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Questions Asked on April 7, 2013

A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the
1. 2 answers
2. asked by Becky
3. 9,664 views
Solve 8sin(pi/4x) = 6 for the four smallest positive solutionsGive your answers accurate to at least two decimal places, as a
1. 4 answers
2. asked by Anonymous
3. 7,967 views
If the rational function y = r(x) has the vertical asymptote x = 9, then as x→9+, either y → ____or _____
1. 2 answers
2. asked by mary
3. 5,738 views
To balance a seesaw, the distance, in feet, a person is from the fulcrum is inversely proportional to the person's weight, in
1. 5 answers
2. asked by Alice
3. 5,694 views
THE SOLUBILITY PRODUCT CONSTANT FOR BaSO4 AT 298K IS 1.1X10-1O POWER. CALCULATE THE SOLUBILITY OF BaSO4 IN MOL\L AT 298K
1. 1 answer
2. asked by JASMIN
3. 4,115 views
A 500-turn circular coil with an area of 0.050 0 m2 is mounted on a rotating frame that turns at a rate of 20.0 rad/s in the
1. 1 answer
2. asked by Muzammil
3. 3,797 views
Solve 8 sin(2 x) = 6 for the two smallest positive solutions A and B, with A < BGive your answers accurate to at least two
1. 1 answer
2. asked by anonymous
3. 3,521 views
The 9th term of an AP is 8 and the 4th term is 20. Find the first term and the common difference.
1. 2 answers
2. asked by lindsay
3. 3,374 views
A long coaxial cable consists of two concentric conductors. The inner conductor is a cylinder with radius R1, and it carries a
1. 1 answer
2. asked by abdul rahman
3. 3,325 views
Which is the strongest acid, CCl3COOH or CH2ClCOOH please explain WHY it is stronger.
1. 3 answers
2. asked by m
3. 3,179 views
Solve 5 cos(3 x) = 2 for the smallest three positive solutions.Give your answers accurate to at least two decimal places, as a
1. 1 answer
2. asked by Anonymous
3. 2,621 views
12x + 16y=1/5 & 13x + 24y =1/4,find value of x & y.
1. 1 answer
2. asked by rahul
3. 2,374 views
Find all solutions to 2 sin(theta) = sqrt(2) on the interval 0 less than or equal to theta less than 2 piGive your answers as
1. 2 answers
2. asked by anonymous
3. 2,320 views
The question asks me to find the area of the triangle with the given vertices. (The area A of the triangle having u and v as
1. 2 answers
2. asked by Krista
3. 2,013 views
A salesman who is on the road visiting clients thinks that on average he drives the same distance each day of the week. He keeps
1. 1 answer
2. asked by Bettie
3. 1,994 views
A 63.8 N crate is pulled up a 5.22 m inclined plane by a worker at constant velocity. If the plane is inclined at an angle of 59
1. 1 answer
2. asked by need help please
3. 1,826 views
Consider the pedigree below. This pedigree represents a family with a rare genetic disease.Note two very important assumptions:
1. 3 answers
2. asked by selly
3. 1,812 views
A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a platform of dimensions 28m by
1. 2 answers
2. asked by Anonymous
3. 1,743 views
Lobster fishers in Maine often use spherical buoys to mark their lobster traps. Every year the buoys must be repainted. An
1. 6 answers
2. asked by Shaniqua
3. 1,702 views
(b) Is this pedigree consistent with autosomal dominant inheritance?Yes No If you chose "yes", answer questions (i) and (ii) and
1. 2 answers
2. asked by selly
3. 1,632 views
There are 50 oranges in a box 3/10 of them are rotten. How many oranges are not rotten?
