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2013
April

Questions Asked on April 7, 2013

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. 7,912 views
Solve for y (3/4)(8x+4x)+5y+4=(2/3)(12X+9)
1. 1 answer
2. asked by Louise
3. 346 views
Stefan pours 5/8 cup of milk. He uses 2/3 of it for a bowl of cereal. What fraction of a cup of milk does he use with his
1. 7 answers
2. asked by Alex
3. 403 views
Confused!So here is the question: Inflation is currently causing the cost of items to increase by about 2.5% per year. In 2009 a
1. 3 answers
2. asked by Daniel
3. 450 views
The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following
1. 1 answer
2. asked by Mary
3. 543 views
Critically discuss five ways in which air pollution problem impacts in the community
1. 1 answer
2. asked by hlobi
3. 495 views
Between Mg and Zn which one is the anode and which one is the cathode?And between Mg and Fe which one is the anode and which one
1. 0 answers
2. asked by Shyanne
3. 405 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. 769 views
1. A certain airline has 10 flights a day from N.Y. to Chicago. From chicago there are 8 flights a day to L.A. Can you conclude
1. 2 answers
2. asked by Anonymous
3. 434 views
Prove or disprove the following identity:cos (x+pi/6) +sin (x-pi/3) = 0
1. 1 answer
2. asked by Natalie
3. 1,343 views
Expand (3f+2h)^4
1. 1 answer
2. asked by Diamond
3. 370 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. 1,030 views
Which is the strongest acid, CCl3COOH or CH2ClCOOH please explain WHY it is stronger.
1. 3 answers
2. asked by m
3. 3,146 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. 1,188 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. 763 views
There are many similes and metaphors that allude to death and dying in the story (death in the shawl). Identify as many as you
1. 1 answer
2. asked by esther
3. 513 views
Is 2Cos x the same thing as Cos^2 x?Thanks
1. 1 answer
2. asked by Shadow
3. 377 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. 959 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. 5,643 views
What is the coeffecient of drag for the shape that has diameter 7.32[cm]? .Use three sig. figs. or N/A if there is not enough
1. 0 answers
2. asked by Sean
3. 407 views
Rewrite the following expression as an algebraic expression in x:cos(arcsin(x))
1. 1 answer
2. asked by Natalie
3. 1,083 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. 653 views
1. You have a large wind tunnel of cross-sectional area 0.61[m2]. The wind speed is 4[ms-1]. Assume air density is 1 [kgm-3].
1. 0 answers
2. asked by Sean
3. 525 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. 739 views
Sumptuary laws are: (Points : 1)property laws. marriage laws. religious laws. civil laws.
1. 1 answer
2. asked by Tawnya
3. 671 views
Solve the trig equation exactly over the indicated interval.tanθ = 0, all real numbers I know the answer is πn, but I don't
1. 2 answers
2. asked by Anne
3. 509 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. 683 views
Joe has $10,000 to purchase a used car. If the sales tax is 7% and the fee for title and license plates is $200, what is the
1. 3 answers
2. asked by Tammy
3. 433 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. 751 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. 715 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. 653 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. 873 views
Cal the index of refraction for a medium in which the speed of light is 2.012*10^8 meter per seconds
1. 0 answers
2. asked by Damilola
3. 348 views
energy produced from atomic reactions is called ________
1. 2 answers
2. asked by hannia
3. 541 views
if the temperature is 14F at 4pm and is lowered every 2hrs what is the temp. at midnight
1. 2 answers
2. asked by Anonymous
3. 308 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. 758 views
1. You have a large wind tunnel of cross-sectional area 0.61[m2]. The wind speed is 4[ms-1]. Assume air density is 1 [kgm-3].
1. 0 answers
2. asked by Robert
3. 374 views
How do the volume of prisms compare as the number of faces in the prisms increases? Does the volume remain the same? Explain
1. 2 answers
2. asked by Greg
3. 608 views
Platform area = 0.027[m2].Wind Speed = 7.1[ms-1]. Air Density = 1[kg m-3]. Drag = 0.39[N]. Lift = 1.45[N]. Coeffecient of Lift =
1. 0 answers
2. asked by John
3. 364 views
IQ score are normally distributed with a mean of 95 and a standard deviation of 17. If the sample size is n=36 find the mean and
1. 1 answer
2. asked by Megan
3. 627 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. 1,506 views
Sketch the titration curve for the tirtation of (0.10M) HCl vs 25.0mL (0.50M) NaOH
1. 0 answers
2. asked by Rob
3. 483 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. 780 views
a basket ball player makes 65% of her free throws find the probability that she will make at least 7 of her next 8 free throws
1. 0 answers
2. asked by Anonymous
3. 590 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. 836 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. 1,041 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. 1,059 views
Compared to the number of radians in one revolution of a bicycle tire with a radius of 33 centimeters, the number of radians in
1. 1 answer
2. asked by carmen
3. 586 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. 990 views
mc030-1.jpgTwo stars are bound together by gravity. The larger star has four times the mass of the smaller star. Which diagram
1. 0 answers
2. asked by carmen
3. 514 views
If cosA is equal to 12/13 where 0 degrees is less than A less than 90 degrees, then tanA is equal to 3/4 where 0 degrees is less
