# Posts by karen

Total # Posts: 1,074

Ap Chemistry
An ore contains Fe3O4 and no other iron. The iron in a 60.67 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 36.1 grams. What was the percent Fe3O4 in the sample of ore? Answer in units of %

lang arts
I got 1. D 2. A 3. c 4. B 5. A please help me do I have them right?

geometric sequences
I can not find the missing term 81 54 _ _ _ not seeing the missing terms.

pharmacy tech.
a pharmacist has a 40% acid solution and has a 25% acid solution. How many liters must be mixed to form 54 liters of a 27 % acid solution?

Math
a pharmacist has a 40% acid solution and has a 25% acid solution. How many liters must be mixed to form 54 liters of a 27 % acid solution?

Chemistry
How many grams of SO3 are needed to make 250 ml of 0.750 molar solution?

chem
How many grams of SO2 are needed to make 250 ml of 0.750 molar solution?

Physics
A car traveling 80km/h is 120m behind a truck traveling 66km/h. How long will it take the car to reach the truck?

Physics
A car traveling 80 is 120 behind a truck traveling 66 . How long will it take the car to reach the truck?

English
What is the plural of scientist?

Math
How do u solve 15/y=3. I know the answer is 5 but how do u get there by showing your work?

art
what visual elements are used in Rembrandt's painting "the storm of the sea on galilee?

Corporate Finance
Finding the Capital Structure Fama's Llamas has a weighted average cost of capital of 9.8 percent. The company's cost of equity is 15 percent, and its cost of debt is 7.5 percent. Tha tax rate is 35 percent. What is Fama's debt-equity ratio?

Math
What do the brackets mean in this problem? a[(b-c)/d]-f Am I suppose to times the answer of everything in the parenthesis by a?

Algebra 1
never mind -worked it out!!

math
thank you for your help! can you check if it's correct? 1.) 1/9 2.) 4/2= 1/5

math
please help! 1.) A random digit from 1 to 9 (inclusive) is chosen, with all digits being equally likely. The probability that when it's squared it will end with the digit 1. 2.) A random number between 1 and 20 (inclusive) is chosen. The probability that its square root ...

probability
please help! 1.) A random digit from 1 to 9 (inclusive) is chosen, with all digits being equally likely. The probability that when it's squared it will end with the digit 1. 2.) A random number between 1 and 20 (inclusive) is chosen. The probability that its square root ...

algebra
thank you so much!

algebra
please help! The following equation can be used to predict the average height of boys anywhere between birth and 15 years old: y = 2.79x +25.64 where x is the age (in years) and y is the height (in inches). a. What does the slope represent in this problem? Interpret it in ...

math
how do i change 0.26(2/3) to a fraction

wrong subject (algebra)
not statistics..

statistics (math)
The following equation can be used to predict the average height of boys anywhere between birth and 15 years old: y = 2.79x +25.64 where x is the age (in years) and y is the height (in inches). a. What does the slope represent in this problem? Interpret it in context. b. What ...

math
When using a 1% cream and a 6% cream to produce a 4% cream, how many parts of each initial ingredient will be needed?

human resources
1. An example of internally aligning HR practices is: a. implementing an employee dress code that increases customer satisfaction. b. creating a recruitment plan that targets the predominate groups in the organizations labor market. c. implementing a training program which ...

geometry
Quadrilateral ABCD is similar to quadrilateral WXYZ. Side BC is 8.6 units in length, side AD is 23.1 units, and side WZ measures 15.8 units. What is the measure of side XY?

geometry
In triangle ABC, DE is parallel to AC. Side AD measures 5.3 units, side DB measures 8.0 units, and DE measures 4.8 units. What is the measure of AC?

functions
F(x) x^4-11x^3+34x^2-6x-52 Write f(x)as the prouduct of two linear binomials and a quadratic trinomial

Ms. Sue help!!!
could you tell me information of Heron's Formula?

American Government
Congress' inability to consistently provide leadership on broad national issues is due to: A. the lack of talented leadership in Congress. B. constitutional restrictions on Congress' lawmaking powers. C. the constant threat of a presidential veto. D. the fragmented ...

Accounting
Susan Kline works for Trend Press, a fairly large book publishing firm. Her best friend and rival, Lisa, works for Silver Books, a smaller publisher. Both companies issue \$100,000 in bonds on July 1. Trend's bonds were issued at a discount, while Silver's were issued ...

math
the probability of an event is 7/12. what are the odds against this event occurring?

chemistry
a balloon is filled to a volume of 7.00 x 10 to the second mL at a temperature of 20.0 degrees celcius. the balloon is then cooled at a constant pressure to a temperature of 100 k. what is the final volume of the balloon?

