Questions Asked on
March 5, 2018

calculus
The reproduction function for a sardine is f(p) = −0.0004p^2+3p, where p and f(p) are in hundred metric tons. Find the population that gives the maximum sustainable yield, and the size of the yield. population=_________ hundred metric tons size of
asked by aj 
Probability
There are 6 methods of travel (walk,run,unicycle,bicycle,scooter,car). For three days, Max decides that he wants to randomly select his method of travel taking him to work. What is the probability that exactly one of the three days, Max walks to work?
asked by PT 
maths
a woman is four times older than her daughter five years ago the product of their age was 175 find their present age
asked by kumar 
Probability
Keisha and Kelly have an astronomy club devoted to observing the moon. If the moon is visible 28 out of 29 days and the girls can make it outside 14 days per 29 days, what is the probability they will go out on a night when the moon is not visible?
asked by PT 
rfvv
1. I take 11 subjects at school. 2. I learn 11 subjects at school. [Can we use 'learn' instead of 'take'? Are they the same? What about 'have' instead of 'take'? Can we use other verbs instead of 'take'?]
asked by rfvv 
English
1. We have three PE classes a week. 2. We have three P.E. classes a week. 3. We have three pe classes a week. 4. We have three p.e. classes a week. 5. We have three Physical Education classes a week. 6. We have three physical education classes a week. [Can
asked by rfvv 
math
In order to accumulate enough money for a down payment on a house, a couple deposits $ 688 per month into an account paying 6 % compounded monthly. If payments are made at the end of each period, how much money will be in the account in 4 years?
asked by shannon 
maths
A train travels 360 km at uniform speed . if the speed had been 5 km / hr more it would have taken 1 hour less for the same journey. find the speed of the train. pl give me a short cut method to solve.
asked by kumar 
As Chemistry
A SAMPLE OF ANTIMONY, Ar=121.8, WAS ANALYSED AND WAS FOUND TO CONSIST OF 60% OF 121Sb AND ONE OTHER ISOTOPE. DETERMINE THE MASS NUMBER OF THE OTHER ISOTOPE IN THE SAMPLE OF ANTIMONY. please help I'm really stuck, Chemistry  bobpursley Saturday, September
asked by 0oooooooo0 
Math
A gardener has to lay a grass lawn, leaving space for an 80 cm wide concrete path along the inside edge of a square garden with an area of 72.25 meter square. what will be the area of the grass lawn?
asked by Deepak 
Math
For painting a triangular courtyard and a square courtyard, an equal amount of paint is required. if the edges of the triangular courtyard measure 16.5 m, 27.5 m and 22 m, find the length of the square courtyard, correct up to 2 decimal places.
asked by Deepak 
English
1. Why's he late again? 2. Why is he late again? [Are both okay? Is #1 commonly used?] 3. Why's he been working till late? 4. Why has he been working till late? [Are both okay? Which one is commonly used?]
asked by rfvv 
Math
What do all right triangles have in common?
asked by Lamont 
English
1.Authorities expect no water shortage this _____ nevertheless, extra wells are being dug. a. summer, b. summer; (B) 2.Among those attending the meeting were Don Wheatly, a retired _____ Louise DiFrenza, the town librarian; and Dana West, a councilwoman.
asked by cristalL5 
English
1._____ wives have always played important social roles. a. President's b. Presidents' (B) 2.My cousin is an extremely _____ child. a. wellbehaved b. well behaved (A) 3. Myra will play in the _____ tennis meet. a. allstate b. allstate (B) 4. _____ mother
asked by ALEX.3 
Bit rate and probability
Attention, please show the calculations in details, comments have to be provided. 1. Calculate the source rate before and after economy coding, using the data from the task 1. Consider that the bitrate is A. Make conclusions. 2. *Calculate the maximal
asked by Alper 
Bit rate and probability
Attention, please show the calculations in details, comments have to be provided. You have information source with M symbols. 1. Calculate the amount of the information in bits for one Mary symbol, considering that the probabilities of the symbols are the
asked by Alper 
History
What was one achivemanet of President George Washington? How did he help his country? What state did he sybmolize?
