
math, physics
A. A rectangular slab of concrete is cut from a large block. The slab measures 10.4 inches thick, 1.8 feet long, and 0.0021 miles wide. Find its volume in cubic feet.
asked by Steph on September 6, 2012 
math
side of the cube increasing at rate of 6 cm/s. find the rate of increase of the volume when the length of a side is 9 cm.[ans 1458cm^3/s] my answer: ~729x6=4374cm^3/s i need some1 show me the calculation if im wrong.
asked by susan on July 22, 2011 
CONTROL SYSTEM
HELP,PLS HELP..I NEED ANSWER FOR ECEN 4413 AUTOMATIC CONTROL SYSTEMS SPRING 2005 MIDTERM EXAM..I CANNOT FIND ANSWERS IN THE INTERNET.PLS HELP IF YOU KNOW WHERE TO DOWNLOAD THE SOLUTION MANUAL..OR YOU KNOW THE ANSWER!!THANK YOU
asked by HEEELLLLPP! on October 5, 2013 
chemistry
when a 2 litre reaction vessel in which 15 grammes of pcl5 had been placed and mantained at 250 degrees celsius until equilibrium was established and found that 364grammes of cl2 remained in the vessel .find the Kc at this temperature and reaction
asked by claren nyahondo on October 10, 2018 
quantum physics
Can anyone help me to solve this problem? Suppose we have a particle in 1dimension, with wavefunction Ae^(âˆ’x2d). What is the probability to find the particle in the interval [0,d]? Please provide your answer in terms of A, d, mathematical
asked by Judy on October 7, 2013 
Physics(Please respond)
1) A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 407 m and ignoring air resistance, find the speed with which the penny strikes the ground. I am not sure how to start this. Thank you!
asked by Hannah on May 26, 2012 
statistics
an airline has a policy of booking as many as 24 person on an airplane that can seat only 23 (past studies have revealed that only 94 % of booked passengers actually arrive for the flight) find the probability that if the airline booked 24 persons, not
asked by katelynn on November 15, 2013 
Chemistry
The decomposition of dinitrogen tetroxide produces nitrogen dioxide: N2O4 (g) > 2 NO2(g) ΔG°= 2.80 kJ/mol Find the minimum partial pressure of N2O4 at which the reaction is spontaneous if P(NO2)=2.00 bar and T=298 K.
asked by Kerrie on June 12, 2012 
Statistics
A box contains five red, three blue, and two white poker chips. Two are selected without replacement. For example, BR is a possible outcome representing the first is blue and the second is a red. BR and RB are different outcomes. a. list the sample space.
asked by Brandon on October 14, 2008 
Business Math
Ignacio obtains a loan of $9,500, at 8.75% interest, for months. Find the amount of simple interest. (Round to the nearest cent) $598.78 $658.07 $701.36 $825.55 The answer I got was $658.07, is that right?
asked by Tee on July 6, 2013 
maths
P(6,3), Q(3,7), and R(4,2) are three points in a plane. A is the midpoint of QR and B is the foot of the perpendicular from Q to PR. Find; (A) the cordinates of A; (B) the equations of the lines PA and QB; (C) the point of intersection of the lines PA and
asked by matt on April 28, 2019 
algebra
I don't know how to do this it sais In the accompanying diagram, ABCD is a rectangle inscribed in circle o. the ratio of side AB to side BC is 4:3. The area of the rectangle is 48 square centimeters. A B o D C This is how it looks and its telling me to
asked by Anonymous on September 25, 2008 
english
How can teaching someone else what you have learned from your reading help you understand it? The other person can pass a test about the information. The other person can tell you whether it is interesting. You will be forced to consider and clarify tough
asked by oscar on September 5, 2015 
Physics
an ambulance starts its motion from rest at a hospital and accelerates at a rate of 1.60 m/s^2 for 14.0 s. after that, it travels at constant speed for 70.0 s, and it the slows down at a rate of 3.5 m/s^2 until it stops (vf=o m/s) at the accident seen.
asked by 010203 on September 29, 2012 
Math
I Want To Find A Way To Impress My Math Teacher, But I Cant Think Of Any Ways To, My Teacher Doesent Allow Extra Credit, And I Really Want A Good Grade!!!! I'm In 8th Grade And I'm DOing Online School, GIVE ME FEEDBACK AND ANSWERS PLEZ! THANKS! :D
asked by mynameismrhen2 on October 16, 2018 
What is a good quote for Romeo and Juliet?
