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Questions Asked on April 3, 2013

a tennis ball is thrown straight up with an initial velocity of 22.5 m/s. it is caught at the same distance above the ground.a).
1. 4 answers
2. asked by confused
3. 17,728 views
why is 1/6 greater than 1/8 but less than 1/3? EXPLAIN
1. 5 answers
2. asked by IRIN
3. 7,761 views
the length of a photograph is 1 cm less than twice the width. the area is 28 cm squared. find the dimensions of the photograph.
1. 1 answer
2. asked by sally
3. 4,296 views
1. Which of the following is a demographic characteristic of an audience?A. Size B. Lifestyle C. Gender D. Values is it C 2.
1. 2 answers
2. asked by Amy
3. 4,129 views
PLEASE HELP!!!(: There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find
1. 7 answers
2. asked by mckayela
3. 3,932 views
Calculate the heat released when 454 g of steam at 100.0C condenses and then cools to 30.0C. State your answer in calories.
1. 3 answers
2. asked by Ray
3. 3,036 views
"Jack has a collection of nickels and quarters. He has a total of 50 coins worth $10.30. How many of each coin does he have?" I
1. 8 answers
2. asked by Joci
3. 3,028 views
A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54;
1. 2 answers
2. asked by Barb
3. 2,852 views
30.0 mL of 0.10 M Ca(NO3)2 and 15.0 mL of 0.20 M Na3PO4 solutions are mixed. After the reaction is complete, which of these ions
1. 1 answer
2. asked by Ash
3. 2,584 views
Draw the hierarchy chart and design the logic for a program that calculates the projected cost of an automobile trip. Assume
1. 3 answers
2. asked by Matt
3. 2,422 views
A golden rectangle is 32 cm long. The ratio of length to width is (1 + sq rt 5)/2. What is the width of the rectangle in
1. 3 answers
2. asked by Jane
3. 2,049 views
A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The
1. 1 answer
2. asked by mulaudzi
3. 2,029 views
Two fair dice, one blue and one red, are tossed, and the up faceon each die is recorded. Define the following events: E : { The
1. 1 answer
2. asked by urgentneedhelp
3. 1,892 views
2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) ΔH° = -1199 kJHow many kilojoules are liberated by the combustion of 56.4 g of
1. 1 answer
2. asked by Victoria
3. 1,892 views
1. Effective public speaking is:A. audience-centered. B. message-centered. C. speaker-centered. D. channel-centered. is it A 2.
1. 3 answers
2. asked by Amy
3. 1,874 views
17. Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally
1. 11 answers
2. asked by Jman
3. 1,833 views
What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions?Condit
1. 2 answers
2. asked by Mark
3. 1,803 views
Evaluate the following expressions. Your answer must be an angle in radians and in the interval [(-pi/2),(pi/2)] .(a)
1. 1 answer
2. asked by Anonymous
3. 1,740 views
At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and
1. 1 answer
2. asked by Anonymous
3. 1,730 views
Triangle Lmn is similar to triangle xyz. Triangle LMN has a side of 5 and 3. The scale factor of triangle Lmn to triangle xyz is
1. 3 answers
2. asked by Bre
3. 1,679 views
Need help with one more question.Which best describes a statistical question? a. a question that contains numbers b. a question
1. 3 answers
2. asked by Brandi
3. 1,626 views
The school parking lot had room for thirty cars. If all the spaces except six were filled, what fraction of the parking lot was
1. 5 answers
2. asked by Anonymous
3. 1,597 views
a rancher has 4000 feet of fencing for constructing a rectangular corral. one side of the corral will be formed by a barn and
1. 1 answer
2. asked by Lufy
3. 1,518 views
what is the implied power expressed by the necessary and proper clause in the constitutiona congress's ability to make laws is
1. 8 answers
2. asked by john
3. 1,503 views
Balance the following redox reaction in acidic and basic solutions:Fe(OH)2(s) + O2(g) --> Fe(OH)3(s) These are the steps my
1. 0 answers
2. asked by Emily
3. 1,473 views
