Wednesday
January 18, 2017

# Posts by dEE

Total # Posts: 901

Chemistry
How many grams of magnesium oxide could be formed from the reaction of .248g of magnesium metal?
September 14, 2015

Integrated math 1
Consider the sample space S = {1, 2, 3, . . ., 10}. Let A = all odd numbers in S. Let B = all multiples of 3 in S. Compute P(B | A). Enter your answer as a fraction using the "/" and do not include spaces in your answer.
September 8, 2015

medical
Choose the combining form which best completes the following group: PONT/O, CRANI/O, FORAMIN/O, _______. A. COCHLE/O B. ENCEPHAL/O C. SALPING/O D. BLEPHAR/O plz help im lost
September 1, 2015

Design a PowerPoint presentation (6-8 slides) in which you define public health. Provide an overview of Healthy People 2020 and present your perspectives regarding at least one of the leading health concerns posed by Healthy People 2020.
June 9, 2015

geometry
A quadrilateral has vertices A(3, 5), B(2, 0), C(7, 0), and D(8, 5). Which statement about the quadrilateral is true? ABCD is a parallelogram with non-perpendicular adjacent sides. ABCD is a trapezoid with only one pair of parallel sides. ABCD is a rectangle with non-congruent...
June 8, 2015

math
what is a probability of rolling a total of 5 when a pair of number cubes is rolled once
May 25, 2015

subsition method
x + 5y = 126 y = 3x +6
April 29, 2015

english
When an adverb modifies a verb with a helping verb, the adverb should generally be placed
March 31, 2015

BUS math
Bari Jay a gown manufacturer received an order for 600 prom dresses from China. Her cost is \$35 a gown. If her markup based on selling price is 79%, what is the selling price of each gown? Round to the nearest cent.
March 31, 2015

accounting
A company purchased merchandise inventory at a cost of \$8,500 with credit terms 2/10, net 60. If the company borrows \$8,330 to pay for the purchase on the last day of the discount period and pays the loan plus interest in the amount of \$8,466.93 on the last day of the credit ...
March 7, 2015

Chemistry
The dosage of technetium -99m for a lung scan is 20 uci/ kg of body weight. How many millicuries should be given to a 50.kg patient (1 mci=1000uci)
March 2, 2015

Chemistry
How much heat is needed to change 3kg of copper from a solid to a liquid? Heat of fusion = 205,000 J/kg
February 23, 2015

Biology
You have a stock solution with following components: glucose: 44 g/L NaCl: 191 g/L Tris Buffer: 275 g/L You mix 71 mL of the solution with water and bring the resulting solution to a final volume of 750 mL. What is the final concentration of glucose in g/L?
February 10, 2015

Biology
You prepare a solution by dissolving 319 g of glucose and 114 g of NaCl in water and bring the final volume up to 1,088 mL. What is the final concentration of glucose in g/L?
February 10, 2015

Calculus
At 2:00pm a car's speedometer reads 60mph, and at 2:10pm it reads 65mph. Use the Mean Value Theorem to find an acceleration the car must achieve. Answer( in mi/h2):
February 8, 2015

Math
If a and b are positive numbers, find the maximum value of f(x)=x^a(1−x)^b, 0≤x≤1 Your answer may depend on a and b.
February 8, 2015

math
The demand function for the Sicard wristwatch is given by the following function where d(x) (measured in units of a thousand) is the quantity demanded per week and x is the unit price in dollars. d(x) = 50 0.01x2 + 1 (0 ≤ x ≤ 20) (a) Find d'(x). d'(x) = (b...
February 6, 2015

Math
Thanks
February 4, 2015

Math
a-7 is divided by 10 = a-2 divided by 8
February 4, 2015

Math
a-7= a-2 ---- ---- 10 8 a=????
February 4, 2015

College Algebra
Translate the following statement. Into an alegebraic expression use x for your variable the sum of the cube if a number and seven times number
February 3, 2015

Math
An airplane in Australia is flying at a constant altitude of 2 miles and a constant speed of 600 miles per hour on a straight course that will take it directly over a kangaroo on the ground. How fast is the angle of elevation of the kangaroo's line of sight increasing when...
February 1, 2015

