# Posts by dEE

Total # Posts: 937

Convert the following mixed number to an improper fraction: 12 3/4

college math HELP!!!!!
i need to find equilibrium price using these two equations: P= -(1/25)x+190 P= (1/75)x+70 the equilibrium quantity is: 2250 units the equilibrium price is: ______?

math HELP!!
The quantity demanded x each month of Russo Espresso Makers is 250 when the unit price p is \$180; the quantity demanded each month is 1000 when the unit price is \$150. The suppliers will market 750 espresso makers if the unit price is \$80. At a unit price of \$90, they are ...

college math HELP!!!!!
The quantity demanded x each month of Russo Espresso Makers is 250 when the unit price p is \$180; the quantity demanded each month is 1000 when the unit price is \$150. The suppliers will market 750 espresso makers if the unit price is \$80. At a unit price of \$90, they are ...

college finite math
The quantity demanded x each month of Russo Espresso Makers is 250 when the unit price p is \$180; the quantity demanded each month is 1000 when the unit price is \$150. The suppliers will market 750 espresso makers if the unit price is \$80. At a unit price of \$90, they are ...

college finite math
A product may be made using Machine I or Machine II. The manufacturer estimates that the monthly fixed costs of using Machine I are \$17,000, whereas the monthly fixed costs of using Machine II are \$14,000. The variable costs of manufacturing 1 unit of the product using Machine...

college finite math
A division of a company produces "Personal Income Tax" diaries. Each diary sells for \$6. The monthly fixed costs incurred by the division are \$30,000, and the variable cost of producing each diary is \$1. (a) Find the break-even point for the division. (x, y) = (6000...

college finite math
Cowling's Rule is a method for calculating pediatric drug dosages. If a denotes the adult dosage (in milligrams) and if t is the child's age (in years), then the child's dosage is given by D(t) = (t + 1/24)a (a) Show that D is a linear function of t. Hint: Think of...

college finite math
Cowling's Rule is a method for calculating pediatric drug dosages. If a denotes the adult dosage (in milligrams) and if t is the child's age (in years), then the child's dosage is given by D(t) = (t + 1/24)a (a) Show that D is a linear function of t. Hint: Think of...

college finite math
For wages less than the maximum taxable wage base, Social Security contributions (including those for Medicare) by employees are 7.65% of the employee's wages.† (a) Find an equation that expresses the relationship between the wages earned (x) and the Social Security ...

Physics
In a vacuum, two particles have charges of q1 and q2, where q1 = +3.7 µC. They are separated by a distance of 0.22 m, and particle 1 experiences an attractive force of 3.5 N. What is q2 (magnitude and sign)?

english
What part of speech is coursework?

college Algebra
Write the system as a matrix and solve it by Gauss-Jordan elimination. (If the system is inconsistent, enter INCONSISTENT. If the system has infinitely many solutions, show a general solution in terms of x, y, or z.) x + 2y − z = 5 2x − y + z = 2 3x − 4y + 3z...

college Algebra
Use matrix methods to solve the problem. To use space effectively, librarians like to fill shelves completely. One 105-inch shelf can hold 3 dictionaries, 5 atlases, and 1 thesaurus; or 6 dictionaries and 2 thesauruses; or 2 dictionaries, 4 atlases, and 3 thesauruses. How wide...

college Algebra
thank you

college Algebra
Use matrix methods to solve the problem. 120,000 gallons of fuel are to be divided between two airlines. Triple A Airways requires three times as much as Unity Air. How much fuel should be allocated to Triple A? ______ gal

college Algebra
i have no clue why its not working... i tried: 0,0,0 9,9,9 INCONSISTENT

college Algebra
its saying its wrong? :/

college Algebra
i think you used the wrong one for the third line... x+z=18 y+z=18 x-z=0

college Algebra

college Algebra
Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.) x + y = 18 y + z = 18 x − z = 0

college Algebra
Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.) x + y + z = 7 2x + y + z = 14 x + 2y + 3z = 2

College Algebra
thank you, big help

College Algebra
Use a system of equations to solve the problem. A rectangular picture frame has a perimeter of 2,200 centimeters and a width that is 300 centimeters less than its length. Find the area of the picture. _____ cm2

math
12-4=8 8-4=4 4-4=0

Physics
A 0.125 kg meter stick is rotating (as shown to the right) in a horizontal plane about an axis through its center at 3.45 rad/s. a) Find the rotational inertia of this stick. At one of its ends, find its b) speed and c) centripetal acceleration. If this stick comes to rest in ...

Algebra
Thanks, Steve. I was having a mental block on this one and knew it was easy! I appreciate your help.