1. 3 answers
2. asked by Armando
3. 1,552 views
Solve sin(x) = 0.64 on 0 less than or equal to x less than 2piThere are two solutions, A and B, with A < B Give your answers
1. 1 answer
2. asked by anonymous
3. 1,512 views
Kathy drove from Dry Creek to Cactus, a distance of 250km. She increased her speed by 10km/h for the 360km trip from Cactus to
1. 1 answer
2. asked by Andre
3. 1,497 views
Prove or disprove the following identity:cos (x+pi/6) +sin (x-pi/3) = 0
1. 1 answer
2. asked by Natalie
3. 1,380 views
3. In the figure, a runaway truck with failed brakes is moving downgrade at 107 km/h just before the driver steers the truck up
1. 0 answers
2. asked by Samira
3. 1,370 views
If a and b are positive odd integers, then prove that one of (a+b)/2 and (a-b)/2 are even or odd number. I mean in the above
1. 3 answers
2. asked by Steve
3. 1,343 views
Find all solutions to 2 cos(theta) = - 1 on the interval 0 less than or equal to theta less than 2 piGive your answers as exact
1. 1 answer
2. asked by Anonymous
3. 1,322 views
(d) Is this pedigree consistent with sex-linked dominant inheritance?Yes No If you chose "yes", answer questions (i) and (ii)
1. 1 answer
2. asked by selly
3. 1,320 views
Calculate Kp at 298 K and 490 K for the reaction NO(g) + 1/2 O2(g) = NO2(g) assuming that Delta H(g) is constant over the
1. 1 answer
2. asked by hayley
3. 1,263 views
A rectangular garden is 20 m by 25m. It is surrounded by a sidewalk. The outside perimeter of the sidewalk is 114m. What is the
1. 1 answer
2. asked by john
3. 1,236 views
A 35,000 kg locomotive is moving at a velocity of 11 m/s east. What is the magnitude of the locomotive's momentum?
1. 1 answer
2. asked by alyssa
3. 1,149 views
When the concentration of a weak acid in solution is equal to the concentration of its conjugate base in solution, then:Would
1. 0 answers
2. asked by Marcus
3. 1,148 views
for a .001M solution of methionine:a) calculate the isoelectric pH b) calculate the isoionic pH
1. 1 answer
2. asked by Lana
3. 1,133 views
Rewrite the following expression as an algebraic expression in x:cos(arcsin(x))
1. 1 answer
2. asked by Natalie
3. 1,129 views
The president of a large university wishes to estimate the average age of the students presently enrolled. From past studies,
1. 1 answer
2. asked by chris
3. 1,124 views
A rollercoaster car loaded with passengers has a mass of 2,000 kilograms. The track of the roller coaster has a semi-circular
1. 1 answer
2. asked by Anonymous
3. 1,106 views
A builder pushesa wheelbarrow loaded with sand ,from rest at point A,up a ramp of unknown length ,which is inclined at unknown
1. 0 answers
2. asked by lucky
3. 1,105 views
Two parallel plates are separated by a dielectric of thickness 2 mm with a dielectric constant of 6. If the area of each plate
1. 1 answer
2. asked by Miguel
3. 1,085 views
When 1988 J of heat energy is added to 47.5 g of hexane, C6H14, the temperature increases by 18.5 °C. Calculate the molar heat
1. 0 answers
2. asked by zach
3. 1,085 views
Determine the electric potential energy for the array of three charges shown in the drawing, relative to its value when the
1. 0 answers
2. asked by Emilie
3. 1,081 views
The inner diameter of a piston is normally distributed with mean of 10 cm and standard deviation 0.03cma)below what value of
1. 1 answer
2. asked by Kira
3. 1,080 views
true life magazine wants an analysis of the demographic characteristics of readers in c++ the marketing department has
1. 0 answers
2. asked by Anonymous
3. 1,067 views
a metal bar weighs 9 grams .93% of of the bar is silver.how many grams of silver is in the bar?
1. 1 answer
2. asked by himani
3. 1,064 views
A basketball player made 65 out of 100 attempted free throws. What pecent of free throws was made?
1. 1 answer
2. asked by deirdre
3. 1,035 views
A rocket takes off vertically at time t=0, and during the first 10 s of flight its acceleration in m/s^2 is given by
1. 1 answer
2. asked by bell
3. 1,035 views
Im not getting these answers at all, please help.Find a formula for the fourth degree polynomial p(x) whose graph is symmetric
1. 1 answer
2. asked by Anonymous
3. 1,026 views
50 ml of a .1103M solution of formic acid is titrated with a .2511M NaOH.a) What is the pH before and NaOH is added? b) How many
1. 0 answers
2. asked by Jessica
3. 1,021 views
One more question:Beginning with the function f(x) = (0.8)^(x), state what transformations were used on this to obtain the
1. 2 answers
2. asked by Daniel
3. 999 views
A certain constant-pressure reaction is nonspontaneous at 37°C. The entropy change for the reaction is 83 J/K. What can you
1. 0 answers
2. asked by hannah
3. 963 views
Complete and balance the molecular equation, including phases, for the reaction of aqueous copper(II) chloride, CuCl2, and
1. 0 answers
2. asked by Unknown
3. 953 views
Solve negative five-ninths equals negative two v minus one-third for v.choices four-ninths negative one-eighteenth one-ninth
1. 1 answer
2. asked by sammy
3. 945 views
What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of
1. 0 answers
2. asked by rodger
3. 941 views
A cylinder shaped jar has a radius of 2 cm and a height of 6 cm. What is the volume of the jar?