Math
3/n + 3/10 =

algebra
a tree 5 ft tall growns an average of 8 in each year, write an ewquation to model the trees height h inches after y years

English
Where do commas belong in the following sentences? With Barton's help readers the American Red Cross Society was formed in 1881. Yes she treated wounded German and Allied soldiers alike.

child development
proficiency barrier

statistics
% of the community favored having a pool in the new park. If citizens are chosen, find the probability that exactly of them favor the pool.

dressmakeing exam 04202100
the most appropriate fabric for a pregnant women's only coat would be (a) black and ehite plaid (b) solid navy blue (c red and gray stripes (d) multicolored floral, when a dainty slip has along the top edge, the shoulder straps should be attached by (a) machine stitching ...

Physics
A piece of glass is immersed in water . If a light ray enters the glass from the water with an angle of incidence greater than zero, in which direction is the ray bent?

english
I need a title for an essay I am writing on Oliver sacks. Any suggestions?

chemistry
everything

chemistry
how much gasoline in gallon is used in one year. how much gasoline in grams is used in one year. how much CO2 in grams in grams is produced in a single year?how many pounds of CO2 are produced

chemistry
according to american insurance companies a driver will travel 12,000miles in a single year.gasoline may be taken as primarily C8H18,octane, and the reaction with dioxygen is given below.the driver's vehicle gets 25.0miles per gallon.the density of octane is 0.703g/ml. ...

maths
If a van travels for a distance of 18 km at an average speed of 75 km/h and then for a distance of 63 km at an average speed of 90 km/h, what is the total time for the journey in minutes, to the nearest minute?

Math
The first lap of an auto race is 2000 meters. This 5% of the total race distance. What is the total distance?

math 11
oh sry i forgot to ask these questions.. to help you answer this one its a long one 1.calculate the final value after 10 years if you invest 5000.0 at 2.5% compounded annualy 2.Calculate the amount of interest earned in 10 years on 1000.00 invested at 3.00% per annum, ...

math 11
An investment earning simple interest rate of 1.10% per annum for a term of 5 years earned 82.50 in interest. What was the principal?

Philosophy
Why did Hobbes name his text Leviathan?

Math
How many faces vertices and edges does a cone have

math
Two representatives are chosen at random from a group of 100 students that has 50 girls and 50 boys. What is the probability that the representatives seledted are either both boys or both girls?

math
In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects.

math
The odds against pats winning the election are 6:7 with these odds, what is the probablity that pat will win the election.

math
In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that none of those patients had side effects.

math
the probability of an event is 7/10. Find the odds in favor of this event occurring.

math
The odds against Pat winning the election are 5:9. With these odds, what is the probability that Pat will win the election?

not a cube, as they have not done cube roots yet. I know the answer, which would be 4x4x5, but looking for a pattern or easy way to explain it.

If the volume of a rectangular solid is 80 cu inches, what dimensions will give the least amount of surface area?

chem
calculate the standard enthalpy change for each of the following reactions. N2O4(g)+4H2(g)=N2(g)+4H2O(g)

principles of physics
the same and your tangential speed less.

Calculus AP
implicit differentiation Find the slope of the tangent line to the curve xy^3 + 2y - 0.76 =0 at the point (-3, o.7) I'm lost. so 3xy^2 * y' + 2y = 0 right?

chemistry
189g

chemistry
3.30 mL of vinegar needs 43.0 mL of 0.150 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.70 qt sample of this vinegar?

chemistry
A What mass of KCl is needed to precipitate the silver ions from 26.0 mL of 0.100 M AgNO3 solution?

math
If a dice is rolled 3 times, what is the probability of rolling a prime number, then a 2, and then a 5?

English
Do you capitalize mom in the phrase your mom?

English
As in the Temperature

In Dante's inferno, why does Dante have to get rid of his feelings of sympathy and pity toward sin and sinners in order to grow?

Macroeconomic
Suppose we establish a \$10,000 fine for water pollution. Would some companies still find that pollution was economical? Under what conditions?

math
There are nine customers waiting for their local SuperDuperMegaMart store to open on a big shopping day. In how many ways can the nine customers form a single line at the door? That is, how many different lines of nine people are possible?

Economics
Suppose George is making \$18 an hour installing electronic chips in hand held computers. Would you offer to work for \$8 an hour to get you the job? Why might a profit-maximizing employer turn down you offer?

