Monday
August 31, 2015

Posts by Vicki


Total # Posts: 121

chemistry
How many grams of sucrose are in 1.5kg of a 10.5% (by mass) solution of sucrose?
July 15, 2015

algebra
an investor has $30,000 to invest. if part is invested at 5% and the rest at 9%, how much will be invested at 5% to yield 8% on the total amount? use I=PRT
June 23, 2015

Find the GCF of the monomials
3xy, 6xz, and 9yxz is  ___________________________
June 4, 2015

Math
Are you asking what is addition and subtraction? Addition and Subtraction (French: Tom Whisky ou L'illusioniste toqué) is a 1900 French short silent film directed by Georges Méliès. It was released by Méliès's Star Film Company and is...
June 4, 2015

Electronics, Physics, Math
I did it for the zillionth time and came up with 5.68V... Is that correct?
May 12, 2015

Electronics, Physics, Math
5. A circuit is supplied with 30 VDC and contains three resistors connected in series. The value or R1 is 80Ω, the value of R2 is 1,000Ω , and the value of R3 is 4,200Ω . What is the voltage drop across R2? A. 5.68 V B. 2.14 V C. 4.61 V D. 6.82 V I keep coming ...
May 12, 2015

Electronics, Physics
The answer was 14.615Ω lol, the 830 was for another problem I was having difficulty with! I got both right though, so thank you! I just got mixed up here.
May 12, 2015

Electronics, Physics
Never mind! Answer is 830Ω Thank you!
May 12, 2015

Electronics, Physics
I think I am just dumb. Lol, I came up with 204.7 which is too big and not an option. What am I doing wrong. I know I'm doing something wrong... :(
May 12, 2015

Electronics, Physics
In a circuit, a 10 Ω resistor is connected in series to a parallel group containing a 60 Ω resistor and a 5 Ω resistor. What is the total resistance in this circuit? A formula and explanation would be great!
May 12, 2015

Algebra
x^4-4x^2-45=0
April 22, 2015

Algebra
I'm sorry... (16x)- 8square roots of x = 35
April 22, 2015

Algebra
Solve the following equation. 16x-8square roots of x = 35
April 22, 2015

Algebra
Use the properties of exponents to simplify as much as possible (8a^3b^6)^(1/3)/(16a^8b^-4)^(1/4)
April 18, 2015

Algebra
What is the square root of 49a^4+686a^3+2401a^2 Do NOT assume that a represents a positive number
April 6, 2015

Algebra
(5x^(1/3)+1)(25x^(2/3)-5x^(1/3)+1)
April 6, 2015

Algebra
(t^(1/2)+2)^2
April 6, 2015

Algebra
Thanks and thanks for the help on how to write it out on the computer.
April 1, 2015

Algebra
Simplify the following into a single expression x^3/(x^2-1)^5/8 + 2x(x^2-1)^3/8
April 1, 2015

Algebra
No, that's not it either. The directions say to factor as if it were a trinomial. I'm probably typing the actual problem wrong. I'll try to use words in the problem and see if that helps. 9t with the exponent of 1/1 minus 25
April 1, 2015

Algebra
The computer says that 9t-25 isn't correct. Any thoughts?
April 1, 2015

Algebra
I know most of the answer is (3t+5)(3t-5). What I don't understand is the exponent of 1/1. How would that be factored in the equation?
April 1, 2015

Algebra
hmmm...that's how it's worded. Does this help? (9t^1/1)-25
April 1, 2015

Algebra
Please help
April 1, 2015

Algebra
Factor the following as if it were a trinomial 9t^1/1-25
April 1, 2015

Algebra
Use the properties of exponents to simplify (r^-3s^1/3)^6/(r^7s^3/2)
March 30, 2015

Algebra
Use the properties of exponents to simplify the following as much as possible. Assume all bases are positive. And, yes, the way you wrote it. I forgot the parenthesis on the bottom.
March 30, 2015

Algebra
(r^-3s^1/3)^6/r^7s^3/2
March 30, 2015

Algebra
f(x) = -2x^2 + 5x -1 Find f(x) - f(a)/x-a
March 27, 2015

Algebra
A person riding a Ferris wheel with a diameter of 64 feet travels once around the wheel in 25 seconds. What is the average speed of the rider in miles per hour? (Round your answer to one decimal place.)
March 27, 2015

science
If a kestrel eats a mouse that eats grass, the kestrel is a
January 28, 2015

Probabilitys Math
Hmmm, doesnt give number of players, its a question from the instructor, can anyone figure this out? its a probabilities question, not even sure how to approach it, anyone?
November 16, 2014

Probabilitys Math
Doesnt give it.
November 16, 2014

Probabilitys Math
After the last game of the season a football team goes out for ice cream. Each player orders a triple cup of ice cream with a topping.Each order has 3 diffrent flavors, order doesnt matter.The shop has 7 diffrent flavors and 2 toppings to choose from iss it possible for each ...
November 16, 2014