asked by Jada 
science
What was the big Bang theory? How did scientist learn about it? Why is it so important today?
asked by Jada 
Algebra 2 (Recursive Rule)
What is the recursive rule for the sequence? 7.4, 21.2, 35, 48.8, 62.5 I got an=an+1 13.8 where a1=7.4
asked by John Smith 
Algebra 2 Explict Rule
THe explict rule for a sequence is given. an=4n1 What is the recursive for the sequence? I got a1=3 ; an=an1+4
asked by John Smith 
AP Chem
A firstorder reaction has a rate constant of 0.547 min  1. How long will it take a reactant concentration 0.14 M to decrease to 0.07 M? Not sure how to do this!
asked by Andrea 
math
5h9=16+6h
asked by fruit loops 
biology
Critique two scientific models that explain the origin of life. Thanks!
asked by Anonymous 
Math please help
What are some common or unique formulas that we use in our everyday life? Please add information as to how and why we use the formula.
asked by Clawdeen 
Math
A teacher asks each student in the class to randomly choose a number between 1 to 80 and write it down. Devon and Michiko write down a number. What is the probability that both of their choices will be greater than 60? Express your answer as a decimal. If
asked by Nikol 
Math NEED HELP
A parking lot space is in the shape of a rectangle. If the space has a length of 23 feet and a width of 12 feet, what is the area of the parking lot space? A.128 ft2 B.266 ft2 C.276 ft2 D.138 ft2
asked by _b_l_a_n_k_ 
Language Arts
1. Part A: What can you infer from these lines of dialogue in The Diary Of Anne Frank, Act I? MRS. FRANK: But I'd like to stay with you... very much. Really. ANNE: I'd rather you didn't. A: There are problems in Anne's relationship with her mother. B: Anne
asked by Cy 
Data Management  GRADE 12
A lottery ticket contains 5 numbers chosen from the numbers 1 to 40. The winning ticket is the one that matches all the 5 numbers in the correct order. The second prize winner matches four of the five numbers in the correct order. What is the probability
asked by HELP123 
Music
A moveable do refers to A. each note receiving a do marking. B. the do marking being used multiple times in a scale. C. the do marking being assigned to the first note of a scale, no matter which pitch it starts on. D. the do marking being fixed on middle
asked by Fernando khalifa 
U.S History
What did the first civilizations in Asia and Africa have in common? A. They had organized governments. B. They lacked social hierarchies. My answer is A is it correct?
asked by barsandmelody 
Biology
Sammy notices that the pea plants growing in his garden have purple flowers. What exactly has Sammy observed about the plants? AGenotype BAlleles CPhenotype DGenes C?
asked by Rylee 
Biology
Heterozygous tall and red flowered pea plants were selfed and total 2000 seeds are collected. What is the total number of seeds for both heterozygous traits?
asked by Mini 
biology
Read the scenario. Loretta has a sample that contains a mixture of different DNA molecules. She would like to separate them by size to help her determine the length of each molecule. Which technique should she use? A PCR B Gel electrophoresis C DNA
asked by Rylee 
Math Statistics
Lottery: I buy one of 250 raffle tickets for $5. The sponsors then randomly select 1 grand prize worth $250, 2 second prizes worth $100 each, and 3 third prizes worth $50 each. Below is the discrete probability distribution for this raffle. Prize P(x)
asked by Jim 
Biology
If there is crossing over between two gene loci A and C occurs in 20% of the tetrads and between C and B in 10% of an individual of genotype ACB/acb, what would be the percentage of gametes of double cross over types (AcB/aCb) ?