What is a good quote for me to explain that it is important to think before you act? In the play, Romeo and Juliet? Thanks Allyson I was thinking of something between Romeo and Juliet themselves, it would be helpful in my essay. I've already searched
asked by Allyson on May 11, 2011 
Differential Equations
A car is traveling at 70 mph skids 240 ft after it's breaks are suddenly applied. Assuming that the cars breaking system provides a constant deceleration, find that deceleration. How long did it take the car to stop?
asked by Jenna on June 19, 2011 
Science
Does anyone know anything about respiration?? Cause I have to do this chart thing and it says: Respiration uses glucose and oxygen to produce carbon dioxide and water and water is used to carry out all _________. I don't know what the blank is I have read
asked by Kelsie on November 5, 2008 
Calculus
Consider a rectangle cardboard box without top and bottom. The diagonal of the box has length 1. Use lagrange multipliers to find the maximum surface area of the paper used to make this box. What are the dimensions of this optimal box?
asked by ally on March 29, 2019 
physics please help
A 8.6 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 186 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.
asked by tim on November 16, 2010 
Math
If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, it height in feet after t second is given by y=95t–16t2. Find the average velocity for the time period beginning when t=2 and lasting i) 0.1 seconds ii) 0.01 seconds
asked by Jennifer on October 15, 2010 
calculus
When a certain polyatomic has undergoes adiabatic expansion, it’s pressure p and volume V satisfy the equation pV^1.3 = k, where k is a constant. Find the relationship between the rates of change in pressure and volume over time. Show and explain each
asked by joe on January 9, 2019 
maths urgent please
Hi, a particle is moving in simple harmonic motion such that a = 4x. ( x in metres, t in seconds) Find the maximum speed at which the particle is travelling. Velocity = 6cos2t. My teacher said to put t = 0 and sub it into velocity equation above, but I
asked by Michelle on July 18, 2012 
Math
It costs $17 per square foot to buy and install a certain kind of tile on a floor. Find the cost of buying and installing that tile in a large rectangular room that measures 8.5 yards by 15 yards.
asked by Lateashea on October 6, 2015 
Maths
an astronaut is to be fire into an elliptical orbit about the eathr having a minimum altitude of 800km and maximum altitude of 5400km find the equation of the curve followed by the astronaut cosider the radius of the earth to be 6400km
asked by Anonymous on January 6, 2019 
science
i need ti find a type of scentists that start with the letters j,w,and y help me? Is that three scientists: one starting with j, one with w, and one with y OR one scientist with Jwr????? wich is the largest see wich is the largest sea
asked by mallory on September 13, 2006 
math
A rectangular slab of concrete is cut from a large block. The slab measures 10.4 inches thick, 1.8 feet long, and 0.0021 miles wide. Find its volume in cubic feet.
asked by Tyler on September 6, 2012 
Math...again
A quality control inspector found flaws in 13 out of 150 sweaters. Find the probabillity that a sweater has a flaw. Round to nearest tenth of a % But what if the company produces 500 sweaters, how many will NOT have flaws
asked by Marco on May 14, 2008 
Physics
Amechanic pushes a 2.50*10^3 kg car from rest to a speed of v, doing 5.00*10^3 Jof work in the process, During this time, the car moves 25.0m. Neglecting friction between car and road, find (a) v and (b) the horizontal force exerted on the car
asked by Anynomous on August 4, 2019 
Algebra111111!!!