1. 1 answer
2. asked by Lungelo masuku
3. 327 views
What does a lower perfect square and a upper perfect square mean.
1. 0 answers
2. asked by ashley
3. 592 views
Suppose that 2.25 grams of CuSO4 are dissolved in 930 mLs of 0.30 M ammonia. What concentration (Molarity) of Cu2+ ion is
1. 0 answers
2. asked by Anonymous
3. 570 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. 1,117 views
Which expression would provide the most reasonable estimate for the product of the expression 4/7 x 3 7/8
1. 1 answer
2. asked by Kelly Coreas
3. 327 views
If the average IQ is 100 with a standard deviation of 10, what percentage of the population has an IQ of at least 116?
1. 1 answer
2. asked by Josh
3. 416 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. 1,452 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. 718 views
I'm writing a thesis for pathogens for infectious diseases. My essay is going to be about depressive disorder and anxiety
1. 1 answer
2. asked by Tina
3. 408 views
A Family travels 200 km in two hours and 20 min.then they stop to eat lunch.After lunch they travel 300 km In Two 3 Hours and
1. 1 answer
2. asked by Edward
3. 435 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. 1,108 views
Simplify and write the trigonometric expression in terms of sine and cosine:sin x +(cot x)(cos x) = 1/f(x) f(x)= ?
1. 0 answers
2. asked by tyler
3. 513 views
A boat is traveling on a bearing of 25 degrees East of North at a speed of 4 knots (a knot is 1.852 km/h). After traveling for 3
1. 3 answers
2. asked by Chad
3. 560 views
A 337-\rm mL sample of unknown \rm HCl solution reacts completely with \rm Na_2CO_3 to form 17.1g \rm CO_2. What was the
1. 0 answers
2. asked by Lauren
3. 501 views
What volume of 2.25\it M \rm HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.200\it M \rm
1. 0 answers
2. asked by Lauren
3. 591 views
If tan^2(t) - sin^2(t) = sin^a(t)\cos^b(t), thenthe positive power a = the positive power b =
1. 0 answers
2. asked by tyler
3. 389 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. 726 views
Using the data in this table of the thermodynamic quantities for selected substances and given the pressures listed, calculate
1. 0 answers
2. asked by sarah
3. 585 views
1a)if accelerating voltage is doubled in a CRT the deflection will change from "d" to ____?b) if magnetic field strength is
1. 0 answers
2. asked by Anna
3. 424 views
4 famous poet during Spain golden age ?
1. 1 answer
2. asked by Ali
3. 458 views
Come up with 10 things (like bowling) that could use physics? What does this mean?
1. 0 answers
2. asked by Shaniqua
3. 296 views
a .2280g sample contained only NaCl and KBr. it was dissolved in water and titrated with a 0.04799M of AgNO3. complete titration
1. 0 answers
2. asked by Lana
3. 581 views
What was the MAIN focus of African American activists in 1964?
1. 1 answer
2. asked by Nina
3. 414 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. 806 views
A sphere has a great circle circumference of 40pi feet. What's its volume?
1. 2 answers
2. asked by Shaniqua
3. 802 views
I'm not really sure how to go about doing this problem...What is the pH of a 7.40 x 10-3 M solution of NH4Cl? Help is
1. 0 answers
2. asked by Maddie
3. 360 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. 712 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. 974 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. 657 views
i. Which of the following solutions has the lowest pH (more acidic). Explain you answers.a. a 0.1 M solution of an acid with
1. 0 answers
2. asked by Anonymous
3. 440 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. 1,952 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. 445 views
what should you consider when you plan a title for a graph?
1. 1 answer
2. asked by Anon
3. 265 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. 908 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. 1,004 views
If the sound waves detected by the dector is the same as the frequency of the source, what can we conclude about the motion of
1. 0 answers
2. asked by daryl
3. 375 views
Explain how water of hydration is related to measurement. Then explain how it is related to the law of definite composition
1. 1 answer
2. asked by Lydia
3. 635 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. 875 views
Air pressure decreases as altitude increases^ which one goes on the horizontal axis and which one goes vertical axis? how did
1. 1 answer
2. asked by Anon
3. 435 views
john cabot laid claim to the newfoundland region of canada for______ in 1497.
1. 2 answers
2. asked by michelle
3. 343 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. 990 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. 696 views
The Water loss by the sample, and the percent by weight of water in the unknown hydrates is 34.78%H2O.which of the ten possible
1. 0 answers
2. asked by judy
3. 378 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. 714 views
Logv3(12) = logv3 (3t^2) - logv3 (3t)(the v means "log 3"- 3 is the base)
1. 5 answers
2. asked by CASEY
3. 440 views
Critically discuss 5 ways in which floods problem impact on the community provide relevant source to support your claims
1. 0 answers
2. asked by Thando
3. 461 views
which of the ten possible hydrates are the most likely ones to be your unknown based on the percent by weight?
1. 1 answer
2. asked by judy
3. 364 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. 1,329 views
Identify the solutions of the systems of equation, if any...X=1 Y=1
1. 1 answer
2. asked by Anonymous
3. 341 views
Simplify the expression if possible.log(100^4z)
1. 1 answer
2. asked by Katie
3. 387 views

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