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Questions Asked on June 17, 2013

The densities of three solutions with known concentrations ( 20% , 50%, and 70%), and one unknown solution were determined. If
1. 2 answers
2. asked by alayna
3. 4,016 views
In first gear, or low gear, an automobile's engine runs about three times as fast as the drive shaft. In second gear, the engine
1. 3 answers
2. asked by bob
3. 3,228 views
The volumes of two cylindrical cans of the same shape vary directly as the cubes of their radii. If a can with a six-inch radius
1. 2 answers
2. asked by sandricka
3. 2,566 views
2. For a distribution of scores, which of the following Z score values represents the location closest to the mean?
1. 1 answer
2. asked by Luah
3. 2,533 views
One white marble, two blue marbles, and three red marbles were in a bag. One marble was drawn from the bag and then put back.
1. 1 answer
2. asked by cici
3. 2,263 views
Find cos(A+B).cos A=1/3 and sin B=-1/2, with A in quadrant I and B in quadrant IV.
1. 2 answers
2. asked by tony
3. 2,221 views
PLEASE HELP !!!A mason is putting in the foundation for a wall. His assistant digs a trench in roughly the shape of a
1. 3 answers
2. asked by Stacey
3. 2,165 views
3. A telephone company wants to estimate the porportion of households that would purchase an additional service line if it were
1. 2 answers
2. asked by Anonymous
3. 1,896 views
A mason's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. What
1. 1 answer
2. asked by Stacey
3. 1,852 views
Electricity bills in a certain city have mean $120.08. Assume the bills are normally distributed with standard deviation $14.40.
1. 1 answer
2. asked by Anonymous
3. 1,844 views
For the following reaction in acidic solution.Cr2O7^2- + I- ---> Cr^3+ + IO3- Give the total balanced net ionic equation.
1. 2 answers
2. asked by Annie
3. 1,688 views
The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean 43 and standard
1. 1 answer
2. asked by Anonymous
3. 1,637 views
How many milliliters of 2.00 M HCl(aq) are required to react with 7.55 g of an ore containing 36.0% Zn(s) by mass?
1. 1 answer
2. asked by Jessica
3. 1,493 views
A hot water heater measures 20" in diameter. What is the area of a metal base for the water heater, assuming a two-inch overhang
1. 1 answer
2. asked by Stacey
3. 1,487 views
Cypress Oil Company's December 31, 2013, balance sheet listed $645,000 of notes receivable and $16,000 of interest receivable
1. 1 answer
2. asked by joyCypre
3. 1,452 views
The Smiths want to buy a 9 ft. by 12 ft. carpet and center it in a 15 ft. by 20 ft. room.What is the area of the carpet?
1. 2 answers
2. asked by tiffany
3. 1,442 views
Carlos Molly and Simon had to share $100.Molly had 3 times as much money as Simon. Carlos had 2 times as much money as Molly.
1. 4 answers
2. asked by Marsha
3. 1,384 views
A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15.(a)
1. 0 answers
2. asked by Sue 76
3. 1,326 views
Two balls are drawn from a bag with 4 black balls and 2 white balls. Find th probability distribution got drawing 2 black balls.