Choose the ordered pair that is a solution to the system of equations. x + y = 12 x + 2y = 3 a. (7, 5) b. (5, 7) c. (7, 5) d. (7, 5) e. none of the above This question wants you to find the point of intersection of the two lines, provided they're not
asked by Margie on October 14, 2006 
Math
In Rochester parking garage, the levels are 23 feet apart. Each upramp to the next level is 114 feet long. Find the measure of the angle of elevation of the incline for each ramp to the nearest tenth of a degree.
asked by Jacqueline on April 21, 2008 
math
its a challenge question. For each speed, find how much time it will take the students to reach these cities on their route: 1. Atlantic City, New Jersey, about 320 miles from Norfolk. 2. Baltimore, Maryland, about 3/4 of the way from Norfolk to Atlantic.
asked by mazia on October 9, 2008 
physics
a macopolo of a mass 1200000g travelling at 72km/h is brought to rest in 4s.with the aid of a diagram,find its (a)average retardation (b)average breaking distance (c)the total distance moved during deceleration
asked by mukosha on February 10, 2016 
math
The mass m(t) remaining after t days from a 70 g sample of thorium234 is given by the equation shown below. m(t) = 70e0.0274t Find the halflife of thorium234. (Round your answer to the nearest tenth.)
asked by Anonymous on March 13, 2010 
algebra 1 stat question
fastest recorded speeds of various large wild cats (miles per hour) 70,50,30,40,35,30,30,40,15. The standard deviation of is 14.01 and the mean is 37.7 I have created a dot plot of the data and now I need to find out within how many standard deviations of
asked by AR on September 9, 2012 
Algebra
You have 400 feet of fencing to enclose a rectangular plot. Find the length and width of the plot that will maximize the area. What is the largest area that can be enclosed? I'm not sure how to start. We haven't learned this yet in class.
asked by Taylor on January 12, 2016 
physics
a truck running along a straight line increases its speed uniformly from 30m/s to 60m/s over a time interval 1 min find the uniform acceleration and the distance travelled during this time interval.
asked by ken on May 19, 2012 
Thermodynamics again.
For the following problem... I found the second pressure by solving P1V1/T1 = P2V2/T2. The Volumes is const so those cancel and then i am able to find the P2. From there i looked at the 1st law and came up with delt U = Qin which = mCvdelta T but that is
asked by jody on June 16, 2007 
Trigonometry
I'm trying to find the cosecant of 11 pi/6. The answer is 2, but I'm not sure where this came from. I thought You would flip the sine value which was sq. root of 3/2, making it 2/sq. root of three, which would then become sq. root of 6 over 3 or sq. root
asked by Delia on December 10, 2009 
Estimating decimal quotient
Use compatible to find the following quotient 180.8 divided by 6 182divided by 11 55divided by 10.7 117.8divided by 0.12 0.6 divided by 5 145 divided by 0.3 60 divided by 5.9 1.8 divided by 20
asked by David on October 19, 2014 
Math Prob Stat
In a Gallop Poll, 35% 1823 year old's stated that they believe in ghosts. Find the probability that out of 16 students aged 1823: A. Exactly 5 said they believed in ghosts. B. Exactly 5 said they do not believe in ghosts. C.Less than 11 said they do not
asked by Kate on May 25, 2016 
Math
The five sales people at Southwest Appliances earned commissions last year of $13,000, $22,000, $47,000, $15,000, and $24,000. Find the mean commission.
