Questions Asked on
March 28, 2013

Chemistry
1. Which of the following metals is oxidized by calcium ions? *potassium zinc iron lead 2. The first electrochemical cell was invented by ____. Michael Faraday *Alessandro Volta James Maxwell Benjamin Franklin 3. Why can't a lead storage battery be
asked by Jack 
Trigonometry question?
Let ABCD be a square, and let M and N be the midpoints of BC and CD respectively. Find sin
asked by Knights 
Math Plz help
survey about the student government program at a school finds that of 245 students: 218 students like the program 27 students think the program is unnecessary If a circle graph were made from this data, what would the measure of the central angle be for
asked by Jack 'N Jill 
Statistics
Hello. I would like to ask a college statistics question. Q. One hundred draws are made at random with replacement from the box [1,2,2,5]. The draws come out as follows:17 [1]'s, 54 [2]'s, 29 [5]'s. Fill in the blanks, using the options below; show work.
asked by Daniel 
Public Speaking
For communication to take place, there has to be: A. transmission of the message. B. medium. C. sharing of meaning. D. absence of noise. is it A 2. Which is NOT a benefit of studying public speaking? A. Creates good first impression on others B.
asked by Amy 
standardized Testing
Is it possbile to score in the 100th percentile on a given standardized test?I would think no but why not?
asked by Tameika 
Spanish
5. Fill in the blank with the correct form of the verb jugar. yo __________ My Answer: yo juego 6. Fill in the blank with the correct form of the verb jugar. nosotros __________ My Answer: nosotros jugamos 7. Fill in the blank with the correct form of the
asked by Jack 
AP Macroeconomics
Japan, the European Union, Canada, and Mexico have flexible exchange rates. Suppose Japan attracts an increased amount of investment from the European Union. Using a correctly labeled graph of the loanable funds market in Japan, show the effect of the
asked by Macroeconomics 
chem
In an excess of NH3(aq), Cu2+ ion forms a deep blue complex ion, Cu(NH3)42+, which has a formation constant Kf = 5.6 1011. Calculate the Cu2+ concentration in a solution prepared by adding 4.8 103 mol of CuSO4 to 0.500 L of 0.32 M NH3.
asked by hannah 
physics
At most, how many bright fringes can be formed on either side of the central bright fringe when light of wavelength 656 nm falls on a double slit whose slit separation is 3.45 × 106 m?
asked by please help 
Math
a park is 3/4 mile long and 1/2mile wide. Which fraction represents the ratio of the parks length to its width? I did it by 3/4 divided by 1/2 this equals 1 1/2 or 3/2 Is this correct?
asked by Ellie 
Maths
How many integers satisfy the inequality ∣10(x+1)/(x^2+2x+3)∣≥1?
asked by Ian 
Math
the sum of 5 consecutive whole numbers is 2005. what is the sum of all the digits of these 5 numbers
asked by Mo 
chemistry
The triprotic acid H3A has ionization constants of Ka1 = 9.9× 10–2, Ka2 = 2.7× 10–8, and Ka3 = 5.9× 10–11. a). Calculate the following values for a 0.0570 M solution of NaH2A H+ ?? [H2A^/H3A]?? b). Calculate the following values for a 0.0570 M
asked by Laura 
Chemistry
How do you distinguish between fluorene and acetanilide? Suggest methods other than melting point and chromatography.
asked by Albert 
Public speaking
Public speaking has been formally studied since: A. the 5th century. B. the 20th century. C. recently. D. communication courses were offered at universities. is it B 2. Early study of public speaking was known as: A. public communication. B. rhetoric. C.
asked by Amy 
Public speaking
In a world of ____________, communication skills help us to interact with people whose backgrounds are different from our own. A. careers B. changes C. technology D. personal relationships A is the only option tat makes sense to me but i'm not sure if its
asked by Amy 
chemistry
Phosphoric acid is a triprotic acid with the following pKa values: pKa1=2.148 pKa2=7.198 pKa3=12.375 You wish to prepare 1.000 L of a 0.0200 M phosphate buffer at pH 7.11. To do this, you choose to use mix the two salt forms involved in the second
asked by Laura 
Statisitics
In a large section of a Chemistry class, the points for the final exam are normally distributed, with a mean of 72, and a variance of 81. Grades are to be assigned according to the following rule: the top 10% receive As, the next 20% receive Bs, the middle
asked by Hulio 
Simple Calculus
Evaluate \displaystyle \lim_{x \to 0} \frac{\sqrt{2}x}{\sqrt{2+x}\sqrt{2}}.