asked by Mini 
Biology
When a normal female (XX, +/tra) Drosophila is crossed with a normal male (XY, tra/tra), what would be the percentage of males ?
asked by Mini 
English
1. After three days he was arrested and imprisoned. 2. Three days later he was arrested and imprisoned. 3. After three days, he was arrested and imprisoned. 4. Three days later, he was arrested and imprisoned. [Can we use all the expressions? Do we have to
asked by rfvv 
English
1. Oh, my! 2. Oh my! 3. Oh, my God! 4. Oh, my gosh!  Is #1 or #2 from #3? Do we have to put a comma after 'Oh'?
asked by rfvv 
biology
For photosynthetic organisms to become more common than those that get energy from eating organic molecules, what environmental conditions must have changed? I have no clue!! Thanks!!
asked by Katie T 
Physics
Starting from rest, a 2.3x104 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.44 N on it. This force does 2.7x104 J of work on the flea. (a) What is the flea's speed when it
asked by Sidiqa 
Some algebra please help me!
1) Find the surface area of a sphere with a radius of 8 cm. A 267.9 cm B 803.8 cm *** C 2143.6 cm D 2010. cm 2) Find the surface area of a sphere with a radius of 4 ft. A 452.2 m B 150.7 m C 113.0 m D 904.3 m *** 3) Find the volume of a sphere with a
asked by Edward Elric 
Maths
In the triangle OAB, OA = a and OB= b. Show that (ab) times (ab) = (a times a) + (b times b)  (2 times a times b). Hence prove the cosine rule Specifically the Cosine Rule part of question is difficult Thanks
asked by Peirs 
science
For the human body to function correctly, the right amount of sugar must be present in the blood. Several hormones are produced by the body as part of a mechanism to counteract changes in blood sugar so that the amount of sugar remains relatively constant.
asked by Rylee 
math
Lisa descended 120 feet into a cave. She then climbed up 56 feet. If her starting point was 38 feet below sea level at the mouth of the cave, what is Lisa's elevation relative to sea level now?
asked by bug 
math
Palo Alto College is planning to construct a rectangular parking lot on land bordered on one side by a highway. The plan is to use 560 feet of fencing to fence off the other three sides. What dimensions should the lot have if the enclosed area is to be
asked by James 
American Government
The House of Representatives shall be composed of Members chosen every second Year by the People of the several States, and the Electors in each State shall have the Qualifications requisite for Electors of the most numerous Branch of the State
asked by girly girl 
Physics
The electric field that is .25 m from a small sphere is 250 N/C towards the sphere. What's the charge of the sphere? I am completely lost. I have 5 questions due an I don't know where to begin. Can someone help me and explain this stuff to me?
asked by Confuzzled 
Math
How would I do these? 6. The speed of sound is approximately 1.2 × 10³ km/h. How long does it take for sound to travel 7.2 × 10² km? Write your answer in minutes. 7. Evaluate the function below over the domain {1, 0, 1, 2}. As the values of the domain
asked by D 
Social Studies
A system in which a series of workers and machines work to add individual parts to a product is known as a(n)_______and it ______. a. assembly line/helped Georgia's economy by increasing production rates*** b. installment plan/helped consumers purchase on
asked by Anonymous 
Math
Two ships leave the same port at the same time. One ship sails on a course of 110 degree at 32 mi/h. The other sails on a course of 230 degree at 40 mi/h. Find the distance between them after 2 hours. Express your answer to the nearest mile.
asked by Jane 
Math
___ identify the sets to which the number 0.41567 belongs. A. rational number B. irrational number C. integer, rational number D. whole number, integer, rational number please help, and don't just give answers, plz also say how you got them
asked by a n n a 
Math
A surveyor sights two signs and the angle between the two lines of sight measures 55. If the first and the second signs are 70 m and 50 m away,respectively,from the surveyor, find the distance between the two signs .Express your answer to the nearest
asked by Jane 
math
The square root of 76 is between what two numbers?
