Tuesday
September 16, 2014

Posts by TOM


Total # Posts: 1,064

math
What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4
April 2, 2013

math
What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4
April 2, 2013

la
do you want our opinion for that?
April 2, 2013

math
Flight Path. In this problem you will use a cosine function to model the flight path of a plane that begins its descent from 20000 ft when it is 45 miles from the airport. Find the fuction p(x)= ACos(wx)+B that that gives the altitude in ft when the plane is x miles from the ...
April 2, 2013

college algebra
How much paper would you need to wrap a box 10cm wide, 25cm high, and 50cm long?
April 2, 2013

calculus
Flight Path. In this problem you will use a cosine function to model the flight path of a plane that begins its descent from 20000 ft when it is 45 miles from the airport. Find the fuction p(x)= ACos(wx)+B that that gives the altitude in ft when the plane is x miles from the ...
April 1, 2013

math
so there's a total of 15 marbles and there's 6 yellow marbles. thus the probability is 6/15
April 1, 2013

math
A firm issues bonds with a face value of 1000, a coupon rate of 7% and that will mature in 10 years and the market yield is 10% and pay interest semiannually what is the value. Please help
March 31, 2013

math
If a company issues bonds with a face value of $1000, a coupon rate of 7%, and that will mature in 10 years. The current market yield is 10%. if the bonds pay interest semiannually, what is the value of the bonds? please he;p with the formula?
March 30, 2013

math
If I need $25,000 in 4 years. Waht amount must i invest today if the investment earns 12% compounded semiannualy?
March 30, 2013

Calculus 2
Hello, I don't know what test to use for this series: Determine the sum of the following series: inf E n=1 (2^n + 9^n) / 12^n thank you!
March 22, 2013

am literature
what does ethos pathos and logos mean
March 17, 2013

Math
Randy throw a base ball straight upwards, releasing it 6 ft above the round, and giving it an initial speed of v = 128 ft/sec. Use the formula h = -16t^2 + vt + 6 ft( where t = time , h = height ) to find the maximum height of the ball to reach this height.
March 15, 2013

math
a factory can produce 45 containers of yogurt in t minutes, 950 grams of fruit are used for every 25 containers of yogurt b) find in terms of t the time taken by the factory to produce 100 containers of yogurt c) if t=6 find the amount of fruit used in producing containers of ...
March 5, 2013

maths and physics
A cannon is placed on a hillside pointing up the hill, where the hill is at an angle a Pi/4 to the horizontal. The cannon points at an angle Pi/6 to the slope. and a shot is red uphill with initial speed v0. (i) Find the maximum value of the distance between the ...
March 3, 2013

physics
A truck of mass 13,100 kg is acted upon by a driving force of 8900 N. The motion is opposed by a frictional force of 2230 N. Find the acceleration.
March 3, 2013

calculus 2
thanks steve!
February 23, 2013

calculus 2
integrate e^(2x) / (e^(4x) + 9) am I allowed to simplify the e^(2x) with the e^(4x)? Thank you
February 23, 2013

I need help
this is the Answer jiskha try it
February 23, 2013

I need help
1:compare and contrast 2:Taxies represent the modern world 3:things that we might not value until it’s too late 4:Nicole and Camille left work, went to the gym, and ate dinner before 7 p.m. 5:intercontinental
February 23, 2013

trig sub question
thank you Steve
February 22, 2013

trig sub question
Hello, I have a question concerning trigonometric substitution. let's say we have integral of dx/sqrt(9x^2 + 4), so after doing a few steps we have: 2/3 integral of sec0/sqrt((2tan0)^2 + 4*) d0 (the * is for later on) the next step turns into: 2/3 integral of sec0/(sqrt(...
February 22, 2013

Math
it was not negative that was a subtraction sign
February 20, 2013

Math
so lets say i had 4w-8-1w i take 4w+1w= 5w then i have -8 left and i do 5w-8
February 20, 2013

