Friday

September 19, 2014

September 19, 2014

Total # Posts: 1,219

**algebra**

What is 80 is 20 times as many as 5 equal in a number sentence?
*March 25, 2013*

**3rd grade math**

it is A. 1/2
*March 20, 2013*

**Physics**

A) With what minimum speed must you toss a 190 g ball straight up to hit the 15.0 m-high roof of the gymnasium if you release the ball 1.70 m above the ground? Solve this problem using energy. B) With what speed does the ball hit the ground?
*March 20, 2013*

**Physics**

A) With what minimum speed must you toss a 190 ball straight up to hit the 15.0 -high roof of the gymnasium if you release the ball 1.70 above the ground? Solve this problem using energy. B) With what speed does the ball hit the ground?
*March 20, 2013*

**4th grade math**

the answer is 168 because there are 12 inches in a foot. you could add 12 for 14 times or do 12*14.
*March 19, 2013*

**Dynamics, Math**

a plane is flying horizontally at an altitude of 420m. A bomb was released, how far horizontally point bomb hit the ground?
*March 19, 2013*

**Dynamics, Math**

a plane is flying horizontally at an altitude of 420m. A bomb was released, how far horizontally point bomb hit the ground?
*March 19, 2013*

**English**

This time management tool is used for recording how you spend your time daily.
*March 13, 2013*

**math**

5x+4y-5z=44 3x-4y+3z=-10 6x-3y+6z=-15 help solve it
*March 13, 2013*

**math**

4x-y-3z=8 2x+2y-z=3 6x+y-3z=2 help me solve matrices
*March 13, 2013*

**english**

so what is correct answer,thanks
*March 8, 2013*

**english**

Answer is A
*March 8, 2013*

**Physics**

A 50.0g ball of clay traveling east at 3.00 m/s collides and sticks together with a 50.0g ball of clay traveling north at 3.50m/s. What is the speed and direction of the resulting ball of clay?
*March 7, 2013*

**Calculus**

Determine if the series converges or diverges. Sum (n=1, infinity) (2*4*6...2n)/n! My main problem is I have no idea what to do with the numerator.
*March 4, 2013*

**Physics**

A conical pendulum is formed by attaching a 0.200kg ball to a 1.00 m-long string, then allowing the mass to move in a horizontal circle of radius 40.0cm . The figure (Figure 1) shows that the string traces out the surface of a cone, hence the name. A) What is the tension in ...
*February 28, 2013*

**Physics**

A 220g block on a 54.0cm -long string swings in a circle on a horizontal, frictionless table at 70.0 rpm. A) What is the speed of the block? m/s B) What is the tension in the string? N
*February 28, 2013*

**Physics**

A 220g block on a 54.0cm -long string swings in a circle on a horizontal, frictionless table at 70.0 rpm. A) What is the speed of the block? m/s B) What is the tension in the string? N
*February 28, 2013*

**maths**

A box of mass 3 units rests on a horizontal rough surface and is tied to the end of a rope. Peter pulls on the rope and exerts a force of magnitude sqrt(2g) with the rope making an angle of Pi/4 with the horizontal. Given that the box is on the point of slipping, show ...
*February 27, 2013*

**Algebra**

the length of a rectangular piece of land is 40 cm more than two times its width. the perimeter is 680 cm. Find its dimensions
*February 26, 2013*

**maths**

A particle moves in a plane with trajectory given by the polar equation, r = a(1 + cos );where a is a positive constant Suppose that the particle moves such that theta(t) =omega for all t; that is, the angular velocity theta is constant.Show that the ...
*February 20, 2013*

**Chem II**

I feel I wasnt given enough information to answer the question originally, but I will try to do my best with what I was given.
*February 12, 2013*

**Chem II**

How many grams of ethylene glycol (C2H6O2) per kilogram of water are needed to give protection up to 120 °C in a car radiator?
*February 12, 2013*

**Calculus**

Approximate the sum Sigma (lower n = 0; upper infinity) (17/3)*(-1/2)^n
*February 11, 2013*

**Calculus**

What is the graph of the sequence An = (-1)^n?
*February 11, 2013*

**Calculus**

Find the sum of the convergent series. Sigma (lower n = 0; upper infinity) 8*(4/5)^n
*February 11, 2013*

