Wednesday

May 27, 2015

May 27, 2015

Total # Posts: 81,780

**Precal **

Evaluate the limit of f(g(x)) as x approaches 0. F(x)= 4x-4 G(x)= 8x+1
*May 4, 2015*

**creative expression and play**

i think that it is a
*May 4, 2015*

**creative expression and play **

Historically, toys have reflected the times in which they have been created. today's children sometimes play with media related figures taht: A. limit the imaginative possibilities of creative play B. develop the range of visual parameters C. encourage technological ...
*May 4, 2015*

**math**

The side of a square is measured to be 16 ft with a possible error of ±0.1 ft. Use differentials to estimate the error in the calculated area. Include units in your answer.
*May 4, 2015*

**Art and Creative Development**

i think A
*May 4, 2015*

**Art and Creative Development **

it is appropriate for teachers to comment on mass or volume when discussing: A.clay work B. collage C. pictures D. colored patterns
*May 4, 2015*

**Art and Creative Development**

i think it is B or D
*May 4, 2015*

**Art and Creative Development **

most three dimensional creation will require some sort of: A. clay or play-dough B. props C.paper bases D. fixative or fastener
*May 4, 2015*

**math**

What is the maximum volume in cubic inches of an open box to be made from a 12-inch by 16-inch piece of cardboard by cutting out squares of equal sides from the four corners and bending up the sides? Your work must include a statement of the function and its derivative. Give ...
*May 4, 2015*

**Stoichiometry **

2H2O(l) O2(g) 2SO2(g) → 2H2SO4(aq) If 50.0 g of sulfur dioxide from pollutants reacts with water and oxygen found in the air, how many grams of sulfuric acid can be produced? How many grams of oxygen are used in the process?
*May 4, 2015*

**english**

David asked “if the Week 4 assignment needed to be uploaded to Waypoint.”
*May 4, 2015*

**math**

The position function of a particle in rectilinear motion is given by s(t) s(t) = t3 – 9t2 + 24t + 1 for t ≥ 0. Find the position and acceleration of the particle at the instant the when the particle reverses direction. Include units in your answer.
*May 4, 2015*

**PHYSICS**

Please help me, I don't understand how to solve this: When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell. As a simple...
*May 4, 2015*

**maths**

solve the following systems of equation 5x+3y+z=-34 x-3y+2z=13 14x-2y+3z=-53
*May 3, 2015*

**chemistry**

What volume of 3.00M HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.400M Na2CO3?
*May 3, 2015*

**physics**

A cube has a density of 2200kg/m3 while at rest in the laboratory. What is the cube's density as measured by an experimenter in the laboratory as the cube moves through the laboratory at 81.0{\rm \\%} of the speed of light in a direction perpendicular to one of its faces?
*May 3, 2015*

**Math--ONE QUESTION**

Use arrow notation to describe the translation of point P(-9 , 8) to point (-14, 0). (x,y) -> (x + 5,y -8) (x,y) - > ( x - 8, y + 5) (x,y) -> (x - 5, y + 8) (x,y) -> (x - 5, y - 8 )
*May 3, 2015*

**Math Trigonometric Identities**

1/sinx - sinx = cosx/tanx
*May 3, 2015*

**Math HELPPP!**

Andrew's dog Bubba has an exercise area behind the house. A stake in the ground has a 12 foot rope tied to it. The other end of the rope is fastened to Bubba's collar. If Bubba travels in a circular path around the stake. What is the largest Circumference allowed by ...
*May 3, 2015*

**Math**

That leaves me with x > 6
*May 3, 2015*

**Math**

The solution set of radical(x - 1) (is greater than sign) 5 is the set of all real numbers x such that: F. x (is greater than sign) 4 G. x (is greater than sign) 6 H. x (is greater than sign) 24 J. x (is greater than sign) 25 K. x (is greater than sign) 26
*May 3, 2015*

**Math**

The measure of each interior angle of a regular polygon with n sides is [(n - 2)180 / n] degrees. What is the measure of each interior angle of a regular polygon with n sides, in radians? A. (n - 2)pi / 4n B. (n - 2)pi / 2n C. (n - 2)pi / n D. (n - 2)2pi / n E. (n - 2)4pi / n
*May 3, 2015*

**Physics**

Prove that if an object is at a distance of twice the focal length from a lens the image is the same size as the object. Show this using an algabraic method.
*May 3, 2015*