1. 1 answer
2. asked by Robinaylor
3. 936 views
The Question is:The value of a new car depreciates at a rate of 12% per year. 1)Write an equation to represent the approximate
1. 2 answers
2. asked by Daniel
3. 932 views
An antique dresser was purchased for $7500 in 2005. The dresser increases in value by 9% per year. Find the value of the dresser
1. 2 answers
2. asked by Daniel
3. 930 views
Solve sin(x) = -0.36 on 0 le x lt 2piThere are two solutions, A and B, with A < B and A and B in radians to 4 decimal places.
1. 3 answers
2. asked by marie darling
3. 912 views
A crane with a movable pulley system on a horizontal arm is moving a large container. The 355 kg container is hanging from a
1. 1 answer
2. asked by Bella
3. 912 views
In a study of store checkout scanning systems, samples of purchases were used to compare the scanned prices to the posted
1. 1 answer
2. asked by Bettie
3. 905 views
Poverty leads 2 ppl bng undernourised,n dey lck access 2 clean air n basic services.n als ppl hvng fewer choices abt whr dey
1. 1 answer
2. asked by Sally madiba(hans kekana secondary school
3. 900 views
A factory worker productivity is normally distributed. worker A produces an average of 84 units per day with a standard
1. 2 answers
2. asked by mercy
3. 899 views
The Earth has a radius of about 6.38 ´ 103 kilometers at the equator and rotates 360° every 24 hours. The angular displacement
1. 0 answers
2. asked by carmen
3. 870 views
I am writing about interviewing Deaf Persons for my ASL research paper. The first person is Christian DeGuzman. He is profoundly
1. 1 answer
2. asked by Erin
3. 866 views
i. Which of the following solutions has the lowest pH (more acidic). Explain you answers.a. a 0.1 M solution of a strong acid or
1. 0 answers
2. asked by m
3. 865 views
Find the volume of the parallelepiped with the given vertices:A(0,0,0) B(4,0,0) C(4,-2,3) D(0,-2,3) E(4,5,3) F(0,5,3) G(0,3,6)
1. 3 answers
2. asked by Christal
3. 843 views
A sphere has a great circle circumference of 40pi feet. What's its volume?
1. 2 answers
2. asked by Shaniqua
3. 836 views
a curve is such that dy/dx=4x+7. the line y=2x meets the curve at point 'P'. Given that the gradient of the curve at P is 5.
1. 1 answer
2. asked by Ashley
3. 833 views
25/11 + 2y = 3Subtract 25/11 from both sides How do subtract this fraction from 3?
1. 1 answer
2. asked by rj
3. 829 views
How to address hiv/aids
1. 3 answers
2. asked by Anonymous
3. 826 views
I have a snow globe with a radius of 2 cm. What is the volme of the globe?
1. 1 answer
2. asked by Robin Taylor
3. 818 views
Graph f(x) = sin(3x)/sin(x) - cos(3x)/cos(x) and make a conjecture. Prove your conjecture.
