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2011
March

Questions Asked on March 1, 2011

Show that the equation x^3-15x+c=0 has at most one root in the interval [-2,2].
1. 3 answers
2. asked by bill
3. 6,158 views
Surprisingly, very few athletes can jump more than 2.0 ft (0.62 m) straight up. Use d = 1/2 gt2 and solve for the time one
1. 2 answers
2. asked by claire
3. 5,962 views
Question:The height in feet above the ground of an arrow t seconds after it is shot can be modeled by y = -16t(squared) + 63t +
1. 5 answers
2. asked by Kai
3. 4,611 views
Chris eats 3 slices of a pizza that is cut into 8 equal slices. What percentage of the pizza does he eat?
1. 2 answers
2. asked by jackie
3. 4,045 views
The probability that a football game will go into overtime is 20%. What is the probability that two of three football games will
1. 3 answers
2. asked by Stephanie
3. 3,518 views
Explain why the following command would create an error, and what changes could be made to fix the error.SELECT V_CODE,
1. 2 answers
2. asked by ben
3. 3,409 views
Determine how many milliliters of 0.102M NaOH solution is needed to neutralize 35.0mL of 0.125M H2 SO4 solution.
1. 2 answers
2. asked by jane
3. 3,017 views
Round 10 2/3 to the nearest whole number?
1. 11 answers
2. asked by mia
3. 2,918 views
A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys
1. 3 answers
2. asked by jackie
3. 2,680 views
Write a balanced chemical equation for the overall cell reaction represented as:a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b)
1. 3 answers
2. asked by Jazmin
3. 2,564 views
write a rule for nth term:1/10, 3/20, 5/30, 7/40,.... i think the next term is 9/50 but i don't know how i got that
1. 1 answer
2. asked by Amanda
3. 2,528 views
The probability that a house in an urban area will develop a leak is 5%. If 82 houses are randomly selected, what is the
1. 2 answers
2. asked by megan
3. 2,430 views
If you prepared a solution by adding 0.05mL (1drop) of 0.5M HCL to 5 x 10^7 mL of "pure" water. Calc the resultant PH. The
1. 1 answer
2. asked by Jake
3. 2,411 views
Determine the equations of two lines that pass through the point (1, -5) and are tangent to the graph of y = x^2 - 2.
1. 5 answers
2. asked by gt
3. 2,354 views
HELP! I need to know if I am getting the right equation for the oxidation reaction of cyclohexene and potassium permanganate?I
1. 1 answer
2. asked by Lizzy
3. 1,980 views
find the equation of a quadratic function whose graph is tangent at x=1 to the line whose slope8, tangent at x=-2 to solve the
1. 2 answers
2. asked by erika
3. 1,905 views
50ml of water at 46.9 C were mixed with 50ml of water at 25.1 C in a calorimeter also at 25.1 C. The final temperature was 30.1
1. 2 answers
2. asked by venus
3. 1,890 views
Determine the values of a and b for thefunction f (x) = ax^3 + bx^2 + 3x - 2 given that f (2) = 10 and f ′(-1) = 14. Please
1. 1 answer
2. asked by ben
3. 1,881 views
A 56 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11 m, and falls a total of
1. 2 answers
2. asked by Kristie
3. 1,774 views
The opposite angles of a parallelogram are congruent. The adjacent angles are supplementary. If angle X measures 110 degrees,
1. 4 answers
2. asked by Ian
3. 1,760 views
A solution is prepared by dissolving 25.0 g of ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.0 mL
1. 2 answers
2. asked by Anonymous
3. 1,650 views
A pair of dice is cast. What is the probability that the sum of the two number landing uppermost is less than 5, if it is known
1. 2 answers
2. asked by Anonymous
3. 1,618 views
A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently
1. 1 answer
2. asked by Jon
3. 1,603 views
tori wants to increase the tempreature of 500 grams of water from 20 degrees celcius to 100 degrees celecius if the specific
1. 3 answers
2. asked by nikita
3. 1,581 views
Albert Kluyver "From elephant to...bacteria-it is all the same!" What did he mean?