**Calculus**

Identify the two series that are the same. a. Sigma (lower n = 4; upper infinity) n(3/4)^n b. Sigma (lower n = 0; upper infinity) (n+1)(3/4)^n c. Sigma (lower n = 1; upper infinity) n(3/4)^(n-1)
*February 11, 2013*

**Calculus**

Find the values of x for which the series converges. Sigma (lower index n = 0; upper index infinity) [(x+1)/4]^n
*February 11, 2013*

**Calculus**

Determine whether the sequence with the given nth term is monotonic. Find the boundedness of the sequence. Otherwise, indicate DNE. An = ne^(-n/2)
*February 11, 2013*

**Calculus**

Determine the convergence or divergence of the series. Indicate the test that was used and justify your answer. Sigma (lower index n = 1; upper index infinity) [(-1)^n*3^n]/(n*2^n)
*February 11, 2013*

**Calculus**

Test for convergence or divergence. Indicate the test that was used and justify your answer. Sigma (lower index n = 2; upper index infinity) [ln(n)]/n
*February 11, 2013*

**Calculus**

Use the Direct Comparison Test to determine the convergence or divergence of the series. Justify your answer and show all of your work. Sigma (lower index n = 1; upper index infinity) 4^n/(3^n-1)
*February 11, 2013*

**Calculus**

Test for convergence or divergence. Indicate the test that was used and justify your answer. Sigma (lower index n = 4; upper index infinity) 1/(3n^2-2n-15)
*February 11, 2013*

**Calculus**

Determine the following about the series. Indicate the test that was used and justify your answer. Sigma (lower index n = 1; upper index infinity) [sin((2n-1)pi/2)]/n A. The series diverges B. The series converges conditionally. C. The series converges absolutely. D. It cannot...
*February 11, 2013*

**Calculus**

Determine the convergence or divergence of the series. Find the limit. Indicate the test that was used and justify your answer by showing evidence why the test succeeds or fails. Sigma (lower index n = 1; upper index infinity) 12/[n(n+3)]
*February 11, 2013*

**Calculus**

A deposit of $1000 is made at the beginning of each month in an account at an annual interest rate of 3% compounded monthly. The balance in the account after n months is An = 1,000(401)(1.0025^n - 1). (a) Compute the first six terms of the sequence {An}. (b) Find the balance ...
*February 11, 2013*

**maths**

What is the vector equation of the line joining the points (5; 0; 1) and (7; 4; 7)?
*February 11, 2013*

**maths**

prove that if a is not equal to zero and if a * b = a * c and a ^ b = a ^ c then b = c [Hint: calculate a * (b-c) and a ^ (b-c) vectors mechanics
*February 6, 2013*

**college chem**

if the length of one side of a square is 12.0, what is the perimeter of the square?
*February 4, 2013*

**Math**

where did the 1.2 come from?
*January 31, 2013*

**Math**

The markup on a used car was at least 20% of its current wholesale price. If the car was sold for $5900, what was the maximum wholesale price? (Give your answer correct to the nearest dollar.)
*January 31, 2013*

**Math**

Write each rate as a fraction in lowest terms: 48 gallons in 14 minutes
*January 29, 2013*

**Math**

Write each rate as a fraction in lowest terms: 48 gallons in 14 minutes
*January 29, 2013*

**Math**

For a certain product, one case holds 8 boxes and each box holds 12 items, how many total cases are needed to hold 500 items?
*January 19, 2013*

**math**

The world's tallest building is the Burj Khalifa in Dubai at 828 m tall. The CN Tower in Toronto is 553 m tall. Ryan wants to compare the Burj Khalifa and the CN Tower by creating rectangular prism models on a 10 cm by 10 cm square base. He has decided to represent the ...
*January 15, 2013*

**math**

A band poster that measures 90 cm by 40 cm is reduced by a scale factor of 1/6 so it can fit on a postcard. a) What are the dimensions of the postcard image? b) By what scale factor, to the nearest hundredth, was the area of the poster decreased in the reduction process?
*January 15, 2013*

**algebra**

Solve the equation. Check your solution. 164=x-59
*January 15, 2013*

**consumer math**

Lily Adams purchased a $1,000 bond at 70. The bond pays 4%. What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)?
*January 14, 2013*

**consumer math**

Lily Adams purchased a $1,000 bond at 70. The bond pays 4%. What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)?
*January 14, 2013*

