Thursday

October 30, 2014

October 30, 2014

Total # Posts: 73,545

**Geometry/Algebra**

What is the slope-intercept form of the equation y – 7 = –5/2 (x + 4)? y – 2 = –5/2(x + 2) y + 7 = –x + 5/2 y = –4/7+ 2 y = –5/2x – 3 (I keep coming up with y=5/2(x+4)+7 2. Distribute 5/2 y=(5/2x) + 10 + 7 3. Simplify. y=(5/2)x + 17 and ...
*October 28, 2014*

**Calculus HELP PLEASE!**

Need help on this problem please! Been stuck for half hour trying to figure it out but I can't get through a. A and B look to be similar but I don't know how to do them! Please help! ----------------------------------- The resistance of blood flow, R, in a blood vessel...
*October 28, 2014*

**English**

So I thought she can be both round and static.
*October 28, 2014*

**English**

Round means that the character is developed. Static means the character doesn't change over the story, right?
*October 28, 2014*

**English **

Would Della from Gift of the Magi be a round and static character?
*October 28, 2014*

**BIology**

I answered your question.
*October 28, 2014*

**Physics**

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant...
*October 28, 2014*

**Physics**

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant...
*October 28, 2014*

**Physics**

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant...
*October 28, 2014*

**Biology**

Highly folded membranes allow for more surface area to maximize absorption of key nutrients that a cell may require. An organelle with such highly folded membranes can be endoplasmic reticulum. The many folds result in more surface area for ribosomes to attach and thus ...
*October 28, 2014*

**Calculus**

A human cannonball is shot from a cannon at a speed of 21 meters per second at an angle of 20 degrees; how long before his height is 0? How far did he travel in that time?
*October 28, 2014*

**Algebra**

-2^3
*October 28, 2014*

**Algebra**

-2*3 = -8, right?
*October 28, 2014*

**Algebra**

K(x) = -3x^4 + 5x^3 - x + 7 for x = -2. K(-2) = -79
*October 28, 2014*

**Social Studies**

I don't understand Ms. Sue
*October 28, 2014*

**physics**

What is the angular momentum of a 2.43 kg uniform cylindrical grinding wheel of radius 12.5 cm when rotating at 1600 rpm? (b) How much torque is required to stop it in 8.00 s?
*October 28, 2014*

**algebra**

a stick 36 cm long is cut into two pieces in the ratio 1:2 how is each piece show the answer
*October 28, 2014*

**math**

A teacher is making multiple copies of a 1-page homework assignment. The time it takes her in seconds is 2 times the number of copies she makes plus 3
*October 28, 2014*

**Algebra**

Would x + 3 be a factor of 3x^3+ 5x^2 2x - 12? Ans: No, because there is a remainder of -54.
*October 28, 2014*

**Algebra**

(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))
*October 28, 2014*

**Physics**

It does but i dont know how to get it in the box
*October 28, 2014*

**Physics**

A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 56.2° and a speed of v1 = 24.8 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum of the...
*October 28, 2014*

**Calculus **

The mass, M, of a child can be approximated based on the height, H, of the child. The height of the child can be projected based on the child's age, A. a) State the chain rule for the derivative of the mass with respect to age (ie. find dM/dA) b) Suppose that an allometric...
*October 28, 2014*

**Calculus 1**

The resistance of blood flow, R, in a blood vessel is dependent on the length of the blood vessel, the radius of the blood vessel, and the viscosity of the blood. This relationship is given by R = 8Lη/πr^4 where r is the radius, L is the length, and the positive ...
*October 28, 2014*

**Calculus 1**

The resistance of blood flow, R, in a blood vessel is dependent on the length of the blood vessel, the radius of the blood vessel, and the viscosity of the blood. This relationship is given by R = 8Lη/πr^4 where r is the radius, L is the length, and the positive ...
*October 28, 2014*

**Physics**

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of ...
*October 28, 2014*

**Calculus 1**

The mass, M, of a child can be approximated based on the height, H, of the child. The height of the child can be projected based on the child's age, A. a) State the chain rule for the derivative of the mass with respect to age (ie. find dM/dA) b) Suppose that an allometric...
*October 28, 2014*

