Questions Asked on
April 16, 2013

Math
Explain how to write a function rule from the table below. Then write a function rule. x 2 4 6 y 1 0 –1 I don't get these Please help.
asked by Slick Silver 
PreAlgebra
A backtoback stemandleaf plot showing the points scored by each player on two different basketball teams is shown below. What is the median number of points scored for each team?
asked by Anonymous 
4th grade math
a circle is divided into 18 equal parts. how many degrees is the angle for each part? how many degrees is the angle for 5 parts?
asked by Anonymous 
Chemistry
Hi, could someone please take a look at the following question? Use the data given below to construct a BornHaber cycle to determine the lattice energy of CaO. DH°(kJ) Ca(s) → Ca(g) 193 Ca(g) → Ca⁺(g) + e⁻ 590 Ca⁺(g) → Ca2⁺(g) + e⁻ 1010 2
asked by Constantine 
algerbra
Type of Cookie Adults Children Total Chocolate Chip 5 10 Peanut Butter 8 6 Oatmeal 7 4 18. Based on the twoway frequency table, how many adults were surveyed? (1 point)13 15 20 40 19. What percentage of the children chose peanut butter? (1 point) 25% 30%
asked by Isaiah 
chem
3 Ce4+(aq) + Cr(s) ¨ 3 Ce3+(aq) + Cr3+(aq) What is the emf of this cell when [Ce4+] = 2.9 M, [Ce3+] = 0.11 M, and [Cr3+] = 0.015 M?
asked by sarah 
Math
What is the speed of a walking person in m/s if the person travels 1000m in 20 minutes.
asked by Kelley 
English
1. Which of the following is not a good strategy for listening appreciatively? Observe the use of gestures to enhance the message. Listen for changes in volume that emphasize important ideas. *Look around the room to take in all the details of the
asked by Cassie 
statistics
The GPAs of all students enrolled at a large university have an approximately normal distribution with a mean of 3.02 and a standard deviation of .29. Find the probability that the mean GPA of a random sample of 20 students selected from this university is
asked by lol 
Math
Please help with math!!!!!? 1. A bag contains 9 tiles numbered 1 to 9. P(4) = (1 point) . experimental; the result is found by repeating an experiment. . experimental; the result is based on the number of possible outcomes. . theoretical; the result is
asked by Chico 
math
Jenny borrowed $500 for five years at 4 percent interest, compounded annually. What is the total amount she will have paid when she pays off the loan? total amount = P (1 + i)t
asked by jocelyn 
Please Help!! Math
A display of cans on a grocery shelf consists of 20 cans on the bottom, 18 cans in the next row, and so on in an arithmetic sequence, until the top row has 4 cans. How many cans, in total, are in the display?
asked by Jnr John 
Alg 1
Landon is standing in a hole that is 6.5 ft deep. He throws a rock and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y = 0.005x^2 + 0.45x  6.5, where x is the horizontal
asked by Jane 
4th grade math
brian cut an extra large round pizza into 12 pieces. 7 of the pieces were eaten. what angle measure of pizza is left?
asked by Jordyn 
Chemistry
2. In a calorimeter, 40.0g water at room temperature (20.4 C) was mixed with 60.0 g of water that was initially 48.9 C. The resulting mixture reached a maximum temperature of 37.3 C. Calculate each of the following. a) The heat released by the hot water.
asked by Joel 
Science(Chemistry)
The effect of intemolecular forces on evaporation chemicals:water,nail polish remover,methylated spirits nd vinegar
asked by Neo 
Chemistry
How many grams of Na2O are produced when 62.5g of Na reacts?
asked by Trena Fuller 
Math>> Help!!
After knee surgery, your trainer tells you to return to yuor jogging program slowly. He suggests jogging for 12 minutes each day for the first week. Each week thereafter, he suggests that you increase that time by 6 minutes per day. How many weeks will it
asked by Jnr John 
English
1. whisk:_____::sombrero:hat 2. armed forces:mess::students:____
asked by Hayden 
Data Management
A bag contains three green Christmas ornaments and four gold ornaments. If you randomly pick two ornaments from the bag, at the same time, what is the probability that both ornaments will be gold?
asked by Hannah 
Chemistry
3. 25.0 mL of a 0.50 M solution of acid HA was combined with 25.0 mL of a 0.50 solution of base MOH in a calorimeter with a calorimeter constant of 13.5 J/ C. The initial temperature of the solution was 23.3 C and the maximum temperature was 34.7 C. The
asked by Kim 
alg 1
Find the percent error in calculating the volume of the prism. V=(bw)(h) v=11 x 8 (7) V=616 my choices were: 19% 10% 119% 83% I'm not sure what it means to find the percent error. Please explain. Thanks.
asked by Jane 
Statistics
A purchasing agent at the Kelly Bread Company wants to estimate the mean daily usage of rye flour. She takes a sample for 50 straight days and finds that the sample mean is 180 pounds with a sample standard deviation of 38.5 pounds. a) State the 90%
asked by Jamie 
Social Studies Ms. Sue please
4. Two leaders who contributed to independence in South America were (1 point) Miguel Hidalgo and Jose Morelos. Jose de San Martín and Simón Bolívar. Toussaint L'Ouverture and Bernardo O'Higgins. Simón Bolívar and Prince Ferdinand. 7. The Line of
asked by Delilah 
Social Studies
How did the transcontinental railroad spur Western settlement?
asked by Anonymous 
organic chemistry
Write equations showing how caffeine could be extracted from an organic solvent and subsequently isolated
asked by Kelli 
grammar
In what way will the recognition of writing patterns help you to grasp the main idea in a paragraph?
asked by Anonymous 
sibongamandla life orintation
Critically discuss 5 way in which teenage pregancy impact on the community.
asked by mpumie 
programming
Write a program that requests the numeric grades on a midterm and a final exam and then uses a Function procedure to assign a semester grade (A, B, C, D, OR F). The final exam should count twice as much as the midterm exam, the semester average should be
asked by Shirley 
chemistry
If the equilibrium constant for a oneelectron redox reaction at 298 K is 7.8 104, calculate the corresponding ÄG° and E°cell. how would i set this problem up?
asked by sarah 
Chemistry
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a ceramic vase for its WO3 content, a 10.10 g sample of the vase was ground and reduced with Pb(Hg) to convert any WO3 to W3 . The
asked by Jessica 
Chemistry
A current of 4.60 A is passed through a Cr(NO3)2 solution for 1.10 hours. How much chromium is plated out of the solution?
asked by Help 
math
An arithmetic sequence is represented in the following table. Enter the missing term of the sequence. 10,2,14,26,?...
asked by mari 
Physics
A man whose mass is 80kg stands on a weighing machine inside a lift: when the lift starts accelerating upwards, the reading of the weighing machine was observed to be 96kg. Determine the upward acceleration of the lift?
asked by Musa Abdullahi 
Calculus
Convert the polar equation to rectangular coordinates: r = 2cos theta ...and find all points of vertical and horizontal tangency.
asked by Liz 
please help me please!!! Math
Find a6 for an arithmetic sequence where a1=3x+1 and d=2x+6 . I can't even solve it because I do not have any idea.
asked by Jnr John 
Macro Consumption Question
(Simple Spending Multiplier) For each of the following values for the MPC (marginal propensity to consume), determine the size of the simple spending multiplier and the total change in real GDP demanded following a $10 billion decrease in spending: a. MPC
asked by Kay 
physics
3 identical charges each having charge 10 coulomb are placed at the corners of an equilateral triangle of side 20cm find the electric field at the centre of triangle
asked by aditi 
Annuity math
The city of Toronto’s population rose from 2,000,000 to 4,500,000 in the last twenty years of the twentieth century. What was the annual average percentage increase in population for that period?