Math
preparing to make 4 white tents you discover each one will require 2.5 square yards of silk. If each square yard of silk costs \$4.00, how much will it cost to make all the tents? Do I multiple 2.5 times \$4.00 to get the answer?
January 22, 2015

math
Lee wants to cut this piece of canvas into two rectangles that are 3×2 and 3×5. He wants the sum of the areas of the two small rectangles to be the same as the area of the large rectangle. Can he do this? Explain
January 20, 2015

algebra
Ten years from now Tim will be twice as old as Jane was when mary was nine times as old as tim. Eight years ago, Mary was half as old as Jane will be when jane is one year older than Tim will be at the time when Mary will be five times as old as Tim will be two years from now...
January 17, 2015

math
It's been several years since I have had to do math and I am posed with this ? and don't recall how to find the answers. There is a fixed overhead of \$1 per bolt. They make a run of 10,000 bolts at a total marginal cost of \$70k. They sell them all, and lose \$20k. What ...
December 26, 2014

physics
A 1000 kilogram car rolling on a horizontal surface has speed v= 45 kilometer per hour when it strikes a horizontal coil spring and is brought to rest in a distance of 2.2 meters. What is the spring stiffness constant of the spring?
November 5, 2014

algebra
Christ is building a rectangular where the front and back are 5' each. The perimeter of the dog house needs to be 28'. How long will each side of the dog house be?
October 30, 2014

chemistry
Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 0.481 g of methane is mixed with 2.9 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure ...
October 3, 2014

Chemistry
NEVER MIND
October 1, 2014

Chemistry
A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00 L of 1.55M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 49.9g .Find the mass of Cr3+ in the original solution.
October 1, 2014

physics question solved
What is the rate of deceleration of a 1400-kg SUV that is going 75.0 km/h and then slows to 25.0 km/h in 8.20 s? Figured it out, Don't worry about the mass, just solve for Deceleration. which is deltavelocity/delta time >>Subtract First(75 - 25) = 50 km/hr*(1hr/3600 ...
October 1, 2014

Physics
Figured it out, Don't worry about the mass, just solve for Deceleration. which is deltavelocity/delta time >>Subtract First(75 - 25) = 50 km/hr*(1hr/3600 sec) = 50/3600 = 0.01389 km/s. <<Dont Forget the conversion to sec >>>Then delta velocity/ delta ...
October 1, 2014

Physics
What is the rate of deceleration of a 1400-kg SUV that is going 75.0 km/h and then slows to 25.0 km/h in 8.20 s?
October 1, 2014

pre calculus algebra
What number is less than another if 6X a smaller number is added to five times the larger number the sum is 153 find the two numbers
September 3, 2014

Medical Billing & Coding
A physician performed an aspiration via thoracentesis on a patient in observation status in the hosptial. The patient has advanced lung cancer with malignant pleural effusion. Later the same day, due to continued accumulation of fluid, the patient was returned to the procedure...
July 28, 2014

MAT 116
If a > 0 and b < 0, then which of the following must be true
May 4, 2014

math
an unbiased coin is tossed six times. find the probability of the given event. the coin lands heads more than once.
April 23, 2014

math
a pair of dice is rolled. what is the probabilty of each of the following? a. the sum of the numbers shown uppermost is less than 5. b. at least one six is cast.
April 15, 2014

american national goverment
1. Locke’s use of the term “property” (Points : 1) serves to stress the absolute sanctity of property. serves as a defense against the arbitrary exercise of power and authority. dramatizes his commitment to natural law. means that a sovereign who seizes property...
April 13, 2014

Chemistry
April 10, 2014

Chemistry
Okay thank you so much!
April 10, 2014

Chemistry
A buffer solution is prepared by mixing 50.0 mL of 0.300 M NH3 with 50 mL of 0.300 NH4Cl. The pKb of NH3 is 4.74. NH3 + H2O-> NH4+ +OH- 7.50 mL of 0.125 M HCl is added to the 100 mL of the buffer solution. Calculate the concentration of NH3 and NH4Cl for the buffer solution...
April 10, 2014

Calculus
Using f(x), determine a formula for the Riemann Sum S_n obtained by dividing the interval [0, 4] into n equal sub-intervals and using the right-hand endpoint for each c_k. f(x)= 5x+2 Now compute the limit as n goes to infinity S_n to compute the area under the curve over [0,4].
April 7, 2014

chemistry
a piece of metallic iron (10 moles) was dissolved in concentrated hydrochloric acid. the reaction formed iron (II) chloride and hydrogen gas. how many moles of iron (II) chloride were formed?
March 26, 2014

