Thursday

January 29, 2015

January 29, 2015

Total # Posts: 76,899

**Math**

A flagpole casts a shadow of 23.5 feet long.at the same time of day, Ana, who is 5.5 feet tall, casts a shadow that is 7.5 feet long. How tall in feet is the flagpole?
*January 13, 2015*

**Law / Legal **

many attorneys pose issues beginning with the word: a. "here" b. "now" c. "whether" d. "whatever" I think it's C
*January 13, 2015*

**science**

Which systems move the human body? I heard there were the skeletal, nervous, and muscular system. ??
*January 13, 2015*

**algebra**

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10
*January 13, 2015*

**algebra**

solve the system of equations using the substitution method 8x - 9 = y, y - 8x = 4
*January 13, 2015*

**algebra**

solve for x using the substitution method -8x + y = 18, 9x + 13y = 8
*January 13, 2015*

**Chemistry**

The overall reaction in a commercial heat pack can be represented as shown below. 4 Fe(s) + 3 O2(g) 2 Fe2O3(s) ΔH = -1652 kJ How much heat is released when 4.00 mol iron is reacted with excess O2? How much heat is released when 1.00 mol Fe2O3 is produced? How much heat is...
*January 13, 2015*

**math**

Thanks
*January 13, 2015*

**math**

Jill has a total of 12 1/2 hours of football practice after school five days a week. a. How many hours of practice will he have for 15 school days? I think the answer is 37 1/2 hours. b. How many hours of practice will he have for 22 school days? I think that the answer is 55 ...
*January 13, 2015*

**math**

According to the 2003 U.S. Census, approximately 129 million americans spend 3.4% of a 24-hour day commuting. How many minutes a day does a person in this group spend commuting?
*January 13, 2015*

**Math**

Jay's term paper is 18 pages long. If Madison's paper is 175% of the length of Jay's paper, find the length of Madison's paper.
*January 13, 2015*

**SS**

Why do less than half of the people in Russia possess a TV/radio?
*January 13, 2015*

**math**

Mr. Jenkins is going to buy museum tickets for a class trip. The museum director quotes him the following prices: • 20 tickets cost a total of $250. • 30 tickets cost a total of $375. • 50 tickets cost a total of $625. a. Based on these prices, is the cost of ...
*January 13, 2015*

**Pre-Calc/Trig**

nvm, i figured this one out
*January 13, 2015*

**Pre-Calc/Trig**

write an equation of the conic section: a hyperbola with vertices (0,-6) and (0,6) and asymptotes y=(3/4)x and y=(-3/4)x
*January 13, 2015*

**English**

Get an education, or you are doomed to flip greasy burgers for the rest of your life! Which propaganda technique is used in this sentence?
*January 13, 2015*

**math,trigonometry**

how do i state the law of sines and cosin in words ??
*January 13, 2015*

**Algebra**

Dhvdt sidekick when subway swings windup Kelly's webmail
*January 13, 2015*

**physics **

masses of 3,5,7,8 kg are suspended at equal distances of 1 m from rod.Find the CG of the arrangement.
*January 13, 2015*

**Math**

How to simplify (x-3)/(2x) - (4x + 3)/4?
*January 13, 2015*

**Spanish **

We have to sell it to her. 19. Tenemos que vendér BLANK. 20. BLANK tenemos que vender.
*January 13, 2015*

**Math**

x=4 dresses
*January 12, 2015*

**Math**

A total of 10,000 is invested into two funds paying 7.5% and 9% simple interest. The combined annual income for the two funds is $849. Determine how much is invested at each rate
*January 12, 2015*

**Calculus**

Find the point on the parabola x+y^2=0 that is closest to the point (0,-3).
*January 12, 2015*

**Calculus**

Okay, what are the rules for determining positive, negative, or zero?
*January 12, 2015*

**Calculus**

I get mixed up when graphing derivatives. If I'm given the graph of f how do I get f' and f"?
*January 12, 2015*

**Math**

(-y^2)^2= ?? Is it -y^4? A negative answer??
*January 12, 2015*

**Physics**

A particle with a mass of 1.55 kg is acted on by a force Fx acting in the x-direction. If the magnitude of the force varies in time as shown in the figure below, determine the following.
*January 12, 2015*

**Physics**

As shown in the figure below, cars #1 and #2 are sliding across a horizontal frictionless surface. The cars are equipped with a coupling arrangement similar to the one on railroad cars. Car #1 overtakes car #2 and they have a totally inelastic collision and become coupled ...
*January 12, 2015*