asked by anon 
ap chemistry
Which of the following rate laws is possible for the following twostep reaction? 1) NO(g) + NO(g) N2O2(g); FAST 2) N2O2(g) + O2(g) 2NO2(g); SLOW Net: 2NO(g) + O2(g) 2NO2(g); A. k[N2O2][NO] B. k[NO]2 C. k[N2O2][O2] D. k[NO][O2] help!!!!! i don't know how
asked by Sophie 
Math
Find the initial value a, growth/decay factor b, and growth/decay rate r for the following exponential function: Q(t)=0.0036(2.58)^−4t a) The initial value is a= (b) The growth factor is b= (c) The growth rate is r=
asked by George Carl 
Biology
All the following statements concerning the theory of evolution by natural selection are true EXCEPT: The bodies of organisms in a population change by use and disuse, and the changes are inherited by the next generation. Why is the above the correct
asked by Anna 
math
The difference between two numbers is 4. The sum of the smaller number and three times the larger number is 36. What are the two numbers?
asked by katie 
Math
Is the function below exponential? q(r)=−8/3^r If so, write the function in the form q(r)=ab^r and enter the values you find for a and b in the indicated blanks below. If the function is not exponential, enter NONE in both blanks below. a=8 b=??
asked by George Carl 
Math ....fractions
Jim walked one quarter of his journey,travelled two thirds of it by bus and cycled the rest.calculate the fraction of the journey Jim cycled
asked by Vera 
Math
Is the function below exponential? G(t)=(5⋅t)^2 If so, write the function in the form G(t)=ab^t and enter the values you find for a and b in the indicated blanks below. If the function is not exponential, enter NONE in both blanks below. a= b=
asked by George Carl 
science
The temperature in the room is rising because the explosion is releasing _____ energy into the air, increasing the speed of the air molecules in the room.
asked by Joshua 
Math
Volunteers for a political campaign gave out 13/29 of their fliers in one neighborhood. They gave out the remaining 768 fliers in another neighborhood. What is the total number of fliers they gave out?
asked by Lakisha Mantel 
biology
Which can be accomplished by DNA barcoding? A)determining the sequence of DNA B)identifying species C)bringing extinct species back to life D)tagging genes to make things glow in routine lab experiments A?
asked by Rylee 
science
Which option correctly defines a scientific theory? an explanation for observable facts that is supported by experimental evidence a scientist’s best guess, or assumption, about the cause of a problem a process of carrying out specific, well controlled
asked by Bri 
science
Determine the CFU/ml if 1 ml of the 105 dilution is plated and 372 colonies are present following incubation. Thank you!
asked by lauren 
History
Mayan gods?
asked by Beenbanned10times 
Math
Every year a lake becomes more polluted, and 5% fewer organisms can live in it. If in 2010 there are one million organisms, write an equation relating N, the number of organisms (in millions), to time t, in years since 2010.
asked by George Carl 
math
which of the following is a true statement? a. when comparing two integers, the integer with the greater absolute value is always the greater integer. b. when comparing two integers, the integer with the greater absolute value could be the lesser integer.
asked by Mackenzie 
algebra 1
multiply and simplify if possible. sqrt(5x) (sqrt(x)5 sqrt(5)
asked by lexi 
Math: Area of Circles
Find the area of each circle shown below. The image shows a) a circle with the diameter of 20 cm and b) a circle with the radius of 7 m.
asked by Cami 
algebra
An insurance salesperson earns a commission of 3% of the first 5000 dollars on insurance that he sells each week and 4 percent of the value in excess of 5000 dollars. One week he earned a commission of 320 dollars. What was the total value of the insurance
asked by Anonymous 
math
if someone travels 360 miles on 20 gallons of gas home many miles can they go on 1 gallon of gas
asked by gina 
Trigonometry
An airplane is headed on a bearing of 140° with an air speed of 500 miles per hour. The course has a bearing of 128°. The ground speed is 580 miles per hour. Find the drift angle, the wind direction, and the wind speed.