**History**

Mrs.Sue please Help me D;
*October 28, 2014*

**History**

4. South Carolina responded to the Intolerable Acts by __________. (1 point) holding small “tea parties” in Charles Town and Georgetown sending representatives to the First Continental Congress drafting a state constitution and setting up a new government boycotting ...
*October 28, 2014*

**Algebra**

(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))
*October 28, 2014*

**Math HELP!**

Point A(6,-2) is reflected over the x axis. Write the coordinates of A' A. (6,2) B. (6,-2) C. (-6,2) D. (-6,-2) Is the answer A? Thank you
*October 28, 2014*

**Social Studies**

so what is it?
*October 28, 2014*

**Social Studies**

What challenges must Cyprus overcome to reunify? Explain your ideas about this topic and suggest ways that Cyprus could work to solve its challenges of diversity.
*October 28, 2014*

**Social Studies**

Explain your ideas about this topic and suggest ways that Cyprus could work to solve its challenges of diversity.
*October 28, 2014*

**Math HELP!**

Use arrow notation to write a rule that describes the translation of a point from (5,6) to (6,11). A. (x,y) ----> (x+1,y+5) B. (x,y) ----> (x-1,y-5) C. (x,y) ----> (x-1,y+5) D. (x,y) ----> (x+1,y-5) Is the answer A? Thank you
*October 28, 2014*

**Math help**

Translate P(4,0) right 3 units and up 5 units. Give the coordinates of the image point. A. (-5,1) B. (1,-5) C. (5,7) D. (7,5) Is the answer D? Thank you
*October 28, 2014*

**math just practice**

um excuses me, what's that supposed to mean? I would like an apology please and im reporting you just called me dumb im never coming on this sight again I hate ms. sue
*October 28, 2014*

**math**

A rectangle has one side on the x-axis and two vertices on the curve y=6/{1+x^2}. Find the vertices of the rectangle with maximum area. Vertices =
*October 28, 2014*

**Statistics**

A simple random sample of 60 items resulted in a sample mean of 64. The population standard deviation is 16. a. Compute the 95% confidence interval for the population mean (to 1 decimal).
*October 28, 2014*

**Physic **

6. A car is moving along a straight road at 60 mph [26.7 meter/sec ]. The driver makes slams on his breaks locking them so that the car skid s to a stop. Assume a constant braking force due to friction , and a kinetic friction coefficient of 0.70 between the tires and the road...
*October 28, 2014*

**statistics**

Two different samples drawn independently from the two district yielded the following results: District X: 1 x = 648, 2 1 s = 120, and 1 n = 100 District Y: 2 x = 495, 2 2 s = 140, and 2 n = 90 Verify at 0.05 level of significance whether the sample results support the claim ...
*October 28, 2014*

**physics**

2. A spring of spring constant 220 N/m is sitting on a table. You pick it up and stretch it so that it is 8.0 cm longer than it was on the table top. How much work did it take you to stretch the spring? (Hint: This work is just negative the work done by the spring on you!)
*October 28, 2014*

**algebra math**

An employee makes an hourly rate plus any tips they earn. This tip employee made a total of $400 by working 28 hours last week. If $253 of their total earnings was their tips, what is their hourly rate of pay? a. $5.25 b. $5.61 c. $8.82 d. $9.04
*October 28, 2014*

**Physics**

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of ...
*October 28, 2014*

**Physics **

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of ...
*October 28, 2014*

**stats**

AARP reported on a study conducted to learn howlong it takes individuals to prepare their federal income tax return (AARP Bulletin, April 2008). The data contained in the file named TaxReturn are consistent with the study results. These data provide the time in hours required ...
*October 27, 2014*

**Algebra**

(x^2 + 4x + 1) / (x - 5) = x + 9 + (46/(x - 5))?
*October 27, 2014*

**math**

A box of chalk and 2 staplers cost $10 Three boxes of chalk and 2 staplers cost $18. Find the total cost of 1 box of chalk and 1 stapler?
*October 27, 2014*

**Pre Algebra**

1. B 2. Is that the full problem 3. Is that the full problem 4.B
*October 27, 2014*

**math 7**

a model house is 12 cm wide if it was built with a scale of 3cm and 4m than how wide is the real house
*October 27, 2014*

