SC

Most popular questions and responses by SC
  1. Math

    In 1968, the U.S. minimum wage was $1.60 per hour. In 1976, the minimum wage was $2.30 per hour. Assume the minimum wage grows according to an exponential model w(t), where t represents the time in years after 1960. Find the Formula for w(t) My work so

    asked on November 3, 2009
  2. Statistics

    According to insurance records a car with a certain protection system will be recovered 89% of the time. Find the probability that 3 of 7 stolen cars will be recovered.

    asked on May 3, 2012
  3. Math

    Shirley is on a ferris wheel which spins at the rate of 3.2 revolutions per minute. The wheel has a radius of 45 feet, and the center of the wheels is 59 feet above the ground. After the wheel starts moving. Shirley takes 16 seconds to reach the top of the

    asked on November 28, 2009
  4. Math

    The population of termites and spiders in a certain house are growing exponentially. the house contains 100 termites the day you move in. After 4 days, the house contains 200 termites. Three days after moving in, there are two times as many termites as

    asked on November 5, 2009
  5. statistics

    The below table shows the probabilities generated by rolling one die 50 times and noting the up face. What is the probability of getting an odd up face? roll 1 Probability 0.22 roll2 probability 0.10 roll 3 probability 0.18 roll 4 probability 0.12 roll 5

    asked on May 3, 2012
  6. Math

    Lee is running around the perimeter of a circular track at a rate of 10 ft/sec. The track has a radius of 100 yards. After 10 seconds, Lee turns and runs along a radial line to the center of the circle. Once he reaches the center, he turns and runs along a

    asked on November 24, 2009
  7. Math

    This is the (average) sale price for single family property in Seattle and Port Townsend Year Seattle Port Townsend 1970 $38000 $8400 1990 $175000 $168400 (a) When will the average sales price in seattle and port t. be equal and what is this price? (b)When

    asked on October 8, 2009
  8. Math

    In 1987, the population of Mexico was estimated at 82 million people, with an annual growth rate of 2.5%. The 1987 population of the United States was estimated at 244 million with an annual growth rate of 0.7%. Assume that both populations are growing

    asked on November 5, 2009
  9. physics

    What amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4.18 J/g°C. 1200 joules 1500 joules 1700 joules 1900 joules 2000 joules

    asked on June 22, 2015
  10. Math

    If a ball is throw into the air with a velocity of 40ft/s its height in feet t seconds later is given by: y=40t-16t^2. Find the average velocity for the time period beginning when t=2 and lasting 0.5 seconds.

    asked on January 6, 2010
  11. Math

    Pam is taking train from the town of Rome to the town of Florence. Rome is located 30 miles due West of the town of Paris. Florence is 25 miles East, and 45 mies North of Rome. On her trip, how close does Pam get to Paris? My work so far... She's in Rome

    asked on October 12, 2009
  12. MATH

    Danny is measuring the loudness of a police siren. At t=2 seconds, the siren's loudness is at its maximum of 112 dB for the first time. At t=7 seconds, the siren's loudness is at its minimum of 88 dB for the first time. The loudness is a sinusoidal

    asked on December 10, 2009
  13. physics

    A proton has mass 1.7×10−27 kg. What is the magnitude of the impulse required to increase its speed from 0.995c to 0.998c? magnitude of impulse = i used mv=vectorp i don't know what to do from there

    asked on June 19, 2014
  14. physics

    Two Bals. of masses mA = 45 grams and mB = 65 grams are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released: ----------------------------- /| | - /è| | | / | | | 30 cm / | | | mA | | | mA mB - where è =

    asked on April 9, 2013
  15. physics

    A 0.6 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.0035 seconds. The block eventually slides at an angle of 24 degrees

    asked on June 23, 2014
  16. physics

    A 10000 car comes to a bridge during a storm and finds the bridge washed out. The 750 driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 22.8 above the river, while the opposite side is a mere 5.60

    asked on September 17, 2009
  17. math

    Let f(x)=x+2 Ix-3I and g(x)=3x-1 Find all solutions to the equation f(g(x))=-4x So this is what I did... (3x-1)+2 I(3x-1)-3I=-4x (3x-1)+2 I3x-4I=-4x This is where I got stuck. What do I do with the absolute value? and this part?(3x-1)+2=3x+1 ??