asked by Lucy 
govenment
The government set up by the Articles of Confederation had a. no legislative or judicial branch. b. only a legislative and an executive branch. c. only a legislative branch, consisting of a unicameral Congress. d. only a legislative branch, consisting of a
asked by lucy 
math
The Thompson Company uses standard costing and has established the following direct material and direct labor standards for each unit of Lept. Direct materials: 2 gallons at $4 per gallon Direct labor: 0.5 hours at $8 per hour During September, the company
asked by lisa 
Algebra
Suppose you buy flour and cornmeal in bulk to make flour tortillas and corn tortillas flour costs 1.50lb cornmeal costs 2.50lb you want to spend less than 9.50 on flour and cornmeal and you need at least 4lb altogether a) write a system of inequalities
asked by Jared Heninger 
statistics
The standard deviation of the diameter of 18 baseballs was 0.29cm. Find the 95% confidence interval of the true standard deviation of the diameters of the baseballs. Do you think the manufacturing process should be checked for inconsistency?
asked by ann 
Finite Math
The reading list for a literature class has 6 fiction and 8 nonfiction books. A student is to write a report on 5 books from the list during the semester. The report must include at least 1 and at most 4 reports of fiction books. In how many ways can the
asked by Ira 
Algebra
An air plane can travel 560 miles per hour with the wind and 480 miles per hour against the wind. Determine the speed of the plane in still air and the speed of the wind.
asked by Lora 
chemistry
Phosphoric acid is a triprotic acid with the following pKa values: pKa1=2.148 pKa2=7.198 pKa3=12.375 You wish to prepare 1.000 L of a 0.0200 M phosphate buffer at pH 7.11. To do this, you choose to use mix the two salt forms involved in the second
asked by jane 
Management
The bulbs manufactured by a company gave a mean life of 3000 hours with standard deviation of 400 hours. If a bulb is selected at random, what is the probability it will have a mean life less than 2000 hours? Question: 1) Calculate the probability. 2) In
asked by Rajan 
7th Grade Science
1. A person's belief that he or she needs a drug to feel good or function normally (1 point) addiction psychological dependence emphysema tolerance 2. A large, domeshaped muscle below the lungs (1 point) trachea alveoli diaphragm emphysema 3. Smoke that
asked by Anonymous 
math
A supply company sells packs of paper by the box. Each box contains the same number of packs of paper, P. Which equation could be used to find the total number of packs of paper, T, that would be in B boxes ordered?
asked by Anonymous 
math
The population mean length of a hospital stay for surgery is 5.5 days and the standard deviation is 1.9 days. What percentage of patients are hospitalized for 3.9 days or less? I've read the book and looked at the explanation that it gives and it's not
asked by tmouery 
Advanced Algebra
Write the equation for the depreciation of the value of your car for t years at 14% per year.
asked by Derek 
algebra 10th grade
Solve for x? 0 = 9/5 x 9
asked by mary 
calculus
determine the point of intersection of the tangents at the points of inflection to the curve f(x)= x^4 – 24x^2 – 2
asked by samantha 
5th grade math
how do i convert milligrams to grams i am in fifth gradeeasiest way please.
asked by cc 
physics
Consider a concave mirror with radius R. An upright object is placed in between the interval R/2 and R. R
asked by Anonymous 
Math
Let log 2 = a, log 3 = b and log 7 = c. Express the indicated logarithm in terms of a, b, and c. 1log3 5 (3 is the subscript of the log) ans:(1a)/b, i need someone to show me the step bcus my ans is different from the given ans. my ans=(1/a)b.
asked by ifi 
physics
if a cyclist takes one minute to comple half revolution on a circular path 120 m radius.what is the average velocity?
asked by khadija 
Math
if 4/3 x 3/4 =5k whats k
asked by Jordan 
Algebra help!