Science
Cottage roof timber from Ireland. Date: 906 ± 35 years. What is the BP Date?
October 10, 2014

Science
Cottage roof timber from Ireland. Date: 906 ± 35 years. What is the BP Date?
October 8, 2014

Science
Pleistocene mammoth bone from La Brea Tar Pits of Los Angeles, California. Age: 12,200 ± 35 years. What the BP Date?
October 8, 2014

math
43%
October 6, 2014

Chenistry
Be able to calculate the pH of a solution prepared by mixing 50.0mL of 0.200M NaH2PO4 (pKa2=7.20) with 50.0mL of 0.120M NaOH. I did work out a pH of 7.38 but I am not sure if i need to take into account any dilution of the mixing of solutions and do you need to know pKa1 to ...
October 2, 2014

physics
A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?
September 25, 2014

physics
A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?
September 25, 2014

Algebra
In 1999 there were 200,000 registered dogs that were Labrador retrievers and dachshunds. There were 3 times as many Labrador retrievers as dachshunds. Find the number of Labrador retrievers and dachshunds
April 7, 2014

chemistry
Calculate the number of moles in 3.50 x 1021 atoms of silver.
February 10, 2014

English
Can someone help me! The word metaphor comes from the Greek prefix meta-, meaning “across,” and pherein, meaning “to carry.” Which of the following words does not contain the Greek prefix meta-? a. metaphysics b. metamorphosis c. metallic <---- my answer...
May 30, 2013

Chemistry
How many grams of barium nitrate is needed to form a solution with 5.00 mass% Ba (NO3)2 in 400 grams of water.
May 14, 2013

cis106
Explain the differences among LANS, WANS, CANS, and MANS.
May 11, 2013

CHEMISTRY
The solubility of a compound in water is 6.8g/100ml at 0.33g/100ml at 25 degree celsius. Calculate the amount of water required to crystallise 10g of the compound. If the pure compound is collected at 25 degree celsius, what is the maximum possible yield percent?
February 16, 2013

Algebra
Rational Expressions: I'll do my best to type the following correctly: x-5+ 14/x+4 divided by x+3- 2/x+4 Simplify, Step by step Please!
January 30, 2013

algebraic expressions 5th grade math
i want to know how to write the algebraic expression for the word problem,not solvet it,thanks
January 16, 2013

algebraic expressions 5th grade math
larry and martha each planted the same number of carrots seeds in their gardens.After 4 weeks,larry had c carrots and martha had 6 more(write an expression)please help me solve,thank you
January 16, 2013

Algebra CTU
What is the unpaid balance of the business loan of 50,000 with interest rate of 9% compounded monthly for7 years, after the firt year of payments?
December 20, 2012

math
draw a rectangle 3 X 4 with 5/12 shaded
June 18, 2012

Reading/English
i was wondering what grade did you get on this?? I'm taking the same class
April 17, 2012

calculate ratios
Calculate the amount of drug in a ratio solution. How many micrograms are in 1ml of a 1:5000 solution?
March 6, 2012

math help please
Calculate the cost to the pharmacy as AWP less 13%. AWP $84.07 per 100 tablets and dispense 30 tablets
February 28, 2012

Science
An animal cell has all of the following structures except ________
February 27, 2012

more math needed
You have a 70% dextrose solution. How many grams of dextrose are in 400ml?
February 24, 2012

Math help needed
How many capsules , each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 lbs?
February 23, 2012

Math hlp
If a physician prescribed 4gm of aspirin to be taken daily, how many 5 grain tablets should the pt take each day?
February 18, 2012

MATH HELP PLZ
A physician orders 750mg of chloramphenicol to be added to a 100ml bag of NS. If the drup is reconstituted to 1gm/10ml, how many mills will be added to NS?
February 16, 2012

MATH HELP
In what proportion should 95% alcohol be mixed with 30% alcohol to make 70% alcohol?
February 16, 2012

Math HELP!!
How many mls of a syrup containing 85% of sucrose should be mixed with 150ml of a 60%sucrose syrup to make a syrup containing 80% sucrose?
February 9, 2012

pharmacy calculations
f an injectable contains 20% of mannitol, how many mls of the injection should be administered to provide 100gm of mannitol?
February 3, 2012

pharmacy calculations
If 500gm of dextrose are dissolved in 600ml of water, with the final volume being 1000ml, what is the percentage strength of the dextrose in the solution?
February 2, 2012

math
The IV dose of mannitol is 1.5g/kg, administered as a 15% solution. How many mls of the solution should be administered to a 150lb patient?
February 2, 2012