30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be
1. 1 answer
2. asked by Barb
3. 1,455 views
What effect on the molar mass of the unknown acid would each of the followinghave-that is-would it make the calculated molar
1. 1 answer
2. asked by Sean
3. 1,442 views
A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.4 m and its
1. 0 answers
2. asked by Dee
3. 1,409 views
Let R denote the circular region bounded by x^2+y^2 = 36. The lines x=4 and y=3 partition R into four regions R1, R2 ,R3 , and
1. 2 answers
2. asked by Knights
3. 1,399 views
Urgent... Someone please help!!Can someone please check to see if I am doing these correctly, I have a test tomorrow... Thank
1. 0 answers
2. asked by Kishwa
3. 1,280 views
Why does changing the shape of an object have no effect on the density of that object?Because it's still the same item all you
1. 1 answer
2. asked by Jerald
3. 1,264 views
solving problem the chicago public school system has about 680 schools about 130 of the schools will be closed. if the five
1. 1 answer
2. asked by lilly
3. 1,260 views
A board on the wall in Jeremy's class has 4 right angles, 4 equal sides, and 2 pairs of parallel sides. Which quadrilateral is
1. 1 answer
2. asked by Ms.Vargas
3. 1,258 views
Attitudes, beliefs, values, and motivation are characteristics of:A. psychographics. B. demographics. C. the speaker’s
1. 1 answer
2. asked by Amy
3. 1,207 views
1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions?Answer Acid-base reactions involve an
1. 0 answers
2. asked by asap
3. 1,185 views
Which word or phrase is an appositive in the sentence?When Sandy met John—a scientist and critic—she fell in love with him.
1. 6 answers
2. asked by selena
3. 1,182 views
A goat is tethered (tied up) to a stake in the ground with a 5 m rope. The goat can graze to the full length of the rope a full
1. 2 answers
2. asked by Taliea
3. 1,178 views
INFORMATION:Kathy and Bill collided at an intersection. The police learned the mass of the truck is 3200 kg and the mass of the
1. 1 answer
2. asked by Tori
3. 1,164 views
write a program C++ program and Use a recursive function that finds the n-th term using the following rule: tn=3tn-1+12tn-2 .ple
1. 3 answers
2. asked by Riana
3. 1,148 views
Identify the initial value and growth or decay factor in each of the following exponential functions:a) y= 350 x 5^x b) Q= 25000
1. 1 answer
2. asked by kristy
3. 1,116 views
The length of a rectangle is 4m more than the width. The area of the rectangle is 45 m squared. Find the length and width.Please
1. 5 answers
2. asked by suzy
3. 1,098 views
1. When your speech adds to your listeners’ knowledge, it is meant to:A. inform. B. persuade. C. entertain. D. celebrate. is
1. 2 answers
2. asked by Amy
3. 1,066 views
Danny has 75 marbles in red color and blue color. He found out number of red marbles is 15 less than twice of the blue marbles.
1. 1 answer
2. asked by valerie
3. 1,049 views
8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen
1. 1 answer
2. asked by Jeffrey
3. 1,039 views
The sides of a rectangle are in a ratio. What is the length of the shorter sides of the rectangle if its perimeter is 42 cm?
1. 2 answers
2. asked by Anonymous
3. 1,035 views
Calculate the pH of a buffer using dihydrogen phosphate and it's conjugate base. The concentration of weak acid is 0.23 M and
1. 1 answer
2. asked by Anonymous
3. 1,016 views
How many joules of energy are needed to change 275 g of water from 15°C to steam at 100.°C?
1. 1 answer
2. asked by B
3. 1,015 views
1. A speaker talking about the benefits of cosmetic surgery to an audience primarily of women is appealing to which level of
1. 1 answer
2. asked by Amy
3. 1,010 views
The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a
1. 0 answers
2. asked by Evie
3. 986 views
A copper cube, 0.31 m on a side, is subjected to two shearing forces, each which has a magnitude F = 6.40 106 N (see the
1. 1 answer
2. asked by Dee
3. 985 views
What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?