1.) Solve the system by triangularizing the augmented matrix and using back substitution. xy+z=1 xy4z=7 4x+y+z=6 2.) Perform the indicated row operation, then write the new matrix. 4 4  4 9 6  5 2R1+ R2 > R2 3.) Solve the system by
asked by Becca 
math
a lab assistant wants to make 5 liters of 27.8% acid solutions. if solutions of 50% and 13% are in stock, how many liters of each must be mixed to prepare the solution?
asked by Anonymous 
govenment
Virginia ratified the constitution with the help of all of the following men EXCEPT: a. Washington c. Henry b. Jefferson d. Madison
asked by lucy 
public speaking
public speaking has been formally studied since
asked by Anonymous 
chemistry
Pure water has a density of 1.00 g/ml at 297 . Calculate the molar concentration of pure water at this temperature. Would i just convert grams to moles, and ml to liters?
asked by K 
Math
the larger of the two numbers is 8 more than twice the smaller. The sum of the numbers is 10 less than three time the larger. Find the numbers
asked by Ross 
math
The total weekly cost (in dollars) incurred by Lincoln Records in pressing x compact discs is given by the following function. C(x) = 2000 + 2x  0.0001x2 (0x 6000) (a) What is the actual cost incurred in producing the 1041st and the 2141st disc? (Round
asked by Kaleia 
Algebra
Two cars start at the same point at Alexandria, verginia, and travel 2 opposite directions. One car travels 5 miles per hour faster than the other car. After 4 hours, the two cars are 420 miles apart. Find the speed of each car.
asked by Lora 
English
Red Scarf Girl  I need a 34 sentence summary, central idea, and a quote from the book that would support the central idea.
asked by Victoria 
fuuast
young, innovative, or hightech firms often adopt the strategy of ignoring history or attempting to do something radically new.in what ways will this strategy help them? in what ways this strategy hinder them?
asked by sajjad 
physics
A 62.0 skier is moving at 6.10 on a frictionless, horizontal snowcovered plateau when she encounters a rough patch 3.30 long. The coefficient of kinetic friction between this patch and her skis is 0.330. After crossing the rough patch and returning to
asked by mira 
pre calculus
Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^212x4x+36=0 How on earth do I do this?
asked by sharon 
physics
A girl on a merrygoround platform holds a pendulum in her hand. The pendulum is 3.7 m from the rotation axis of the platform. The rotational speed of the platform is 0.025 rev/s. It is found that the pendulum hangs at an angle è to the vertical. Find
asked by Michael 
government?
Which feature did the State constitutions and the Articles of Confederation have in common? a. royal governors b. bill of rights c. principle of popular sovereignty d. a strong executive elected by popular vote
asked by lucy smith 
Estimation and Computation
The ratio of boys to girls in a class is 2:3. If a student is chosen at random to be on the student council, what is the probability it will be a girl?
asked by Taylor 
Social Studies
PLEASE EXPLAIN IN YOUR OWN WORDS PLEASE PLEASE HELP IN YOUR OWN WORDS PLEASE. :( :( 1) Explain the similarities and differences between corporate farms and mixedcrop farms. 2) Identify two problems resulting from urban sprawl in the western region of the
asked by Jane 
Statistics
A hospital claims that the mean waiting time at its emergency room is 25 minutes. A random sample of 16 patients produced a mean wait time of 27.5 minutes with a standard deviation of 4.8 minutes. Use the 1% level of significance to test is the wait time
asked by Steven 
physics
body floats 1/3 of volume outside the water and 3/4 of its volume outside another liquid.what is the density of ether liquid?
asked by Anonymous 
algebra 1
write an algebraic expression that could be used to represent the perimeter of the triangle below. write the expression in simplest form. triangle 3x+1 3x 2x+4 A: 6x+2 B: 5x8 C: 4x+8 D: 6x2
asked by Anonymous 
Grammar (Ms. Sue)
I apologize for asking the same question, but I misunderstood the directions. The following sentences are written in the present tense. Rewrite each sentence in each of the other five tenses. 1). I collect. 2). You split. 3). They teach. 4). We give. 5).
asked by Anonymous 
physics
A horizontal spring with k = 45 N/m is attaches a 1.0kg block to a spring hung from the ceiling. A block is pulled down to a spot that is 30.0cm from the spring's rest position. What is it's new acceleration?
