Questions Asked on
October 29, 2016

math
Julia paddleboat travels 2km/h in stilll water. The boat is paddled 4km down stream in the same time it takes to go 1km upstream what is the speed of the river. Please help and show all work I suck at story problems haha
asked by madison 
Statistics
The Townville Parks Department has just installed 1900 new lightbulbs with an expected mean lifespan of 75 months and a lifespan standard deviation of 12 months. Assuming normally distributed bulb failure, how many bulbs will need to be replaced after 53
asked by Jen 
physics
Calculate the magnitude of the force FM required of the "deltoid" muscle to hold up the outstretched arm shown in the figure below. The total mass of the arm is 2.8 kg and θ = 11°. d=12cm D=24cm
asked by Rpbert 
Math Help
Let A={2, 4, 6, 8} and B={2, 3, 5, 7, 9}. Compute n(A). 17 14 5 8 4 1 Please help thank you
asked by Kal Jay 
chem
how many atoms are there in 0.0300 mole of methane molecules?
asked by john 
Chemistry
Consider the following reaction. CaSO4(s) reverse reaction arrow Ca2+(aq) + SO42(aq) At 25°C the equilibrium constant is Kc = 2.4x10^5 for this reaction. (a) If excess CaSO4(s) is mixed with water at 25°C to produce a saturated solution of CaSO4, what
asked by Anonymous 
management
examine the impact of one's family background and setting to work place behaviour?
asked by George 
Chemistry
What mass of Cu(IO3)2 can be formed from 0.690g of CuSO45H2O?
asked by Anonymous 
math
the acceleration of an object varies directly as the force f exerted and inversely as its mass m. if the constant of variation is 1 find the acceleration in meters/second^ of a 10 kg object exerting force of 10 newtons
asked by iramae 
Physics
The wheels of a skateboard roll without slipping as it accelerates at 0.45 m/s2 down an 75mlong hill. If the skateboarder travels at 1.8 m/s at the top of the hill, what is the average angular speed of the 2.6cmradius whe els during the entire trip
asked by Anonymous 
Physics
State the reason why a steel sphere resting on a horizontal surface is said to be in neutral equilibrium.
asked by Aliy 
Physics
A balloon is filled with a gas which is lighter than air.it is observed to rise in a air upto a certain height. State a reason why the balloon stops rising.
asked by Aliy 
Math probability
There are 6 gray socks,8 brown socks and 2 blue socks in a drawer.If you remove 2 socks without looking,what is the probability that they are both blue?
asked by Chase 
math
i have only 8 digits and each one is the same. The number that follows me has 9 digits. Who am i?
asked by jabulile 
Maths
Solve Simultaneous Equetion Using Elimination Method: (A)2x  3y= 3 and 3x  7y= 1.
asked by Martin 
math
Truck A can carry 70% more dirt than truck B in the same amount of time. Together both trucks take 6 hours to finish a job. Working at this rate, how many hours would it take truck B to finish the same job?
asked by Oben 
Math
A defective clock is set correctly at 12 nn.However it registers only fifteen mins. for each hr.In how many hr.will it again register the correct time?
asked by Chase 
Math's
Out of 2 dozen orenges.16 were eaten. what fraction of the oranges were eaten?
asked by Shiva 
thermodynamics
what is enthalpy of pure ethly alcohol at 1atm?
asked by bob 
Math
A sausage sample was found to contain 65% moisture, based on fresh weight. The sausage was dried in an oven until its moisture content was 10%. A 2.0 g portion of the dried sausage was extracted with the Soxhlet method to determine the amount of crude fat.
