# Posts by Vicki

Total # Posts: 131

Algebra
The current in a stream moves at a speed of 8mph. A boat travels 13 mph up stream and 13 mph downstream with a total time of 3 hrs. What is the speed of the boat is still water?

Algebra
The temperature fell by 9°F today right a sign number to represent this temperature change

Life Orientation
Mamelodi

Language Arts
*good

Language Arts
The City Is So Big by Richard Garcia The city is so big Its bridges quake with fear I know, I have seen at night The lights sliding from house to house And trains pass with windows shining Like a smile full of teeth I have seen machines eating houses And stairways walk all by ...

Math
A truck is carrying pear juice, cherry juice, and apple juice bottles in a ratio of 3:1:3, If there are 16 cherry juice bottles how many juice bottles in all? Pear juice #? Cherry juice 16 Apple juice #? 3:1, 1:3 3pears to 1cherry; 1apple to 3cherry There are total of 79 ...

11.3

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

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

Find the GCF of the monomials
3xy, 6xz, and 9yxz is  ___________________________

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...

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

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 ...

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.

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

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... :(

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!

Algebra
x^4-4x^2-45=0

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

Algebra
Solve the following equation. 16x-8square roots of x = 35

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

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

Algebra
(5x^(1/3)+1)(25x^(2/3)-5x^(1/3)+1)

Algebra
(t^(1/2)+2)^2

Algebra
Thanks and thanks for the help on how to write it out on the computer.

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

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

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

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?

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

Algebra

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

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

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.

Algebra
(r^-3s^1/3)^6/r^7s^3/2

Algebra
f(x) = -2x^2 + 5x -1 Find f(x) - f(a)/x-a

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.)

math
the the x is 0 then it should always be on the y- axis

science
If a kestrel eats a mouse that eats grass, the kestrel is a

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?

Probabilitys Math
Doesnt give it.

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 ...

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

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

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

math
43%

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 ...

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?

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?

Geometry
10.5

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

12,240

chemistry
Calculate the number of moles in 3.50 x 1021 atoms of silver.

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...

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.

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

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?

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!

i want to know how to write the algebraic expression for the word problem,not solvet it,thanks

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

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?

math
draw a rectangle 3 X 4 with 5/12 shaded

i was wondering what grade did you get on this?? I'm taking the same class

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

Calculate the cost to the pharmacy as AWP less 13%. AWP \$84.07 per 100 tablets and dispense 30 tablets

Science
An animal cell has all of the following structures except ________

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

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?

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

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?

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

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?

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

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?

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?

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

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

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

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?

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 ...

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?

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.

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...

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).

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).

calculus
find the derivative of y=cos pix/sinpix+cospix

calculus
find the derivative of (x^2+1) 3rd root of x^2+2

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

calculus

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

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?

PSYCHOLOGY
Provide an example of ow one domain of development impacts the other two

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

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

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

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

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

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?

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

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