**Physics**

An ideal spring with a force constant (spring constant) of 15 N/m is initially compressed by 3.0 cm from its uncompressed position. How much work is required to compress the spring an additional 4.0 cm?
*October 27, 2014*

**Math**

1/2C-1/2(8) Try solving from here:
*October 27, 2014*

**physics**

A 35.2 kg wagon is towed up a hill inclined at 18.3◦ with respect to the horizontal. The tow rope is parallel to the incline and exerts a force of 125 N on the wagon. Assume that the wagon starts from rest at the bottom of the hill, and disregard friction. The ...
*October 27, 2014*

**science**

12. A 13.D 14.C 16.D
*October 27, 2014*

**Pre-Algebra**

Can someone post the answers, please don't put the wrong ones someone has done it and gave me all wrong answers..............
*October 27, 2014*

**government**

What are his/her opponents saying about Donna Edwards? Describe at least 2 charges or accusations
*October 27, 2014*

**government**

what about hid one? Constitutional Amendment for women's equal rights.
*October 27, 2014*

**government**

Voted YES on enforcing against anti-gay hate crimes.
*October 27, 2014*

**government**

“enforcing against anti-gay hate crimes, what about this one
*October 27, 2014*

**government**

NO on banning federal health coverage that includes abortion. does this mean she doesnt support abortion
*October 27, 2014*

**Physics**

In the movie Superman, Lois Lane falls from a building and is caught by the diving superhero. Assuming that Lois, with a mass of 45 kg, is falling at a terminal velocity of 56 m/s, A)how much force does Superman exert on her if it takes 0.7 s to slow her to a stop? B)If Lois ...
*October 27, 2014*

**Grades**

If I have an 80 in my class, and I get a 70 on my test which is 33.33% of my grade, what will my overall grade become
*October 27, 2014*

**medication**

what works better for headaches motrin or advil
*October 27, 2014*

**government**

when you research A politician what do u learn about politics
*October 27, 2014*

**can someone please help me with sign language**

1. GO STORE _____ EAT LUNCH. (I went to the store and then I ate lunch.) (1 point) HAPPEN FINISH WRONG FIND 2. TONIGHT GO SEE MOVIE ______ CLOSE! (I went to see a movie tonight and it was closed!) (1 point) FIND WRONG HIT b and c
*October 27, 2014*

**can someone please help me with sign language**

can someone please help me with sign language
*October 27, 2014*

**Physics**

A car, moving along a straight stretch of highway, begins to accelerate at 0.0235 m/s 2 It takes the car 67.8 s to cover 1 km.How fast was the car going when it first began to accelerate?
*October 27, 2014*

**Physics**

In the movie Superman, Lois Lane falls from a building and is caught by the diving superhero. Assuming that Lois, with a mass of 45 kg, is falling at a terminal velocity of 56 m/s, A)how much force does Superman exert on her if it takes 0.7 s to slow her to a stop? B)If Lois ...
*October 27, 2014*

**Physics**

The initial speed of a body is 3.01 m/s. What is its speed after 3.89 s if it accelerates uniformly at 3.63 m/s 2 ? Answer in units of m/s
*October 27, 2014*

**Physics**

What is the minimum energy needed to change the speed of a 1600 kg sport utility vehicle from 15.0 m/s to 40.0 m/s?
*October 27, 2014*

**physics**

A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2 . What is the speed of the car after it has traveled 67 m? Answer in units of m/s 014 (part 2 of 2) 10.0 points How long does it take the car to travel 67 m? Answer in units of s
*October 27, 2014*

**physics**

The velocity v(t) of a particle is plotted as a function of time. The scale on the horizontal axis is 9 s per grid square and on the vertical axis 2 m/s per grid square. Initially, the particle is at x0 = 43 m.
*October 27, 2014*

**physics**

016 (part 1 of 2) 10.0 points A speedboat increases in speed from 17.9 m/s to 31.8 m/s in a distance 188 m. Find the magnitude of its acceleration.
*October 27, 2014*

**government**

Donna Edwards What are 3 major issues the candidate believes in?
*October 27, 2014*

