? 890kJ of heat released for every mole of methane that reacts. CH4 + 2O2 = CO2 + 2H2O
March 18, 2014

Stats
4. A least squares regression line to predict a student’s Stat145 test score (from 0-to-100) from the number of hours studied was determined from a class of 55 Stat145 students: ̂ = 48.2 + 2.21x. One student in the class studied for 18 hours and scored 82 on the exam...
March 7, 2014

Statistics
Thank you! :)
February 25, 2014

Statistics
In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a particular controlled distance (measured in thousands of miles), and afterward the tread depth was measured. Tread depth is measured in “mils.” Here...
February 25, 2014

STAT - Please check answer
In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a particular controlled distance (measured in thousands of miles), and afterward the tread depth was measured. Tread depth is measured in “mils.” Here...
February 24, 2014

Math
Archaeologists often find only parts of ancient human remains. For example, they may find a small finger bone, called the metacarpal bone. Is it possible to predict the height of a human from the length of his or her metacarpal bone? To investigate, a researcher measures the ...
February 20, 2014

STATS
Is the answer C?
February 20, 2014

STATS
So B is not the correct answer?
February 20, 2014

STATS
Archaeologists often find only parts of ancient human remains. For example, they may find a small finger bone, called the metacarpal bone. Is it possible to predict the height of a human from the length of his or her metacarpal bone? To investigate, a researcher measures the ...
February 20, 2014

algebra & trigonometry
One number x. So, the other number: 210 – x. According to the given condition, x^2 = 210 – x, ox^2 + x – 210 = 0, or (x + 15) (x – 14) = 0, or x = –15 or 14. Therefore, one number is either –15 or 14 and the other number is either (210 + 15) = 225...
February 11, 2014

STATS
Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. Using the 68-95-99.7 rule, what is the lower bound for the weight of the top 2.5% of students?
February 11, 2014

STATS
Yes! Thanks. :) I have one more question. Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. Using the 68-95-99.7 rule, what is the lower bound for the weight of the top 2.5% of students.
February 10, 2014

STATS
Thank you that helps a lot. I have been struggling with this. C. What percent of students weigh less than 60.1 kilograms? Z=(60.1-75.5)/10.3=-1.49 I checked the z-table and the probability is .0681. .0681*100=6.8% Is this problem correct?
February 10, 2014

STATS
Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. B. What percent of students have weights greater than 80.1 kilograms?
February 10, 2014

STATS
Thanks!
February 10, 2014

STATS
Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. A. 45% of the student weights are above ____ kilograms? Z=.3264=x-75.5/10.3 Now what?
February 10, 2014

stats
how do I find the margin of error for the given values of c,s,and n c=0.95, s=2.1,n=100
December 5, 2013

Physical Science
(c) ____Cl2(g) + ____KBr(aq)h____Br2(l ) + ____KCl (aq) (d) ____CH4(g) + ____O2(g)h____CO2(g) + ____H2O(l )
December 4, 2013

Math URGENT PLEASE
If a car in 1963 cost @$2,400 How much would that be in 2012
November 25, 2013

Math URGENT PLEASE
Please Help, The last question has to be done by midnight. A chevy Bel Air, a classic car today, cost $2,400.0 new in mid-1963. How much would that be in 2012 dollar.
November 25, 2013

algebra
Please Help, The last question has to be done by midnight. A chevy Bel Air, a classic car today, cost $2,400.0 new in mid-1963. How much would that be in 2012 dollar.
November 24, 2013

Mathematics
calculate the CPI for this year and for 5 years from now. Project the price 5 years from now of an item that you commonly buy. **Dunkin Donuts Coffee**** $2.04 Please help, I know I am missing something. Thanks
November 24, 2013

Math
HELP: Does THIS LOOK OK SO FAR? NEED HELP WITH THE REST, PLEASE! A 1963 Chevy Bel Air, a classic car today, cost $2400 new in mid-1963. How much would that be in 2012 dollars? Cost 2012 = CPI in 2012 Cost 1963 = CPI in 1963 Cost in 2012 = 232.0 $2,400 30.6 Cost in 2012= $2,400...
November 24, 2013

math
A 1963 Chevy Bel Air, a classic car today, cost $2400 new in mid-1963. How much would that be in 2012 dollars?
November 23, 2013

math
Saving for retirement by contributing the same amount each month from your 23rd birthday until your 65th birthday, in an account that pays a steady 4% annual interest compounded monthly. How much will be in your fund at age 65 if you save $100 a month?
November 23, 2013