**physics**

Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 160,000 kg and a velocity of 0.300 m/s, and the second having a mass of 115,000 kg and a velocity of -0.120 m/s. (The minus...
*January 12, 2015*

**clothing an textiles**

six ways in which control fullness in a garment explain any two methods
*January 12, 2015*

**Physics**

A 4.00-g bullet is moving horizontally with a velocity vector v = 348 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. ...
*January 12, 2015*

**physics**

A 51.5-kg skater is traveling due east at a speed of 2.70 m/s. A 69.5-kg skater is moving due south at a speed of 7.50 m/s. They collide and hold on to each other after the collision, managing to move off at an angle θ south of east, with a speed of vf. Find the following.
*January 12, 2015*

**Physics**

An automobile has a mass of 2000 kg and a velocity of +12 m/s. It makes a rear-end collision with a stationary car whose mass is 1850 kg. The cars lock bumpers and skid off together with the wheels locked.
*January 12, 2015*

**math/algebra**

No
*January 12, 2015*

**math/algebra**

Mr. Jenkins is going to buy museum tickets for a class trip. The museum director quotes him the following prices: • 20 tickets cost a total of $250. • 30 tickets cost a total of $375. • 50 tickets cost a total of $625. a. Based on these prices, is the cost of ...
*January 12, 2015*

**physics**

Kevin has a mass of 77.5 kg and is skating with in-line skates. He sees his 21.00 kg younger brother up ahead standing on the sidewalk, with his back turned. Coming up from behind, he grabs his brother and rolls off at a speed of 2.18 m/s. Ignoring friction, find Kevin's ...
*January 12, 2015*

**physics**

ALLAN
*January 12, 2015*

**physics**

A 2.50 g bullet, traveling at a speed of 485 m/s, strikes the wooden block of a ballistic pendulum, such as that in the figure below. The block has a mass of 275 g.
*January 12, 2015*

**physics**

A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 270 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.6 m/s relative to the shore, and then hops onto an identical floating log that is ...
*January 12, 2015*

**physics**

An 85-kg jogger is heading due east at a speed of 2.0 m/s. A 55-kg jogger is heading 22° north of east at a speed of 2.7 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
*January 12, 2015*

**math**

A school band is having a fundraiser. Band members will sell coupon books for $10 each. The band earns $12.50 for every 5 coupon books that are sold. a. After the first week, the band members had sold 105 coupon books. How much money did the band members earn from the 105 ...
*January 12, 2015*

**physics**

A golf ball strikes a hard, smooth floor at an angle of θ = 26.4° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, and its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impulse applied to...
*January 12, 2015*

**Math**

and then what do you do to solve the problem??
*January 12, 2015*

**Math**

if x erasers have a weight of 80 grams, what is the total weight of 50 erasers?
*January 12, 2015*

**legal research writings**

Which of the following legal publications is NOT typically updated with pocket parts? A.Legal encyclopedias B.Legal dictionaries C.Digests D.Treatises I thought it was B The LexisNexis case abbreviation is: LX LN LE LEX I think it's LN
*January 12, 2015*

**Chemistry**

if 50 grams of sodium hydroxide mixed with 25 grams of hydrochloric acid how many grams of salt can be formed?
*January 12, 2015*

**chem/math**

8777
*January 12, 2015*

**Math**

A school band is having a fundraiser. Band members will sell coupon books for $10 each. The band earns $12.50 for every 5 coupon books that are sold. a. After the first week, the band members had sold 105 coupon books. How much money did the band members earn from the 105 ...
*January 12, 2015*

**Make english sentences **

Make sentences from avoid, honest and dwell
*January 12, 2015*

**math**

120
*January 12, 2015*

**English**

Make sentences from avoid, honest, dwell
*January 12, 2015*

**physics**

A 0.580-kg ball is dropped from rest at a point 1.60 m above the floor. The ball rebounds straight upward to a height of 0.650 m. What are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor?
*January 12, 2015*

**physics**

The acceleration of a particle which moves along the x axis is given by a=4x+5x^(3/2) The particle has speed of 2m/s when x=1m x is in meters a is in m/s^2 evaluate the velocity when x = 8m I know that I need to use kinematic eqn 3 adr = vdv then take the integral but I'm ...
*January 12, 2015*

**Algebra**

Solve the inequality. Graph the solution on a number line. -2 ≤ d + 0.5 ≤ 4.5
*January 12, 2015*

**Math**

The formula W = 35.74 + 0.6215T - 35.75V^4/25 + 0.4275TV^4/25 relates the wind chill temperature W to the air temperature T in degrees Fahrenheit and the wind speed V in miles per hour. Use a calculator to find the wind chill to the nearest degree when the air temperature is ...
*January 12, 2015*

