Tuesday
July 29, 2014

Posts by Tracy


Total # Posts: 743

business
describe scenarios that depicts the different ways to manage business commerce

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?

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

Algebra
factoring 18z+45+z^2

Algebra
Factoring 9w-w^3

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...

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 ph...

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 ph...

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...

Algebra
5670 compounded annually at a 3.5 interest rate once a year yields what in interest

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

Algebra
You did not give an answer

Algebra
2000/1.05^12

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-val...

Stats
Damon, thank you!

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.

Stats
These are my options. A.0.30 B.0.40 C.0.60 D.0.90

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!

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

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

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.

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

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...

Statistics
Thank you! :)

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...

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...

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 h...

STATS
Is the answer C?

STATS
So B is not the correct answer?

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 h...

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?

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.

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?

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?

STATS
Thanks!

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?

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

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

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

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.

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.

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

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...

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

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?

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 th...

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 th...

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 th...

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...

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

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.

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

Math
12''

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

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?

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...

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

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%?

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...

Algebra
Thank you

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

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

Algebra
thank you

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

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

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

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

Algebra (factoring Polynomials)
9w-w^3 2a^2+1+3a

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

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

Polynomials
In order for me to understand I need step by step explanations.

Polynomials
still confused

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%

algebra
find the quotient (-9x^2 + 3x^2- 15x) - (-3x)

Algebra
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%

Algebra
I have two questions dealing with financial polynomials. $6780 compounding 2.5%interest once a year yields? in interest 5760 compounding 3.5 interest once a year yields? in interest

Algebra
Ozark furniture company can obtain at most 3000 board feet of maple lumber for making its classic and modern maple rocking chairs. A classic maple rocker requires 15 board feet of maple and a modern rocker requires 12 board feet of maple. write an inequality that limits the po...

Algebra
a line passes through the point (4,1) and has a slope -4 write an equation for this line

Algebra
graph the line with slope -2/3 passing through (-5, -5)

Algebra
a line passes through the point (-7,-4) and has a slope of 3 write an equation for this line

Algebra
how do you find -4/5 on a graph?

Algebra
4x-3y=-6 finding the x and y intercept line based on a equation in standard form

Algebra parallel and perpendicular
Thank you. can you explain the steps that you used.

Algebra parallel and perpendicular
y=3/4x-1 write equation for a line parallel to the given line passing through (4,0)

Algebra
8(v-8)-2v=-28

Algebra
0.05(0.3m+35n)-0.8(0.09n-22m)

Algebra
It was not -2w it was 2w

Algebra
2w-3+3(w-4)-5(w-6)

Algebra
-2w-3+3(w-4)-5(w-6)

algebra 1
The sum of four consecutive integers is decreased by 30, the result is the fourth integer. Find the four integers.

english
what is the complete subject in romans held this festival on february 15

Phyics
A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 75.5 m/s2 for 1.58 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude (above the ground) wi...

Phyics
A hot-air balloon is rising upward with a constant speed of 4.00 m/s. When the balloon is 4.77 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

Accounting
You received an email from Carl the operations manager from the California Container division. They produce packaging for cell phones. Carl understands that his product is an important cash producer for the company. •The delivery price is based on long term contracts. ...

help with chem biochem
You have a 1 ml solution containing 100 uM Ethanol, and 1 mM NAD+. You then add 1 mg of alcohol dehydrogenase. Assume all of the ethanol gets converted to acetaldehyde . a) What will the final concentration of NADH be in the solution? 

help with chem biochem
Ethanol + NAD+  ----> acetaldehyde + NADH + H+  

help with chem biochem
Ethanol + NAD+  acetaldehyde + NADH + H+  You have a 1 ml solution containing 100 uM Ethanol, and 1 mM NAD+. You then add 1 mg of alcohol dehydrogenase. Assume all of the ethanol gets converted to acetaldehyde.  a) What will the final concentration of NA...

Math
A 120m cable TV tower casts a 96m shadow. Find the height of a nearby telephone pole that cast a 16m shadow.

Physics
An olympic sprinter can run 100yd in 9.0s. At the same rate, how long would it take the sprinter to run 100m?

Statistics
They all was wrong on (B).

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