1. 1 answer
2. asked by Natalie
3. 805 views
A sample of aluminum oxide, Al2O3(s), contains 8.29*10^25 total atoms. Calculate the amount in moles of aluminum oxide in the
1. 0 answers
2. asked by lg
3. 802 views
Glycerol is a nonvolatile water soluble material. It's density is 1.25g/ml.Predict the vapor pressure of a solution of 2.40E2 ml
1. 1 answer
2. asked by Jonah
3. 800 views
Phenylketonuria (PKU) is a human metabolic disease caused by the recessive allele k. If 2 heterozygous carriers of the allele
1. 1 answer
2. asked by Rox
3. 794 views
The length of a rectangular flag is four yards longer than the width. The area f the flag is 140 square yards. Find the length
1. 1 answer
2. asked by Danielle
3. 794 views
Find 3 consecutive positive integers such that the product of the first and third, minus the second, is 1 more than 5 times the
1. 2 answers
2. asked by Nancy
3. 790 views
What value(s) of theta (0 less than or equal to theta less than or equal to 2pi) solve the following equation: cos squared theta
1. 2 answers
2. asked by Natalie
3. 788 views
solve the problem A drug is injected into a patient and the concentration of the drug is monitored. The drug's concentration,
1. 1 answer
2. asked by sara
3. 788 views
u have 2 cars moving at the same mass and speed collide and stick together what is the momentum?a. twice the original b. half
1. 0 answers
2. asked by Anonymous
3. 783 views
in triangle DEF,<D=50 degree, DE=14 meters, and DF=10 meters. find the area of triangle DEFto the nearest tenth of a square
1. 1 answer
2. asked by Alex
3. 779 views
John has 4 math books, 6 biology books,, and 8 statistics books to arrange on a shelf. In how many ways can he arrange the books
1. 2 answers
2. asked by Reet
3. 779 views
The indicator bromocresol green (HIn) can be in two different forms: As HIn the color of the indicator is yellow, an In the
1. 0 answers
2. asked by Marcus
3. 779 views
Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the
1. 0 answers
2. asked by helllp
3. 777 views
I'm having trouble balancing this equation: SO3^2- --> S2O4^2-It's in a basic solution. Thanks.
1. 1 answer
2. asked by C
3. 765 views
If there are 2L of H2 gas at .625 atm, and 1L of N2 gas at .200 atm isolated in two flasks, what are the final partial pressures
1. 1 answer
2. asked by Lily
3. 763 views
One hundred subjects in a psychological study had a mean of 35 on a test instrument designed to measure anger. The study the
1. 3 answers
2. asked by chris
3. 760 views
(c) Is this pedigree consistent with sex-linked recessive inheritance?Yes No If you chose "yes", answer questions (i) and (ii)
1. 4 answers
2. asked by selly
3. 758 views
Sodium fluoride and lead nitrate are both soluble in water. If 1.13 g of NaF and 0.232 g of Pb(NO3)2 are dissolved in sufficient
1. 1 answer
2. asked by jeff
3. 756 views
An investor desires to make an investment in bonds provided he realize 10% on his investment. How much can he afford to pay for
1. 0 answers
2. asked by Meme
3. 755 views
a cube is 5x5x5. How many smaller cubesin the larger cube. So I just mult. to get 125?
1. 1 answer
2. asked by jeanna
3. 755 views
A plane leaves point A and flies S80° E to point B400 km away. How far east of A is B (to the nearest kilometer)?
1. 1 answer
2. asked by Vincent
3. 750 views
Gettin to old to help a 13 yr old. I think I know the answer to the below but need to confirm it. Anyone that could assist this
1. 1 answer
2. asked by Grandpa
3. 736 views
Products used to remove clogs in drains contain strong bases, such as sodium hydroxide (NaOH). If drain cleaner containing 10.0g
1. 0 answers
2. asked by Allyson
3. 730 views
Sumptuary laws are: (Points : 1)property laws. marriage laws. religious laws. civil laws.
1. 1 answer
2. asked by Tawnya
3. 704 views
find the length of arc if an angle measuring 25 degrees is in the circle of radius 6 feet
1. 2 answers
2. asked by Alex
3. 699 views
A current I=2 Amperes flows in a circular single loop coil of radius R=10 cm.(a) Evaluate the magnitude of the magnetic field
1. 16 answers
2. asked by abdul rahman
3. 697 views
Simplify. (82 - 60) + [(-3 x 4) - 36÷4]25 19 10 1 <- I think this one is right I really hate math!!! lol...
1. 1 answer
2. asked by Tammy
3. 693 views
Consider the diprotic acid H2A with K1 1*10^-3 and K2= 1*10^-9 .Find pH, [H2A], [HA], and [A2-] for a .2000M solution of H2A
1. 0 answers
2. asked by Jessica
3. 693 views
The weather forecast states that there is a 70% chance of rain tomorrow. Which of the "definitions" of probability is relevant
1. 2 answers
2. asked by Alice
3. 685 views
i. Which of the following solutions has the lowest pH (more acidic). Explain you answers.a. a 0.1 M solution of a strong acid or
1. 0 answers
2. asked by m
3. 680 views
Iam stuck with this question.Please anyone help me. An airplane is flying at an altitude of 10,000m.The pilot sees two ships A
1. 1 answer
2. asked by Shane
3. 680 views

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