1. 2 answers
2. asked by Stephanie
3. 1,484 views
a karate chop delivers a force of 3000 N to a aboard that breaks. the force that the baord exerts on the hand during this event
1. 2 answers
2. asked by Anonymous
3. 1,464 views
Verify if the given equations are solutions to the differential equation.dy/dt=k(y-a) i) y=1-ae^(kt) ii) y=a+Ce^(kt)
1. 1 answer
2. asked by dyingincalc
3. 1,427 views
I am stuck in exponential growth and decay. Here is an example. Can someone tell me how to do this step-by-step please? Here it
1. 3 answers
2. asked by Miss Trouble :)
3. 1,374 views
gold has a specific heat of 0.130j/g. degrees celcuis if 195 joules of heat are added to 15 grans of gold homw much does the
1. 3 answers
2. asked by nikita
3. 1,349 views
____ is the code of acceptable behaviors users should follow while on the Internet; that is, it is the conduct expected of
1. 1 answer
2. asked by greg
3. 1,323 views
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular
1. 0 answers
2. asked by Anonymous
3. 1,308 views
A simple random sample of size n = 300 is obtained from a population whose size is and whose population size is n=20,000 ans
1. 0 answers
2. asked by jackie
3. 1,304 views
a sliver coin and a gold coin each have a mass of exactly 6.6 grams the specific heat of sliver is 0.235j/g.degrees celcius and
1. 2 answers
2. asked by nikita
3. 1,272 views
Assignment: Currency Conversion Design· Complete the hierarchy chart in Appendix H and the flowcharts in Appendix I, based on
1. 5 answers
2. asked by Kamari Davis
3. 1,266 views
a Frog is at the bottom of a 21 foot well. The frog jumps up 4 feet, and then falls back 2 feet. How many jumps will it take for
1. 4 answers
2. asked by Haley
3. 1,262 views
If A and B are independent events, P(A) = 0.35, and P(B) = 0.55, find the probabilitiesa) P(A intersected B) b) P(A united B)
1. 1 answer
2. asked by sam
3. 1,257 views
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two
1. 1 answer
2. asked by tim
3. 1,250 views
A stone is thrown vertically upward with a speed of 11.0 m/s from the edge of a cliff 80.0 m high. How much later does it reach
1. 1 answer
2. asked by cory
3. 1,236 views
The antiderivative of arctan(4t)dt by integration of parts.
1. 1 answer
2. asked by Kate
3. 1,209 views
100ml solution made up 1.0M NH3 and (NH4)2SO4 have been added with 100ml of 0.1 HCl. how many moles are present in the solution
1. 0 answers
2. asked by gwen
3. 1,206 views
By what amount does the sum of the roots exceed the product of the roots of the equation (x-7)(x+3)=0?I have no idea what to do!
1. 1 answer
2. asked by Mandy
3. 1,205 views
Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 15.5 m/s toward the east and the
1. 1 answer
2. asked by Anonymous
3. 1,204 views
I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is
1. 1 answer
2. asked by Caroline
3. 1,186 views
A door starts from rest and swings with an angular acceleration, alpha, α = 6 rad/s2, where t is in seconds. Determine the
1. 0 answers
2. asked by Anonymous
3. 1,120 views
In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque
1. 0 answers
2. asked by hy
3. 1,099 views
This is an outline that i have to use to find the solution of the question. It involves logarithms and half-angle formulas.I
1. 2 answers
2. asked by Anon
3. 1,072 views
A dockworker loading crates on a ship finds that a 25 kg crate, initially at rest on a horizontal surface, requires a 84 N
1. 0 answers
2. asked by polo Q
3. 1,066 views
why is hydrogen bonding only possible with hydrogen?