**math**

Idk
*January 12, 2015*

**Algebra**

Write an equation in slope-intercept form of the line that contains the points in the table. X Y 1 9 4 10 7 11 13 13
*January 12, 2015*

**Algebra**

Write an equation in point-slope form of the line that has a slope of 1/2 and passes through the point (5, -2).
*January 12, 2015*

**Algebra**

neither?
*January 12, 2015*

**Algebra**

Tell if the following pair of lines is parallel, perpendicular, or neither. 3x - 2y= 16 y= -2/3x + 4
*January 12, 2015*

**Algebra**

Write an equation of a line that is parallel to y = 3x – 5 and goes through the point (3, 1).
*January 12, 2015*

**Math**

How to simplify 5^(4/3)? by writing it in radical form?
*January 12, 2015*

**Math**

I mean when 2 is the index.
*January 12, 2015*

**Math**

Is 2square root 6 the same as square root 6?
*January 12, 2015*

**Algebra **

The Badys and their maid, Alice, took a trip to Hawaii for their summer vacation. The travel agent told Ike that the trip would cost $210 for each child plus another $315 per adult. According to Ike Bady’s credit card receipt, the trip cost a total of $2205 for all 9 of ...
*January 12, 2015*

**Math**

What transformation happens from In x to 3 In x? Also, I had thought that 3 In x and In x^3 are the same, but the graphics calculator shows otherwise.
*January 12, 2015*

**Please check my Calculus**

I don't know if you will see this but Is number 3's answer D?
*January 12, 2015*

**Please check my Calculus**

1. Find the value(s) of c guaranteed by Rolle’s Theorem for f(x)=x^2+3x on [0, 2] A. c=-3/2 B. c=0, 3 C. Rolle’s Theorem doesn’t apply as f is not continuous on [0, 2] D. Rolle’s Theorem doesn’t apply as f(0) does not equal f(2) E. None of these I got ...
*January 12, 2015*

**soc102**

the relatvivist would agree with which statement about stem cell
*January 12, 2015*

**Please check my Calculus**

1. Which of the following describes the behavior of f(x)=x^3-x A. Relative maximum: x=0 B. Relative maximum: x=(1/sqrt(3)); Relative minimum: x=(-1/sqrt(3)) C. Relative maximum: x=(-1/sqrt(3)); Relative minimum: x=(1/sqrt(3)) D. Relative minimum: x=0 E. none of these I got C. ...
*January 12, 2015*

**Please check my Calculus**

1. Find all points of inflection of the function f(x)=x^4+x^3 A. (0, 0) and (-½, -1/16) B. (-½, -1/16) C. (0, 0) D. (0, 0) and (-¾, -27/256) E. none of these I got A. I found the second derivative and solved for x and plugged in the values to find the ...
*January 12, 2015*

**chemistry exercises**

The concentrated H2SO4 of 155g dissolved in enough amount of water if acidic solution is 2.3L a) what is the mole of H2SO4 b) what is the concentration H2SO4 c) what is the concentration of H+(H3O+) created in the solution d) what is the PH value of solution e) what is the ...
*January 12, 2015*

**chemistry**

2) At 298K, what are the molarities of pure water?
*January 12, 2015*

**chemistry**

The concentrated H2SO4 of 155g dissolved in enough amount of water if acidic solution is 2.3L a) what is the mole of H2SO4 b) what is the concentration H2SO4 c) what is the concentration of H+(H3O+) created in the solution d) what is the PH value of solution e) what is the ...
*January 12, 2015*

**Please check my Calculus**

1. Find all points of inflection of the function f(x)=x^4-6x^3 A. (0, 0) B. (0, 0), (9/2, -2187/16) C. (3, -81) D. (0, 0), 3, -81) E. none of these I got D. I found the second derivative and solved for x and plugged values into original function to get points. 2. Find dy/dx ...
*January 12, 2015*

**Please check my Calculus**

That's a nasty one, all right. f"(x) = 12(240x^6-36x^4-178x^2+5)/(12x^4-2x^2+15)^3 so the numerator is a cubic in x^2, not easy to solve. Not sure why they threw this curve ball.
*January 12, 2015*

**Please check my Calculus**

When I solve 1 without a graphing utility I one get 2 inflection points. How do you get the other two without a graphing utility. Not allowed to use calculators for this.
*January 12, 2015*