1. 1 answer
2. asked by Amanda
3. 977 views
Superbats, Inc., manufactures two different quality of wood baseball bats, the Wallbanger and the Dingbat. The Wallbanger takes
1. 2 answers
2. asked by kim
3. 962 views
Calculate the pH after 0.010 mol gaseous HCl is added to 250.0 mL of each of the following buffered solutions:a. .050 M NH3/.15
1. 1 answer
2. asked by Kristen
3. 959 views
At 10°C below the melting point of aluminum, 0.08% of the atom sites are vacant. At 484°C only 0.01% are vacant. Given this
1. 2 answers
2. asked by adex
3. 957 views
Rachel cut a length of rope 4 1/3 meters into two pieces. The length of one piece of rope is 2 1/2 meters. What is the length of
1. 7 answers
2. asked by Anonymous
3. 943 views
7. No work is done by gravity on a bowling ball resting or moving on a bowling alley because the force of gravity on the ball
1. 0 answers
2. asked by Anonymous
3. 942 views
1. Which of the following is equivalent to 8 2/5?a.42/5 b.34/5 c.39/5 d.24/5 2. Which of the following fractions is between 3/5
1. 3 answers
2. asked by Adaija
3. 929 views
An activationenergy of 2.0 eV is required to form a vacancy in a metal. At 800°C there is one vacancy for every 10-4 atoms. At
1. 1 answer
2. asked by adex
3. 928 views
the perimeter of a triangle is 79.75 inches. the second side of the triangle is half as big as the first side. the third side is
1. 1 answer
2. asked by chris
3. 925 views
Three machines turn out all the products in a factory, with the first machine producing 40% of the products, the second machine
1. 0 answers
2. asked by Tim
3. 924 views
Maria has a slice of pizza that is 1/6 of the pizza. Ben has a slice of pizza that is 1/3 of the pizza. Maria's slice is bigger.
1. 2 answers
2. asked by Bralyn
3. 911 views
Determine the number of particles in this sample. Identify the unit as a formula unit or a molecule. 58 g of chromium (III)
1. 0 answers
2. asked by Jenny
3. 910 views
1. If a student forms CaCO3 from the presence of carbon dioxide, but continued with the trial anyway, howwould this affect
1. 1 answer
2. asked by Josh
3. 907 views
In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the
1. 0 answers
2. asked by Lyndzey
3. 902 views
A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet
1. 1 answer
2. asked by Bob
3. 894 views
4. A 5.309 g antacid tablet, with CaCO3 as the active ingredient, was mixed was 30.0 mL of 0.831 M HCl.It took 15.3 mL of 0.7034
1. 0 answers
2. asked by Josh
3. 890 views
Operations with radical expressions:Simplify each quotient 7/sq rt 2 - sq rt 3 Please solve and explain how you did it. What do
1. 1 answer
2. asked by Jane
3. 886 views
Find (f°g)(2) when f(x)=5x+9 and g(x)=1/xThanks
1. 0 answers
2. asked by Anonymous
3. 878 views
A student used 5.06g of copper sulphate pentahydrate and salicyclic acid in the performance of the experiment. The student
1. 1 answer
2. asked by damola
3. 868 views
find the sum of each finite arithmetic series 8+9+10+...+15
1. 1 answer
2. asked by Erica
3. 862 views
Three forces act on an object at the same time. F1 = 100. N at 30.0degrees north of east, F2 = 200. N at 45.0degrees north of
1. 0 answers
2. asked by Rosa
3. 862 views
(6p + 4q)(-2p + 9q)simplify help
1. 1 answer
2. asked by ear
3. 859 views
can u help me with a an acrostic poem for nervous system?
1. 1 answer
2. asked by mia
3. 852 views
Calculate the new molarity when 150 mL of water is added to 125 mL of 8.55 M HBr.