1. 2 answers
2. asked by Jackie
3. 1,048 views
Let A and B be events in a sample space S such that P(A) = 0.6, P(B) = 0.4, and P(A B) = 0.27. Find the probabilityP(B|A)
1. 2 answers
2. asked by Anonymous
3. 1,008 views
Four balls are selected at random without replacement from an urn containing three white balls and five blue balls. Find the
1. 1 answer
2. asked by Sam
3. 997 views
according to frederick jackson tuner ,why did english ideas aboutgoverment change when brought to america
1. 2 answers
2. asked by Anonymous
3. 983 views
a 180 lb person climbs a ladder to a point which is two times the radius of the earth high. how much does he weigh there?
1. 0 answers
2. asked by tam
3. 976 views
What is the percentage of 7/8ths?What is the decimal of 7/8ths?
1. 3 answers
2. asked by linda
3. 972 views
A 1300 kg sports car accelerates from rest to 85 km/h in 6.2 s. What is the average power delivered by the engine?
1. 2 answers
2. asked by Kathleen
3. 968 views
Can you check my answers. I actually have been researching this for a couple of days! Which African countries does the equator
1. 1 answer
2. asked by Reed
3. 967 views
You have a 12.01 g sample of carbon. The average mass of a carbon atoms is 1.994 x 1023 g. How many carbon atoms are in the
1. 1 answer
2. asked by Sam
3. 963 views
which preposition is most suitable1)Mraias Zimmer ist______ Dritten Stock 2)Die Wohnung ist_____einem Hochhaus
1. 2 answers
2. asked by vera
3. 960 views
A 67 kg hiker climbs to the top of a 3700 m-high mountain. The climb is made in 5.5 h starting at an elevation of 2800 m.
1. 4 answers
2. asked by Kristie
3. 954 views
Several friends are taking turns flying akite. Each friend flies the kite for the same amount of time.They spend 6 hours flying
1. 6 answers
2. asked by julia
3. 947 views
Phosphoric acid reacts with zinc to produce hydrogen gas and zinc phosphate. How many grams of acid are required to produce 5.3
1. 1 answer
2. asked by Alex
3. 945 views
'I might' a thought of that closet. Correct this sentence
1. 2 answers
2. asked by larsong
3. 943 views
what is the human life cycle
1. 1 answer
2. asked by jane
3. 911 views
why is hydrogen bonding inly possible with hydrogen?
1. 1 answer
2. asked by Jackie
3. 910 views
In Classical conditioning the response is typically_______, whereas in operant conditioning the response_______ the environment.
1. 1 answer
2. asked by Rena
3. 910 views
Show that the equation x^3-15x+c=0 has at most one root in the interval [-2,2].Perhaps Rolle's Theorem, Mean Value Theorem, or
1. 1 answer
2. asked by William
3. 908 views
Use Trig identities to verify that sec^4(x)-tan^4(x)=1+2tan^2(x), Only work with one side of the equation
1. 1 answer
2. asked by Anonymus
3. 908 views
can u help me get a better understanding of why freedom of speech allows a variety of pop culture media to be released.
1. 1 answer
2. asked by Kalei
3. 901 views
for the polynomial, list each real zero and its multiplicity. determine whether the graph crosses or touches the x-axis at each
1. 2 answers
2. asked by albert
3. 895 views
Two planes depart from the same airport at the same time. One hour later one of the planes is 480 miles due north of the airport
1. 2 answers
2. asked by Lo
3. 879 views
What are the differences between ionic bonds and covalent bonds?
1. 2 answers
2. asked by Jackie
3. 878 views
Anne is planning to attend college when she graduates from high school in 7 years from now. She anticipates that she will need
1. 2 answers
2. asked by sue
3. 866 views
find the equation of a quadratic function whose graph is tangent at x=1 to the line whose slope8, tangent at x=-2 to solve the
1. 1 answer
2. asked by erika
3. 860 views
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole.