**physics**

A 65kg astronaut (including spacesuit and equipment), is floating at rest a distance of 6m from the spaceship when she runs out of oxygen and fuel to power her back to the spaceship. She removes her oxygen tank (3.0 kg) and flings it away from the ship at a speed of 15 m/s ...
*October 27, 2014*

**Physics**

A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
*October 27, 2014*

**government**

1. "Find a local candidate: Name, Office he/she is seeking, political party" so i live in maryland so would a local one be Joni Ernst
*October 27, 2014*

**Pre-Calc/Trig**

oh okay thanks!
*October 27, 2014*

**Pre-Calc/Trig**

y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)
*October 27, 2014*

**health**

Oblique muscles are an example of which muscle feature? A. Direction of fibers B. Shape C. Size D. Location
*October 27, 2014*

**physics**

A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
*October 27, 2014*

**physics**

A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
*October 27, 2014*

**Pre-Calc/Trig**

Oh okay thank you, it's very clear now!
*October 27, 2014*

**Pre-Calc/Trig**

How?? I only know how to convert standard form functions into intercept form, but I do not understand how to do this. Convert the functions into standard form. 1.y=2(x-4)(x+3) 2.y-2=-3(x+4)^2
*October 27, 2014*

**physics**

A person is pulled to the right on a sled (total mass of 60.1 kg) across the surface of a frozen pond with a force of 62.9 Newtons so that they move with a constant velocity. What is the force of friction acting on the sled? Choose your coordinate system so that upward, and to...
*October 27, 2014*

**Pre-Calc/Trig**

I have looked this up, but still cant figure out what it is.. What is the projectile motion function?
*October 27, 2014*

**Algebra**

(2a - b)^3 = 8a^3 - 8a^2b + 4ab^2 - b^3 7x^3(2x + 3) = 14x^4 + 21x^3
*October 27, 2014*

**Science 8A Electromagnetism**

I did that experiment last year. The strength of a solenoid is how well it functions as a magnet. With one trial, put x number of loops and see how many paper clips (or any other metal object) are attracted. With the next trial, put y number of loops with the same metal object...
*October 27, 2014*

**Pre-Calc/Trig**

thank you!
*October 27, 2014*

**Pre-Calc/Trig**

I'm not sure on how to solve this. :/ A farmer wishes to enclose a pasture that is bordered on one side by a river (so one of the four sides won't require fencing). She has decided to create a rectangular shape for the area, and will use barbed wire to create the ...
*October 27, 2014*

**Algebra**

(2x + 5y)(3x^2 - 4xy + 2y^2) = 6x^3 - 8xy + 4xy^2 + 15x^2y - 20xy^2 + 10y^3
*October 27, 2014*

**algebra 2**

A skydiver jumps from an airplane at an altitude of 2,500 ft. He falls under the force of gravity until he opens his parachute at an altitude of 1,000 ft. Approximately how long does the jumper fall before he opens his chute?
*October 27, 2014*

**Calculus - PLEASE HELP!**

Thank you!
*October 27, 2014*

**Calculus**

A person whose height is 6 feet is walking away from the base of a streetlight along a straight path at 4 feet per second. If the height of the streetlight is 15 feet, what is the rate at which the person's shadow is lengthening?
*October 27, 2014*

**Calculus **

If y=sqrt (x^2+16), then d^2y/dx^2=?
*October 27, 2014*

**Calculus**

A sphere is increasing in volume at the rate of 3(pi) cm^3/sec. At what rate is the radius changing when the radius is 1/2 cm? The volume of a sphere is given by V=4/3(pi)r^2 A. pi cm/sec B. 3 cm/sec C. 2 cm/sec D. 1 cm/sec E. .5 cm/sec
*October 27, 2014*

**Calculus**

If (x+2y)dy/dx=2x-y, what is the value of d^2y/dx^2 at the point (3,0)? A. -10/3 B. 0 C. 2 D. 10/3 E. Undefined
*October 27, 2014*

**Calculus**

If f(x)=sqrt (x^2-4) and g(x)=3x-2, then the derivative of f(g(x)) at x=3 is A. 7/sqrt 5 B. 14/sqrt 5 C. 18/sqrt 5 D. 15/sqrt 21 E. 30/sqrt 21
*October 27, 2014*

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