Chemistry
37% HCl is 0.37g/g to prepare 100mL of 10g/L HCl solution you need 1g of HCl then the volume of 37% HCl is 1g/(0.37g/g x 1.19g/mL)=2.27mL

Math
Jose said all of the multiples of 8 are also multiples of 2. Jamila said that all of the multiples of 8 are also multiples of 4. Who is correct? Explain.

Psych-Cognition
What does the concept dualist metaphysics mean?

College Hca 210
Write a 350- to 700-word paper on one of the following laws: HIPAA (1996) or EMTALA (1986). Pretend you are a health care manager employed at a small community hospital responsible for educating your staff about HIPAA (1996) or EMTALA (1986). Include the following in your ...

Math- Alg 2
A colony of bacteria is growing exponentially according to the function below, where T is in hours. How many bacteria are there after 7 hours? B(T)= 4*e^(0.8)T

math
For 3 collections, the mode was 126 and the range is 26. What are the 2 possibilities for the number of items in each collection?

A&P
together leucocytes and platelets compromise ? percent of total blood volume

College: HCA 210
Complete the following Workforce Provider Overview Grid. Many areas within health care are options for career placement or advancement. Research different fields within the industry and fill in each box with detailed information about the clinical health care provider. For ...

Geometric Sequence
81 54

economics
When an economist says that a currency has become stronger, he or she means that a) it will buy less of foreign goods. b)it can be exchanged for more of a foreign currency. c)services, unlike goods, can be exported freely. d)there are very few things that the currency cannot ...

science
2 questions. What part of the cell contains chlorophyll? what do plants usually have one large one of and animals may not have any or have several smaller ones?

phi 103
avoid the argument

Soc 331
Discuss current trends affecting social welfare. Do modern trends favor the solution of social issues? What are the most effective social welfare organizations today in your opinion, and why? I think that modern trends do favor solution, but I'm not exactly sure how. i ...

chemistry
for the reaction S2F6 (g) 2SF2(g), the equilibrium concentrations are as follows: [S26]=0.000430M, [SF2]=2.08 M, [F2]=1.32M. the equilibrium constant is

statistics
a student took a 25 question true and false test answering the question randomly without reading them. If a score of 18 is correct is the minimum passing grade, how likely (calculate probability) is it that the random guesser will pass the test

there are 24 student in a science class mr sato will give each pair 9f students 3magnets so far mr sato has given 9 pairs of student their 3magnets how many more magnets does mr sato need so that each pair of students has exactly 3magnets

chem 1
a NaOh solution has a concentration of about 0.11M.How many grams of KHP would have to be used to require NaOH solution to reach the endpoint

Math
Reasoning Janice said that if you cut a cube into two parts you form 2 smaller cubes. Ling said that 2 rectangular prisms are formed. Who is correct? Explain.

English
Yes, my examples for my sentences are in my answer to your previous question above.

English
Redundant is when two different words are used in a sentence but mean the same thing. ( I cannot think of a sentence for this one.) A parenthetical is an an add-on to a sentence but does not necessarily interrupt it. Is this a good example? California, to say the least, is a ...

English
Three sentences involving: 1. A completely correct simple sentence with an appositive in it about California. 2. A sentence with redundant language about California. 3. A sentence about California with a parenthetical element in it.

English
Using California as a topic, number and write one example of each of the following: 1. A completely correct simple sentence (see Grammar Glossary if you need to) with an appositive in it. 2. A sentence with redundant language. Type the redundant language in ALL-CAPS. 3. A ...

math
If you walk 6.2 miles in 2 hours- what is your average speed in meters per minutes? I just want to make sure that I am setting this up right... thank you.

chemistry
Oh I am sorry, the distance between mars and earth is measured in kilometers.

chemistry
how long would it take a radio wave with a frequency of 7.25 x 10to the 5th to travel from Mars to earth if the distance is approx. 8.0 x 10 to the 7th?

Economics
assume that gross national debt is equal to \$3million and the federal government then runs a deficit of \$300 billion. What is the new level of gross national debt

physics
A centrifuge is revolving at the rate 10,000rpm. The radius of revolution for a 0.100-g particle being separated is 8.00 cm. a) Identify the given quantities with their symbols and units. b) What is the angular speed in radians per second? c) What is the linear speed in meters...

english
a common fary tale motif found in the white snake is: a)references to the bible b)items or events occurring in threes c)references to real people or events d)the dialect of the charactwers

algebra 1
n-12 =11 n-12+12=11+12 n=23

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