**consumer math**

Joe McCain purchased 5 $1,000 bonds at 89. The bonds pay 6%. What was the cost of the bonds? $4,450 ? What was the total annual interest? What is the yield?
*January 14, 2013*

**algebra**

What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)?
*January 14, 2013*

**algebra**

Jane Investor purchased a $10,000 bond at 90. The annual interest is 5%.
*January 14, 2013*

**math**

The sides of a square with an area of 49 cm2 will be reduced by a scale factor of 5/8. Determine the area of the reduced square to the nearest square centimetre.
*January 14, 2013*

**math**

Jamia is deciding between two long-distance telephone plans: • Plan A charges $5 per month plus 6¢/min. • Plan B charges $20 per month plus 1¢/min. Jamia usually makes about 200 min of long distance calls each month. Which plan costs less? Show your ...
*January 12, 2013*

**Math **

3(4x+6)+7
*January 7, 2013*

**Algebra**

Kendra owns a restaurant. She decides to charge $1.50 for two eggs and one piece of toast and $0.90 for one egg and one piece of toast. How much money is she charging for each egg and each piece of toast?
*January 3, 2013*

**MAtth**

ITEM NUMBER THREE 1 Description of the item:Printer 2 Stated price on the website: 229.99 (do not round to whole dollars) 3 Website where the item was found:Staples I dont know how to do questions # 4 and 5 4 Price of item after a 10% increase with sales tax: 5 Final price:
*December 18, 2012*

**ENGLISH 9 BIOGRAPHY**

i think u should do jistin bieber because its more easier, if u do one direction then u have to write about 5 people. u can do one direction of that band.
*December 15, 2012*

**Algebra**

The number of bacteria in a stagment pond doubles every hour. A farmer sprays it every two hours and kils 3/4 of bacteria immediately. If there are 10,000 live bacteria left after the farmer sprays at noon, how many live bacteria are there at 11 p.m. that night?
*December 12, 2012*

**My Math**

thanks
*December 11, 2012*

**My Math**

am i correcect steve
*December 11, 2012*

**My Math**

i mean 1b 2c 3c 4a
*December 11, 2012*

**My Math**

I think the answers are 1 c 2a 3b 4a
*December 11, 2012*

**My Math **

ecide whether each equation has one solution, no solutions, or infinitely many solutions. 1. 2(x – 3) = 2x (1 point) one solution no solutions infinitely many solutions 2. 3(y – 3) = 2y – 9 + y (1 point) one solution no solutions infinitely many solutions 3. 10x...
*December 11, 2012*

**math**

f f + (-20) > -7 f = ?
*December 3, 2012*

**political science- PHL**

is it a comprehensive answer? Machiavelli (in terms of political philosophy) Machiavelli was an Italian philosopher. A famous book he wrote is ‘The Prince’ which still have impact to today’s politics. It is about the rise and fall of states and what the leader ...
*December 1, 2012*

**political science- PHL**

how Hobbes, Machiavelli and Rousseau are relevant? little guidance please
*December 1, 2012*

**political science- PHL**

hello can u help me please? write a few words about Machiavelli, Locke and how they are relevant today? John Locke is another philosopher who is considered as relevant today for some of his ideas he expressed. His writings were a great influence to the founders of United ...
*December 1, 2012*

**algebra**

A submarine is 700 meters below the surface of the ocean. it is ascending at a rate of 35 meters every minute. What does x represent and What y represent
*November 27, 2012*

**psych**

1.21 (1 pts.) William is acutely retarded and requires intense care. His IQ has been measured at approximately 15. What term would be used to classify William's level of retardation? A) mild B) moderate C) severe D) profound # 1.22 (1 pts.) Shannon has been diagnosed with...
*November 27, 2012*

**psych**

1.11 (1 pts.) While Pete was out playing touch football with his friends, he tripped, fell, and bumped his head on the ground. Immediately afterward, he was very disoriented and kept asking his friends what time it was. Pete may have experienced A) delirium. B) dementia. C) ...
*November 27, 2012*

**Math**

A merchant makes two raisin nut mixtures. Each box of mixture A contains 9 ounces of peanuts and 2 ounces of raisins, and sells for $2.80. Each box of mixture B contains 12 ounces of peanuts and 4 ounces of raisins, and sells for $4.00. The company has available 5,000 ounces ...
*November 24, 2012*