Algebra
This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

algebra 1
Each of the values in your table shows an x value and a corresponding y value. So, your ordered pairs are: {(4,3), (2,5), (2,2), (3,5), (1,1)} Graph them. The domain is {1,2,3,4} or the x values in numerical order and not listed more than once. The range is {1,2,3,5} or the y ...

algebra
that's exactly what I got but it keeps saying it is wrong.

algebra
find all roots of the polynomial equation. x^5+3x^4-2x^3-14x^2-15x-5=0.

algebra
thank you soooo much!!!

algebra
a hot-air balloon is tethered to the ground and only moves up and down. You and a friend take a ride on the balloon for approximately 25 minutes. On this particular ride the velocity of the balloon, v(t) in feet per minute, as a function of time, t in minutes, is represented ...

algebra
Help me factor x^2 -2x - 4 = 0 and 3x^2 + x + 3 = 0.

college algebra
A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.) x^3 + 3x^2 − 14x − 20 = 0; {−5}

college algebra
Use long division to perform the division. (Express your answer as quotient + remainder/divisor.) (x^4 + 7x^3 − 2x^2 + x − 1) / (x − 1)

college algebra
Solve the exponential equation using logarithms. Give the answer in decimal form, rounding to four decimal places. (Enter your answers as a comma-separated list.) 4^(x − 3) = 3^(2x) x = _____

college algebra
Use a calculator to help solve the problem. An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 40% more of the substance? (Round your answer to one decimal place.) ____hr

college algebra
not sure how to find the t, tried using the log approach but can't get the right answer.

college algebra
An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 40% more of the substance? (Round your answer to one decimal place.) ____hr

college algebra
no it looks more like this: 4^(x-3)=3^2x

college algebra
Solve the exponential equation using logarithms. Give the answer in decimal form, rounding to four decimal places. (Enter your answers as a comma-separated list.) 4x − 3 = 32x x = _____

college algebra
In 4 years, 30% of a radioactive element decays. Find its half-life. (Round your answer to one decimal place.) _____ yr

college algebra
thank you

college algebra
Use a calculator to find y to four decimal places, if possible. (If an answer is undefined, enter UNDEFINED.) ln y = log 9

college algebra
Use a calculator to find y to four decimal places, if possible. (If an answer is undefined, enter UNDEFINED.) ln y = −0.35

college Algebra
Use a calculator to find y to four decimal places, if possible. (If an answer is undefined, enter UNDEFINED.) ln y = −0.35

college Algebra
Use a calculator to find y to four decimal places, if possible. (If an answer is undefined, enter UNDEFINED.) ln y = log 9

college Algebra
Thank you, big help!

college Algebra
Use a calculator to help solve the problem. The life expectancy of white females can be estimated by using the function = 78.5(1.001)x, where x is the current age. Find the life expectancy of a white female who is currently 50 years old. Give the answer to the nearest tenth. L...

college algebra
i did that and it is not working. i get 0.0348

college algebra
Use a calculator to help solve the problem. The intensity I of light (in lumens) at a distance x meters below the surface is given by I = I0 k x, where I0 is the intensity at the surface and k depends on the clarity of the water. At one location in the Atlantic ...

College Algebra
thank you Reiny and Bob

College Algebra
Use a calculator to help solve the problem. One isotope of holmium, 162Ho, has a half life of 22 minutes. The half-life of a second isotope, 164Ho, is 37 minutes. Starting with a sample containing equal amounts, find the ratio of the amounts of 162Ho to 164Ho after two hours...

Finance
P5. A thirty U.S. Treasury bond has a 4.0 percent interest rate. In contrast, a ten-year Treasury bond has an interest rate of 2.5 percent. A maturity risk premium is estimated to be .2 percentage points for the longer maturity bond. Investors expect inflation to average 1.5 ...

Statistics Math
with the reliability coefficent of 0.81 using the classical theory we would interpret that the

College Algebra
I think the question is asking what she would pay at the end of the year. I tried \$159.93 and it was not correct.

College Algebra
A bank credit card charges interest at the rate of 23% per year, compounded monthly. If a senior in college charges \$1,700 to pay for college expenses, and intends to pay it in one year, what will she have to pay?

math
if a 50ft flag pole cast a 10ft shadow how far is it from the end of the shadow to the top of the pole

college algebra
graph the following: 7x + 6y = 42 (-6x+42)\(7)

college algebra
graph the following: (5/4)x-4 (4x+16)/(5)

college algebra
Thanks, I finally got it.

college algebra
now all I need help on is finding the domain of the f(f) that you just posted.

college algebra
no sir, it asks for f(f).

college algebra
thank you so much steve!! could you help me with this one? Let f(x) = square root (x + 2) and g(x) = x^2 − 2. Determine the domain of the composite function. (Enter your answer using interval notation.) f compose f _____? and Find the composite function. (f compose f)(x...