asked by naomie 
english
Thoreau writes, "When our lives cease to be inward and private, conversation degenerates" to become A. mindless and sterile. B. seeking an advantage over others. C. a fantasy about a fiction. D. mere gossip.
asked by loka 
L.O
1. identify and describe 3 environmental health hazards that cause ill health,crises, and/or disasters within your community or any other community withing SA and globally. Include evidence that is current of the identified issues, use graphs, statistics,
asked by Monica 
HELP!!! Math
You visit the Grand Canyon and drop a penny off the edge of a cliff. The distance the penny will fall is 16 feet the first second, 48 feet the next second, 80 feet the third second, and so on in an arithmetic sequence. What is the total distance the object
asked by Jnr John 
math
what is a verbal rule in math?
asked by Amanda 
Math help
I am so lost I have a problem. Two congruet figures. First trapezoid: 1 side b is 10 1 short base prarallel 6 Angle D 86 degrees Angle C 41 degrees Angle B ? Angle A ? Other angle J is 133 degrees Angle M ? Angle K ? Side d leg 17 Angle L ? long Base
asked by Corey 
CALCULUSplz help!
For the curve r = 2 sin 3(theta): Find the arc length of one petal
asked by Sara 
science
If 1.38 g of steam at 100.0°C condenses into 38.6 g of water, initially at 27.6°C, in an insulated container, what is the final temperature of the entire water sample? Assume no loss of heat into the surroundings. °C
asked by john 
physics
a room with floor measurement 7m by 10m contains air of mass 750kg at a temperature of 34 degree celcius. the air is cold untill the temperature falls to 24 degree celcius. calculate the hight of the room
asked by bestuff 
math
Two different relationships are shown below. Relationship 1: xy = 3 Relationship 2: A graph is shown that has the following points plotted: one comma three, two comma six, three comma nine, four comma twelve. a) Identify each relationship as direct or
asked by erika 
Literature
In I Am Nujood, what enables Shada to take up Nujood’s cause so quickly and effectively? How does Shada, whom Nujood calls her “second mother,” open up Nujood’s world? Who else teaches Nujood about what a “real” family can be like?
asked by Kris 
Trig
From a certain distance from the base of a Giant Sequoia tree a surveyor determines that the angle of elevation to the top of the tree is 47deg. The surveyor then walks 100 feet away from the tree and determines that the angle of elevation to the top of
asked by Mary 
chemistry
A gas absorbs 25kj of heat and does 12kj of work calculate (triangle) E
asked by S 
Chemistry
A current of 4.60 A is passed through a Cr(NO3)2 solution for 1.10 hours. How much chromium is plated out of the solution?
asked by Help 
Math
A meteoroid changed velocity from 1.0 km/s to 1.8 km/s in 0.03 seconds. What is the acceleration of the meteoroid?
asked by Emily 
Data Management
How many ways can the manager of a baseball team put together a batting order of his nine players, if the shortstop must bat 3rd?
asked by Hannah 
Chemistry
How many grams of magnesium nitride are formed from 45.1 moles of magnesium?
asked by Sophie 
Math>> Help!!
You complain that the hot tub our hotel suite is not enough. The hotel tells you that they will increase the temperature by 10% each hour. If the current temperature of the hot tub is 75 Fereneit Degrees, what will be the temperature of the hot tub after 3
asked by Jnr John 
Science
In 0.5 seconds, a projectile goes from 0 to 300m/s. what is the acceleration of the projectile?
asked by Emily 
algebra
Do you like roller coasters? If you were asked to design a roller coaster, what would it look like? Would it have steep hills? Would you design the tracks to go upside down? Did you know that polynomial equations are used by the structural engineers who
asked by Gina 
English..Ms.Sue(take a look here please)
Discuss the society in Brave New World as a utopia. What should i make my thesis be??? Please help im so lost. It is a utopia •English  Ms. Sue, Tuesday, April 16, 2013 at 1:14pm I think a good thesis would be: Brave New World reflects a dystopia, not a
asked by Nancy 
Math
In a store, pencils have one price and pens have another. 3 Pencils and 2 pens cost 78 cents. 2 pencils and 3 pens cost 72 cents. How much does 1 pencil and 1 pen cost? Help! I don't get this.
asked by Nomad 
Math
Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
asked by Katie 
`Math
A rectangular park has an area of 6 square miles. The width of the property is 3/8 the length of the property. What is the width of the property?
asked by Micah 
algebra 2
find all the zeros of this equation 4x^4 + 4x^3  11x^2 12x 3 = g(x)
asked by jinie 
Social Studies
Could cattle ranchers have stopped the decline of the cattle industry that occurred in the late 1880's? My answer: No, because the decline of the cattle industry is due to changes in customer's interests?
asked by Anonymous 
statistic
A sample of 59 nightschool students' ages is obtained in order to estimate the mean age of nightschool students. x = 25 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.)
asked by john 
Chemistry
A 2.304 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.500 grams of KI and 50.00 mL of a 0.00912 M KIO3 solution. The excess I3– was
asked by Jessica 
math
The city of Toronto’s population rose from 2,000,000 to 4,500,000 in the last twenty years of the twentieth century. What was the annual average percentage increase in population for that period?
asked by naomie 
General chem
How many electrons can have the quantum numbers n=4; l=2; ml=2 in an atom?
asked by Monika 
Calculus 1A
The problem is: Verify the given linear approximation at a=0. Then determine the values of x for which the linear approximation in accurate to within 0.1. LN(1+x) ≈ x I found f(0) = 0 and f'(0) = 1 I have an equation: LN (1+x) (.1) < x < LN(1+x) + 1 The
asked by Mary 
English
I need help with these questions. Which of the following options best demonstrates sentence fluency? A. The city looked beautiful in that it was lit by the sun while I was walking down the street. B. Walking down the street in the sunshine, the city looked
asked by Sammy 
math
in triangle BCD, find the value of angle B, if b = 41 cm, c = 65 cm, and d = 52 cm.
asked by nova22ca 
Algebra
Expand the expression without exponents log4 x^4y^7/4 how do I start solving this equation? Thanks, for your help.
asked by Deb 
Algebra 2
maximize p=6x+10y minimize p=14x+9y use elimination to solve: 4x+5y=41 7x+5y=53 4xy=16 4x5y=32 2x4=8 x+2y=9 9x5x=13 4x6y=2
asked by Roman 
math
A recipe for snack mix has a ratio of 2 cup of nuts 4 cups of pretzels and 3 cups of raisins. How many cups of nuts are there for each cup of fractions?
asked by Anonymous 
Chemistry
If 45g of a 2.2% NaHCo3 solution is to be prepared how many grams of NaHCo3 are needed
asked by Karla 
Statistics
Airline overbooking is a common practice. Many people make reservations on several flights due to uncertain plans and then cancel at the last minute or simply fail to show up. Jet Green airlines’ planes hold 100 passengers. Past records indicate that 20%
asked by Precila 
Social Studies
What were the Plains peoples way of life before and after the arrival of white settlers? What were their "meeting survival needs," customs, and land use before and after the arrival of white settlers?
asked by Anonymous 
Math
Please help I don't get how to do this! A spinner has three congruent sectors colored orange, green, and purple. Use the rule of probability of each event. a) landing on orange, then landing on purple b) landing on the same color 2 times in a row.