1. 0 answers
2. asked by Matt
3. 857 views
A uniform door (0.81 m wide and 2.1 m high) weighs 150 N and is hung on two hinges that fasten the long left side of the door to
1. 1 answer
2. asked by lina
3. 853 views
A temperature of 41 degrees F is equivalent to 278.2 degrees K, while a temperature of 86 degrees F is equivalent to 303.2
1. 0 answers
2. asked by bianca
3. 847 views
using the vertical motion model h=-16t + vt + sYou and a frine are playing basketball. you can jump with an initial velocity of
1. 1 answer
2. asked by Florence
3. 839 views
A ball rebounds 7/8ths as high as it bounced on the previous bounce and is dropped from a height of 8 feet. How high does it
1. 1 answer
2. asked by Kimberly
3. 839 views
A 1550 kg automobile has a wheel base (the distance between the axles) of 3.00 m. The center of mass of the automobile is on the
1. 0 answers
2. asked by Skye
3. 837 views
I'm really bad at these, can someone help me PLEASE?1. Name the property shown by the statement: 9x + 0 = 9x a. Commutative
1. 3 answers
2. asked by Cheryl
3. 826 views
Confused on permutation or combination on this question:A VISA credit card has a first digit of 4 followed by 15 other digits.
1. 2 answers
2. asked by marco
3. 826 views
I need help with the DQ 2week 2. Could someone help me please?
1. 1 answer
2. asked by Ashley
3. 818 views
For the sequence, describe the pattern, write the next term, and write a rule for the nth term.2/3,4/4,6/5,8/6,...
1. 1 answer
2. asked by Pedro
3. 818 views
An object falling under the pull of gravity is acted upon by a frictional force of air resistance. The magnitude of this force
1. 1 answer
2. asked by polo Q
3. 815 views
A 1.04L sample of gas at 759 mm Hg pressure is expanded until its volume is 2.24L. what is the pressure in the expanded gas
1. 1 answer
2. asked by naseeb
3. 812 views
there are 80 students in a math class.20% of the students in the class scored above 50 marks in the test. what is the average of
1. 1 answer
2. asked by chisom
3. 806 views
Show that the equation x^3-15x+c=0 has at most one root in the interval [-2,2].Perhaps Rolle's Theorem, Mean Value Theorem, or
1. 1 answer
2. asked by William
3. 802 views
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3740-kg space tug and a
1. 1 answer
2. asked by lizz
3. 794 views
Find, to the nearest tenth of a centimeter, the length of a diagonal of a square if the measure of one side is 8.0 centimeters.
1. 3 answers
2. asked by Timothy
3. 792 views
how do would I round 4.3215 to the nearest thousand.
1. 2 answers
2. asked by sadie
3. 792 views
A bullet of mass 3.2 g strikes a ballistic pendulum of mass 3.6 kg. The center of mass of the pendulum rises a vertical distance
1. 1 answer
2. asked by RD
3. 789 views
Show that the equation x^3-15x+c=0 has at most one root in the interval [-2,2].
1. 1 answer
2. asked by Anonymous
3. 768 views
Jose, whose mass is 75 kg, has just completed his first bungee jump and is now bouncing up and down at the end of the cord. His
1. 0 answers
2. asked by Colin
3. 765 views
If an 80-kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?
1. 1 answer
2. asked by Cher
3. 754 views
Basic Geometry1. Find the perimeter of a rectangle 19 cm long by 27.8 cm wide. 2. In triangle ABC, angle A = 47°, and angle B =
1. 1 answer
2. asked by shirley
3. 747 views
Are these examples of elastic/inelastic supply products correct?Plane tickets: A plane ticket is an example of inelastic supply.
1. 1 answer
2. asked by David
3. 740 views
The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and
1. 2 answers
2. asked by ashley
3. 731 views
triangles ABC and XYZ are congruent. Angle A is one half the size of angle B. Angle Y is 90 degrees. Angle C and angle Z are
1. 1 answer
2. asked by Nana
3. 729 views
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two
1. 0 answers
2. asked by tim
3. 728 views
Write a balanced chemical equation for the overall cell reaction represented as:a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b)
1. 0 answers
2. asked by Jazmin
3. 726 views
The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of
1. 1 answer
2. asked by ashley
3. 721 views

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