Math
help me combine like terms. like how do you do it with different signs in the problem. 17 + 4w - 12 - w
February 20, 2013

marketing
what is market segmentation
February 19, 2013

math
If the digits of a number may be any one of 0 through 9 (except the first digit cannot be zero), and the system of alternating signs of coefficients is used to create a polynomial, what is the least number m of real zeros the polynomial can have? What is the greatest number M ...
February 11, 2013

math
A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions W inches by L inches by cutting out equal squares of side x at each corner and then folding up the sides. (W = 12 in. and L = 20 in). Find the values of x for which the volume is ...
February 9, 2013

math
I am a 2-digit number with a 1-digit decimal. I am bigger than 54 but smaller than 56. 2 of my digits are even. When you divide my whole number by the digit in my decimal place, the answer has no remainder. What are the biggest and smallest numbers I could be?
February 5, 2013

Calculus 2
thanks!
February 2, 2013

Calculus 2
I have this integral that I don't know how to solve: ∫ (x-3)/sqrt(x) Would I multiply both parentheses first? or just turn it into (x-3)(x^-0.5)?
February 2, 2013

calculus
okay so there must be a mistake with the system, thanks for clearing that up Damon.
February 2, 2013

calculus
Using an upper-case "C" for any arbitrary constants, find the general indefinite integral ∫ (-2-t)(-9-t^2) dt Now I multiplied both parentheses to get: ∫ (18 + 2t^2 + 9t + t^3) dt now I integrated and got: 18t + 2t^3/3 + 9t^2/2 + t^4/4 + C but I'm ...
February 2, 2013

Math
2x-5=39 2x=39-5 2x=34 x=17
January 29, 2013

math
come on i waitied almost for 20 minutes and this is what i get. -_- not cool
January 29, 2013

math
A park ranger finds that 35% of the park visitors stay at the campground. Of 105 visitors stayed at the campground in one day, how many visitors did the park have that day? i got 36.75 people and then i rounded and got 37 people.
January 29, 2013

calculus
Thank Steve. But how do you get 60 or 70? or the -1?
January 28, 2013

calculus
it's integral, not interal, sorry for the mistake
January 28, 2013

calculus
find the derivative of: g(x) = interal(a=7x, b=6x) (u+5)/(u-5) du Hint: interal(a=7x, b=6x) (u+5)/(u-5) du = interal(a=0, b=6x) (u+5)/(u-5) du + interal(a=7x, b=0) (u+5)/(u-5) du
January 28, 2013

math
EXPLAIN HOW YOU CAN BREAK 6X7 ARRAY IN TO SMALLER ARRAYS .WHAT ARE THE NEW FACTS?
January 28, 2013

Physics
pickett!!!
January 27, 2013

math
If a farm as 13 heads and 36 feet. How many chicken are there and how many rabbit are there?
January 25, 2013

math
If a farm as 13 heads and 36 feet. How many chicken are there and how many rabbit are there?
January 25, 2013

physics
nevermind, got it, had to switch calculator from degrees to radian, hehe
January 23, 2013

physics
The displacement of a particle in centimeters is given by y=8 sin (2πft). If f=20 Hz, find the displacement and the velocity of the particle at a time t=0.01 s and 0.07 s. (ans: y=7.61 cm, v=3.11 m/s, y=4.70 cm, v= -8.13 m/s) After I plug in f to get w and switch to this ...
January 23, 2013

ANSWER MY QUESTION
IS AN ATOM AN ELEMENT
January 22, 2013

chemistry
is a element an atom?
January 22, 2013

math help
340-127=213pages in the morning before the afternoon 253-213=40pages read in the afternoon
January 22, 2013

Pol 201 American National Goverment
some of these answers are wrong, do not trust them.
January 20, 2013

Physics
Suppose you have a very long straw that can reach from a cup of water on the ground level to the top of a very tall building. When you use a pump to suck on the straw in order to bring water up, a. you can bring the water up to any height with no problem. b. you can bring the ...
January 18, 2013

Pre-Algebra
3.25 for one batch of cookie 16.5/3.25= ___ batches of cookies
January 17, 2013

math
x=5 6x5=30+4=34
January 17, 2013

science
nvm i see it
January 17, 2013

science
Au-gold ag-sliver sn-tin hg-mercury pb-lead k-potassium w-tungsten fe-iron that's not what i meant. what does each abrevation mean in latin? the orgin name?
January 17, 2013

science
What are the orgin names for these abbreviation? in latin Au-gold ag-sliver sn-tin hg-mercury pb-lead k-potassium w-tungsten fe-tron
January 17, 2013