asked by James 
English
1. I don't know. + Who is she? 2. I don't know who she is. 3. I don't know who is she.  #1 can be changed into #2 or #3. Is #3 grammatical? ================================ 4. I know. + What makes you think so? 5. I know
asked by rfvv 
maths
Write down all factors of 18 and 24
asked by Owain 
English
1. We will always wait for you right here on this island where Koreans have lived for a long time.  What is the antecedent of the where clause? a. this island b. right here on this island c. right here ============================
asked by rfvv 
math
each day Ashley practices free throws. The first day she takes 12 shots, and every day after she takes 2 more than the previous day. How many free throws will she shoot on the 6th day. Thank you. =)
asked by Aleah 
Maths
Two cars travel towards each other on a 400 km stretch of road. One car travels 90 km/h and the other at 70 km/h. How long does it take before they pass each other
asked by Jim 
English
1. This is a picture of Tom. 2. This is a picture of Tom's.  Does #1 mean as follows? Tom is in this picture. Does #2 mean as follows? This picture is Tom's. This is a picture which Tom has taken. This picture belongs to
asked by rfvv 
math
Hospitals contain backup generators in case of power failure. A hospital has two backup generators each of which has a 2% probability of failure. Only one generator is needed to supply emergency power. What is the probability that the backup system will
asked by Anonymous 
math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of twelve calculators is sent out containing three defective calculators and nine working calculators. A customer
asked by Anonymous 
English
1. Dokdo was first recorded as part of Korea in the 500s. 2. Dokdo was first recorded as a part of Korea in the 500s.  Can we use both expressions, 'part of' and 'a part of'?
asked by rfvv 
Math
Prove that angle a is equal to angle E if angle D is equal to angle c Science I can't put the picture of the triangle I will try and explain it Two triangles that connect on one angle >< like this but a triangle and the angle in the middle ^ ( the angle
asked by Ali 
Math
At a speed of 15 revolutions per min.,how long will it take a wheel of radius 14 in.,rolling on its edge to travel 440 ft.
asked by Chase 
Math
A quadrilateral has the following vertices: A(2;4) B(42) C(4;3) D(2;1).Determine the coordinates of the enlarged image if the scale factor = 2
asked by Kwanele 
Philosophy
We may observe, that there is no species of reasoning more common, more useful, and even necessary to human life, than that which is derived from the testimony of men, and the reports of eyewitnesses and spectators. This species of reasoning, perhaps, one
asked by Stag 
physics
A variablespeed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration?  rpm/s2
asked by Carly D 
Physics
A Bomber On A Military Mission Is Flying Horizontaly At A Height Of 3000m above the ground at 60km/min,it drops a bomb on a target on the ground,determine the acute angle between the vertical and the line joining the bomber and the target at the instant
asked by Ola 
math
A defective clock is set correctly at 12 nn.However it registers only fifteen mins. for each hr.In how many hr.will it again register the correct time?
asked by iselle 
English
1. I found it convenient to drive a car. 2. I found it convenient that I drive a car. 3. I make it a rule to get up at six. 4. I make it a rule that I get up at six. 5. I believe it useful to buy things on the Internet. 6. I believe it useful that we buy
asked by rfvv 
English
1. I found it necessary that we should try to memorize the passage. 2. I found it necessary to memorize the passage. 3. I made it a rule that I have to brush teeth after eating. 4. I made it a rule to brush teeth after eating. 5. I believe it true that I
asked by rfvv 
Algebra
The sum of a number and 10 is 10
asked by Cynthia 
history/presidents
How many presidential elections has it been since 1936 when Franklin D. Roosevelt was reelected. I believe it's 20, but some of the sites seem to have different answers.
asked by Ginger 
math
At a sports festival half the number of people that chose basketball, chose football. The number of students who chose basketball was a quarter the number of students who chose baseball. There were 84 more students who chose baseball than soccer. How many
asked by andrew 
Chemistry
A 1.00Lgas sample at 1.00degree celsius and 600torr contain 50.0%helium and 50.0%xenon by mass. What are the partial pressure of the individual gasses?
asked by Tiangaydonzo 
mtap
There were 42 mangoes in each crate. Twelve such crates of mangoes were delivered to a factory. Four mangoes were rotten and had to be thrown away. The remaining mangoes were packed into boxes of10 mangoes each. How many boxes of mangoes were there?
