# 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 ...

**Business Math**

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**

Please help

**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

**Business & Economics**

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!

**algebraic expressions 5th grade math**

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

**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

**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

**Reading/English**

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?

**math help please**

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**

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

**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?