Math
A pair of newborn male and female rabbits is placed in an enclosure to breed. The rabbits start to bear young TWO MONTH after their own birth. At the end of each month, they have another male-female pair, which in turn mature and start to bear young ONE MONTH later. None of ...
November 17, 2013

Math
A pair of newborn male and female rabbits is placed in an enclosure to breed. The rabbits start to bear young ONE MONTH after their own birth. At the end of each month, they have another male-female pair, which in turn mature and start to bear young ONE MONTH later. None of ...
November 17, 2013

Math
A pair of newborn male and female rabbits is placed in an enclosure to breed. The rabbits start to bear young one month after their own birth. At the end of each month, they have another male-female pair, which in turn mature and start to bear young one month later. None of ...
November 17, 2013

Math
With these ideas in mind, evaluate—in a paragraph each—the following data depictions. U.S. Federal Budget Policy Outlays by Category for 2015. (U.S. Federal Budget for 2011.) p. 153. This display shows expected expenditures of the federal government in 2015, totaling...
November 17, 2013

math
If anyone has "For All Practical Purposes" I am stuck on page 680, Writing Project # 2. It is just to long to post.
November 17, 2013

Math
How can I rewrite this statement for my math class: "The war funding bill...passed this week, but with three times fewer Democrats voting for it than did the last year.
November 16, 2013

Math
If a dollhouse was made out of the same material as a real house, how would their weights compare?
November 16, 2013

Math
12''
November 16, 2013

Math
Dollhouse and the furnishing are built to a scale of exactly 1 in. to 1 ft, what is the linear scaling factor?
November 16, 2013

Math
Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%? Some people tell me approx. 500% and 405% Which is it and how do you do the math for the correct answer?
November 15, 2013

math
Please I need help: I need to figure out the procedure to this question: Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%? How do I figure this out? Thank you very...
November 14, 2013

Math
Steve, Sam or Salah, How do you come up with your answers of 500%, 505 405% Please and Thank you, Tracy
November 14, 2013

Math
Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%?
November 14, 2013

Algebra (Pythagorean Theorem)
Ahmed has half of a treasure map. which indicates that the treasure is buried in the desert 2x + 6 paces from castle rock. Vanessa has the other half of the map. Her half indicates that to find the treasure one must get to castle rock walk x paces to the north and then walk 2x...
November 4, 2013

Algebra
Thank you
November 4, 2013

Algebra
I was not asking if it was a Pythagorean Theorem? This is the equation that I have to solve
November 4, 2013

Algebra
This is a Pythagorean Theorem x^2 + (2x + 4)^2 = (2x + 6)^2
November 4, 2013

Algebra
thank you
November 1, 2013

Algebra
Help I'm stuck I need to factor a trinomial expression using the AC method 15x^2 + 31x + 2
November 1, 2013

Algebra
I need to know how to factor these in A-C method form 2a^2+1+3a 9w-w^3
October 31, 2013

Algebra (factoring Polynomials)
I need to know how to factor these in A-C method form 2a^2+1+3a 9w-w^3
October 31, 2013

Algebra (factoring Polynomials)
Thank you. Can you please do this in the ac method form?
October 31, 2013

Algebra (factoring Polynomials)
9w-w^3 2a^2+1+3a
October 31, 2013

math
if Ted's front porch is 9 and 3/4 inches by 4 feet.How long is his porch?
October 29, 2013

Algebra
(-9x^3 + 3x^2 -15x)divided by (-3x) Find the quotient
October 28, 2013

Polynomials
In order for me to understand I need step by step explanations.
October 28, 2013

Polynomials
still confused
October 28, 2013

Polynomials
P dollars is invested at annual interest rate r for 1year If the interest is compounded semiannually then the polynomial P(1+r/2)^2 represents the value of the investment after 1 year. rewrite the expressions without parentheses evaluate the polynomial if P=5670 and r=3.5%
October 28, 2013

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