asked by John 
math
Barry wants to make a drawing that is 1/4 the size of the original.if a tree in the original. Drawing is 14 inches tall and 5 inches wide,what will be the length and width of the tree in Barry's drawing?
asked by Azilah 
Chemistry
Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money? A. Rolaids (550 mg CaCO3 and 110 mg Mg(OH)2 per tablet) – 150 tablets for $9.44 B. Tums (500 mg CaCO3 per tablet) – 150
asked by Allen 
algebra 2
solve and check for estaneous solutions 4 ^3sqrt(3x3)^2+2=38
asked by lexi 
science
Define inductive reasoning. answering questions by analyzing specific observations and using them to come to a more general understanding doubting or not accepting conclusions or ideas until they have been adequately tested and verified answering questions
asked by Bri 
ELA
What kind of analogies would best be used when writing a serious essay on the topic of 21st century governments around the world?
asked by rosa 
Maths
The diagonals of a rhombus measure 10cm and 24cm. Find its perimeter.
asked by Siddharth 
Chemistry
The problem states, 'A student wants to determine how long it takes to dissolve 51.3 g of common table salt (sodium chloride) in 1L of water by monitoring the solution. It takes 26.7 seconds for the salt to completely dissolve. Determine the rate of
asked by SarahF275 
Guidance and discipline
If children do not develop a competence in fundamental skills of movement they may: A. Never develop fine motor skills B. Lose muscle tone C. Develop poor body image D. Be clumsy in physical actions. Is it C ?
asked by Bev 
Math
what allowed for the expansion of the ranching industry a. laws created by the government prohibited cattle drivers from cutting barbed wire. b.American Indians and buffalo had been removed from the plain of North Texas*** c. railroads allowed for
asked by Matt 
Economics
In not less than 3 pages Explain the process of circular flow of income and product in a 3 sector economy
asked by Favour 
science
Which option correctly demonstrates scientific thinking in practice? The lava flowing from a volcano is very hot because its temperature has been measured to be over 1,000 ºC. The lava flowing from a volcano must be very hot because it is a liquid. The
asked by Bri 
math
I'm working on a project about buying a new car. It says: A common bit of financial wisdom is that a car payment should be no more than 20% of your monthly takehome pay. Set up and solve an equation to determine how much you would need to be making in
asked by carly 
Math
destiny has 6 library books on her desk. one third of them are about animals. how many of destiny's library books are about animal?
asked by Juan 
Creative play
A first grade teacher present her lessons on addition Concept in several ways to accommodate to the children's ways of showing what they know and can do., she includes rap chant about addition, small group practice with math manipulatives and a cumulative
asked by Bev 
Chemistry
A 100.00 ml of volume of 0.500 M HCl was mixed with 100.00 ml of 0.500 M KOH in a constant pressure calorimeter. The initial temperature of individual acid and base was 23.0 oC. The final temperature after mixing was 25.5 oC. The specific heat of the
asked by Kelly 
Math
For Uncle Joe's dairy farm with 200 cows the cost of a methan digester is about 400 dollars. ASsume that the farm uses 800,000 kilowatt hours of electricity each year at a cost of $0.20 per kwh. The waste from a single cow can produce 2.0 kwh of
asked by Anonymous 
Math
Amanda cuts of 45cm ribbon into two pieces in the ratio of 4:5 find the length of the shorter piece.
asked by Math 
Algebra
How do you solve a system of equations by substitution and/or elimination?