asked by R 
math
Find the average cost function C associated with the following total cost function C. C(x) = 0.000007x3  0.06x2 + 110x + 76000 C(x) = ?? (a) What is the marginal average cost function C' ? C'(x) = ?? (b) Compute the following values. (Round your answers
asked by Kaleia 
physics
What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when (B) both ends are open. The speed of sound through the air inside the organ pipe is 343m/s. (Hint: if a harmonic does not exist,
asked by Help 
Trig
Use a halfangle identity to find the exact value for sec(x/2) if sinx = 12/13 ; 3pi/2 < x < 2pi
asked by Anna 
algebra
The following polynomial is prime. 2q² + 9q + 1
asked by anna 
govenment
When crafting the new Constitution, the Framers drew from their experiences with which of the following? a. the governments of ancient Greece and Rome b. the writings of Rousseau and Locke c. their own State governments d. all of the above
asked by lucy 
Algebra
Graph the function. Compare the graph with the graph y= x² 1. y=x²+5
asked by Daniella 
math
The ocean covers about 71% of the Earth’s surface. If the total surface area of the Earth is about 510 million square kilometers, how many square kilometers are covered by the ocean?
asked by Anonymous 
queen of peace academy
If 1g of sodium24 has decayed from a sample that was orinally 2g. How old is the sample?
asked by michael 
social studies
did Millard Fillmore want woman rights ?
asked by Boobear 
Trig
Simplify (sin^2)*(67.5deg)  (cos^2)*(67.5deg) and then evaluate exactly.
asked by Max 
physics
A bridge is supported at both ends (500m between supports). A Car (250 Kg) is at 100m from the left support. A truck (4000 Kg) is at 200m from the left support. Find the forces on the supports
asked by Mark 
Statistics
Weights of male mountain lions follow the normal distribution with a median of 150 lb and an interquartile range of 8.2 lb. Find the 75th percentile of the weights. Find the 95th percentile of the weights.
asked by Andrea 
statistics
confidence intervals: A researcher is interested in estimating the average salary of teachers in a large school district. She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to be
asked by ann 
Use the remainder theorem
Use the remainder theorem to find the remainder when f(x) is divided by x+2 whether x+2 is a factor of f(x) f(x)=2x^68x^4+x^25 Remainder is=
asked by Alley 
Chemistry
Titration of 0.6500g of an acid requires 182.42 mL of 6.020x10^3 N NaOH to reach the endpoint. What is the mass of an equivalent of this acid?
asked by John 
ECONOMICS
Singer Taylor Swift has a monopoly over a scarce resource: herself. She is the only person who can produce a Taylor Swift concert. Does this fact imply that the government should regulate the prices of her concerts? Why or why not?
asked by RAJA 
Geometry
A right triangular prism has volume equal to 288 cm^3 . The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine the length of the hypotenuse (in cm) of the triangular face.
asked by John Corner 
Geometry
A right triangular prism has volume equal to 288 cm^3 . The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine the length of the hypotenuse (in cm) of the triangular face.
asked by John Corner 
vocab
Industry antonym??
asked by yuki 
Geometry
Find the surface area of a cylinder whereas diameter is 9 ft and height is 24 ft
asked by Bria 
Science
Explain why .100 m NaCl in water does not have a freezing point equal to a) 0.183 degrees Celsius b) 0.366 degrees Celsius
asked by Swagdeep 
Math
47 Fahrenheit = Celsius give answer in decimal form, to the nearest tenth?
asked by Alice 
Chemistry
I was just wondering how I would determine the pKb of a weak base that was titrated with a strong acid on a titration curve at the EQUIVALENCE POINT. And from this, how would I find the pH? PLEASE HELP!!
asked by TC 
math
the diamond taxi company charges an initial fee of $3.00 plus $2.00 per mile for each ride. a) using the table show the cost (C) of taking a taxi 05 miles number of miles cost(c) 1 ? 2 ? 3 ? 4 ? 5 ? can you show me to do the number of miles for 1 and then
asked by Anonymous 
Algebra
A theater company's annual profit is modeled by the equation P= 0.2x^26.8x, where x is the number of plays performed in a year. How many plays must the company present in order to make a profit?
asked by Justin 
Algebra help needed please!!
