SC
Most popular questions and responses by SC
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 
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 
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 
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 
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 
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 
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 
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 
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 
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=40t16t^2. Find the average velocity for the time period beginning when t=2 and lasting 0.5 seconds.
asked on January 6, 2010 
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 
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 
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 
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 
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 
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 
math
Let f(x)=x+2 Ix3I and g(x)=3x1 Find all solutions to the equation f(g(x))=4x So this is what I did... (3x1)+2 I(3x1)3I=4x (3x1)+2 I3x4I=4x This is where I got stuck. What do I do with the absolute value? and this part?(3x1)+2=3x+1 ??
asked on December 8, 2009 
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 
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 
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 
Math
Cameron is located 2 miles due East of an intersection between two country roads. He decides to walk in a straight line (crosscountry) 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 
Math
The location of an object on the xaxis 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 
Math
Explain why the function is discontinuous at the given number a. f(x)=ln l x2 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 
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 
Math
Find the lineartolinear 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 
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 
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 
Math
Find the Limit Lim x5/ (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: 55/ (1/5) 0/ (1/5) =limit is 0?
asked on February 2, 2010 
Math
How would you simplify (x^2+2xh+h^22x2h2x^2+4x)/h ?
asked on October 12, 2009 
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 
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 
Math
Suppose you drop a ball from the top of a fivestory 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 
Math
Romeo and Juliet are moving in the xyplane. 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 
Algebra
x_< 2 y_>2x+4
asked on May 3, 2011 
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 
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 
Math
Let f(x)10x5. Find a function h(x) such that h(h(x))=f(x).
asked on November 17, 2009 
Math
Thanks
asked on October 23, 2008

ELA Lesson 18: Adventures and Imagination UnitTest
This test has different questions to deter cheating.
posted on April 24, 2019 
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 
Language arts
bad c=b,c,a,d b,c a d=bad
posted on March 22, 2019 
MATHEMATICS
oh thank you , I have worked on that for hours!!:)
posted on February 24, 2016 
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 
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 
Research Project on Computer Confidentiality
same problem cant find resouces
posted on September 29, 2010 
Math
ahhh i see. dang, then I got this one wrong on the test. thank you!
posted on February 2, 2010 
Math
Oh okay thank you!
posted on February 2, 2010 
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 
Math
ohh i see it now! thank you!
posted on January 6, 2010 
math
Thanks you! I get it now!
posted on December 8, 2009 
Math
f(x)=10x5*******
posted on November 17, 2009 
Math
Ohh all i needed to do was divide! heh thanks a lot!
posted on November 5, 2009 
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 
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 
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 
Math
thank you! =D
posted on October 8, 2009 
12 BiologyTHIS IS URGENT
but would it change because some of the codons are extracted during the introns excision ??
posted on April 14, 2008