college algebra
find the domain of (x-2)/(-3x+7)

college algebra
Let f(x) = 1/x − 2 and g(x) = 1/x − 3 . Determine the domain of the composite function. (Enter your answer using interval notation.) g compose f _____? & Find the composite function. (g compose f)(x) = _____?

college algebra
Let f(x) = square root (x + 2) and g(x) = x^2 − 2. Determine the domain of the composite function. (Enter your answer using interval notation.) f compose f ______? & Find the composite function. (f compose f)(x) = _____?

college algebra

college algebra
Let f(x) = x + 2 and g(x) = x2 − 2. Determine the domain of the composite function.

college algebra
Thank you so much.

college algebra
what is the domain of (square root of x) +7?

college algebra
Thank you Steve, that was a big help.

college algebra
the following rational function gives the number of days it would take two construction crews, working together, to frame a house that crew 1 (working alone)could complete in t days and crew 2 (working alone) could complete in t+3 days. f(t)=(t^2+3t)/(2t+3). (a) if crew 1 ...

college algebra
Need help in finding all vertical, horizontal, and slant asymptotes, x- and y-intercepts, and symmetries of f(x)=(x-3)/(x-4)

Chemistry
What is the relationship of the concentration of H3O and of OH

social studies
men from higher social classes in------ cultures tend to have low levels of conformity, more self-direction, and have greater intellectual flexibility than did men from lower social classes A) collectivist B) individualist C) interdependent D) all My choice is C but Im a ...

physics
a 100g mass of cookie dough hits inelastically with a 300g mass of cookie dough and they stick. the 100 g mass was moving to the right at 40 m/s and the 300g mas was moving to the left at 5 m/s. what is the final velocity of the massive cookie dough ball? what fraction of ...

social studies
thank you very much!

social studies
I am guessing this one, because I can't find the answer on my book. Would it be D.

social studies
people in countries with tend to be happier A) high incomes B) low incomes C) more civil liberties D) high incomes and more civil liberties My answer is B.

social studies
daydreaming can be an expression of: A) repression B) denial C) sublimation D) projection My answer is D

social studies
thank you for the eye opener:)

social studies
then the answer is B, because personality its not heritable and def. not C

social studies
all personality variables are: A) highly heritable B) unconscious C) theoretical constructs D) easily assessed with questionnaries My asnwer is D

aed
thank you

aed

aed
determine the potential impact of socioeconomic status on education in the following areas: teacher expectatations, student tracking, equal representation in the curriculum, and financial support for schools

math
a rectangular swimming pool 20 feet long and 10 feet wide,is enclosed by a wooden deck that is 3 feet wide. What is the area of the deck? How much fence is required to enclose the deck?

math
a rectangular swimming pool 20 feet long and 10 feet wide,is enclosed by a wooden deck that is 3 feet wide. What is the area of the deck? How much fence is required to enclose the deck?

Algebra
Express the relationship 20 < C < 30 in terms of F, where F = 9/5C + 32. _____________ < F < _____________

Algebra
the cost of renting a rototiller is \$16.50 for the first hour and \$10.95 for each additional hour. How long can a person have the rototiller if the cost must be less than \$55.00?

algebra
a student write that an=3n+1 is a explicit formula for the sequence 1,4,7,10.explain the error and write the correct explicit formula for the sequence.

college algebra
The county news earns a profit of \$20 per year for each of its 3000 subscribers. Management projects that the profit per subscriber would increase by \$0.01 for each additional subscriber over the current 3,000. How many subscribers are needed to bring a total profit of \$113,100?

college algebra
no, I copied the question just as it is, there is 2 answers, the \$10,000 is the smaller amount he invested, there should also be a larger amount.

college algebra
Scott and Laura have both invested some money. Scott invested \$2500 more than Laura and at a 3% higher interest rate. If Scott received \$900 annual interest and Laura received \$450, how much did Scott invest?

college algebra
a large rectangular movie screen in an IMAX theater has an area of 8624 square feet. Find the dimensions of the screen if it is 10 feet longer than it is wide.

CHEM
joules to melt a 525g ice cube at 0∘C and to warm the liquid

Algebra
Kevin stuffs shrimp in his job as a seafood chef. He can stuff 1200 shrimp in 4 hours. When his sister helps him, they can stuff 1200 shrimp in 3 hours. If kevin gets sick, how long will it take his sister to stuff 600 shrimp?

Algebra
Allison drove home at 68 mph but her brother who left at the same time could only drive at 54 mph. When Allison arived, her brother still had 84 miles to go. How far did Allison drive?

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