asked by Cherie 
English
2. Which of the following is not a good strategy for listening for information? Sit comfortably but stay alert. Determine the speaker’s purpose. Formulate a response after a couple of minutes. *Watch for nonverbal cues that signal important points. Thank
asked by Cassie 
physics
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.82 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only onehalf the
asked by Anonymous 
reading grammar and stuff
differece between subject pronoun, object pronoun, reflexive pronoun intensive pronoun. how are they used and examples. we've been learning about this but i'm still confused
asked by li 
calculus (gr 12)
The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c)
asked by Alexandra 
statistics
LSAT test scores are normally distributed with a mean of 490 and a standard deviation of 110. Find the probability that a randomly chosen testtaker will score between 320 and 600. (Round your answer to four decimal places.)
asked by jack 
Statistics
Wildlife biologists inspect 165 deer taken by hunters and find 34 or 20.6% of them carry ticks that test positive for Lyme disease. Calculate the 99% margin of error and confidence interval for the proportion of deer that may carry ticks. How many deer are
asked by Bettie 
U.S/history AP
During french and Britsh fighting Washington declared that U.S.would not choose sides even though Hamilton wanted to support the British and Jefferson the French due to the FRANCOAMERICAN ALLIANCE. I choose (French Revolution )after reading this
asked by joy 
life orientation
give 10 way in which the invironmental health hazard can impact negatively on one's health
asked by lindiwe 
Math
A piece of wire 64 cm long is bent to form a rhombus.What is the length of each side of the rhombus
asked by Angela 
physics
A pitcher throws a 0.168kg baseball, and it approaches the bat at a speed of 45.2 m/s. The bat does 86.6 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 22.5 m above the
asked by Anonymous 
Math
On a recent math exam, Alex received a score of 92%. His zscore is positive 2. If the mean for the exam is 84, what is the standard deviation?
asked by James Jones 
Macro
Real Disposable (Billions) Consumption Expenditures (Billions) Savings (Billions) Income $100 $150 ____________ 200 200 ____________ 300 250 ____________ 400 300 ____________ a. Graph the consumption function with consumption spending on the vertical axis
asked by Kay 
Chemistry
You have 1liter buffer solution containing 0.1 M HF and 0.05 M NaF. Now you add 0.055 moles of HCl to it. A) Do you think that the solution still retains it's effectiveness? B) Explain rationally how you came to the conclusion. I do not think that the
asked by Anna 
Statistics
A large electronics company wants to estimate the proportion of all households that own GPS machines. What sample size is required that would give the maximum error of 2.0% for a 95% confidence interval? An unscentific survey had an inital result of 30% .
asked by Sue 
Calculus
A popular search engine is targeting European countries where the number of online households is expected to grow at a steady rate. Data was taken over time, and it was found that the number of online houses (in millions) projected can be modeled by the
asked by Wiz 
Math
Gerald jumped a distance of 10 1/4 feet at the field events during the district track meet. Juan jumped a distance of 1 1/3 feet less than Gerald. What distance did Juan jump at the track meet? A.9 1/12 B.9 2/7 C.8 11/12 D.11 7/12 C Tory has successfully
asked by Jerald 
Calculus
For the curve r = 2 sin 3(theta): Find the arc length of one petal
asked by Lizzy 
Calculus
A popular search engine is targeting European countries where the number of online households is expected to grow at a steady rate. Data was taken over time, and it was found that the number of online houses (in millions) projected can be modeled by the
asked by Wiz 
Geometry Part 2
At a track meet,50 people ran the 100 meter dash.2 people finished in 11 seconds,5 people finished in 12 seconds,8 people finished in 13 seconds,10 people finished in 14 seconds,21 people finished in 15 seconds,2 people finished in 16 seconds,and 2 people
asked by Karen 
algebra 1
a diagram below shows an artistic design,] if the length of the outer square is 12" and the length of the inner square is 7" what is the area of the remaining glass when the smaller square is cut form the larger square? well i multiplied 12*12 and 7*7 that
asked by li 
psychology
What makes psychology a science????? and What are independent and dependent variables in regards to scientific research in psychology?????
asked by slomomo 
Statistics help please
A survey of 23 customers at a shopping centre asked the distance(km) travelled to reach the shopping centre. The data was entered into Minitab to determine the descriptive statistics.a survey of 23 customers at a shopping centre asked the distance(km)
asked by Bettie 
chemistry
What is the specific heat of an unknown substance if a 2.31 g sample releases 12.5 cal as its temperature changes from 24.9°C to 20.7°C? Please explain ans show steps.
asked by Julia 
Statistics help
wildlife biologists inspect 165 deer taken by hunters and find 34 or 20.6% of them carry ticks that test positive for Lyme disease. Calculate the 99% margin of error and confidence interval for the proportion of deer that may carry ticks. How many deer are
asked by Bettie 
Social Studies
What were the rise and falls of the cattle industry?
asked by Anonymous 
world history
A zimbabwe was a A. tribal leader. B. band of warriors. C. trade route though the desert. D. fortified administration center. Answer:b Incorrect Reference: PAGE 377 3. In his famous sermon of 1095, Pope Urban II saw Christian Europe as A. comprising all of
asked by Anonymous 
Macroeconomics
(Simple Spending Multiplier) Suppose that the MPC is 0.8, while investment, government purchases, and net exports sum to $500 billion. Suppose also that the government budget is in balance. a. What is the sum of saving and net taxes when desired spending
asked by Kayden 
Someone please help me with science?
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic;
asked by Rebekah 
Physics
An 87kg box is attached to a spring with a force constant of 82 N/m. The spring is compressed 11 cm and the system is released. (a)What is the speed of the box when the spring is stretched by 7.0 cm? (b)What is the maximum speed if the box?
asked by Amy 
CALCULUSplz help!
For the curve r = 2 sin 3(theta): Find the arc length of one petal
asked by Sara 
Physics :(( help please TT
A source of ions at point O produces a slightly diverging beam with halfangle of divergence α0≪1. In order to collimate (refocus) the beam, one can apply a uniform magnetic field along the zaxis (see the figure below). If all the ions have the same
asked by OIan 
Alg 1
If y = 1, then (x + 5) times y = x + 5 Which property does it apply to? Cumutative Property of addition? My choices are: Inverse Property of Mult. Identity Property of Mult. Associative Property of addition Cummutative Property of addition.
asked by Jane 
Physics
A hanging spring stretches by 30.0 cm when an object of mass 490 g is hung on it at rest. We define its position as x = 0. The object is pulled down an additional 20.0 cm and released from rest to oscillate without friction. What is its position x at a
asked by Victoria 
U.S/history AP
passed by Federalists to put 16 more district court judges and 1 supreme court justice on bench.Done before jefferson took office.Adams named John Marshall Chief justice and appointed all all 16 of midnight I my answer right Marbury V Madison
asked by joy 
Chemistry
Coordination number of Cr in dibenzene chromium is ??
asked by Clara 
Social Studies
Could cattle ranchers have stopped the decline of the cattle industry that occurred in the late 1880's?