**Math**

If tan A = a / b, a (is greater than sign) 0, b (is greater than sign) 0, and 0 is (less than sign) A (is less than sign) pi / 2, then what is cos A? a. a / b B. b / a C. a / radical(a^2 + b^2) D. b / radical(a^2 + b^2) E. radical(a^2 + b^2) / b
*May 3, 2015*

**Math trigonometric Identities**

Is this correct? (sinx - cosx)^2 = 1 - 2sinxcosx LS = sin^2x - 2sinxcosx + cos^2x = 1 - cos^2x - 2sinxcosx + cos^2x = 1 - cos^2x + cos^2x - 2sinxcosx = 1 - 2sinxcosx LS = RS
*May 3, 2015*

**Algebra **

Robert needs to cut for shelves from a board that is 2.5 m long. the second shelf is 18 cm longer than twice the length of the first shelf. the third shelf is 12 cm shorter than the first shelf. the remaining shelf is 4 cm longer than the first shelf. if Robert must use the ...
*May 3, 2015*

**PHYSICS**

When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell. As a simple model of the supernova process, assume that the star is a...
*May 3, 2015*

**Math**

Thank you Steve :).
*May 3, 2015*

**Math**

The ratio of a to b is 3 to 4, and the ratio of c to b is 1 to 2. What is the ration of a to c? F. 1 to 1 G. 3 to 1 H. 3 to 2 J. 3 to 8 K. 6 to 1
*May 3, 2015*

**Math**

Thomas and Jonelle are playing darts in their garage using the board with the point values for each region shown below. The radius of the outside circle is 10 inches, and each of the other circles has a radius 2 inches smaller than the next larger circle. All of the circles ...
*May 3, 2015*

**Math**

Thanks!!
*May 3, 2015*

**Math**

What would the grapg of 10/x look like? A. a straight line B. a parabola C. a curve*** D. none of the above What would the graph of y=3/4x - 7/8 look like? A. a straight line*** B. a parabola C. a curve D. none of the above y=x2 + 1 look like? A. straight line B. a parabola...
*May 3, 2015*

**math**

which function has the greater rate of change? x-axix: -1 | 0 | 1 | 2 | y-axis: 0 | 1 | 2 | 3 | the graph has a line and 3 dots on the line. the first dot is 0, -1 the second dot is 0, 1 the third dot is 1, 2 A. the rates of change are equal B. the graph has a greater rate of ...
*May 3, 2015*

**Math**

Thank you Ms. Sue :).
*May 3, 2015*

**Math**

40%
*May 3, 2015*

**Math**

On September 1, a dress was priced at $90. On October 1, the price was reduced by 20%. On November 1, the price was further reduced by 25% of the October 1 price and marked FINAL. What percent of the original price was the FINAL price? F. 40% G. 45% H. 55% J. 60% K. 77.5%
*May 3, 2015*

**physics**

vibrating a long spring with a succession of pulses with a frequency of 50Hz produces adjacent nodes that are separated by 3.5cm. what is the velocity of the longitudinal waves formed?
*May 3, 2015*

**Math**

I'm a little confused. Is the right equal to 2sin to the power of 2x-1?
*May 3, 2015*

**Math**

(sinx - cosx)(sinx + cosx) = 2sin^2x -1 I need some tips on trigonometric identities. Why shouldn't I just turn (sinx + cosx) into 1 and would it still have the same identity?
*May 3, 2015*

**mth121**

mth 121(solve the linear equation:2x+3y=3, x-2y=5 and 3x+2y=7.)
*May 3, 2015*

**trigonometry**

Solve cos(x)=0.07 on 0≤x<2π
*May 3, 2015*

**Sociology**

I need help choosing an object to describe me for a sociology project.
*May 3, 2015*

**English**

Why is it that Ray Bradbury wrote Fahrenheit 451 during the 1950s?
*May 3, 2015*

**Math**

There is more to it... Find the exact value tan^-1(tan(-22/15pi)) I just could not figure out how to find an exact value for tan(-22/15pi)
*May 3, 2015*

**Math**

Evaluate the following expressions tan(−22/15π)
*May 3, 2015*

**Math**

Is 8x^2 + x^2 - 7x - x + 2x + 5y - 3y equal to 9x^2 - 8x + 2y or 9x^2 - 6x + 2y?
*May 3, 2015*

**ANT101 **

Sir Edward Burnett Tylor’s concept of survivals is best defined by which of the following? (Points : 1) Cultural traits change the least because they are the means by which a society copes with its environment. Primitive cultures have avoided extinction as more complex ...
*May 2, 2015*

**PHYSICS**

When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell. As a simple model of the supernova process, assume that the star is a...
*May 2, 2015*