1. 1 answer
2. asked by Ericka
3. 1,325 views
Determine the theoretical and percent yield of hydrogen gas if 80.5 g water undergoes electrolysis to produce hydrogen and
1. 1 answer
2. asked by Ben
3. 1,295 views
A rectangular box is to have a square base and a volume of 20 ft3. If the material for the base costs 37¢/square foot, the
1. 1 answer
2. asked by Anonymous
3. 1,234 views
A survey of 90 families showed that 40 owned at least one gun. Find the 95%confidence interval of the true proportion of
1. 2 answers
2. asked by Jodene
3. 1,230 views
Find all angles in degrees that satisfy the equation. Round approximate answers to the nearest tenth of a degree.tan α = -1.85
1. 1 answer
2. asked by tony
3. 1,202 views
The physical education teacher marked off a triangular section of the gym to play a game. Two of the triangle's sides were 7
1. 1 answer
2. asked by Anonymous
3. 1,181 views
Use a sum or difference identity to find the exact value.tan 25deg + tan 5deg / 1-tan 25deg tan 5deg
1. 1 answer
2. asked by tony
3. 1,179 views
Suppose a car is traveling at +24.1 m/s, and the driver sees a traffic light turn red. After 0.366 s has elapsed (the reaction
1. 1 answer
2. asked by louis aaaaa
3. 1,107 views
In an urn, there are several colored balls, with equal numbers of each color. We add 14 balls which are all of the same new
1. 2 answers
2. asked by jack
3. 1,084 views
One of your friends was the victim of a crime committed by a new immigrant to the country. Now She is intolerant of any children
1. 1 answer
2. asked by Annoymous
3. 1,068 views
which of the following percents can also be expressed as a mixed number?a.310% b.49% c.7.4% d.0.001%
1. 3 answers
2. asked by babyc36
3. 1,044 views
Susan' s test scores for social studies are 81,76,73,and 79. what is her average score?
1. 2 answers
2. asked by Sinda
3. 1,031 views
If an object is thrown in an upward direction from the top of a building 160 ft high at an initial speed of 30 mi/h, what is its
1. 1 answer
2. asked by Isis
3. 1,018 views
1. Why don't we take a tennis?- Sounds good. 2. Why don't we take a tennis lesson? - Sounds good. 3. Why don't we take a tennis
1. 1 answer
2. asked by rfvv
3. 1,010 views
The quantity demanded each month of the Sicard wristwatch is related to the unit price given by the equation below, where p is
1. 0 answers
2. asked by Anonymous
3. 968 views
Find all values of ¸ in [0°, 360°) that satisfy the equation.2 sin 2θ - √(3) = 0
1. 1 answer
2. asked by tony
3. 951 views
In 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
1. 1 answer
2. asked by Ndumy
3. 936 views
A jogger accelerates from rest to 5.64 m/s in 3.36 s. A car accelerates from 24.6 to 39.8 m/s also in 3.36 s. (a) Find the
1. 2 answers
2. asked by louis aaaaa
3. 931 views
. You are the accountant for Suite Dreams, a retail furniture store. Recently, an order of sofas and chairs was received from
1. 0 answers
2. asked by keionna
3. 928 views
âˆš(5x-4) = 7 - âˆš(13-x)before we do anything, remember we cannot take the square root of a negative so, 5x-4â‰¥0 and
1. 1 answer
2. asked by Test
3. 900 views
Copper reacts with silver nitrate according to the equation: Cu(s) + 2AgNO3(aq)= Cu(NO3)2(ag) +2Ag(s). If 0.50mol of copper is
1. 0 answers
2. asked by Tersia Malatji
3. 900 views
If 600 bricks measuring 12" by 18" are required to build a wall 10 ft. high (one brick thick), how long is the wall?
1. 1 answer
2. asked by Bria S.
3. 882 views
show an example of an user inputs a list of positive numbers terminated by 0 into an array, find the mean of the numbers in the
1. 1 answer
2. asked by jackie
3. 881 views
The management of the UNICO department store has decided to enclose a 917 ft2 area outside the building for displaying potted
1. 2 answers
2. asked by Anonymous
3. 873 views
A woman on a bridge 81.6 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an
1. 1 answer
2. asked by louis aaaa
3. 856 views
solve physics question. a train moves 3.6km from rest to rest in 3minutes. the greatest speed is 90km/h, and the acceleration
1. 1 answer
2. asked by Anonymous
3. 849 views
Franky claims he has a mass of 65kg. He is sitting on a spherical bouy that�oats just barely submerged under water. When he gets
1. 0 answers
2. asked by Q
3. 841 views
An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up
1. 1 answer
2. asked by louis aaaa
3. 830 views
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off,
1. 0 answers
2. asked by Anonymous
3. 824 views
what is meant by liquefaction of gases? can hydrogen be liquefied by compression at the temperature of liquid air?