asked by Anonymous 
algebra
A 33footlong speaker wire is to be cut into three pieces. One piece is to be 11 feet long. Of the remaining pieces, one must be 2 feet less than 3 times the length of the other. Find the length of the shorter piece
asked by t 
Calculus
Find the anti derivative of u^2(1u^2+u^4)du. Need steps so I can try to grasp this. Thanks. I couldn't figure out how to write the anti deriv. symbol but it is in front on the u^2. Thanks
asked by Rene 
Math
A piece of fabric measures 36 by 42 inches. A triangular scarf with a height of 25 inches and base of 30 inches is cut from the fabric. How much is left over? A) 762in^2 B) 381in^2 C) 1137in^2 D)568.5in^2
asked by Darcy 
U.S/history AP
1494 made pope to keep his 2 main Catholic countries,Portugal and Spain from fighting each other over the nonChristian world.Signed by Isabella and John II.Divided world with spain getting nonChristian land west of the line and Portugal those
asked by joy 
STATISTICS
The following data represents the monthly natural gas consumption (in hundreds of cubic feet) for a family for a random sample of nine months selected from five years of data. The other variable is Degreedays which is a measure of temperature. Degreedays
asked by Bettie 
Literature
In I Am Nujood, Nujood says that when her family was driven from Khardji, they lost “a small corner of paradise.” How do the injustices endured by Nujood’s father and brother, Fares, show that life in a patriarchal society can be hard not just for
asked by Kris 
Calculus
1) Find the linearization of f(x) = sin(x) at x = 0 AND use it to estimate sin(pi/87.129)
asked by Maria 
Maths
Find the number of solutions to the equation 1/a+1/b+1/c+1/d=1 where a, b, c, d are positive integers and a≤b≤c≤d
asked by OIan 
Life science,Maths and Geography
I am in my last year of high school and not sure of which career path to follow.Please help me with all possible careers to choose from.
asked by Lindiwe 
Calculus
Find the derivatives, dy/dx for the following functions. a. x^2y^4 = lnx + 3y b. y = ln(2x^2 + 1) c. y = ln(ãx) d. y = lnx/x e. y = x^2 lnx f. y ß log_2(3x)
asked by Tima 
Calculus
Find the anti derivative of the following: 1. u^2(1u^2+u^4)du 2. (sqrt(x)+ 3/x  2e^(x))dx The anti derivative symbol is in front of the equations. Also need help on find f(x) so that it satisfies f'(x) = 1+e^x+1/x and f(1) = 3+e. Please show steps so I
asked by Rene 
Chemistry
You are assigned the following amount of CoCl2. Volume of CoCl2 assigned and used 4.84 mL Concentration of CoCl2 1.39 M To this is added... Mass of charcoal 0.23 g Volume of 15.0 M ammonia 5.3 mL Mass of ammonium chloride 1.38 g The ammonium chloride was
asked by cassie 
chemistry
Oxygen gas is collected over water at a temperature of 20c. If the totalmpressure of the system is 755mm, what is the pressure of the dry O2 gas?
asked by karina 
chemistry
Calculate and record the average molar heat of reaction from the three results.
asked by Anonymous 
stats
The dimensions of a rectangular room are 12 feet 10 inches by 10 feet 1 inch. If square tiles of the same size are to cover the floor completely without any overlapping and if only whole tiles will be used, what is the largest possible length for a side of
asked by Anonymous 
Statistics for Development
one hundred students seat for a mathematics examination.the scores from this examination are normaly distributed with a population mean of 65% and a standard deviation of (a=10).what is the probability that students score;(i)less than 75% (ii)at least85%
asked by Benson 
math
1. Which set represents a Pythagorean triple? A:2,5,6 B:6,8,10 C:8,8,128 D:8,10,256 2. What is the hypotenuse of a right triangle if the legs are each 20 inches long? Round to the nearest whole number. A:28 B:29 C:30 D:31 I think the first ones B, and the
asked by jake 
English
. The president invited Senator Smith to the White House for a meeting before preparing his address to the United States congress. 3.Which of the following is an error in capitalization in the sentence above? The word "president" should be capitalized . .
asked by Siman 
Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the
asked by Anonymous 
Social Studies
what economic opportunities drew large numbers of people to the West beginning in the 1860s?
asked by Anonymous 
Physics
A string fixed at both ends is 9.31 m long and has a mass of 0.125 kg. It is subjected to a tension of 100.0 N and set oscillating. (a) What is the speed of the waves on the string? m/s (b) What is the longest possible wavelength for a standing wave? m (c)
asked by Rachel 
Chemistry
Coordination number of Cr in dibenzene chromium is ??
asked by Blossom 
English
Word box abstain accommodate allegiance amalgamate append commemorate enumerate exalt extort farfetched glum replica responsive sanctuary selfseeking submissive tally taskmaster transform upheaval 2.Good employees don't need a(n)) ____ to keep them
asked by Jerald 
Life orientation
In 1015 lines critically discuss 5 ways in wich the human or environmental problem impact on the community.provide relevant sources to support your claims.
asked by Lutendo 
Math help Geometery
If, I ahve a trapezoid with two angles Angle 86 degrees and 41 degrees and angle A 133 degrees then,side b 10 Short base 6 How do I solve to get angle B?
asked by Corey 
Chemistry
Calculate the pH of the following buffer solution that resulted from 125ml of 0.1M NH3 with 250ml 0.1 M NH4Cl ( for NH3, Kb= 1.76x10^5)
asked by Grace 
History please help
Which of the following issues was not on the agenda of the National Organization for Women in the late 1960s a and early 1970s? a. Women should have equal employment opportunities. B. Child care needed to be regulated and more readily available. c.
asked by kristina 
Science
1. Density is the relationship between ____. (1 point) mass and volume cubic centimeters and pounds weight and volume grams and mass 2. Which of the following is NOT a possible sign of a chemical change? (1 point) a change in state a change in color the
asked by HELPMEASAP! 
Physics
A hanging spring stretches by 30.0 cm when an object of mass 490 g is hung on it at rest. We define its position as x = 0. The object is pulled down an additional 20.0 cm and released from rest to oscillate without friction. What is its position x at a
asked by Victoria 
Math/ Calculus Help1
Supplies are dropped from a stationary (not moving up or down) helicopter and, after some amount of time, land on the ground with a velocity of 160 feet per second. Assumptions: Start time at t = 0 and ignore air resistance. Recall that the height
asked by Martin 
Calculus
Find two positive numbers whose sum is 8 such hat when the cube of th first number is multiplied by the second number, the result is maximum.
asked by Ashley 
Physics :(( help please TT
I have a length of string and I want to know the maximum tension the string can support. I tie one end of the string to the ceiling and the other end to a glass of mass 100 g. The glass is cylindrical, with a crosssectional radius of 4 cm and a height of
asked by OIan 
Physics :(( help please TT
A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that no
asked by OIan 
Physics
A heat engine does 650 J of work and dumps 1270 J of heat to its cold reservoir. What is its efficiency?
asked by Seth 
CHM
Consider the following reaction: HCN H+ + CN delta H = 315kJ If 1.00 mole of CN in the form of NaCN was added to equilibrium mixture, describe the effect on [H+], [HCN], [CN], pH, and heat.
asked by Valerie 
english
Give two examples of each of the following elements of fiction and nonfiction from the texts you’ve read in Units 1, 2, and 3. Characters: Plot: Conflict: Setting: Point of View: Theme: Style: Tone: Perspective: Bias: Purpose:
asked by Akeem 
Alg 1
Michael takes 90 min to type 5850 words. If he increases his typing speed by 5 words/min. How many minutes will he take to type 10,500 words? Is it 150 minutes?
asked by Jane 
physics
32 kg child practicing rock climbing, she feel but the rope hung on with a tension of 253N. find acceleration??
asked by Josh 
Math
Ms wanton recycles colored pencils in a box for use in her art class. She has accumulated 4 red 5 blue 3 yellow and 3 green colored pencils. If one of her students reaches into the box and selects one pencil without looking what is the probabiltiy that the
asked by Jerald 
social studies?