asked by french 
math
Find the value of K so that x^25x+k=0 has one root equal to 4.
asked by Math 
math
You are writing multiple choice test. Each question has 5 choices, only one of which is correct. You have no idea how to answer three questions. What is the probability that you will get all three of these questions correct if you guess the answers? Please
asked by Anonymous 
math
If a darkhaired mother and father have a particular type of gene than the probability that any child that they have will be lighthaired is 0.25. What is the probability that all three children will have light hair? Thanks.
asked by Anonymous 
Algebra 2
Express log A in terms of the 2 logarithms of prime numbers: A= (sqrt(3)*sqrt4(125))/7^3
asked by Anonymous 
PLease Help Math Sets
The 130 consumers were asked about their buying preferences concerning another product that is sold in the market under three labels. The results were 12 buy only those sold under label A. 24 buy only those sold under label B. 27 buy only those sold under
asked by Kal Jay 
Science chemistry
Does hydrogen borate conduct electricity? We were told to search this up but I can't find it online and my class never did a lab on it.
asked by Zubaida 
Science chemistry
Also. If you are given the conductivity of an unknown chemical, what the blue and red litmus paper change into when you check the chemical. And the pH level and solution type. How do you know the solution name and formula? I never learned how to find the
asked by Zubaida 
Math
The country hall charges a rental fee of $1000 and at least $3000 for food. Olivi is planning a class reunion. If she had chosen a buffet that costs $38.56 per person what is the minimum possible number of people who must attend to support the expense?
asked by Sierra 
Sets
Let A, B, and C be subsets of a universal set U and suppose n(U)=100, n(A)=30, n(B)=30, n(C)=32, n(A∩B)=9, n(A∩C)=10, n(B∩C)=14, and n(A∩B∩C)=5. Compute n(Ac∩Bc∩Cc) c. 70 64 39 14 10 89 I dont understand this. Please help. Thank you.
asked by Kal Jay 
Science chemistry
Also. If you are given the conductivity of an unknown chemical, what the blue and red litmus paper change into when you check the chemical. And the pH level and solution type. How do you know the solution name and formula? I never learned how to find the
asked by Zubaida 
Please explain (Math)
Let A and B be subsets of a universal set U and suppose n(U)=210, n(A)=100, n(B)=60, and n(A∩B)=30. Compute n(Ac∩Bc). 80 150 100 90 180 200 Please help. Thank you
asked by Kal Jay 
Math
A radioactive material has a half life of 500 years. A) Given 20 grams of this material, how much will remain after 1,000 years? B) Given 100 grams of this material, how much will remain after 750 years? Thank you to whom ever can help me :)
asked by Milly 
Math
Mr. Abernathy purchased a selection of wrenches for his shop. The total cost was $78. He bought the same number of $1.50 and $2.50 wrenches, and half that many $4 wrenches. The number of $3 wrenches was one more than the number of $4 wrenches. How many of
asked by Anoymous 
English
Hi, I really need help on two questions for the novel called 'In the heat of the night! Here's the questions btw its chapter three In the chapter 1 and 2, the racial issue has been hinted. Now we sees clear indication that this issue will be a major item
asked by Sarah Smiuth 
Englush
Hi again, I have another question for the novel 'in the heat of the night' for chapter three. Here it is , Give the significance of the following, 'That's what he's got a shirttail for.' 'Like I said, Virgil, we know our business down here. Go home.' if
asked by Sarah Smiuth 
Chemistry
102.0 MHz (typical frequency for FM radio broadcasting) Express your answer using four significant figures.
asked by Chelsea 
Chemistry
Does group 18 elements soluble in organic solvents such as tetrachloromethane or alcohol
asked by Husler 
physics
A ham sandwich consists of one slice of ham (9 grams) and two slices of bread (25 grams each). You have 1 kg of ham and 1.2 kg of bread. You make as many sandwiches as you can. How many sandwiches did you make? 1) How many sandwiches did you makd? 2) What
asked by Lisa 
physics
Given that 1 g of hydrogen combines completely with 8 g of oxygen to form water, how much water can you make with 10 g of hydrogen and 24 g of oxygen?