I have a few questions I need help with! 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the solution in terms of a parameter. 3x+yz=4 6x2y+2z=8 12x+4y4z=16 2. Solve
asked by Kris 
english
Special education services for young children are with disabilities a. cannot be enforced through laws b. depend on parent efforts c. do not involve the head Start program d. are rooted in federal legislation My answer is d.
asked by Emily 
Statistics
DM Co. sells computer parts by mail. The company claims that at least 90% of all orders are delivered on time. A sample of 150 orders showed that 129 were mailed on time. Is the company’s claim true? Test using the 2.5% level of significance. Use the 5
asked by Steven 
chemistry
What mass of KNO3 (MW=101) is needed to prepare 45omL of 0.250 M KNO3 in water?
asked by Kishwa 
Algebra 2 ..
Please explain on how to do each of these! *Let (x) be defined for all positive integer values of xas the product of all even factors of 4x. For example, (3)=12x6x4x2=576. What is the value of (5)? Someone says that it is f(5)= 20x10x2x4=1600 I DO NOT GET
asked by Anonymous 
science
can you describe the process of cellular respiration.include the words:sugar,energy,carbon dioxide,and water
asked by amanda 
psychology
Janet has been attending Killian High School for three years. At the beginning of her senior year, she is enrolled in Ms. Brosham's AP English Class. She heard from her two older siblings that Ms. Brosham was a hardnosed, crusty teacher who did not
asked by kala Noja 
E
Which is the best way to learn new material? A. Use techniques that appeal only to your preferred learning style. B. Review notes every day. C. Consistently study the same way. D. Use techniques that appeal to all three learning styles
asked by caroline 
chemistry
What is the molarity (moles per liter) of an aqueous solution that is prepared by dissolving 5.58g NaOH (MW=40) in enough water to make 250mL of solution?
asked by Kishwa 
Quick Math Question
How do I add time? If a person worked 4 1/2 hours on Monday, 4 1/2 hours on Tuesday and 2 hours on Wednesday, does that add up to 12 hours? If not, how much more time would the person need to work the next day to equal 12 hours?
asked by Q 
Intermidete Algebra
A rectangle's length is twice its width and it's perimeter is 48m. Find the dimensions.
asked by Annie 
Maths
What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?
asked by Ian 
math
Part 1 : Store equipment is purchased on January 1, 2002 at a cost of $14,000 and $1,000 was spent on its installation. The depreciation is writtenoff at 10% on the original cost every year. The books are closed on December 31, every year. Instructions:
asked by elle 
Algebra
Mr. Jones estimate his profit starting in 2006 will be given by the formula P=7t^214t+10 where t is number of years and P is the profit. If this formula is correct, when will Mr. Jones have a profit of more than $1000.00?
asked by Justin 
math
The pie chart shown in Figure A6 illustrates the favorite foods of a selected group of fiveyear old children. A total of 5,280 children were polled in order to construct this chart. According to the information provided in the chart, how many children
asked by POP 
Science Grade 8
Siberian tigers originated in the far northern continent of Asia. The climate is extremely cold, since much of the land is within the Artic Circle. They were forced south over time and now reside in Southeast Asia, such as India, Thailand and Cambodia.
asked by Anonymous 
Math
All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: 1. List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was
asked by Tammy 
statistics
Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recorded times, the height of the bar over the interval “1 hour to 3 hours” is 4% per hour. The height of the bar
asked by TT 
statistics
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. (a)One of the
asked by pat 
math
mary jogged 5 7/10 miles on monday and 4 1/8 miles on tuesday. Raul jogged 6 1/2 miles on monday and 3 4/5 miles on tuesday. How much farther did raul jog on monday than tuesday.
asked by Chris 
Algebra Multiple choice revised!! HELP
I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give
asked by Kris 
science
1. For the three cubes shown below, determine their surface area, volume and surface area to volume ratio. Then, circle the one you believe would be the most efficient and write a summary stating why.
asked by clarke 
Algebra
Mr. and Mrs. Abdullah invest a total of $10,000 in two savings accounts. One account pays 5% interest and the other 6%. Find the amount placed in each account if the accounts receive a total of $540 in interest after one year.