Before the invention of the cotton gin, how were seeds removed from cotton fiber?
asked by Anon 
writing
Hello, could someone please look over my English/writing assignment. Any input will help. Not finish still working on end. THANKS A Gift of dying is a Lesson in Living “The truth is once you learn how to die, you learn how to live.” (Albom, 1997, pg.
asked by Jas 
Chemistry
You have 4.271 x 102 mL of oxygen gas (O2) at 7.656 x 102 mm of Hg and 78 oC. What is the mass of the sample in milligrams? What is the ratio of effusion rates for a light gas, such as HF, to a heavy gas, such as UF4?
asked by Tif 
Physics
A large 62.5kg board is propped at a 42 degree angle against the edge of a barn door that is 2.7m wide. How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the
asked by Carlos Tevez 
Algebra
Tell whether each pair of expressions can be simplified to like radicals âˆš2,âˆš32
asked by Aks 
Physics :(( help please TT
The space shuttle had a top orbital speed of 8000 m/s and orbited in a circular orbit approximately 320 km above the earth's surface. How long was one orbit in seconds? Details and assumptions The radius of the earth is 6370 km.
asked by OIan 
Gifted Chemistry
Calculate the freezing point and boiling point of a solution that contains 56.8 g NaCl and 32.0 g KBr dissolved in 750.3 mL H2O.
asked by Alex 
Alg 1
Solve the proportion: 4/x = (radical sign over 11, not 1) 11  1/3 Please solve and explain. My answer does not match any of my choices.
asked by Jane 
Chemistry
Calculate the pH of the following buffer solution that resulted from 125ml of 0.1M NH3 with 250ml 0.1 M NH4Cl ( for NH3, Kb= 1.76x10^5)
asked by Grace 
Chemistry
Consider the following reaction that describes the solubility equilibria of solid Zn(OH)2 in aqueous solution (Ksp of Zn(OH)2 4.0x10^17. Calculate molar solubility of Zn(OH)s in an acidic solution of pH5.0.
asked by Jamie 
Chemistry
Consider the following reaction that describes the solubility equilibria of solid Zn(OH)2 in aqueous solution (Ksp of Zn(OH)2 4.0x10^17. Calculate molar solubility of Zn(OH)s in an acidic solution of pH5.0.
asked by Jamie 
Java programming
List all overloading methods (including constructors) in this coding.. public class Circle { private double radius; private String colour; public Circle() { radius = 0; colour = ""; } public Circle (double r) { radius = r; } double getRadius() { return
asked by nina 
ALGEBRA 2
Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^32197 x= PLEASE, help me with this one problem I am stuck on! THANKS!
asked by student 
Math
Which is in order from least to greatest A.1/4,0.33,2/5,0.5,2/3 B.1/3,1/2,0.4,0.25,2/3 C.1/3,1/4,0/4,1/2,0.66 D.2/3,0.5,2/5,0.33,1/4 A Talent Show auditions were held after school. There were 3 groups who sang for every 2 groups that danced. If there were
asked by Jerald 
Physics
How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board but that the board is firmly set against the ground.
asked by Anonymous 
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⟩. If we run for m+1 additional steps (i.e. total of 2m+1 steps from the initial state), what is the resulting
asked by qwerty 
Calculus
∫3 at top and 2 at bottom x/x^2+1 dx = ? if you could show steps that would be great thanks
asked by Bob 
life orientation
human factors that causes HIV/AIDS ill health
asked by mixo 
Probability
If I have a bag filed with 6 marbles, 2 blue marbles, and 4 yellow marbles, and I had to pick one from the bag, what is my sample space?
asked by Sabrina 
Chemistry
How is solvent extraction by ether used to separate organic entities from mixture of salt,phenol & phenylamine? Thanks!
asked by Matt 
math
What is the probability of 5 or fewer successes in a binomial experiment with 7 trials if in each trial, the porbability of success is .8?
asked by Moyer 
Visual Basic Programming...Very Urgently!!!
Please Can someone help in proving the code about transactiopn program of images. it must have a two diffetrent form that will perform simultaneously which menas that first form will have login password to log in to use the transaction. Please your help is
asked by Jeconiah 
Algebra
I need some help! Determine whether infinite geometric series has a finite sum. If so, find the limiting value. 112+56+28+....
asked by Kris 
Algebra
I need some help! Determine whether infinite geometric series has a finite sum. If so, find the limiting value. 112+56+28+....
asked by Kris 
physics
At the end of 1 s, a horizontally fired bullet has dropped a vertical distance of 4.9 m from its otherwise straightline path in a gravitational field of 1 g. By what distance would a beam of light By what distance would a beam of light traveled in a
asked by Anonymous 
Math
Jocelyn made a spinner If Jocelyn spins only one time what is the probability that the arrow will not land on a red section of the spinner? 3 parts are red 4 parts are blue 1 part is white A.1/8 B.5/8 C.3/8 D.1/2 B Palmer participated in sports for 8 hours
asked by Jerald 
English
Word box abstain accommodate allegiance amalgamate append commemorate enumerate exalt extort farfetched glum replica responsive sanctuary selfseeking submissive tally taskmaster transform upheaval 12.Anne usually seems to be quiet and _____ but she has a
asked by Jerald 
STATISTICS
The manager of an accounting office is studying the problem of incorrect account numbers being entered into the computer system and wishes to produce a p chart. A subgroup of 200 account numbers is selected from each day's enteries and checked to determine
asked by Bettie 
math algebra
Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^32197 x=
asked by student 
English
19.Remember that the Pledge of ____ is not a formula to be repeated mechanically but a summary of our sacred duty to our country allegiance 11.Under the US Constitution officials are never ____ to a point where they are more important or more powerful than
asked by Jerald 
STATISTICS
A local donut shop wishes to test out its donuts against those of the competition which is planning to set up in the community. Each of 50 subjects tastes 2 unidentified donuts and says which they perfer. 31 or 62% of the subjects perfer the local
asked by Bettie 
U.S/history AP
1the act of bringing land into U.S.through agreement of a majority of congress.Texas and hawai joined the U.S.in this manner. 2After TX achieved independence they wanted to be brought into the U.S.Because it would upset the balance of
asked by joy 
french
i need to write a paragraph on passé composé asap!
asked by yesenia secundino 
Calculus
Convert the curve to an equation in rectangular coordinates: x=sin theta + 1 y=2cos theta  1
asked by Elyse 
English Essay IMPRTNT
i have an English persuasive essay due tomorrow. this is the question: SHOULD SCIENTISTS BRING EXTINCT SPECIES BACK TO LIFE? my answer is a yes and i need to reasons. i have one and need help with the other one. can anyone please give me a reason?
asked by Anonymous 
Math/ Calculus
Given an initial guess of x1 = 1, use the NewtonRaphson Method to fi nd the second approximation x = x2 of the solution of the equation: sqrt(x+3)=x
asked by Angela 
maths
A bomber takes off and flies at 500kph. A fighter, setting out 2 1/2 hrs later flies at 750kph. How long will it take for the fighter to catch the bomber, and how far will the bomber have travelled at this time?
asked by Rebecca 
chemistry
how many milliliters of 2.0 M kbr must be diluted to make 250 ml of 0.5 M Kbr?
asked by naveen 
Stastistics
A quality control audit has been devised to check on the sampling procedure when a truckload of potatoes arrive at a packing plant. A random sample of 250 is selected and examined for bruises and other defects. The whole truckload will be rejected if 5% of
asked by Sue 
math
two pieces of metal each are cut into tenths. how many pieces will there be?