Math
If an injectable contains 20% of mannitol, how many mls of the injection should be administered to provide 100gm of mannitol?
February 2, 2012

math
Prochlorperazine is available in 10ml multiple dose vial. Eash ml contains 5mg. How many 2mg doses can be taken from this vial?
February 2, 2012

math
If an albuterol inhaler contains 20mg of albuterol, how many inhalation doses can be delivered if each dose contains 90mcg?
February 2, 2012

math
If an injectable drug contains 25mcg/0.5ml, how many mls will be required to provide a patient with a dose of 0.25mg?
January 31, 2012

physics
A ball rolls up a ramp and then back down again. The ramp is oriented so that the ball is rolling to the right as it rolls up the ramp. Assume that positive v and a vectors point to the right. Which statement is true about the ball's horizontal acceleration? b. The ball ...
January 19, 2012

physics
A ball rolls up a ramp and then back down again. The ramp is oriented so that the ball is rolling to the right as it rolls up the ramp. Assume that positive v and a vectors point to the right. Which statement is true about the ball's horizontal acceleration?
January 19, 2012

Statistics
There are 200 students in a sample. How many of these students will have scores that fall under the score of 41? Mean is 45, standard dev. is 4.
November 15, 2011

College Statistics
A random sample of greeting cards is a mean value of $2.55 and a standard deviation of $0.44 So construct a 95% confidence interval estimate of the mean value of all cards in the store's inventory. So if the 2500 cards in the inventory then how are the results in assisting...
November 9, 2011

calculus
if F(x)=f(xf(xf(x))), where f(1)=2, f(2)=3, f'(1)=4, f'(2)=5, and f'(3)=6, find F'(1).
October 10, 2011

calculus
if F(x)=f(xf(xf(x))), where f(1)=2, f(2)=3, f'(1)=4, f'(2)=5, and f'(3)=6, find F'(1).
October 9, 2011

calculus
find the derivative of y=cos pix/sinpix+cospix
October 9, 2011

calculus
find the derivative of (x^2+1) 3rd root of x^2+2
October 9, 2011

calculus
find an equation of the tangent line to the curve at y=2x^3+5x, (-1, 3)
September 24, 2011

calculus
f(x)=X^3, f(a+h)-f(a)/h please help im so lost thanks
August 29, 2011

electric power tools
what is the purpose of a diode in a cordless drill or power screwdriver?
June 21, 2011

physics
The density of gold is 19.3 x 10^3 kg/m^3. What buoyant force does a .6 kg gold crown experience when it is immersed in water?
April 8, 2011

PSYCHOLOGY
Provide an example of ow one domain of development impacts the other two
March 11, 2011

Psychology
Describe why it is important to consider each domain in the study of adult development
March 11, 2011

math
Use each of the numbers 1 through 9 once in any order that you want to make and expression 2011
March 8, 2011

physics
if |A|=2, |B| =4, |C| =5, find the vector sum a+b+c in ordered pair notation, also find the angle theta
March 1, 2011

physics
if |A|=2, |B| =4, |C| =5, find the vector sum a+b+c in ordered pair notation, also find the angle theta
March 1, 2011

physics
a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground
February 23, 2011

physics
a .330 kg volleyball is dropped from rest. it takes it 1.30 s to reach the ground. what is the magnitude of its momentum just before it hits the ground
February 22, 2011

physics
a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground?
February 22, 2011

physics
thanks, how did you get the .707 though?
February 12, 2011

physics
a device has a 100g wooden shuttle that is pulled along a square woooden rail by an elastic band. the shuttle is released when the elastic band has 9.0 N tension at a 45 degree angle. what is the magnitude of the initial acceleration of the shuttle?
February 12, 2011

math
how do you find the equation line of these ordered pairs (1/6, -1/3) and (5/6, 5)?
February 11, 2011

please help with physics
a gun tilted upward at 30 degrees fires a bullet with a speed of 215 m/s. what is the bullets velocity parallel to the ground
February 3, 2011

physics help
a gun tilted upward at 30 degrees fires a bullet with a speed of 215 m/s. what is the bullets velocity parallel to the ground
February 2, 2011

physics
a gun tilted upward at 30 degrees fires a bullet with a speed of 215 m/s. what is the bullets velocity parallel to the ground?
February 2, 2011

physics
thanks makes sense now
February 2, 2011

physics
a spider crawls 4.7 m at an angle of 24 degrees north of east. another spider crawls 5.2m at an angle of 24 degrees east of north. what is the eastward displacement of the spiders?
February 2, 2011

Forensic psychology
What are the differences between the forensic treatment evaluation and the clinical treatment evaluation in non-forensic settings?
January 18, 2011

Finance
What is the monthly payment of $200,000 is financed for 15 years at 7.5%?
December 1, 2010

physics
A net force of 295 N accelerates a bike and rider at 2.60 m/s^2. What is the mass of the bike and rider together?
September 21, 2010

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