**Please check my Calculus**

1. Find all points of inflection: f(x)=1/12x^4-2x^2+15 A. (2, 0) B. (2, 0), (-2, 0) C. (0, 15) D. (2, 25/3), (-2, 25/3) E. none of these I got D. I found the second derivative and equaled it to 0 and solved for x. I plugged the x values in to get my points. 2. Find the ...
*January 12, 2015*

**Please check my Calculus**

#1 ok #2 f' = -3x^2+36x-105 = -3(x^2-12x+35) = -3(x-5)(x-7) f'>0 on (5,7), so D is correct #3 y' = 1+sinx y'=0 only at x = 3pi/2, so (D) is correct
*January 12, 2015*

**Please check my Calculus**

1. Given f(x)=-6/x, choose the correct statement A. The graph of f is concave upward on the interval (negative infinity, 0) B. The graph of f is concave downward on the interval (negative infinity, 0) C. The graph of f is concave upward on the interval (negative infinity, ...
*January 12, 2015*

**Chemistry (Acid-Base)**

2) At 298K, what are the molarities of pure water?
*January 12, 2015*

**Please check my Calculus**

1. Find all critical values for f(x)=(9-x^2)^⅗ A. 0 B. 3 C. -3,3 D. -3, 0, 3 E. none of these I got D. I found the derivative and solved for critical numbers. 2. Find all intervals on which the graph of f(x)=(x-1)/(x+3) is concave upward A. (negative infinity, infinity) ...
*January 12, 2015*

**Please check my Caclulus**

1. Find all intervals on which the graph of y=(x^2+1)/x^2 is concave upward. A. (negative infinity, infinity) B. (negative infinity, -1) U (1, infinity) C. (negative infinity, 0) U (0, infinity) D. (1, infinity) E. none of these I got C. I found the second derivative and used ...
*January 12, 2015*

**Calculus**

Find the absolute maximum and absolute minimum of f on the interval (-4, -1]: f(x)=(x^3+8x^2+19x+12)/(x+4) A. Maximum: None; Minimum: (-2, -1) B. Maximum: (-4, 3); Minimum (-1, 0) C. Maximum: (-4, 3); Minimum: (-2, -1) D. Maximum: None; Minimum: (-1, 0) E. none of these
*January 11, 2015*

**Calculus**

Find the values of x that give relative extrema for the function f(x)=3x^5-5x^3 A. Relative maximum: x= 1; Relative minimum: x=sqrt(5/3) B. Relative maximum: x=-1; Relative minimum: x=1 C. Relative maxima: x=+or- 1; Relative minimum: x=0 D. Relative maximum: x=0; Relative ...
*January 11, 2015*

**chemistry college**

At a constant temperature of 20oC and the partial pressure of 760 mmHg, the solubility of CO2 in water is 0.169g per 100mL. If the partial pressure is changed to 43,000 mmHg, what is the solubility of CO2?
*January 11, 2015*

**Measurement**

Thanks.
*January 11, 2015*

**Mechanics**

When electrically testing a rotor with an ohmmeter, you should check for shorts, ground, and what?
*January 11, 2015*

**math**

It's B
*January 11, 2015*

**Patton Fuller**

Identify GAAP applied to the health care industry.
*January 11, 2015*

**Algebra 2**

Find the equation of the line that is perpendicular to y=5 and passes through the point (2,3).
*January 11, 2015*

**Legal research**

Which of the following legal publications is NOT typically updated with pocket parts? A) Legal encyclopedias B) Legal dictionaries C) Digests D) Treatises I believe it's D. But then again I thought it maybe C.
*January 11, 2015*

**Legal research**

The most familiar method of locating law review and legal periodicals is the __________ to Legal Periodicals and Books. A. Collection B. Compilation C. Index D. Digest Digest?
*January 11, 2015*

**chemistry**

if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a solution of sodium nitrate that contains 35.0 g...
*January 11, 2015*

**chemistry**

if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a solution of sodium nitrate that contains 35.0 g...
*January 11, 2015*

**Legal research**

The LexisNexis case abbreviation is: A. LN. B. LX. C. LE. D. LEX. is it A?
*January 11, 2015*

**Writing/English**

What are some tips on writing in an embarrassed tone?
*January 11, 2015*

**Chemistry**

How many mL of 0.5 M HCl(aq) are needed to neutralize a 288 mL solution of 0.25 M NaOH?
*January 11, 2015*

**Calculus**

Use the graph of f(x)=x^2/(x^2-4) to determine on which of the following intervals Rolle’s Theorem applies. A. [0, 3] B. [-3, 3] C. [-3/2, 3/2] D. [-2, 2] E. none of these I know what the Rolle's Theorem is but I'm unsure on how you know if the function is ...
*January 11, 2015*

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