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August 22, 2014

Posts by anonymous


Total # Posts: 69,770

math ratio
a:b = 10:15 b:c = 15:18 c:d = 18:48 a:b:c:d = 10:15:18:48
April 27, 2014

math
between 8:00 and 8:30, A has gone 15 km The speed difference B-A = 15 km/hr So, since B is 15km behind A at 8:30, it will take 1 hour to make up the distance.
April 27, 2014

CALCULUS
pi, not pai dx/dt = 12sin^2(t)cos(t) dy/dt = -21cos^2(t)sin(t) dx/dt and dy/dt are both zero when sin(2t)=0, or at multiples of pi/2. So, the open intervals are (0,pi/2),(pi/2,pi),(pi/3pi/2),(3pi/2,2pi). The graph bears this out: enter parametric plot x=4sin^3(t), y=7cos^3(t) ...
April 27, 2014

College algebra
This year the state highway department in Montana purchased 276 identical trucks for official use. The purchased price was 5,680,088. Due to budget shortfall next year the department plans to purchase only 69 cars and 119 trucks. It will be charged the same price for each car ...
April 27, 2014

informal logic
To criticize a deductive argument logically, one might:
April 27, 2014

ag 1
The average daily high temperature for the month of may in ocaia Florida is appromaimated by thee function. F(n)=0.2n+80. Where n is the day of the month
April 27, 2014

grammer
My sister and I share a three year age gap as she is twenty one while I am eighteen. how to improve this sentence
April 27, 2014

grammer
In addition to having common personality traits with my mother, I also play the same two instruments my mother did when she was young. How to improve this sentence?
April 27, 2014

Precalculus
Sets A,B and C are subsets of U. U= positive integers less than 16 A= prime numbers B= factors of 36 C= multiples of 4 (A intersect B)' union C {?} My answer: 1,4,5,6,7,8,9,10,11,12,13,14,15 union 4,8,12 {4,8,12}
April 26, 2014

Calculus Help Please Urgent!!!
a) Estimate the area under the graph of f(x)=7+4x^2 from x=-1 to x=2 using three rectangles and right endpoints. R3= ??? Then improve your estimate by using six rectangles. R6= ??? Sketch the curve and the approximating rectangles for R3 and R6? b) Repeat part (a) using left ...
April 26, 2014

English help
I'm writing an essay about something that is worth dying for. For me, something that is worth dying for is my religion. How would I write it about religion? Need help!!
April 26, 2014

chemistry
how many grams of HCL is needed to produce 200 grams of hydrogen?
April 26, 2014

Science
7.D 8.C
April 26, 2014

Science
my answers: 1.A 2.C 3.D 4.B 5.B 6.A 7.DC 8.
April 26, 2014

Science
1. If the net force on an object is O N, the forces are considered unbalanced true false 2. Most people in the united states use feet and miles to measure distance in their everyday lives. why do scientist in the United States use meters to measure distance? Meters allow ...
April 26, 2014

Math
I'm extemely lost at some point, how do you solve this equation by using the inverse of the coefficient matrix and by echelon method -x-8y=12 3x+24y=-36
April 26, 2014

Language arts
If you had to write a creative story what would it be about?
April 26, 2014

finance
If the average new home costs $ 275,000 today, how much will it cost in 10 years if the price increases by 5 percent each year?
April 26, 2014

Math
3.14x8=your answer Pie times the radius
April 26, 2014

science
Why are there usually more producer in an ecosystem than consumers? a). There is less energy available to the consumers. b). There is more energy available to the consumers. My answer is ( a ).
April 26, 2014

physics
A stone is dropped from the deck of the bridge. The sound of the splash reaches the deck 3 seconds later. If sound travels at 342 m/s in still air, how high is the deck of bridge above the water?
April 26, 2014

Math
(2 + sqrt 2)/(2 - sqrt 2) = (x)/(3 + sqrt 10) How to solve for x?
April 26, 2014

Math
Thanks, but can you please verify how you got the (2√5 + 5)? Because I thought that √5 * (2+√5) would be 2√25.
April 25, 2014

Math
(sqrt 5)/(2 - sqrt 5)
April 25, 2014

chemistry urgent!
what is the net ionic for these following balanced equations: 2(NH4)3PO4(aq) + 3Ba(OH)2(aq) -> Ba(PO4)2(s) + 6H2O(l) + 6NH3(g) 2HNO3(aq) + K2CO3(aq) -> H2O(l) + CO2(g) +2KNO3 NaF(aq) + HCl(aq) -> NaCl(aq) + HF(aq)
April 25, 2014

Algebra 1
Yes.
April 25, 2014

business math
On May 1, Emerson Fast bought 10 Manitoba On May 1, Emerson Fast bought 10 Manitoba Polar bonds with a coupon rate of 7.875%. The purchase price was $101. 375, and the commission was $8 per bond. Manitoba Polar bonds pay interest on April 1 and October 1. Polar bonds with a ...
April 25, 2014