    asked on December 8, 2009
  18. MATHEMATICS

    TO MAKE 5 SETS OF CURTAINS, WHEN EACH SET REQUIRES 2 1/3 YARDS, HOW MANY OF MATERIAL ARE NEEDED? (1) 7 1/3 (2) 9 2/3 (3) 10 1/3 (4) 10 2/3 (5) 11 2/3 I think the answer is (5) 11 2/3??

    asked on February 24, 2016
  19. Math

    An indoor running track has the dimensions shown. The ends of the track are semicircles. If the track is to be resurfaced, how many square feet of material will be required? The semicircle is listed at 34 ft., the straightaway at 80 ft., and individual

    asked on May 9, 2012
  20. Chemistry

    I have to write a bunch of atomic symbol for these isotopes and I don't understand how to I do it. (a) atomic number=53, number of neutrons=79 I looked at the periodic table for 53 so the element is Iodine. So They gave the atomic number and I have the

    asked on April 6, 2010
  21. Math

    Cameron is located 2 miles due East of an intersection between two country roads. He decides to walk in a straight line (cross-country) toward a position 3 miles due North of the intersection; it takes Cameron one hour to reach that location. (a) Find

    asked on January 18, 2010
  22. Math

    The location of an object on the x-axis at time t seconds is given by x(t)= a + mt, where a, m are constants. (a) Where is the object located at time t=1? x(1)= a+m(1) = a+m (b) What is the average velocity of the object between 1 and 2 seconds?

    asked on January 18, 2010
  23. Math

    Explain why the function is discontinuous at the given number a. f(x)=ln l x-2 l a=2 I don't understand how I would explain this.. in the back of the book it said f(2) is not defined. What do they mean by that?

    asked on January 14, 2010
  24. Math

    The temperature in a certain cave is a sinusoidal function of time. When you first enter the cave, you set up a thermometer to record the temperature. After 19.5 hours, the temperature in the cave is at its maximum: 35 degrees celsius. The temperature then

    asked on December 8, 2009
  25. Math

    Find the linear-to-linear function who graph passes through the points (1,1) (5,2) and (20,3). I know the function is y=ax+b/x+d. I need help getting it to that form.

    asked on November 9, 2009
  26. 9th. algebra

    how can I figure out the formula. example. I need to transform the following equation y = x2 + 4 - 8 into vertex form and then I need to state the coordinates of the vertex of the parabola. I forgot how to arrive at the answer

    asked on May 29, 2009
  27. Math

    Hi, I need help differentiating this equation y=(cos5x) (e^-5x ) This is what I tried to do.... -5 (sin5x) (e^-5x) + 5 (e^-5x) (cos5x)

    asked on February 7, 2010
  28. Math

    Find the Limit Lim x-5/ (1/x)-(1/5) x->5 can I assume that 1/x is going to infinity so (1/x) is zero? so then I will be left with: 5-5/ (-1/5) 0/ (-1/5) =limit is 0?

    asked on February 2, 2010
  29. Math

    How would you simplify (-x^2+2xh+h^2-2x-2h-2x^2+4x)/h ?

    asked on October 12, 2009
  30. Math

    Find the point of intersection between y=2-(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose coordinates involve the unknown a . I got that which is x=2/(2a+1), y=(1+2a)/(2a+1)

    asked on October 9, 2009
  31. Math

    Find the point of intersection between y=2-(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose coordinates involve the unknown a . My work so far: I set the two equations equal to each other because they intersect.