asked by Bob Ross 
Psychology
30 Brothers each attend the daily sunset service 4 times a week. Whilst they are all present on Sunday, the numbers present throughout the week varies from day to day. Alan wanted to learn more about the religion. He knew the Brothers were in great demand
asked by Kate 
Geometry
What is the magnitude and direction of the PQ−→− with tail and head points P(6, 0) and Q(2, 4)? Select one: a. 8.9 units, 26.6° north of east b. 8.9 units, 63.4° north of east c. 13.4 units, 0° east
asked by Anonymous 
Creative play
It is important for teachers to make art activities accessible to young children with special needs ,an addition for a child with emotional or intellectual challenges include all of the following except: A. Have a child without this challenges help them on
asked by Bev 
Probability
Grace has 2 yellow balloons and 3 red balloons. Her brother, Caleb, is going to pop two of the balloons at random. What is the probability that he pops one of the yellow balloons and one of the red balloons?
asked by PT 
Math
A plant grew 18 inches in over 5 months. The plant grows the same amount each month. How many inches did it grow in 2 months?
asked by Dillon 
algebra
26 23/27 is 106 2/11 percent of what number?
asked by Anonymous 
Circuits2
Three impedances zL=3+j4 ohms, zC=4j4 ohms and zR=0+j3 ohms are connected in parallel. solve for the power factor of the combination.
asked by Student 
math
Shannon can paint a room in 16 hours. Emily can paint the same room in 20 hours. How long does it take for both Shannon and Emily to paint the room it they are working together?
asked by Kendall 
Trigonometry
An airplane is headed southwest (bearing 225°) with an air speed of 550 miles per hour, with the wind blowing from the northwest (bearing 135°) at a speed of 110 miles per hour. Find the drift angle, ground speed, and the course of the airplane.
asked by John 
Trigonometry
A person can swim at a speed of 2 kilometers per hour in still water. If he heads across a river at right angles to current of 5 kilometers per hour, find his speed in relation to the land and the direction in which he actually moves.
asked by John 
Probability
Triscia had 12 jellybeans in a jar (orange ones, green ones, and purple ones). After she ate all the orange ones (but none of any other color), the probability of taking out a green jellybean by chance was twice as high as it was before she ate any
asked by PT 
social studies
Why are New York,Boston, and Philadelpia important cities
asked by justin 
science
Examine the situation. Gregor Mendel wondered how traits were inherited, but the technology to study genes was unknown. By crossing pea plants and observing their traits, he concluded that the traits of living organisms are controlled by structures called
asked by Bri 
Physiology
How does medication like Clonidine reduce the effects of Heroin withdrawal (mainly chills and anxiety?)
asked by Harry Haller 
science
1. The key ingredient in chocolate; grinding the beans of the cacao tree produces chocolate liquor, which yields cocoa butter and cocoa powder. 2. The key ingredient in chocolate; grinding the beans of the cacao tree produces chocolate liquid, which yields
asked by rfvv 
Chemistry
Consider the reaction when aqueous solutions of silver(I) nitrate and manganese(II) chloride are combined. The net ionic equation for this reaction is? Consider the reaction when aqueous solutions of cobalt(II) sulfate and lead(II) nitrate are combined.
asked by Natalie 
Probability
When rolling 5, 6sided dice, what is the probability that the 5 numbers appearing on the dice are the same?
asked by PT 
chemistry
balanced equation of the ester of methyl alcohol and salicylic acid?
asked by Anonymous 
Science Chemistry
How do I make an electron dot diagram for MgO? (
asked by Jeffery 
english
(who,whom)____ will the choir director choose?
asked by renalyn 
Math
adeline spent 5/8 her money on books and 1/2 of the remainder on food. what percentage of her money had she ledt?
asked by Natalia 
Probability
Alice has 2 identical pairs of red shoes and 1 pair of white shoes, where a pair of shoes is one left and one right shoe of the same color.If she draws two shoes at random, what is the probability that she picks a pair? Give your answer as a reduced
asked by PT 
science
Which option accurately describes scientific theories? (Select all that apply.) are descriptions of phenomena that can be observed to consistently happen over and over again are testable questions that can be investigated through experimentation have
asked by Bri