1. 0 answers
2. asked by Alex
3. 849 views
Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,
1. 1 answer
2. asked by mathews
3. 842 views
Find the density of a 5.8- solid cylinder that is 15 cm tall with a radius of 5.0 .
1. 1 answer
2. asked by Ericca
3. 838 views
70x-1=10x-70
1. 1 answer
2. asked by Anonymous
3. 817 views
The ground state wavefunction for a particle in a shallow potential well in 1 dimension is of the form: Ae^(−|x|/2d). Given
1. 0 answers
2. asked by qwerty
3. 814 views
At 298 K, deltaGo = - 6.36 kJ for the reaction:2N2O(g) + 3O2(g) ↔ 2N2O4(g) Calculate deltaG (in kJ) at 298 K when PN2O = 3.12
1. 0 answers
2. asked by Anonymous
3. 792 views
by cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an
1. 0 answers
2. asked by sasha
3. 786 views
Some antacid tablets actually contain a mixture of calcium carbonate and magnesium hydroxide (thoughthey usually have the same
1. 0 answers
2. asked by Jim
3. 785 views
A titration is performed by adding 0.124 M KOH to 40 mL of 0.159 M HNO3.a) Calculate the pH before addition of any KOH. b)
1. 1 answer
2. asked by Antonio
3. 776 views
An object at rest begins movinghorizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose,
1. 0 answers
2. asked by Mike
3. 773 views
Over a three-year period, the total interest paid on a $4500 loan was $1620. What was the interest rate?
1. 1 answer
2. asked by Jeconiah
3. 765 views
Use a graph of f(x) = 3 e^{-8 x^2} to estimate the x-values of any critical points and inflection points of f(x). critical
1. 0 answers
2. asked by sam
3. 751 views
Three forces act on an object at the same time. F1 = 10.0 N 50.0degrees north of east, F2 = 15.0 N 25.0degrees south of west,
1. 0 answers
2. asked by Rosa
3. 749 views
Light with λ = 530 nm passes through a single slit and then illuminates a screen 9.0 m away. If the distance on the screen from
1. 1 answer
2. asked by Madison
3. 748 views
I have a few problems I need some help with.The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the
1. 1 answer
2. asked by Jess
3. 748 views
2.00 L of 0.800 M NaNO3 must be prepareds from a solution which 1.50 M in concentration. How many mL of the 1.50 M are required
1. 1 answer
2. asked by Jessica
3. 723 views
A rock is dropped from a riverbank that is 4 feet above the surface of the river. After how many seconds does the rock hit the
1. 1 answer
2. asked by Mary
3. 719 views
The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from
1. 0 answers
2. asked by B
3. 711 views
Name a few pharmacopoeias.
1. 0 answers
2. asked by Wube
3. 705 views
How do you find the exact value of cos -7pi/12 without using a calculator to change radian to degree
1. 1 answer
2. asked by Anonymous
3. 704 views
How do you calculate the standard enthalpy change for the reaction of an aqueous solution of barium hydroxide, Ba(OH)2, with an
1. 0 answers
2. asked by Lisa
3. 699 views
A 1.2kg object is placed on a frictionless table and is attached to a hanging mass using a light string over a frictionless
1. 1 answer
2. asked by maddi
3. 698 views
(c+x)squared----------------- 2y c= -8 x= 10 y= 6
1. 1 answer
2. asked by Joel
3. 697 views
T and S share a digital music player that randomly selects songs to play.Together T and S have loaded 3476 songs. T and S want
1. 0 answers
2. asked by Nabil
3. 683 views
you are looking for a safe place to put 30,000.00 for one yr. Bank A offers 2.46% interest rate continuously. Bank B offers
1. 2 answers
2. asked by Kat
3. 662 views
Sorry for bugging you guys..But can someone proof read this paragraph. Ohio Sen. Rob Portman is the first Republican senator to
1. 1 answer
2. asked by Blaze
3. 653 views
The median of the following incomplete frequency distribution is 10:x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2
1. 0 answers
2. asked by anoynomous
3. 652 views

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