asked by Jacqueline on September 18, 2015 
Math
angle theta is in the standard position and 0'=
asked by Han on June 11, 2014 
statistics
I have been working on this problem (and looking through my book and the internet) and could use direction. Info given: P(A or B)=.85 (A has line over it) P(A and B)= .41 (A has line over it) P(A or B)=.21 (A and B have line over it) Find P(A/B) (B has a
asked by Lori on October 27, 2010 
maths
A deck has 52 cards it has 13 in each type find the probability of getting a) a diamond card b) an ace card c) a red card d) a yellow card e) getting any card
asked by John on October 25, 2014 
college
let i = the square root of 1 with i to the 1st power =i, i to the 2nd power= 1, i to the 3rd power =i , i to the 4th power=1 find ito the power 215
asked by kate on July 5, 2010 
math
find the probability of spinning each of the following p (7) 1/7* 1/8 3/8 7/8 P(not 7) 1/7 1/8 5/8 7/8 P(a multiple of 2) 0.25 0.5 0.625 0.75 which event has the greatest likelihood spinning 7 spinning not 7 spinning a multiply of 2 spinning a factor of 12
asked by Anonymous on May 25, 2017 
Biology ( Ms.Sue help)
Which one of the following is a trans fatty acid found in most snack foods? A. Stearic acid B. Carboxyl acid C. Oleic acid D. Elaidic acid I've been trying to find this answer all day and I have no idea.
asked by Brooklyn on June 24, 2015 
English
Which of the following assertions about love is contradicted by the tale of Pyramus and Thisbe? A. Love cannot be forbidden. B. Love can always find a way. C. Love is always illfated. D. Love is like a flame that burns hot. I am guessing B?
asked by Asther on January 7, 2015 
trig
If theta is the measure of an angle in standard position with the given conditions, find the quadrant(s) in which the terminal side of theta lies. a) cot theta < 0 b) cos theta > 0 , csc theta < 0
asked by Anonymous on January 26, 2012 
algerbra
i have to simply the expression 3x squared10+4x+8x squared, so far i have this 1x squared+4x2 3x squared1xsqaured+4x 10+8 2x squared+4x2 i know its kinda confusing becasue i type sqaured so many time, am i on the right track?how do i find the answer
asked by julie on September 22, 2009 
Social Studies
Which Reconstruction plan divided the South into military districts? Choices are: A. the 100% plan B. Johnson's plan C. Lincoln's plan D. the Radical Republican plan Please help. Cant find answer.
asked by Samantha on February 17, 2012 
Pre algebra
The perimeter of a rectangle is 10 m. Twice the width is equal to one half the length. Find the length and the width.
asked by Anonymous on March 18, 2016 
matj
The difference of two numbers is 12. Two fifths of the greater number is six more than onethird of the lesser number. Find both numbers.
asked by evelyn on October 1, 2010 
algebra
P=2L+2W. Find the perimeter of a rectangle whose length measures 12 centimeters and whose width measures 5 centimeters.
asked by Michelle on June 18, 2012 
parallell and perpendicular lines
please check my homework given P(7,2) and the line y + 3x=7 find the equation for the line parallel line: y+3x+7 y=3(x7) +7 y2=3x+21+7 y=3x+28+2 y=3x+30 perpendicular line: y2=1/3(x7) +7 y2=1/3x7/3 +21/3 y2==1/3x + 14 y=1/3x + 14 +2 y=1/3x +16
asked by luckybee on February 19, 2012 
math
Find the smallest positive whole number with exactly ten positive factors and list the factors.
asked by Joe on March 7, 2010 
TRIG
if sin s = 5 /13 and sin t 3/5 s is in QIII t is in QIV find tan (st) i got that tan (st)= 56/53 is that right? can someone check my work?
asked by John on March 5, 2009 
MATHS
fIND THE VALUE OF THETA,given that theta is greater than zero but less than 360 degrees,given that sec(3theta/2  48 degrees)+ 2 = 0
asked by victor.m on February 7, 2012 
Math 120
If a force of 5 pounds stretches the spring 2 inches, find K. How far will 18 pounds stretch the spring
asked by Kim on July 15, 2012 
Calculus I
Find the derivative ** (sq root) y = (square root) x + (2nd sq root) x + (3rd sq root) x ** All the x's is under three sq roots y' = 1/2(sq rt) x + 1/(sq rt) x + 3/2(sq rt) x Is this right?