asked by Lora 
Management
The price P per unit at which a company can sell all that it produces is given by the, function P(x) = 300 — 4x. The cost function is c(x) = 500 + 28x where x is the number, of units produced. Find x so that the profit is maximum., Question:, 1) Find the
asked by Rajan 
Algebra
Two cars start at the same point at Alexandria, verginia, and travel Ans 50mph, 55mph 2 opposite directions. One car travels 5 miles per hour faster than the other car. After 4 hours, the two cars are 420 miles apart. Find the speed of each car.
asked by Lora 
physics help
The upper surface of a cube of gelatin, 6.9 cm on a side, is displaced 0.67 cm by a tangential force. If the shear modulus of the gelatin is 946 Pa, what is the magnitude of the tangential force?
asked by zena 
Math
the perimeter of a rectangular field is 140m. If the length is increased by 15m and breadth is decrease by 5m, the length will become 3 times the breadth. Find the length of breadth of the field.
asked by joe 
PHYSICS!!!!
An 80 kg man is riding in an elevator from the first floor to the 34th floor. The elevator and man are moving at a constant speed. What is the net force on the man in Newtons.
asked by please help me out!! 
ALGEBRA(Sum of Absolute Value Differences)
As x ranges over all real values, what is the minimum value of f(x)=x−123+x−456+x−789?
asked by please help me out!! 
programming
Create the logic for a program that prompts a user for three numbers and stores them in an array. Pass the array to a method that reverses the order of the numbers. Display the reversed numbers in the main program.
asked by stephanie 
Algebra
The floor of a shed has an area of 54 sq.feet. Find the length and width if the length is 3 feet less than twice its width.
asked by Lora 
Geometry
A right triangular prism has volume equal to 288 cm^3 . The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine the length of the hypotenuse (in cm) of the triangular face.
asked by John Corner 
math8
there are two box and whisker plots class a: median=83 maximum #=100 minimun#=70 upper quartile=85 lower quartile=80 class b: median=80 maximum= 100 minimum=60 upper=90 lower=70 what describes the results? the medians for the two classes are the same. (i
asked by Anonymous 
math
need to know how to find the distrbutive property of 50x62,159= (50x )+(50x )+(50x100)+(50x50)+(50x9)
asked by Alaina 
Algebra multiple choice!
I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give
asked by Becca 
philosophy
I am to write a two page dialogue between Socrates and a person. I was thinking about writing about domestic violence. What do you think about that subject. Should I use statistics and numbers regarding this issue.
asked by angela 
Lang. Arts
"Great works are performed, not by strength, but by perseverance.” The quote from Samuel Johnson at the beginning of the story suggests that the story will be about A.the roles people perform in life. B.making adjustments to goals. C.developing stronger
asked by Cassie 
Grammar (Ms. Sue)
Is this correct way to write the word "borrow" in present progressive tense? "Today, the average American is borrowing more money than ever before."
asked by Anonymous 
Algebra Multiple choice!!! Help
1.) Find the values of a, b, and c that will make the statement true. [5 a 2] [5 102] [3 4 –b] = [3 4 3] [2c 5 9] [2 5 9] a.) 8R1R2> =R2 b.) 8R1R2 > =R2 c.) –8R1 +R2 > =R2 d.) 8R1R2 > =R2 2.) Solve the system by triangularizing the
asked by Kris 
dividing fractions
What is 4/9 divided by 1 1/2
asked by Anonymous 
Chemistry
How many mL of 12M HCl is needed to create 350mL of 0.125M HCl?
asked by Katie 
Probality
in a case in riverhead, New York, nine different crime victims listened to voice recordings of five diffent men. All nine victims identified the same voice as that of the criminal. If the voice identified were made by random guesses, find the probality
asked by Anonymous 
chemistry
How many milliliters of 0.602M hydrochloric acid (HCl(aq)) must be added to 15.00mL of 0.538M sodium hydroxide (NaOH(aq)) to reach the equivalence point? Report your answer to 2 decimal places.
asked by Anonymous 
Spanish
I tried on 8 but i didn't get 9. I do not know how to do these, so please help. Thank You. 8. Which of these sentences is correct? Juego baloncesto. Juego a la baloncesto. *Juego al baloncesto. 9. Which of these sentences is correct? Juego al golf. Juego
asked by Jack 
physics
a 125 cm long string has a mass 2.0g and it is stretched with a tension of 7.0 IN between fixed support
asked by pooja 
Stats
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 1. One of the
asked by Judy 
english
Which of these are epics? A.Gilgamesh B.Beowulf C.The Odyssey D.All of the above E.I'm not sure.