**Math**

I need help proving this identity 1/cosx - cosx = sinxtanx
*May 2, 2015*

**PHYSICS**

A pipe 0.42 m long and closed at one end is filled with an unknown gas. The third lowest harmonic frequency for the pipe is 780 Hz. (a) What is the speed of sound in the unknown gas? (b) What is the fundamental frequency for this pipe when it is filled with the unknown gas?
*May 2, 2015*

**PHYSICS**

A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.750. Find the smallest value for the angle , such that the lower end of ...
*May 2, 2015*

**ANT101 **

The ___ method of anthropology is useful in many different work settings. (Points : 1) marketing pedagogical statistical participant observation
*May 2, 2015*

**PHYSICS**

A hiker, who weighs 977 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 4500 N, and rests on two concrete supports, one on each end. He stops 1/6 of the way along the bridge. What is the magnitude of the force that a ...
*May 2, 2015*

**PHYSICS**

The figure shows a jet engine suspended beneath the wing of an airplane. The weight of the engine is 14600 N and acts as shown in the figure. In flight the engine produces a thrust of 55100 N that is parallel to the ground. The rotational axis in the figure is perpendicular to...
*May 2, 2015*

**Math - Trigonometry**

Reiny, are you still here. I need help quick. I'm really bad at trigonometric identities. I need help.
*May 2, 2015*

**Math - Trigonometry**

LS = 1/cosx - cosx/cosx = 1-cosx/cosx = sinx/cosx I know this answer is extremely wrong. I have no idea what to do.
*May 2, 2015*

**Math - Trigonometry**

I need help proving this identity 1/cosx - cosx = sinxtanx
*May 2, 2015*

**Math - Trigonometry**

I need help proving this identity 2sin^2x - 1 = sin^2x - cos^2x
*May 2, 2015*

**Math - Trigonometry**

I need help proving this identity cscx + secx = (cosx + sinx)(secx)(cscx)
*May 2, 2015*

**Math**

Thank you so much Ms. Sue. This question was confusing. Two times I kept getting 106.
*May 2, 2015*

**Math**

Barb is going to cover a rectangular area 8 feet by 10 feet with rectangular paving blocks that are 4 inches by 8 inches by 2 inches to make a flat patio. What is the minimum number of paving blocks she will need if all the paving blocks will face the same direction? (Note: ...
*May 2, 2015*

**statistics**

8.value: 10.00 points The fracture strength of a certain type of manufactured glass is normally distributed with a mean of 509 MPa with a standard deviation of 17 MPa. (a) What is the probability that a randomly chosen sample of glass will break at less than 509 MPa? (Round ...
*May 2, 2015*

**Economics**

Once we have made these assumptions, what is the question?
*May 2, 2015*

**French**

Thank you very much! Just to clarify for the first one, if it were in the je form, would the command still be "Prends des salades"?
*May 2, 2015*

**French **

I have some questions about the imperative. 1. Prends les salades! How can one tell if this is an order to you or myself, as the conjugations for both tu and je are the same for "prendre"? 2. Is "acheter" a regular or irregular verb? I want to know whether ...
*May 2, 2015*

**life orientation**

Because they need help its important to their lives
*May 2, 2015*

**Physics**

A 1.4-kg object moves along the x axis, subject to the potential energy shown in the figure. If the object's speed at point B is 1.70 m/s, what are the approximate locations of its turning points? ___________m (left-hand turning point) ___________m (right-hand turning ...
*May 2, 2015*

**Physics**

A 1.4-kg object moves along the x axis, subject to the potential energy shown in the figure. If the object's speed at point B is 1.70 m/s, what are the approximate locations of its turning points? ___________m (left-hand turning point) ___________m (right-hand turning point)
*May 2, 2015*

**Math**

A fan with a diameter of 10cm is spinning at 25 revolutions per minute clockwise. The fan's reference blade starts pointing directly upwards. Determine an equation for a sinusoidal function that represents the fan's reference blade's vertical distance from the ...
*May 1, 2015*

**algebra**

x=-7,x=7,x=5/6
*May 1, 2015*

**Math- Trigonometric Functions**

I need help please. I have to finish this question.
*May 1, 2015*

**Math- Trigonometric Functions**

A fan with a diameter of 10cm is spinning at 25 revolutions per minute clockwise. The fan's reference blade starts pointing directly upwards. Determine an equation for a sinusoidal function that represents the fan's reference blade's vertical distance from the ...
*May 1, 2015*