asked by Priscilla on April 10, 2012 
Math
The sums of n terms of two arithmetic series are in ratio of 2n+1:2n1. Find the ratio of their 10th terms.
asked by Prince on November 25, 2016 
algebra
the speed of light is about 1.86 x 10^5 miles per second. find the speed of light in (a) km per second, (b) km/min, (c) m/h. (a mile is approximately 1.61 km.)
asked by sella on October 29, 2012 
math
find the area of the trapezoid A.95 units2 B.190 units2 C.150 units2 D.300 units2
asked by Xxcody~kunxX on March 18, 2016 
physics 1
a simple pendulum is used to measured the value of g.when the lenght of the pendulum is 98.5cm, the period is measured to be 2s.Find the value of g?
asked by diane dc on May 15, 2017 
ALgebra
the difference of two numbers is 5. three times the smaller number is two more than twice the larger number. find the numbers
asked by mike on October 30, 2010 
Algebra
Describe how an exponential function changes as the base increases. What is an "exponential function" and how would I find the answer? Thank you! :)
asked by Cassie on March 30, 2009 
History/American Government
Find one difference between the Arizona state constitution and the US Constitution. Explain why you think this difference occurred.
asked by bean on March 28, 2017 
Calculus
A 15.2F capacitor has an initial voltage of 2.00 V. It is charged with a current given by i=tã5=t^2. Find the voltage across the capacitor at 1.75 seconds.
asked by Tim on August 21, 2012 
trig
Find a numerical value of one trigonometric function of x if secxcotx=4 A.cscx=1/4 b.secx=4 c.secx=1/4 d.cscx=4
asked by lan on May 8, 2011 
Calc 3
Find the parametric equations for the tangent line to the curve with the given parametric equations at specified point. x= e^t y=te^t z=te^(t^2) (1,0,0)
asked by Rebecca on November 10, 2010 
chemistry
Use the initial pH of the acetic acid solution to find the initial [H3O+] and initial [CH3COO]. I have an initial pH of 2.2 Thanks
asked by Sarah on April 6, 2008 
trig
how do you find all the values of theta from 0 degrees through 360 degrees for which sin theta equals 0
asked by jen on August 18, 2011 
math
Find the ratio of the area of triangle XBY to the area of triangle ABC for the given measurements, if BY = 3, YC = 2
asked by Anonymous on June 6, 2011 
calculus
dy/dx= (2x2xy)/(x^2+2y) find all points on the curve where x=2. show there is a horizontal tangent to the curve at one of those points.
asked by sara on October 30, 2007 
math
the intergral (10 4 (2x^2+3x+1)dx i have to find the sum of the intergral using right and left endpts when n=3. I am confused on how to even start this or how to use these endpts.
asked by sam on June 3, 2008 
Math
Find an equation of the parabola that has the indicated vertex and whose graph passes through the given point Vertex:2,1 Point:4,3
asked by Marie on December 6, 2014 
trig
THE SIDE OF A RIGHTANGLED TRIANGLE ARE 3XCM,3X1CM AND 4X PLUS 1CM ,THE LAST SIDE BEING THE HYPOTHENUS FIND X.
asked by JULIE on October 11, 2011 
math
find the area of the region described: shared by the cardiods r = 2(1+cos theta) and r = 2(1cos theta)
asked by leena on March 3, 2008 
Algebra
Find the y and xintercepts for the equation. Then graph the equation. Does y come first in the solution? I figured that: the first solution is (0,3) is this correct? and is x = to {3/7,0}? Thanks! f(x) =  3  7x
asked by Rachale on March 2, 2009 
Math
Suppose S and T are mutually exclusive events. Find P(S or T) if P(S) = 29% and P(T) = 49%. What equation would I use for this question? What if they were not mutually exclusive?