asked by cora 
physics
A 92kg man's thighbone has a relaxed length of 0.56 m, a crosssectional area of 6.0 104 m2, and a Young's modulus of 1.2 1010 N/m2. By how much does the thighbone compress when the man is standing on both feet? 1 µm
asked by zena 
chemistry
A certain weak base has a Kb of 8.40 × 107. What concentration of this base will produce a pH of 10.34?
asked by Anonymous 
physics
An apple (m = 125g) is attached to a vertical spring (from a ceiling) that has a k value of 55 N/m. The apple is held up so the spring is unstretched. When the apple is released, a) how far will the spring stretch? b) How fast will it be going when it has
asked by R 
government
how did the watergate scandal gain attention? and why was an investigation launched?
asked by hannah 
Product of Roots of Sums of Products of Difference
What is the product of all roots to the equation ++(x−1)(x−2)(x−3)+(x−2)(x−3)(x−4)(x−3)(x−4)(x−5)+(x−4)(x−5)(x−6)(x−5)(x−6)(x−7)+(x−6)(x−7)(x−8)=0?
asked by please help me out!! 
math
the diamond taxi company charges an initial fee of $3.00 plus $2.00 per mile for each ride. a) using the table show the cost (C) of taking a taxi 05 miles number of miles cost(c) 1 ? 2 ? 3 ? 4 ? 5 ? can you show me to do the number of miles for 1 and then
asked by Anonymous 
Maths
Let f be the function defined as f(x)=x2 in the domain [−7,+7]. The range of f(x) is [a,b]. What is the value of a+b?
asked by Ian 
Math
What is 9/20 in simplest form?
asked by Ashley 
Statistics
An orchestra consists of 25 members. The youngest member is 32 years old. She leaves and is replaced by a new member who is 30 years old. By how much does the replacement change the average age of the members of the orchestra? By how much does the
asked by Andrea 
concepts to population health
Why is it important to use rates for comparison of health and disease among subpopulations?
asked by keisha 
Finance
They will need 200,000 in 18 years and they can expect a rate of return of 6 %. How much will they need to invest annually. I would have set it up and gotten $70068.76 but then do you divide by 18?
asked by Kate 
Stats
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 1. One of the
asked by Judy 
math
how many posts will be needed if the fence has 47 sections?
asked by booty 
math
a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute? I think it is m but not sure, can you help me understand how to figure out this equation. Thanks
asked by Ellie 
Life orientation
In 10 to 15 lines critically discuss 5 ways in which human or environmental problem impact on the community.Provide relevant sources to support
asked by Natalie 
math
The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points. For about 95% of the students, the
asked by eh 
Grammar (Ms. Sue)
What is the present progressive tense of "study"?
asked by Anonymous 
Grammar (Ms. Sue)
How am I supposed to write the capitalized word in present progressive tense? "People (LIVE) today in a way that is very different from the way their parents and grandparents once lived."
asked by Anonymous 
Maths
What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?
asked by Ian 
Algebra
Paula Scott, a massage therapist needs 3 ounces of a 20% lavender oil solution. She has only 5% and 30% lavender oil solutions available. How many ounces of each should Paula mix to obtain the desired solution?
asked by Lora 
Simple Calculus
Let y = x^3 + ax^2 + bx. If (x,y) = (2,64) is a point on the curve and the slope of the tangent at x=1 is 3, what is the value of a+b?
asked by Lucy 
physics
A pail with water (mass = 15 kg) is raised using a pulley system, if the pail accelerates upward at a rate of 1.45 m/s^2, how much is the tension on the rope?
asked by Anonymous 
Life orientation
In 1015 lines,critically discuss 5 ways in which human or environmental problem impacts on the community.Provide relevant sources to support your claims.
asked by Natalie 
Algebra Multiple Choice help!!