**chemistry**

What is the root mean square speed of argon gas at 300 K? 1. 4.33 × 102 m/s 2. 1.37 × 101 m/s 3. 3.96 × 102 m/s 4. 4.30 × 101 m/s 5. 5.92 × 102 m/s
*May 1, 2015*

**chemistry**

Given a percent yield of 45.0% for the reaction: H2 + Cl2 → 2 HCl(g) How many moles of HCl gas are produced if 15.5 L of Cl2 at STP and excess H2 are reacted? 1. 0.769 mol 2. 0.346 mol 3. 0.622 mol 4. 3.08 mol 5. 1.38 mol 6. 0.156 mol
*May 1, 2015*

**Social studies **

How did the Cold War affect South Carolina? A. Military bases were reopened or built in the state*** B. the Soviet Union became a trade partner C. Communism became a popular political system D. The state experienced an economic recession
*May 1, 2015*

**Social Studies**

Thank you:)
*May 1, 2015*

**Social Studies**

How did changes in society caused by world war 2 affect blacks? A. Public schools were desegregated during the 1940s B. Black soldiers returning from war no longer encountered discrimination C. For the first time blacks were needed for factory work*** D. Units such as ...
*May 1, 2015*

**P.E.**

sorry if u feel like that!
*May 1, 2015*

**P.E.**

It's Dependence!!
*May 1, 2015*

**P.E.**

___________________ is when the brain develops a chemical need for a substance Intoxication*** Withdraw Detoxification Dependence
*May 1, 2015*

**Chemistry**

Imagine that you have a 6.00L gas tank and a 3.00L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 125atm , to what pressure should you fill the...
*May 1, 2015*

**P.E.**

thanks!! Sorry for me being silly.
*May 1, 2015*

**P.E.**

I now this! I looked it over and know I feel stupid!! It would be definitely definitely a!! I am sure, just to make sure am I right??
*May 1, 2015*

**P.E.**

OK!! Sorry:(:( I will Google the words and then try again.
*May 1, 2015*

**P.E.**

a person who wakes up after a night of binge drinking and feels nauseous and has a headache probably Has a hangover Has cirrhosis Is having a blackout Has a concussion***
*May 1, 2015*

**Chemistry**

Aluminum granules are a component of some drain cleaners because they react with sodium hydroxide to release both heat and gas bubbles, which help clear the drain clog. The reaction is 2 NaOH(aq) + 2 Al(s) + 6 H2O(ℓ) −→ 2 NaAl(OH)4(aq) + 3 H2(g) What mass of ...
*May 1, 2015*

**Chemistry**

305.3333
*May 1, 2015*

**Chemistry**

Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3 NO2(g) + H2O(ℓ) −→ 2 HNO3(ℓ) + NO(g) If 916 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the same ...
*May 1, 2015*

**P.E.**

thx!!
*May 1, 2015*

**P.E.**

I checked the answers and I think it is B.
*May 1, 2015*

**P.E.**

yes Ms. Sue I do know what Intoxicated is. It is when someone drinks and loses their mind and change their behavior! BTW, thanks Dove but I would like Ms. Sue to confirm for me!
*May 1, 2015*

**P.E.**

A person suffered a head injury, was unconscious for a few minutes, and is now sleepy and disoriented. This person likely Is intoxicated*** Has a concussion Is having a seizure Has meningitis
*May 1, 2015*

**P.E.**

OK! I just realzied that i did not eter the answer choices correctly, they are suppose to be:- Is made up of the brain and spinal cord Links the body to the brain Is made up of sensory and motor neurons Is responsible for thought and reasoning
*May 1, 2015*

**P.E.**

is it a and c??
*May 1, 2015*

**P.E.**

thanks!
*May 1, 2015*

**P.E.**

The peripheral nervous system (Select all that apply) Is made up of the brain and spinal cord Links the body to the brain Is made up of sensory and motor neurons*** Is responsible for thought and reasoning***
*May 1, 2015*

**Language arts**

Whose attitude toward Scrooge is most severe
*May 1, 2015*

**ANT101 **

"In most situations, the first-born male has priority to inherit the chieftainship (primogeniture)" (Nowak & Laird, 2010, p. 177). Suppose you write the following in a post/paper: In most cases, the first-born male has priority to inherit the chieftainship (Nowak & ...
*May 1, 2015*

**ANT101 **

"In Tikopia, when the paramount chief dies, there is an election among the lesser chiefs to replace him" (Nowak & Laird, 2010, p. 177). Suppose you write the following in your post or paper: When a Tikopian chief who rules over other chiefs dies, the chiefs beneath ...
*May 1, 2015*