Physics
I should indeed have formulated this a lot clearer. I have done an experiment in which I add a stationary point to the standard pendulum situation, which creates a period function dependent on both the length of the pendulum as on the height of the stationary point which ...
January 7, 2013

Physics
Hello everyone, I have made measurements of the periods of a pendulum attached to a stationary point at a certain height h. When plotting the periods as a function of the square root of the length minus the height it gives us a straight line. I now need to prove that this line...
January 7, 2013

Chemistry
How many joules ar required to heat a frozen can of juice (360 grams) from -5 degrees C (the temp of an overcooled refrigerator) to 110 degrees C (the highest practical temp within a microwave oven)?
January 5, 2013

math
A video rental store has 1,234 videos on the shelves. OF the videos 1/3 were rated PG and 1/2 were rated PG-13. What equation can be used to find v, the total number of PG and PG 13 videos in the store?
December 29, 2012

math
if A [] B = A^B-(A+B), 7 [] 9 = ?
December 25, 2012

maths
Express sin 2x cos 4x as a sum of trigonometric functions
December 24, 2012

maths stats
For each day of the 5-day working week Tom can choose any one of 6 newspapers to read at the lunchtime. (i) How many different choices are possible in a week? (ii) If Tom wants to read a different title each day, then how many different choices are possible in a week?
December 23, 2012

Physics
Amy age 8 27kg 127cm Bruce age 12 41kg 149cm Both Amy and Bruce are learning gymnastics and having trouble being able to get enough height and time in the air to do a back somersault without the coach spotting them. The coach gives them homework to just focus on jumping ...
December 15, 2012

math problem
To make an orange dye, 4 parts of red dye are mixed with 3 parts of yellow dye. To make a green dye, 2 parts of blue dye are mixed with 1 part of yellow dye. If equal amounts of green dye and orange dye are mixed,___________ of this mixture is composed of yellow dye.
December 13, 2012

math
According to the statistics of a famous high school in Canada, all their graduates went to either A or B for university study. Following are the proportions of graduates who went to the two universities. University Proportion A 1-k B k Suppose k = 0.4 (a) What is the standard ...
December 9, 2012

Alegbra 1
Mr. Jones got his car washed at super clean. The wash started at 1:55pm and ended at 2:05pm. It cost $7. Mr. Smith got his car washed at Super Clean for $12. the wash started at 9:30am and ended at 9:50 am. Write an equation for the line that represents this situation. Part 2...
December 5, 2012

programming
There are several types of room in a hotel. The HotelRoom Class of Previous Programming Problem was not specific regarding the type of room. Assume that a hotel has guest rooms and meeting rooms. Modify the HotelRoom class as follows: remove the capacity and status instance ...
November 30, 2012

Physics
A 2.50 kg wheel has a diameter of 20.0 cm and is rotating at 3600 rpm. A force acts on it causing it to come to a rest in 10.0 seconds. What is the magnitude of the force?
November 26, 2012

Chemistry
No problem :)
November 24, 2012

Chemistry
For the online course, 1)b and 2)c
November 24, 2012

eng
is the sentence: "By using a statement that began with 'I,' Ramon was able to state his feelings clearly." a simple sentence or a complex sentence?
November 20, 2012

Physics HELP!
The position of an object connected to a spring varies with time according to the expression x = (7.1 cm) sin (2.1π t). Find (a) the period of this motion (b) the frequency of the motion (c) the amplitude of the motion (d) the first time after t=0 that the object reaches ...
November 19, 2012

math
a mystery number is bigger than 50 and larger than 100. you can make exactly five different rectangles with the mystery number of tiles. its prime factorization consists of only one prime number. what is the number
November 14, 2012

math
a mystery number is bigger than 50 and larger than 100. you can make exactly five different rectangles with the mystery number of tiles. its prime factorization consists of only one prime number. what is the number
November 14, 2012

Physics
The boom of a crane is 20 m long and is inclined 20ᵒ from the horizontal. A bucket of cement with a mass of 3000 kg is suspended from the upper end of the boom. What is the torque acting on the point where the boom is attached to the crane? A. 5.5 x 105 Nm. B. 3.5 x 105 ...
November 13, 2012

psychometric test
Hi i have been given an experiment paper on personality, in this we have to come up with an updated version of Eysencks (EPI) questionnaire. This is to measure extroversion only ,we are measuring concurrent validity. Im having difficult in answering the co varibles which is my...
November 13, 2012