asked by M, S, E, on May 9, 2017 
MATH
THE DIFFERENCE BETWEEN TWO NUMBERS IS 16. FIVE TIMES THE SMALLER IS THE SAME AS 8 LESS THAN THREE TIMES THE LARGER. FIND THE NUMBERS? HOW DO YOU SOLVE THIS? PLEASE.
asked by CHLOE on February 11, 2008 
human services
where can I find information on reinforcement affect theory? I need information on the population that it is used and the theory of helping.
asked by patiance on January 11, 2011 
geometry
A sphere has a surface area of 32in².If the diameter is halved, find the surface area.
asked by Edith on March 1, 2012 
Maths
Terry is 25 years older than Ron. in 5 years, he will be twice as old as Ron. Find their present ages.
asked by Shalini on June 21, 2016 
grammer
find the error?? The client’s hospital stay was prolonged, do to a superinfection. client’s/stay was/do to
asked by dan on February 10, 2017 
Math
How do I figure these 2 out. Find standard form a +bi (4 square root 9) ( 3 square root 5) x^2 3x+4 evaluated for x=1+i
asked by lt on March 1, 2009 
Trignometry
5sin thita +12cos theta=13 then find the value of 5cos thita 12sin theta
asked by MOHD SIKANDAR on June 20, 2019 
Language arts
I have to find symbolism and repetition in a poem. I know what the repetition is I just wanted to know if personification is a form of symbolism. Please help!
asked by Crazyface1212 on March 19, 2015 
algebra1
find each sum,difference,or product. If the sum or difference does not exist, write impossible. if A=[5 2 7 B=[2 9 3 C=[4 2 D=[37 22 1 0 13 12 4 7 9 7 5 12 3 8 6] 6 2 5] 15 33] 11 0] 1.A+B 2.B+C 3.C+D 4.DB 5.AB 6.DC 7.2D 8.4B 9.3A 10.3C
asked by QP on September 15, 2010 
Pre calculus
Find the value for sin(theta), cos(2 theta)=3/4 and 270 degrees
asked by Leslie on May 5, 2016 
math
An edge of a cube is increased by 10%. Find the percent by which the surface area o fa cube has increased?
asked by Swati on February 19, 2012 
algebra 2
The width of a rectangle is 3ft less than the length, the area is 4ft^2 find the length and width
asked by Fred on November 16, 2008 
Math
Let f(x) be a cubic polynomial function such that y=13(x1)+4 is tangent to the graph of f(x)at (1, 4) and y=(x+1)+6 is tangent to the graph of f(x) at (1, 6). Find the equation of f(x)
asked by Holly on October 4, 2016 
Career
My major is business management. where can i find some examples of resumes for a business management fits
asked by Bryan on March 29, 2010 
maths
ABCDE is a Pentagon with BE parallel to CD and BC parallel to DE. BC is perpendicular to CD. if the perimeter of ABCDE is 21cm. Find the value of x and y.
asked by geometry on July 11, 2014 
Calc 3
Find the parametric equations for the tangent line to the curve with the given parametric equations at specified point. x= e^t y=te^t z=te^(t^2) (1,0,0)
asked by Rebecca on November 10, 2010 
Calculus
Using the derivative definition of f ‘ (x) = (f (x+h) – f (x)) / (h) find the derivatives of the following… 1. f(x) = (2x1) / (x+2) 2. f(x) = sqrt (3x1) 3. f(x) = 3x^4 my answers were: 1. –x+3 2. (3) / [2(sqrt(3x1))] 3. 12x^3 are my answers
asked by Michelle on October 4, 2008 
Algebra
Find all the real square roots of 0.0036 A. 0.06 and 0.06 B. 0.0018 and 0.0018 C. 0.1897 and 0.1897 D. 0.6 and 0.6
asked by Algebra on February 26, 2019 
Maths
If O is the centre of the circle and the area of sector OAPB is 5/18 of the area of circle . Find angle.
asked by Shruti katiyar on January 2, 2013
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