asked by nissa 
Calculus
Find the equation of the tangent line to the curve at the given value of t: x=sin(t); y=(cos(t))^2; t=(pi/3)
asked by Laura 
Math
Select the geometric figure that possesses all of the characteristics: (1) four equal sides (2) both pairs of opposite sides are parallel (3) it doesn't contain any right angle A) square B) parallelogram C) rhombus D) isosceles triangle I know it's not A
asked by Lily 
Java programming
Write a Java program that stores Customer accounts with the attributes: (i) Name of the depositor (ii) Account number (iii) Type of account (iv) Balance amount And the methods: (i) Deposit (ii) Withdraw (iii) Display the balance You need to create an array
asked by nina 
Calculus
Find f(x) so that it satisfies: f'(x)=1+e^x+1/x and f(1) =3+e. Please show all steps so I can follow. Thanks.
asked by Rene 
Grammar
Hello. I read a few words and I didn't know what they were. Here are the words; Maw, Modest, impish, and zorua. If someone could explain the meaning of these words, I would be VERY grateful! ;)  angel assassin
asked by AngelWolfAssassin 
Chemistry
What concentration of the salt NaC2H3O2 must be added to shift the equilibrium toward the reactants so that the [H3O+] concentration is reduced to pH = 5.4? Ka=1.8E5
asked by Bobby 
science
list 1 way you can dispose of trash. What is its advantage and disadvantage?
asked by esha 
Trig
Convert this equation so that it could be entered into a calculator in the standard y= format. x^2  4xy + 4y^2  8y + 2 = 0
asked by Lost One 
english
so Ms.Sue, can you help me with my last sentence of intro about what three arguments. I am going to talk about in my body paragraphs.
asked by Nancy 
Algebra
I have 104 feet to build a dog pen. What is the largest width to maximise the area? What is the area? A=52xx2 x=width
asked by Britney 
Life orientation
3 environmental health hazards
asked by Refilwe 
Literature Help?
Which of the following sentences is correct? (1 point) At the slumber party, everybody were asleep after midnight. No one likes to be uncomfortable while sleeping. Each guest have a sleeping bag and a pillow.
asked by Rebekah 
World History
What directly led to the internal expansion and new economic activity in Western Europe from the eleventh to the fourteenth century? A. New and extreme technological achievements B. decline in religious activity C. population reduction D. competition among
asked by Cindy 
English
7.A portion of the forest has been set aside as a bird ___ for the protection of endangered species in the area sanctuary 17.Can you see why it was logical for various labor unions in the clothing and textile industries to ___ into a single organization
asked by Jerald 
chemistry
how many grams of oxygen are in 175 g of C5H10O5
asked by anna 
Math
How many of the triples below could be sides of a right triangle? (40,41,58); (10,25,26); (16,30,33); (20,48,52) A)4 B)2 C)1 D)3 Please help!!!!
asked by Nira 
Help with statistics
The design tolerance thickness for an automotive part is 55mm to 65mm. If the process mean thickness is 61mm with a standard deviation of 2.3mm, then what percentage of the sheets will be acceptable?(What percentage will fall within the design tolerence?)
asked by Bettie 
FirstYear Physics
Question: s22.postimg[dot]org/comasgagh/untitled.png From my calculations, option A is correct. What am I doing wrong? Also, I can't find a relationship between amplitude and energy. Attempt: s9.postimg[dot]org/8shnsrjbj/daum_equation_1366155192269.png
asked by Anon 
Chemistry
How is solvent extraction by ether used to separate organic entities from mixture of salt,phenol & phenylamine? Thanks!
asked by Matt 
Algebra
State the slope for the following: The line through (3,2) and parallel to y=4x+1 The line through (4,5) and perpendicular to y=3x+2
asked by Cristal 
Math
Merrie is putting away the 1 cubic centimeter blocks. She has a box that is 24 cm by 12 cm by 6 cm. How many cubes can she put away in this box?
asked by Gail 
chemistry
how do i find the specific heat of a metal??
asked by lindsey 
stats
suppose that a population of people is 1200. .25 of the population is white. we take a random sample of 100 people. What is the probabilit that more than .29 of these people are white?
asked by d 
Calculus
Use logarithmic differentiation to find the derivative of f(x) = x^x+2 and simplify. Please show steps. Thanks.
asked by Rene 
child development
Johnny is a 5yearold kindergarten student starting school for the first time. What changes do you expect to see Johnny go through in the course of his first year of school? Be specific in your response, addressing changes in his physical, emotional, and
asked by tye 
Chemistry
Three metals P,Q and R form three ionic solids with three nonmetals X,Y, ands Z respectively as follows P2X, QY2, and RZ3. If their molar solubilities are the same, how are their Ksp values related? Please not only explain but write the respective
asked by Grace 
science
list 1 advantage and disadvantage of having a landfill.
asked by esha 
MathTrig
Find all angles in degrees that satisfy each equation. tan(a)+rad3=0
asked by Savana 
4th grade Math
What fraction could be used to express 2 parts that equal 15/17?
asked by marsha 
calculus (gr 12)
Determine the velocity and acceleration as functions of time, t, for s(t) = 45t − 5t^2, where s(t) represents the distance as a function of time. (Hint: velocity and acceleration correspond to the first and second derivatives of the distance)
asked by Alexandra 
U.S/history AP
revivalist of the great Awakening.Younger,less prosperous,wanted predestination,no denominations,believed man was sinful and in a return to old religious ways. is any of these 1Jonathan Edwards 2George Whitefield
asked by joy 
College math
A team played 24 games and won 2/3 of them. How many games did they win?
asked by Marjorie 
Math
Samantha and her family are traveling 325 miles to Houston for the holidays. Her dad drives at a rate of 52 milers per hour during the trip. Base on this info, which of the following statenemnts is a reasonable conclusion? A.Samantha and her family will
asked by Jerald 
Calculus
On what intervals of t is the curve described by the given parametric equation concave up? Concave down? x=t^2; y=t^(3)+3t
asked by Lizzy 
Math
38.In science lab 20 out of 25 students wore protective glasses. The other 5 students filled out lab reports. Which decimal number is equivalent to the fraction of students who did Not wear protective glasses? A.0.25 B.0.80 C.0.50 D.0.20 A 39.Nik is
asked by Jerald 
Chem
Predict the first order splitting patterns of the indicated proton in the following molecules: CH3CH2CH3 (the H in CH2 is selected) a) quintet b) quartet of quartets c)septet
asked by Maura 
Math
Remy can chop 5 carrots in 3 minutes. How long will it take him to chop 120 carrots?
asked by Joe 
Maths
The function f(x)=x^4−15(x^3)+81(x^2)−201x+182 has four complex roots, one of which is 3−2i. What is the sum of all real and imaginary coefficients of these roots? Details and assumptions i is the imaginary unit, where i2=−1.
asked by OIan 
math
The function f(x)=x4−15x3+81x2−201x+182 has four complex roots, one of which is 3−2i. What is the sum of all real and imaginary coefficients of these roots?
asked by ayan 
math
How many ordered pairs of integers (x,y) are there such that 2x2−2xy+y2=225?
asked by ayan 
physic
a 1.6kg block of wood is floating in water. what is the magnitude of the buoyant force the block?