Algebra
The formula.
April 25, 2014

Algebra
That's exactly what it said in the textbook.
April 25, 2014

Algebra
The equation r = (sqrt A)/(pi) gives the radius r of circle with area A. What is the radius of a circle with the given area? Write your answer as a simplified radical and as a decimal rounded to the nearest hundredth. a. 50 ft^2
April 25, 2014

calculus help
At time t=0, an astronaut stands on a platform 3 meters above the moon's surface and throws a rock directly upward with an initial velocity of 32 m/sec. if the acceleration due to gravity is 1.6 m/sec^2. a) find the equations of motion for the throwing of this rock. -1. a(...
April 25, 2014

Math
Please Help!!
April 25, 2014

Math
It doesn't make sense!!!
April 25, 2014

Math
I did 175.2 multiplied by 0.7134 then I rounded to get 125. So I dont get how to get the answer!!!
April 25, 2014

Math
52
April 25, 2014

Math
During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M=176-0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per minute of 125? A.52 ...
April 25, 2014

Math
Solve the equation and write the answer in simplified radical form. n^2 - 2n + 1 = 5
April 25, 2014

Math
(16a)/(sqrt 6a^3)
April 25, 2014

Math
M=11*
April 25, 2014

Math
Find the value of the variables in the table: X= n, 4, 6, 10, 12. Y= 1, 9, m, 21, 25 n=0 Y=11?
April 25, 2014

Algebra
Can you explain how we do that? Also, the answer key says ab^2 sqrt abc.
April 25, 2014

Algebra
(sqrt a^3 b^5 c^3)
April 25, 2014

Math
1.Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric? A.The sequence is geometric because it decreases by a factor of 6. B.The sequence is arithmetic because it decreases by a factor of 6 C.The sequence is geometric because it decreases by a factor of 1/18...
April 25, 2014

Geometery help
Well, you move 5 units right and 5 units up. So, move five units up from (4,5), which is (4,10).
April 25, 2014

math
a person was climbing on a building. He slips 1 m for every 5 metre he climbs up. If the building is 53 m high and he takes 5 seconds to climb 1 metre find the total time taken by him to get on the top of the building.
April 25, 2014

math
represent an equivalent fraction to 3/4 as 1)a fraction and 2)a picture
April 25, 2014

environmental science
What are some of The Blue Plains Water Advanced Wastewater Treatment Plant standards of
April 25, 2014

trignometry
Tan4x=4tanx(1-tan^x)/1-6tan^x+tan^^x ,prove
April 25, 2014

Algebra
When a polynomial is divided by x+3, the quotient is x^3+x^2-4 and the remainder is 8. Find the dividend?
April 24, 2014

Algebra
(√(2m)^-3)/(m^-1)
April 24, 2014

Algebra
When a polynomial is divided by x+3, the quotient is x^3+x^2-4 and the remainder is 8. Find the dividend?
April 24, 2014

Calculus Help Please Urgent!!!
At time t=0, an astronaut stands on a platform 3 meters above the moon's surface and throws a rock directly upward with an initial velocity of 32 m/sec. if the acceleration due to gravity is 1.6 m/sec^2. a) find the equations of motion for the throwing of this rock. b) how...
April 24, 2014

chemistry
13. A student mixes 100.0 mL of 0.500 M AgNO3 with 100.0 mL of 0.500 M CaCl2. (8 points) a. Write the balanced molecular equation for the reaction. b. Write the net I onic equation for the reaction. c. How many grams of precipitate will form? d. What is the concentration of Ag...
April 24, 2014

Algebra
Find the constant c such that the denominator divides evenly into the numerator. (x^4 - 3x^2 + c)/( x+6)
April 24, 2014

Algebra
(√5a^-2)/(√10a^-1)
April 24, 2014

Music
So, I have to split a song into its form, like ABAA, ABBA, and so on. I need help with doing that to the song "Wake Me Up" by Avicii. I get confused whenever I try to. Please help me?
April 24, 2014

Math
360(degrees in a circle) 40(given) so 360/40=9 Multiply that by two(because theres two pizzas) so 18 people.
April 24, 2014

Math - Answer Check
Jeff hiked 2/3 distance from Lookout Point to Eagle Station then stopped for lunch. How far had he hiked? Lookout Point to Eagle Station: 2 1/10 I got 1 13/30 but it's not an answer choice.
April 24, 2014

Grammar
There are no such things as unicorns or ghosts. There are no such things as unicorns nor ghosts. Which sentence is correct?
April 24, 2014

Math
Thanks! I get it completely now :).
April 24, 2014

Math
How did √(3f^3) become f√(3f)? That's the part I'm confused about.
April 24, 2014

Math
How to simplify? (√3)/(√f^-3)
April 24, 2014

science
The link works for me. Anyway, if it does actually lead you to the homepage, then just search about the formation of the Andes Mountains on your own.
April 24, 2014