asked by Beth 
Trigonometry
The angle of depression from the top of a lighthouse across the street is 65 degrees. the angle of depression from the top of the lighthouse to the top of a house is 28 degrees. the distance from the lighthouse to the house is 37 feet. what is the height
asked by Lilly 
Physics
Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value
asked by George 
Math
Ron is tiling a countertop. He needs a place 54 squarrs tiles in each of the 8 rows to cover the counter. He wantd to randomly place 8 groups of 4 blue tiles and have the rest of the tiles be white. How many white tiles will Ron need?
asked by Charissa 
Math
Ashley made an pie with a diameter of 25 cm. She cuts the pie into 6 equal slices. What is the area of each pie?
asked by Ashley 
1 MATH QUESTION
When using the midpoint formula, what is different between a number line and a coordinate plane?
asked by Anonymous 
Statistics
The Citiburg Parks Department has just installed 1100 new lightbulbs with an expected mean lifespan of 64 months and a lifespan standard deviation of 8 months. Assuming normally distributed bulb failure, how many bulbs will need to be replaced after 49
asked by Jen 
Math
A professor at a school of Architecture designed an asymmetrical Aframe house pictured below. The included angle between sides AB and CB, which measure 30.96 ft and 17.78 ft, respectively, measures 67 degrees. Find the length of side AC.
asked by MAT 
physics
What is true about microscopic properties of an object? 1) They are just small versions of the macroscopic properties. 2) They are the properties of particles that make up the object. 3) They are the average of many properties of individual particles. 4)
asked by Heather 
Science
Identifying the cause of any problems in a design is called____.
asked by Anonymous 
Calculus
Determine an upper/lower estimate for the area under the curve f(x) = cos x between x = 0 and x = pi/2 . Show how you arrive at this estimate. This is the question that my teacher wanted us to answer and I'm not sure how to even start the process. Should I
asked by Mia 
math
Dan fenced a rectangular piece of land measuring 15 m and 31 m. He used six strands of wire, leaving a space of 5 m for the gate. What was the total length of the wire used?
asked by kgk 
Science
Identifying the cause of any problems in a design is called _____. A. Patenting B. Brainstorming C. Prototyping D. Troubleshooting is the answer D?
asked by Anonymous 
Math
A marine surveyor uses a rangefinder and a compass to locate a ship and an island in the vicinity of the coast on which she stands. The rangefinder indicates that the island is 379 ft from her position and the ship is 600 ft from her position. Using the
asked by jose 
physics
A volume of 140 cm3 of an ideal gas has an initial temperature of 20°C and an initial pressure of 1 atm. What is the final pressure if the volume is reduced to 120 cm3 and the temperature is raised to 40°C?
asked by Sue 
Math REALLY NEED HELP
1. nineteen thousand, one hundred fortytwo millionths was the first guess. the second guess was eight thousand, five hundred fortyone hundredthousandths. which was greater and by how much? 2. They were happy because 80 of the people could be seated
asked by Deathfromabove 
Math
A runner competes in a 6 mile race. The year befoere her speed was 3mph slower and it took her one hour longer. What was her speed this year. Please help me by showing all work, Thank you
asked by Carol 
Chemistry
To what volume must 10ml of 5M HCl be diluted to make a 0.5M HCl solution......???? A.1ml B.50ml C.100ml D.500ml E.1000ml
asked by Sawera 
Math
1. Determine the total number of arrangements of three or four toys from a basket of eight different toys.
asked by Instantaneous 
Discrete Math
In roulette, a wheel with 38 numbers is spun. Of these, 18 are red, 18 are black, and 2 are green. The probability that when the wheel is spun it lands on any particular number is 1/38. a) What is the probability that the wheel lands on a red number? b)
asked by Christopher 
Science
Identifying the cause of any problems in a design is called _____. A. Patenting B. Brainstorming C. Prototyping D. Troubleshooting is the answer D?