1. 0 answers
2. asked by uche
3. 822 views
What is the factored form of 6x^4-21x^3-12x^2 ?
1. 2 answers
2. asked by Casey
3. 822 views
Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from
1. 1 answer
2. asked by keionna
3. 820 views
A chicken decides to cross a road. The road is perfectly straight, runs north-south, and is full of cars driving by from south
1. 3 answers
2. asked by phys
3. 813 views
For the following reaction in acidic solution.Cr2O7^2- + I- ---> Cr^3+ + IO3- give the balanced half reduction reaction.
1. 2 answers
2. asked by Annie
3. 788 views
Find the overall average speed of swimmer number one during the race.Find the overall average speed of the second swimmer from
1. 0 answers
2. asked by bittubeniwal
3. 776 views
Two soccer players start from rest, 33 m apart. They run directly toward each other, both players accelerating. The first
1. 1 answer
2. asked by louis aaaaa
3. 775 views
What is the acceleration of a tennis ball if initially it comes toward the player's racquet at 20 m/s, and it leaves in the
1. 1 answer
2. asked by bittubeniwal
3. 775 views
You need to fill a football with air to play with it. You know that your pump expels air at 10 ft/s. The needle of your pump has
1. 0 answers
2. asked by Aaron
3. 757 views
Sketch a graph of the parabola y=x^2+3. On the same graph, plot the point (0,−6). Note there are two tangent lines of y=x2+3
1. 2 answers
2. asked by Robin
3. 757 views
Describe how to prepare a 0.0100M Solution of oxalate using solid sodium oxalate and a 500mL volumetric flask and water.
1. 1 answer
2. asked by Jessica
3. 743 views
Simone rented a truck to move to a new apartment last month. The rental company charges a rental fee of $25.00 plus $0.50 per
1. 1 answer
2. asked by lucy
3. 730 views
One of your friends was the victim of a crime committed by a new immigrant to the country. Now She is intolerant of any children
1. 1 answer
2. asked by Annoymous
3. 726 views
A homeowner empties her hot water heater every 36 days and changes the filter in the heat pump every 48 days. She did both on
1. 1 answer
2. asked by Julia
3. 725 views
0.125g of sodium dichromate is to be reacted wtih 0.025M potassium iodide. How many mLs of the potassium iodide solution will be
1. 1 answer
2. asked by Jessica
3. 716 views
A circuit is composed of a capacitor C=3 μF, two resistors both with resistance R=69 Ohm, an inductor L=6.00e-2 H, a switch S,
1. 1 answer
2. asked by AAA
3. 716 views
By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an
1. 1 answer
2. asked by Anonymous
3. 698 views
Light from a coherent monochromatic laser of wavelength λ=2.29e-4 m is incident on two slits, both of width a, separated by a
1. 1 answer
2. asked by AAA
3. 688 views
An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 9.80 m/s in 3.10
1. 1 answer
2. asked by louis aaaaa
3. 685 views
A trapeze artist swings from one 35-ft long trapeze to another trapeze. She releases one trapeze at a 30 degree angle relative
1. 2 answers
2. asked by Joe
3. 678 views
A pellet gun is fired straight downward from the edge of a cliff that is 27.1 m above the ground. The pellet strikes the ground
1. 1 answer
2. asked by louis aaaa
3. 674 views
I am thinking of some #s less than 100. When I divide them by 2 there is a remainder of 1. When I divide them by 3 there is a
1. 2 answers
2. asked by Kelly
3. 674 views
a car depreciates in by avalue of $1000 per year. The original value of the car is $30,000. Let V(x) be the value of the car in
1. 1 answer
2. asked by kirk
3. 665 views
I = E/RA car has a 12 volt battery. The engine has a resistance of 0.22 ohms. How many amps will be drawn from the battery when
1. 1 answer
2. asked by bob
3. 663 views
What is the sum of all possible positive integer values of n, such that n^2+19n+130 is a perfect square?