I need help with these! I got B for 1. C for 2. and D for 3. Thanks for the help! 1.) Find the values of a, b, and c that will make the statement true. [5 a 2] [5 102] [3 4 –b] = [3 4 3] [2c 5 9] [2 5 9] a.) 8R1R2> =R2 b.) 8R1R2 > =R2 c.)
asked by Kris 
Lit
What works has become a classic expressions of the meaning of American democracy?
asked by Jane 
Fluid Mechanics
2. The discharge through a Francis turbine rotating at 150 rpm is 1.5 m3s1. The outer and inner diameters of the turbine runner are 1500 mm and 1000 mm respectively. The runner thicknesses at entry and exit are 100 mm and 250 mm respectively. The power
asked by Anonymous 
math
if in a spinner of 18 if the probability of even numbers is 4/8 and probability of multiple of 3 is 2/8. isn't the answer 6/8/
asked by Anonymous 
algebra
The perimeter of a triangle is 47 miles. The first side is 5 miles less than twice the second and the third is 2 miles more than the first. Find the lengths of each side.
asked by Chris 
Maths
Given tanθ=−4/3, where π/2
asked by Ian 
math please help
a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute? I think it is m but not sure, can you help me understand how to figure out this equation. Please help! Thanks
asked by Ellie 
spanish
15. If you do an activity every day, which expression would you use to express that? siempre *todos los días nunca muchas veces a veces 16. If you do an activity always, which expression would you use to express that? *siempre nunca todos los días muchas
asked by Jack 
Simple Calculus
The sequence \{x_n\}_{n=1}^{n=20} is defined as x_n = (1)^n n. What is the sum of all the terms in the sequence?
asked by Lucy 
Simple Calculus
If f(x)=(x+1)^3(x^21)^2, what is the value of f'(2)? Details and assumptions f'(x) denotes the derivative of f(x).
asked by Lucy 
math
the ages of a son and father are in the ratio 3:8. if the son is 35 years younger than his father. find their ages.
asked by joe 
Algebra
solve for x: (1) (3/4x) + (5/6) (2) [(6x7)/4] + [(3x5)/7]
asked by Cedric 
math
how many posts will be needed if the fence has 47 sections?
asked by bootycall 
algebra
Determine whether the following is a polynomial. 937g2h3  238gh2 + 54gh
asked by anna 
Quantum Physics
Suppose we ran m steps of Grover's algorithm on some function f (which has one marked element y) and the resulting superposition was exactly y⟩. (a) What was the state after the (m−1)th step? Note that you can describe the superposition by specifying
asked by plz help 
Reiny please help!Algebra
I need help with these! I got B for 1. C for 2. and D for 3. Thanks for the help! 1.) Find the values of a, b, and c that will make the statement true. [5 a 2] [5 102] [3 4 –b] = [3 4 3] [2c 5 9] [2 5 9] a.) 8R1R2> =R2 b.) 8R1R2 > =R2 c.)
asked by Becca 
programming
The village of Ringwood conducted a census and created records that contain household data, including income. Ringwood has exactly 75 households. Write a program into which a village statistician can enter each of the 75 household income values, and
asked by stephanie 
public speaking
communicating effetively helps us to succeed in areas of
asked by Anonymous 
dividing fractions
What is 4/9 divided by 1 1/2
asked by Anonymous 
Math
Jimmy jumped into a lake from a 12foothigh cliff with an initial upward velocity of 7 feet per second. Find the time in seconds it took Jimmy to enter the water. Use the model for vertical motion given by the equation h = 16 t squared + vt + s
asked by Nancy 
Biology dilutions
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any
asked by Remy 
Maths
What is the sum of all integer values of n satisfying 1≤n≤100, such that n^2−1 is a product of exactly two distinct prime numbers?
asked by Ian 
Math
Write 2.97 as a fraction, decimal and percent
asked by Kim 
Solve the inequality
Solve the inequality algebraically 8x3 ≥ 3x^2
asked by Alley 
algebra......
Given f(x)=(x−1)(x−2)+(x−2)(x−5)+(x−3)(x−8), what are the sum of the roots of f(x)?
asked by i need help from anyone! 
algebra1
mr jones estimates his profit starting in 2006 will be given by the formula p=7t^214t+10 where t is number of years and p is the profit.if this formula is correct,when will mr.jones have a profit of more than $1000
asked by mimi 
Life orientation
Community organizations that are involved in supporting HIV
asked by Natalie 
Math
5(t8)(t+7)=6
asked by Bob 
mathematics
what is a rectangular area model?
asked by robert