    asked on October 8, 2009
  32. Math

    Suppose you drop a ball from the top of a five-story building onto the sidewalk 70 ft below. a. What is the initial velocity of the ball? b. Determine a function for the height of the ball t seconds after it's released. c. How long will the ball be in the

    asked on March 24, 2009
  33. Math

    Romeo and Juliet are moving in the xy-plane. Juliet starts at the point (0,20( and moves in a straight line at a constant speed. She will pass through the origin in exactly 5 seconds. Romeo starts at the same time from the point (30,0) and moves in a

    asked on December 10, 2009
  34. Algebra

    x_< 2 y_>-2x+4

    asked on May 3, 2011
  35. physics

    a object is traveling horizontaly when it reaches a 50meter drop how fast must the object be traveling to land 90 meters away from the edge of the drop

    asked on September 9, 2010
  36. Math

    Find the Derivative of: F(x)= (x^2) (e^x) + (e^x) would I use the product rule? F'(x)= 2x(e^x) + (e^x) (x^2) + (e^x) = (e^x) ( x^2 + 2x + 1 )

    asked on February 2, 2010
  37. Math

    Let f(x)-10x-5. Find a function h(x) such that h(h(x))=f(x).

    asked on November 17, 2009
  38. Math

    Thanks

    asked on October 23, 2008
  1. ELA Lesson 18: Adventures and Imagination UnitTest

    This test has different questions to deter cheating.

    posted on April 24, 2019
  2. Social Studies (Latin America unit review practice

    1. a 2. b 3. d 4. b 5. a 6. c 7. d 8. a 9. d 10. b 11. a 12. b 13. b 14. a 15. a 16. b 17. c 18. b 19. a 20. d

    posted on April 9, 2019
  3. Language arts

    bad c=b,c,a,d b,c a d=bad

    posted on March 22, 2019
  4. MATHEMATICS

    oh thank you , I have worked on that for hours!!:)

    posted on February 24, 2016
  5. physics

    Two Bals of masses mA = 45 grams and mB = 65 grams are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released: ============================== '''''''''/|''|'''-'''''''''''' ''''''''/è|''|'''|''''''''''''

    posted on April 9, 2013
  6. physics

    Two Bals. of masses mA = 45 grams and mB = 65 grams are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released: ============================= ---------/| | - --------/è| | | -------/ | | | 30 cm ------/ | |

    posted on April 9, 2013
  7. Research Project on Computer Confidentiality

    same problem cant find resouces

    posted on September 29, 2010
  8. Math

    ahhh i see. dang, then I got this one wrong on the test. thank you!

    posted on February 2, 2010
  9. Math

    Oh okay thank you!

    posted on February 2, 2010
  10. Math

    is parametric equation same as the uniform linear motion? where x(t)=a+bt , y(t)c+dt would I use this to solve for a?

    posted on January 18, 2010
  11. Math

    ohh i see it now! thank you!

    posted on January 6, 2010
  12. math

    Thanks you! I get it now!

    posted on December 8, 2009
  13. Math

    f(x)=10x-5*******

    posted on November 17, 2009
  14. Math

    Ohh all i needed to do was divide! heh thanks a lot!

    posted on November 5, 2009
  15. Math

    I made a mistake. after eight days , its 199.99 spiders. I still don't understand how would we get s?

    posted on November 5, 2009
  16. Math

    Oh! I think I made a mistake in writing out the equation! thanks for pointing it out. I know what to do now thank you!

    posted on October 12, 2009
  17. Math

    Thanks for helping. What you explained to me makes sense. But i checked the back of the book and it said for (a) they will be equal in 1995 at $214,313. so is (b) it said its 1982.70 Sea=$124,965. weird... I going to try these problems out! and see what

    posted on October 8, 2009
  18. Math

    thank you! =D

    posted on October 8, 2009
  19. 12 Biology--THIS IS URGENT

    but would it change because some of the codons are extracted during the introns excision ??

    posted on April 14, 2008