1. 0 answers
2. asked by jack
3. 662 views
using buttons of different colours ,find the solution of 5x-6=9
1. 1 answer
2. asked by abhigyan
3. 661 views
Find all real numbers in [0, 2π) that satisfy the equation.cos 2x = √(2)/2
1. 1 answer
2. asked by tony
3. 660 views
The sum of 3 consecutive terms of an arithmetic sequence is 165. The second of these terms is 11 times the first. Find the 3
1. 1 answer
2. asked by Alice
3. 651 views
The distance between the front wheels of a model car is 4.5 centimeters. What is the actual distance of the car if the scales is
1. 1 answer
2. asked by Billie
3. 646 views
Liquid elemental iron is produced in the thermite reaction because enough heat is generated to melt the iron:2 Al(s) +
1. 0 answers
2. asked by Dennis
3. 645 views
CRITICAL THINKING: Witout grouping symbols,the expression 2.3³+4 had a value of 58.Insert grouping symbols in the expression
1. 1 answer
2. asked by rhove
3. 642 views
(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 11.3 m/s when going
1. 1 answer
2. asked by louis aaaaa
3. 641 views
Can someone please double check my answers (My answers are in Capital)1. If you produce a million products a day and you want to
1. 1 answer
2. asked by mysterychicken
3. 635 views
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.42×105 , its speed is 28.0 ,
1. 0 answers
2. asked by Ailorra
3. 631 views
A motorcycle has a constant acceleration of 4.06 m/s2. Both the velocity and acceleration of the motorcycle point in the same
1. 2 answers
2. asked by louis aaaaa
3. 614 views
Can I please get my answers double checked?True or False 1. The tangent function is used to find the angel between two vectors.
1. 4 answers
2. asked by mysterychicken
3. 602 views
1.Mark makes Php 40.00 per hour if he works 40 hours or less.If works overtime,he makes an additional Php 5.00 per hour as
1. 2 answers
2. asked by rhove
3. 600 views
A 50 kg piston with a radius of 50 cm floats on a cylinder that is filled with air. The air in the cylinder fills the entire
1. 0 answers
2. asked by Anonymous
3. 597 views
the distance between two successive crests in waves is 1.50m, and the source generates 25 crests and 25 troughs in 5.00sec. what
1. 0 answers
2. asked by Riana
3. 588 views
A thin massless horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located
1. 3 answers
2. asked by Anonymous
3. 581 views
Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation
1. 3 answers
2. asked by Sue 7
3. 575 views
During a head on car crash, the car is designed to slow down as its front end crumples. If a person can survive an acceleration
1. 1 answer
2. asked by Alison
3. 571 views
Alejandro is the manager of a catering business for private parties. The business charges a set-up fee of $40.00 per event and
1. 1 answer
2. asked by lucy
3. 570 views
0.125g of sodium dichromate is to be reacted wtih 0.025M potassium iodide. How many mLs of the potassium iodide solution will be
1. 2 answers
2. asked by Annie
3. 569 views
On May 23, Samantha Best borrowed $40,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact
1. 2 answers
2. asked by d.j.
3. 561 views
A cement block accidentally falls from rest from the ledge of a 51.5 -m-high building. When the block is 12.9 m above the
1. 1 answer
2. asked by louis aaaa
3. 561 views
Sam's sister lives 100 miles away. Sam drove 50 mph for 1/2 hr toward his sister's house. How much farther must Sam travel to
1. 1 answer
2. asked by luz
3. 556 views
1. If the mean is 40 in a normal distribution, what is the median?
1. 1 answer
2. asked by Rey
3. 544 views
A thin, massless, horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure.A small bug,
1. 0 answers
2. asked by g
3. 538 views
the length of one board is 2feet10inches,and the length of another board is1yard1foot9inches.what is the total length of the
1. 9 answers
2. asked by babyc36
3. 538 views
Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M
1. 1 answer
2. asked by Annie
3. 535 views
What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric
1. 0 answers
2. asked by Dennis
3. 534 views
A herd of wildebeests led by Roger is charging down the hall on the way to lunch. They start out at 10 m/s and accelerate at a
1. 3 answers
2. asked by Alison
3. 533 views

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