asked by katie 
Geometry
Circle G with center O is tangential to PA at A . Line PO extended intersects G at B (PO
asked by Andy 
Calculus
Find the arc length of the curve described by the parametric equation over the given interval: x=t^(2) + 1 y=2t  3 0
asked by Liz 
arithmetic
If the first term of an arithmetic sequence is 2 and the 7th term is 3278, what is the common difference?
asked by Anonymous 
Life orientation
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
asked by Treccy dolamo 
english
With in sentence should town also be capitalized? The town of Blair, Nebraska, is home to Dana College.
asked by John 
Math
For a fundraiser the soccer team is planning to sell potting soil. The two boxes they will use to sell the soil are shown below. How much do you think they ought to charge for the larger box of potting soil based on the volume of the two boxes? Explain in
asked by Gail 
Calculus
Find the antiderivative of (sqrt(x)+3/x2e^(x))dx. Need steps so I can follow. Thanks
asked by Rene 
social studies
what is one power given to the state governments in the Constitution
asked by lily 
biology help
What are the regulatory enzymes regulated in the citric acid cycle?
asked by meg 
algebra
Write expression as one logarithm and simplify if appropriate. log 3√x+log x^4log x^3 Need help solving we haven't really gone over this yet.
asked by Deb 
Math
Carson wanted to make a cylindrical pillow for his mothers birthday. the pillow was to be 15 inches long, with a diameter of 6 inches. how many cubic inches of stuffing will Carson need to make the pillow?
asked by Amy 
Math
Ms.York has 32 boys and 18 girls in her science class. She ramdomly selects 1 student to help her sweep the floor. What is the probability that the student she selects will be a girl?
asked by Samiya 
math
How do you work with line plots like adding them and how much there is?Thanks if you help!:)
asked by Kim 
math
for input output tables input is 1,2,3,4,5,6 and output is 5,7,9,11,13,15 what is the input output rule?
asked by chelly 
Calculus
Light is absorbed when it passes through a glass window. If r% of light is absorbed by a glass with thickness w , then the percent of light that is absorbed by a piece of glass with a thickness nw of for any natural number n is modeled by the following
asked by Deeno 
Chemistry
We had to calculate the resolution between to peaks resulting from an HPLC assay using an internal standard for determination of an analyte "x". I came up with 2.6, which is considered good resolution. Now we are supposed to calculate the concentration of
asked by Maranda 
chem
barium chloride+ alumium sulphate »barium sulphate + allumium chloride (balance the equation step by step)
asked by harsh 
Statistics
The president of a bank selected a sample of 1500 applications to check if the approval or rejection of an application depends on which one of the two loan officers handles the application. The information obtained from the sample is summarized in the
asked by Bettie 
physics
Suppose you are in space can you decide whether you are in rest or motion
asked by dhanya 
Algebra
I have 104 feet to build a dog pen in a rectangle shape. Area=52xx2 x= width What is the largest width to maximize the area? What is the area?
asked by Amy 
Statistics
The national centre of health statistics reports that the mean systolic blood pressure for males 3544 years of age is 128 and a standard deviation of 15. A group of 50 executives selected at random are tested and found to have an avarage of 132.3. Is
asked by Sue 
Probability
If I have a bag filed with 6 marbles, 2 blue marbles, and 4 yellow marbles, and I had to pick one from the bag, what is my sample space?
asked by Sabrina 
Probability
If I have a bag filed with 6 marbles, 2 blue marbles, and 4 yellow marbles, and I had to pick one from the bag, what is my sample space?
asked by Sabrina 
Excel
Which option must be selected for all sheets within a workbook to be printed?
asked by Caroline 
English
Discuss the society in Brave New World as a utopia. What should i make my thesis be??? Please help im so lost. It is a utopia
asked by Nancy 
College Algebra
Theres this chemistry problem im getting stuck in because i'm confusing myself with the math. Equation given = %O2 saturation = 100 x (pO2/(pO2 + K) %O2 = 35 K = 1.51 how do I calculate pO2?? I can't seem to cancel them out correctly. Answer = 0.813
asked by James 
maths
Given: ax + by=1 where a,b,x,y are integers. which of following the statement is false. i) (a.b)=1 ii) (x,y)=1 iii)(a,y)=1 iv) (b,y)=1
asked by anoynomous 
English
River Traffic The great rivers roll on their way to the sea. And young men and boys ride on flatbottomed boats That carry great cargoes of lumber and wheat To farms and the markets in blistering heat In America’s South where the boats sell their loads.
asked by JJJAYWOW 
parametric equations
On what intervals of t is the curve described by the given parametric equation concave up? Concave down? x=t^2; y=t^(3)+3t
asked by Mary 
Chemistry
When alcohol evaporates according to the equationC2H5OH(l) > C2H5OH(g), how many liters of gaseous alcohol, measured at STP, are created by the evaporation of 566.1 grams of alcohol?
asked by Tif 
Quantum Physics
Consider the observable M that corresponds to a measurement in the sign basis where the measurement value is 3 if the outcome is + and 2 if the outcome is  A)Write M in the standard basis. B)If M is the Hamiltonian acting on a qubit which is in the state
asked by qwerty 
maths
A bomber takes off and flies at 500kph. A fighter, setting out 2 1/2 hrs later flies at 750kph. How long will it take for the fighter to catch the bomber, and how far will the bomber have travelled at this time?
asked by Rebecca 
math
Jane decides to build a wooden pencil box. She allows 32cm along the diagonal. The width of the box is to be 8cm. find the angle that the diagonal makes with the length of the box.
asked by johnny 
math
The point (x,y) lies on both conics x2+xy+x=81 and y2+xy+y=51. Given that x+y is positive, determine the value of x+y.
asked by ayan 
math
What is the sum of all of the positive divisors of 100?
asked by ayan 
Chemistry
Coordination number of Cr in Cr(n^6  C6H6)2 is
asked by Clandestine 
Chemistry
How is solvent extraction by ether used to separate organic entities from mixture of salt,phenol & phenylamine? Thanks!
asked by Matt 
math
If I have a length of paper 48 cm long and 34 cm wide and I divide into 6 eqaul sections what is the area of each section?
asked by Kam 
Calculus
Find f(x) so that it satisfies: f'(x)=1/sqrt(x) and f(4)=2. Please show steps I keep getting stuck at the anti derivative and the constant doesn't solve it so I don't know where I went wrong.
asked by Rene 
essays
Choose the most effective thesis sentence from the following: A. I learned a valuable lesson. B. Life is full of valuable lessons. C. The saying “Honesty is the best policy” is a valuable life lesson. D. Valuable lessons are important in life.Choose
asked by tammie 
Math
How do you solve these type of equations? 2(3x+1.5)=6 Can you please explain it to me?
asked by Bella 
Please...help me over here.,Sequence and series
Insert three geometry means between 1 and 81. I can't even solve it.
asked by Jnr John 
algebra 1 help
if the sides of the sqaure are represented by a and b what is the area of the remaining glass when the smaller square is cut from the larger square? write answer in factored form i don't understand because of the variables
asked by li 
Science
Hello. Can someone please show me a link or something to the Big Bang theory???
asked by AngelWolfAssassin 
Calculus
Find f(x) so that it satisfies: f'(x)=1+e^x+1/x and f(1)=3+e. Another tutor was kind enough to give me the anti deriv as x+e^x+ln x+c and that the constant is 2. But I can't figure how to prove it or where to start so I will know for the test. Thanks.
asked by Rene 
algebra
for the function g(x)=5x^63x^3+x^2x, list the possible rational zeros of g(x) and then use synthetic division to factor g(x) completely.