asked by Anonymous 
algebra 1
Susie wants to have at least a 90 average for the year in her Algebra class. Her current test scores are 85, 100, 86, and 97. What does she need to score on her fifth test to have at least a 90 average?
asked by Grace 
Science
Cost is an example of _____ in designing a product. A. a constraint B. a solution C. a tradeoff D. an idea is the answer A?
asked by Anonymous 
Math
Half of the product of three numbers
asked by Mayaad 
math
When a situation can be modeled by a linear equation, what information do you need in order to find an equation?
asked by Carly 
Computer Science, Hardware
1.) If each stage is 1 clock cycle, calculate the number of clock cycles to execute a code stream of 10 instructions in a nonpipelined (i.e. sequential) fashion? 2.) Repeat part 1, assuming the instructions are executed in a pipelined fashion. Would this
asked by Dio 
math
The number has 6 digits. The nuber is less than 300000. 10 is a factor of the number. The hundred thousands and ten thousands digit are the same and are odd. The tens digit is a cube number and is one more than the thousands digit. The sum of the hundreds
asked by sania 
Chemistry
The specific rotation of pure enantiomer is known from the literature to be 20. The measured value of a solution containing A plus its enantiomer B (specific rotation must be +20) is 40. What is the ee (enantiomer excess) of this sample?
asked by Sarah 
math
Find the values of the trigonometric functions of t from the given information. tan(t) =1/9 terminal point of t is in Quadrant III sin(t)= cos(t)= csc(t)= sec(t)= cot(t)=
asked by Z 
math
An airplane leaves Atlanta at 2 PM and flies north at 250 miles per hour. A second airplane leaves Atlanta 30 minutes later and flies north at 280 miles per hour. At what time will the second airplane overtake the first? Answer Choices 6:20 PM 6:00 PM 6:40
asked by Zara 
math
Three bells toll at intervals of 8 minutes, 15 minutes and 24 minutes respectively. If they toll together at 3 p.m, at what time will they next toll together again?
asked by Anonymous 
ChemistryDr.Bob
The specific rotation of pure enantiomer is known from the literature to be 20. The measured value of a solution containing A plus its enantiomer B (specific rotation must be +20) is 40. What is the ee (enantiomer excess) of this sample?
asked by Sarah 
maths
A bus traveled from LA to CA. It covered 115 km in the first one and a half hour and the remaining 95 km in two and a half hour. What was the average speed in km/h for the whole trip?
asked by Eno 
Physics
Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value
asked by George 
Art
Hundertwasser who was born in December15, 1928 in Austria and died in February19, 2000. What do you think about characteristics of his work?
asked by Jo 
Finance
You want to have $2million in real dollars in an account when you retire in 43 years. The nominal return on your investment in 9.939% and the inflation rate is 3.2%. What is the real amount you must deposit each year to achieve this goal?
asked by VicG 
Calc
Use upper and lower sums to approximate the area of the region using the given number of subintervals (of equal width). (Round your answers to three decimal places.) y = 5/x
asked by Kelly 
Math Compound Interest
If $500 is invested at an interest rate of 4.5% per year, find the amount of the investment at the end of 11 years for the following compounding methods. (Round your answers to the nearest cent.) Find a, Anually Find b, SemiAnually Find c, Quarterly Find
asked by NHick 
Calculus
Use the limit process to find the area of the region between the graph of the function and the yaxis over the given yinterval. f(y) = 7y, 0 ≤ y ≤ 2
asked by Matt 
Calc
Use the limit process to find the area of the region between the graph of the function and the xaxis over the given interval. y = −4x + 6, [0, 1]
asked by Jenna 
Math
Find the area of a path 2 metres wide built around a rectangular pool 10m by 4m.
asked by Anonymous 
Math
2 water tanks are being set up.Each one starts with 100 liters of water.The first tank fills at the rate of 15 liters per min.The second tank fills at the rate of 20 liters per min.When will the first tank contain 7/3 as much as the second tank?
asked by Chase