Math
Suppose that Ramos contributes \$6000/year into a traditional IRA earning interest at the rate of 2%/year compounded annually, every year after 35 until his retirement age at age 65. At the same time, his wife Vanessa deposits \$4900/year into a Roth IRA earning interest at the ...
March 22, 2014

math
Base is found by ________ the portion by the rate
March 1, 2014

physics
Two insulated wires, each 2.70 m long, are taped together to form a two-wire unit that is 2.70 m long. One wire carries a current of 7.00 A; the other carries a smaller current I in the opposite direction. The two wire unit is placed at an angle of 77.0° relative to a ...
February 26, 2014

physics
A proton, traveling with a velocity of 4.9 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 7.4 10-14 N and a direction of due south. What are the magnitude and direction of the magnetic field causing the force?
February 26, 2014

physics
The drawing shows a parallel plate capacitor that is moving with a speed of 30 m/s through a 3.1 T magnetic field. The velocity vector v is perpendicular to the magnetic field. The electric field within the capacitor has a value of 170 N/C, and each plate has an area of 7.5 10...
February 26, 2014

college math
CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2-qt (64-oz) cartons. One carton of pineapple-orange juice requires 8 oz each of pineapple and orange juice concentrates. One carton of ...
February 23, 2014

college math
Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose minimum monthly...
February 23, 2014

college math HELP!!!!!
Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose minimum monthly...
February 22, 2014

college math HELP!!!!!
CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2-qt (64-oz) cartons. One carton of pineapple-orange juice requires 8 oz each of pineapple and orange juice concentrates. One carton of ...
February 22, 2014

college math HELP!!!!!
Sharon has a total of \$190,000 to invest in three types of mutual funds: growth, balanced, and income funds. Growth funds have a rate of return of 12%/year, balanced funds have a rate of return of 10%/year, and income funds have a return of 6%/year. The growth, balanced, and ...
February 22, 2014

College math HELP!!!!!
nevermind, i figured it out. thank you!
February 22, 2014

College math HELP!!!!!
how did you get 0.6?
February 22, 2014

College math HELP!!!!!
A financier plans to invest up to \$450,000 in two projects. Project A yields a return of 10% on the investment, whereas Project B yields a return of 15% on the investment. Because the investment in Project B is riskier than the investment in Project A, the financier has ...
February 22, 2014

MATH HELP!!!!!!!!
i need the 3 numbers for the answer, how do i find that?
February 9, 2014

MATH HELP!!!!!!!!
| 3 2 7 | x1 | | 46 | | -2 1 4 | x2 | = | 12 | | 6 -5 8 | x3 | | 60 | (b). Solve the system using the inverse of the coefficient matrix. (x1, x2, x3) = (________)
February 9, 2014

physics
An electric heater used to boil small amounts of water consists of a 25-Ω coil that is immersed directly in the water. It operates from a 60-V socket. How much time is required for this heater to raise the temperature of 0.50 kg of water from 29° C to the normal ...
January 27, 2014

physics
A tungsten wire has a radius of 0.077 mm and is heated from 20.0 to 1205 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 110 V is applied across the ends of the hot wire, a current of 1.3 A is produced. How long is the wire? ...
January 27, 2014

Convert the following mixed number to an improper fraction: 12 3/4
January 25, 2014

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: ______?
January 20, 2014

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 ...
January 20, 2014

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 ...
January 19, 2014

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 ...
January 19, 2014

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...
January 19, 2014

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...
January 19, 2014

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...
January 19, 2014

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...
January 19, 2014

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 ...
January 19, 2014

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)?
January 8, 2014

english
What part of speech is coursework?
January 1, 2014

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...
December 15, 2013

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...
December 13, 2013

college Algebra
thank you
December 13, 2013

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
December 13, 2013

college Algebra
i have no clue why its not working... i tried: 0,0,0 9,9,9 INCONSISTENT
December 13, 2013

college Algebra
its saying its wrong? :/
December 13, 2013

college Algebra
i think you used the wrong one for the third line... x+z=18 y+z=18 x-z=0
December 13, 2013

college Algebra
December 13, 2013

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
December 13, 2013

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
December 13, 2013

College Algebra
thank you, big help
December 12, 2013

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
December 12, 2013

math
12-4=8 8-4=4 4-4=0
December 5, 2013

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 ...
December 2, 2013

Algebra
Thanks, Steve. I was having a mental block on this one and knew it was easy! I appreciate your help.
November 26, 2013

Algebra
This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
November 26, 2013

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 ...
November 26, 2013

algebra
that's exactly what I got but it keeps saying it is wrong.
November 21, 2013

algebra
find all roots of the polynomial equation. x^5+3x^4-2x^3-14x^2-15x-5=0.
November 21, 2013

algebra
thank you soooo much!!!
November 21, 2013

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 ...
November 21, 2013

algebra
Help me factor x^2 -2x - 4 = 0 and 3x^2 + x + 3 = 0.
November 18, 2013

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}
November 18, 2013

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)
November 18, 2013

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 = _____
November 18, 2013

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