Algebra
help me solve this equation by substitution. y^2− 4x^2 = 7 9y^2+16x^2 = 323
November 9, 2012

chemistry
ryeng i suppose? this is a very easy question 392.4*10-10= x cm xcm^3= ycm^3 ycm^3* 21.09= mass in grams since face centered unit cell has 4 atoms mass/4, then use the product of that to divide by 1.66*10^-24 = amu your result should be 191.84 amu
November 8, 2012

Chemistry
How do I change 3,3,4,4,5,5-hexamethyl-1-hexyne into it's molecular formula
November 8, 2012

physics
the coefficients of static and kinetic friction for stone on wood are, respectively, 0.5 and 0.4. if a 150 kg stone statue is pushed with just enough force to start moving across a wooden floor and the same force continues to act afterward. find the statue’s acceleration.
November 7, 2012

Calc 2
Use Taylor’s Estimate to bound the error of the n-th order Maclaurin approximation of sin(a), where a 2 [��; ].
November 3, 2012

home economics
a firm produces 20 units of output at a market price of #5, a marginal cost of $5, and an average cost of $3. what is the firms economic profit and is the firm maiximizing its economic profit. Is the formula market price-average cost x quantity 20?
November 2, 2012

physics
For a glass lens submerged in water (n=1.33), the critical angle of incidence at which total internal reflection begins to happen is 60.1 degrees. What is the index of refraction of the glass?
November 2, 2012

physics
A 67.5 kg hoop rolls along a horizontal floor so that its center of mass has a speed of 0.090 m/s. How much work must be done to stop it?
October 30, 2012

physics
What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)
October 30, 2012

physics
What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)
October 29, 2012

physics
What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)
October 29, 2012

Physics- Elena please help!!!!
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/ min. When switched off, it rotates through 41.0 revolutions before coming to rest. (a) Find the angular speed in rad/s. (b) Find the displacement in radians. (c) Find the constant angular ...
October 29, 2012

physics
What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)
October 29, 2012

Math
If 7x + 5 = -2, find the value of 8x.
October 25, 2012

Math
If 7x + 5 = -2, find the value of 8x.
October 25, 2012

eco365
You should be ashamed of yourselve
October 24, 2012

Algebra 1
Say x is the number of boxes sold in week 1, then: Boxes in week 1: x Boxes in week 2: x + 5 Boxes in week 3: 2x + 10 Total boxes = 4x + 15 4x + 15 = 431 x = 104 So in week 1 there was sold x = 104 in week 2: x + 5 = 109 in week 3: 2x + 10 = 218
October 24, 2012

Algebra 1
integer 1 = a integer 2 = b b-a = 1 (b is one more than a) b-7 = 2*a (b is seven more than two times a) a = b-1 b-7 = 2*(b-1) b-7 = 2b-2 b = -5 so a should be -6 answer is C)
October 24, 2012

Physical Science
630J
October 22, 2012

Chemistry
Dear sir, madam, I am having a little problem with the solution my chemistry book gives on the following problem: We have a person whose body vitamine C concentration decays according to the following formula: 1500*0,974^t. Question A is no problem, but then question B: "...
October 17, 2012

Math
angle ABC ~= angle ACB BD perpendicular AC The sum fo the three angles in any triangle is 180 degree. Prove: mangle CBD = 1/2 mangle BAC
October 14, 2012

Math
ÚABC ~= ÚACB BD perpendicular AC The sum fo the three angles in any triangle is 180 degree. Prove: mÚCBD = 1/2 mÚBAC
October 14, 2012

PHY 101
A 0.425-kg blue bead slides on a frictionless, curved wire, starting from rest at point where h = 1.50 m. At point , the blue bead collides elastically with a 0.675-kg green bead at rest. Find the maximum height the green bead rises as it moves up the wire. PLEASE HELP I HAVE...
October 6, 2012

science
What happens when you burn magnesium metal using the big idea of energy?
October 6, 2012

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Next>>

Search
Members