Algebra
How did you get the 1/(f√f)?
April 24, 2014

Algebra
How to simplify? (√3)/(√f^-3)
April 24, 2014

Chemistry
How many grams of sodium acetate, NaC2H3O2, would have to be added to 5.00 L of 0.65 M acetic acid (pKa 4.74) to make the solution a buffer for pH 4.00?
April 24, 2014

math
how do you make a coordinate plane for the function of a person who weighs 130 pounds that burns 300 calories in 1 hour,600 calories in 2 hours,900 calories in 3 hours and 1200 calories in 4 hours
April 24, 2014

Algebra
That's okay, I figured it out.
April 24, 2014

Algebra
How to simplify: sqrt(3x^3)/(64x^2) The whole thing is under the radical.
April 24, 2014

algebra
What is the y-intercept for line A, considering these answers (0,1/2),(1/2,0), (0,-1) and (-1,0).
April 24, 2014

algebra
What is the slope of line A if the answers are -2, 1/2, -1/2 and 2.
April 24, 2014

Algebra ll
thank you, Steve :)
April 24, 2014

Physics
A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.
April 24, 2014

math problem
what is 4/5 of 230
April 24, 2014

math
transversal
April 24, 2014

Chemistry
What is the azimuthal quantum number (also called the angular-momentum quantum number), ℓ, for the orbital shown here? (the photo is a d orbital. it has 4 balls around it) Express your answer numerically as an integer.
April 24, 2014

science
Birds share many different characteristics. List three of these.
April 24, 2014

Chemistry
An astrophysicist working at an observatory is interested in finding clouds of hydrogen in the galaxy. Usually hydrogen is detected by looking for the Balmer series of spectral lines in the visible spectrum. Unfortunately, the instrument that detects hydrogen emission spectra ...
April 24, 2014

Chemistry
6.626 x 10^-34/ m x 1.26 times 10^5 what is plugged in for the mass if it is not given?
April 24, 2014

Chemistry
What is the de Broglie wavelength of an electron traveling at 1.26×105m/s ?
April 24, 2014

trig
16cos(x)-3sec(x)=0 Find all solutions for x in [0, 2pi)
April 23, 2014

math
Kyle reduced his investment in Collins Company from $11,700 to $4,300. What was the percentage rate of decrease?
April 23, 2014

Math
A rectangular backyard measures 15 meters by 20 meters.there is a square flower bed in the middle of the yard with three sides of 3 meters.what is the area of the yard only?
April 23, 2014

Algebra
7(√6/32) I did: 7(√6/32) * (√32/√32) 7(√192/32) ...but then what?
April 23, 2014

Math
A sidewalk borders a rectangular play area.the play area measures 20ft by14ft.the width of the sidewalk is 2 ft.what is the perimeter of the outside borders of the sidewalk?
April 23, 2014

Biology help
How does a gene determine a trait?
April 23, 2014

Math
(6/7c)^2 Is this 6/7c^2?
April 23, 2014

Algebra
I multiplied (√6/√32) by (√32/√32).
April 23, 2014

Algebra
7(√6/32) I came until 7(√192/32). How do I proceed from here?
April 23, 2014

algebra
(12*50) + (16*50) = ?
April 23, 2014

algebra
Gabby walks 12 blocks east from school and then 16 blocks south and each block is 50 yards how far is Gabby from school in yards?
April 23, 2014

math
1third * 1 hafl
April 23, 2014

Math 70
At a county fair, an adult ticket sold for $6.00, a senior citizen’s ticket for $4.50, and a child’s ticket for $2.00. On Friday, the number of adults and senior citizen’s tickets sold was 5 more than the number of children’s tickets sold. The number of ...
April 23, 2014

Physics
A golf ball, mass 0.048 kg, rests on a tee. It is struck by a golf club with an effective mass of 0.225 kg and a speed of 44 m/s. Assuming the collision is elastic, find the speed of the ball when it leaves the tee (remember: you can not assume the club is at rest after the ...
April 23, 2014

physics
Assume that the dots in the painting are separated by 1.0 mm and that the wavelength of the light is vacuum= 500 nm. Find the distance at which the dots can just be resolved by (a) the eye and (b) the camera. I know that the resolving equation is (angle)min = 1.22(wavelength...
April 23, 2014

Algebra
(-1/3)√18c^5 * (-6√8c^9) 2√144c^14 ---> I came until here but then didn't know how to proceed.
April 23, 2014

Science
We just learned about mitosis and my teacher is giving a test over it and other things tomorrow. We have to write the mitosis steps in order, label the chomatids, nuclear membrane, spindle fibers, and centrioles, and have a sentence describing them. How could I remember this?
April 23, 2014

calculus help for Steve
When I put your answer into WebAssign it marked as wrong so are you sure this is the right answer?
April 23, 2014

calculus help
A particle is moving with the given data. Find the position of the particle. a(t)= (t^2 - 5t +7) , s(0)=0 , s(1)=20 Thanks!
April 23, 2014

biology
GCCATGTT GCGTACTT C --> G A --> T T --> A G --> C all of these are transversion (pyrimidine changing to purine)
April 23, 2014

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