asked by niki 
chemistry
To maintain the effectiveness of a buffer, relative concentrations of the acid and the conjugate base should not differ by a factor of 10. Based on this information, derive pH range within which the buffer can work effectively. I know that I have to use
asked by Jamie 
chemistry
To maintain the effectiveness of a buffer, relative concentrations of the acid and the conjugate base should not differ by a factor of 10. Based on this information, derive pH range within which the buffer can work effectively. I know that I have to use
asked by Jamie 
math
Find all angles in degrees that satisfy each question. 2sin(a)+rad2=0
asked by Savana 
physics
The space shuttle had a top orbital speed of 8000 m/s and orbited in a circular orbit approximately 320 km above the earth's surface. How long was one orbit in seconds?
asked by Orbital speed 
Chemistry
Substance X (MW=356gm) is a weak acid. Its Ka is 1.7x10^3. Calculate pH of725ml of the following solutions: a)Containing 0.187 mol of substance x b)containing 127gm of Substance x I have been trying to figure this problem out for hours now and do not get
asked by Grace 
Grade 12 Calculus
Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2 , 0 ≤ x ≤ 2
asked by samantha 
calculus (gr 12)
Evaluate each of the following. Show all your calculations. a) f'(3) if f(x) = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X) = −3x^2 − 5x + 7 d)f" (−3) if f(x) = 4x^3 −
asked by Alexandra 
Clinical Chemistry
Anyone here good with clinical chemistry, particularly separation assays and high performance liquid chromatography?
asked by James 
Math 1 question
Damian is paid $70 per day plus a commision of 10% of sales for selling clothing. write an equation for Damian's pay.
asked by Olly 
Calculus
Find the arc length of the curve described by the parametric equation over the given interval: x=t^(2) + 1 y=2t  3 > 0
asked by Liz 
Data Management
How many 4 digit number can be made using 0 7 with no repeated digits allowed?
asked by Hannah 
math,science
In the LotkaVolterra competition equations, if a21 > 1, then:
asked by tg 
Literature
In I Am Nujood, The urban elites Nujood encounters in the courtroom and at the Yemen Times lead very different lives from those of Nujood and the country people of Yemen. How are these “enlightened” people actually disconnected from the rest of their
asked by Kris 
English Ms. Sue
Will you please tell me what you think it is? 2. Which of the following is not a good strategy for listening for information? Sit comfortably but stay alert. Determine the speaker’s purpose. Formulate a response after a couple of minutes. Watch for
asked by Cassie 
calculus (gr 12)
Evaluate each of the following. Show all your calculations. a) f'(3) if f(x) = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X) = −3x^2 − 5x + 7 d)f" (−3) if f(x) = 4x^3 −
asked by Alexandra 
math
Let A,B and C be matrices such that A=⎛⎝132213⎞⎠, B=(122423) and C=AB. What is the sum of all the elements (entries) of matrix C?
asked by ayan 
science
calculate the time taken by a train to travel 1000m if its initial speed is 30m/s and it has an acceralation of 0.1m/s
asked by daniel 
Ratshepo
3 environmental health hazards.
asked by goitseone 
Math
A cirlcle has a diameter of 15 meters. What is the approximate circumference ?
asked by Vanessa 
Calculus
Find the anti derivative of (u^2(1u^2+u^4)du. Need steps so I can try to grasp this. Thanks
asked by Rene 
university of phoenix
bond that has a$1000 par value and a contract interest rate of 10.1%.The bonds have a current market value of $1,120and will mature in 10 years.The firms marginal tax rate is 34%
asked by jordan 
Calculus
Light is absorbed when it passes through a glass window. If r% of light is absorbed by a glass with thickness w , then the percent of light that is absorbed by a piece of glass with a thickness nw of for any natural number n is modeled by the following
asked by Deeno 
math 4th grade
how do you add 2/3 plus 5/8
asked by daniel 
life orientation
Name and describe 3 environmental health hazards that cause ill health crisis and disasters in a community in South Africa and globally
asked by Nickayla Moroka 
Math
A circular pizza with a 12 inch diameter has 20 pieces of pepperoni. How many pieces will a pizza with an 18 inch diameter have?
asked by Stephanie 
Life Orientation
How does Air pollution causes ill Accidents crises
asked by Lerato 
math
How do you figure out the volume of irregular shapes?Thanks if you help!:)
asked by Kim 
math
in triangle lmo, find the value of m, if o=32 cm, l=52 cm and angle e= 73 degrees
asked by nova22ca 
social studies
How can you remember facts about the revolutionary war
asked by B 
chemistry
To maintain the effectiveness of a buffer, relative concentrations of the acid and the conjugate base should not differ by a factor of 10. Based on this information, derive pH range within which the buffer can work effectively. I know that I have to use
asked by Jamie 
calculus
Determine the maximum and minimum of each function on the given interval. a) = 2x^3 − 9x^2 ,−2 ≤ x ≤ 4 b) = 12x − x^3 , x∈ [−3,5]
asked by james 
ALGEBRA 2
Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^32197 x= PLEASE, help me with this one problem I am stuck on! THANKS!
asked by student 
Math
1. Find the total amount if you deposit $500 at a rate of 5% for two years using simple interest. 2. Find the total amount if you deposit $300 at a rate of 6% for three years using simple interest. 3. Find the total amount if you deposit $ 600 at a rate of
asked by Sumii 
Physics
A string of mass 0.0003 kg/m and 0.5m long is vibrating 200 cycles per second. What must be the tension? What hanging mass would produce the tension?
asked by Chris 
math algebra
Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^32197 x=
asked by student 
Calculus help!
On what intervals of t is the curve described by the given parametric equation concave up? Concave down? x=t^2; y=t^(3) + 3t I am a bit confused on how to solve this...any help/explanations are welcome!! (& greatly appreciated!)
asked by Liz 
biology
What are four negative allosteric effectors in the citric acid cycle
asked by Citric Acid cycle 
Life orientation
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
asked by Treccy dolamo 
Maths
x,y and z are positive integers such that x
asked by OIan 
Maths
Let A,B and C be matrices such that A=(1 2 3 1 2 3) , B=(1 2 2 4 2 3) and C=AB. What is the sum of all the elements (entries) of matrix C?
asked by OIan 
life orientation
ways in which accidents impacts on the community
asked by cathrine 
Social studies
How did texas change their government and the way they earned their living after reconstruction?
asked by Sam 
Social Studies
who was the american commander responsible for catching the philippines
asked by Karen 
science
an object with a volume of one cu ft , weighing 150 lbs. is embedded in the sediment at a depth of 99 fy. in the ocean harbor. the object is best lifted to the surface by
asked by richard 
maths
A bomber takes off and flies at 500kph. A fighter, setting out 2 1/2 hrs later flies at 750kph. How long will it take for the fighter to catch the bomber, and how far will the bomber have travelled at this time?
asked by Rebecca 
U.S/history AP
During french and Britsh fighting Washington declared that U.S.would not choose sides even though Hamilton wanted to support the British and Jefferson the French due to the FRANCOAMERICAN ALLIANCE. Alliance of 1778.
asked by joy 
Trig
Rewrite 6x^2  sqrt(3)xy + 5y^2  9 = 0 with the xy term eliminated.
asked by Lost One 
math algebra
Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^32197 x=
asked by student 
Math
Umm Im in 5th grade and I do not under stand this at all because I don't know what the brakets are and how do you you use them heres the question 108 + 3[15  (3 + 9)]=?
asked by Ansley 
math
a=0.03t+1.4 t=8
asked by mealody