**physics**

a 10.0 cm cylindrical chamber has a 5.0cm diameter piston attached to one end. The piston is connected to an ideal spring with a spring constant of 10.0N/cm. Initially, the spring is not compressed but is latched in place so that it cannot move. When the cylinder is filled ...
*November 22, 2012*

**Chemistry**

How much heat is given off when 12g of Al at 75 degrees Celsius is colled to 25 degrees Celsius?
*November 19, 2012*

**Intro to Chemistry**

How do you determine the mass of NACL needed to prepare 25.00 ml of a 1.585M NaCl Solution?
*November 19, 2012*

**college finite math**

Find the marginal average cost function: C(x)=10-e^-x
*November 18, 2012*

**Science**

I am studying waves and doing a project. Is the line of origin the same as a waves midpoint?
*November 18, 2012*

**intermediate microeconomics**

is my answer to my question right?
*November 17, 2012*

**intermediate microeconomics**

why is modelling useful, despite being a simplified version of reality? my answer: answer: an economic model attempts to describe every aspect of reality. a models power stems from the elimination of irrelevant detail which allows the economist to focus on the essential ...
*November 17, 2012*

**math of investment**

I need a prayes that is related to the terms of mathemetics of investments. please! thank you!
*November 7, 2012*

**maths**

explain why are the following not groups: 1)the set of Z integers with operation subtraction 2)The set of Z integers with operation addition 3)The set of R* of all non zero real numbers with addition
*October 25, 2012*

**maths**

prove Zn addition is commutative?
*October 25, 2012*

**Math**

I can do the math but what I am having trouble with is What integer expresses the position
*October 24, 2012*

**Math**

Point A is 340 feet above sea level. This is 2/3 of the distance between point B and sea level. What integer expresses the position point B compared to sea level?
*October 24, 2012*

**Math**

since it is below the surface should it be -28 + -6 = -34?
*October 24, 2012*

**math**

write two equations that prove the associative property is not true for division
*October 22, 2012*

**maths**

which one is it steve
*October 20, 2012*

**maths**

binary operation m.n=m2+n is associative or commutative?
*October 20, 2012*

**maths**

x3+6x2+18x+13=0
*October 15, 2012*

**maths**

how do I draw them to prove it.
*October 12, 2012*

**maths**

Let ABC be a triangle in the plane. Find circles C0;C1; : : : ;C6 such that Cj has exactly j points in common with the boundary of ABC (this \boundary" consists of the line segments AB, BC, CA). Is it possible to nd a circle C7 with 7 points in common with the boundary of...
*October 12, 2012*

**maths**

prove that there are no integars p and q such that: (p/q)squared =2
*October 10, 2012*

**maths**

Let ABC be a triangle in the plane. Find circles C0;C1; : : : ;C6 such that Cj has exactly j points in common with the boundary of ABC (this \boundary" consists of the line segments AB, BC, CA). Is it possible to find a circle C7 with 7 points in common with the boundary ...
*October 10, 2012*

**stats**

the head circumferences of adult males have a bell-shaped distribution with the mean= 65cm and standard deviation =2cm. a. what is the head circumference such that only 2.5% of adult males have a smaller head circumference? b. what is the head circumference such that only 2.5...
*October 9, 2012*

**math**

cody has 6 times as many bottle caps in his collection as Rebecca. cody has 36 bottle caps. write an equation to find the number of bottle caps rebecca has,c
*October 9, 2012*

**math**

write an.algebraic equation for autumn has,1 brother. this is 3 less than the number of brothers chase has,b
*October 9, 2012*

**physics**

daredevil jumps 10m wide. he drives a car up a 11 degree incline. what was minimum speed to clear the 10m? acceleration is 9.81
*October 8, 2012*

**Chemistry**

I did the fitrst part and got 46.7 but theresa second part of the question Small amounts of CoO are added to glass to give it a blue color. Calculate the mass percent composition of cobalt in this compound
*October 4, 2012*

**Chemistry **

Portland cement contains some SiO2. Calculate the mass percent composition of silicon in this compound.
*October 4, 2012*

**math**

how would you write an algebraic expression for tthe same number of birds,b, sitting on three different wires, then 9 birds fly off
*October 2, 2012*

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