
algebra help!!!!
Add: b^−3 ca^−1 −xc^−2 how would i do this ? Let me make sure I have the question right. We have b^(−3) ca(^−1) −xc^(−2 )=? You might also write this as (1/b^3) c(1/a) − x(1/c)= c/(a*b^3)  x/c=? If this is correct, then find a common
asked by jessica on September 27, 2006 
math
a circular pizza box logo has a sector with a central angle of 80 degrees and a diameter of 16 inches. Find the area of this sector
asked by G on April 23, 2014 
Physics
The motion of a blockspring system is described by x(t) = A sin(ùt). Find ù, if the potential energy equals the kinetic energy at t = 6.11 s. I'm really not sure how to solve this. It seems that you need more information, either x or A? I appreciate any
asked by Bruce on July 13, 2012 
Math
Consider the following test scores obtained by a class. Test score 90 80 70 60 50 Frequency 1 4 11 6 2 Find the standard deviation (rounded to the nearest hundredth).
asked by Debin on December 4, 2012 
Calculus
Solve : sec^2(x)= ã3*tanx + 1 on [0,radian180 degrees)  couldn't find the symbol for radian on computer please try and explain how you got your answer best as yu can thanks so much :)
asked by Jack on September 11, 2010 
Maths (really hard)
The points A(1,5) and B(9,3) are part of a triangle Î”ABC. The triangle has a right angle at A and and sides satisfy AB=2AC. Find a point C such that C lies above the line AB.
asked by Steven on November 1, 2016 
CALC
Find the volume of the solid obtained by revolving the region bounded by y=(19/3)x(19/3)x^2 and the xaxis around the xaxis. Keep answer in terms of pi PLease explain each step
asked by SARAH on June 29, 2016 
Math
What is the minimum value of N that will make this statement true: If we pick any N composite numbers from 1 to 1000, then we can find 2 numbers whose greatest common divisor is not 1.
asked by Andy on February 15, 2013 
physics please help
Two carts with masses of 4.20 kg and 2.44 kg move toward each other on a frictionless track with speeds of 4.92 m/s and 3.87 m/s respectively. The carts stick together after colliding headon. Find the final speed.
asked by Noah on October 28, 2014 
history
does anyone know of a quote said by truman that expressed his fear that stalin would take over the world? Please only post a link if there is a direct quote like this on it. I've tried to look on wikipedia and other websites but i cannot find one.
asked by kay on May 27, 2009 
physics
Find the turn ratio in a transformer which deliver a voltage of 120volts in the secondary coil form a primary voltage at 60v. Please someone should help me with this
asked by khalid idris on January 14, 2016 
Math  Calc 2/Algebra
I'm trying to find the partial fraction decomposition of: 10x^2+2x2/x^2(x+1) I already found B=2 and C=6 Plugging in the numbers, I get: 10x^2+2x2=Ax(x+1)+(2)(x+1)+(6)x^2 How do I solve this for A? Maybe this is just some algebra that I'm rusty on. But
asked by Anonymous on June 29, 2017 
Math
Find the exact ratio of the equator to the distance around the Earth at latitude 45 degrees north. (Assume the Earth is a perfect sphere.)
asked by simone on April 22, 2017 
Statitics
How to find mean, standard devation , confedince interval 95%, t= test , pvaule and do a hypo test using data? Short 25 Average 5 No Preference. 10
asked by jame on December 6, 2013 
Math
The function defined below satisfies Rolle's Theorem on the given interval. Find the value of c in the interval (0,1) where f'(c)=0. f(x) = x3  2x2 + x, [0, 1] Round your answer to two decimal places.
asked by Bri on November 1, 2016 
Data Management  12
The length of sunfish in Grenadier pond are normally distributed with a mean of 15cm. Find the standar deviation to one decimal place. If 91% of these fish have a length less than 17.7 cm.
asked by Mike on March 24, 2009 
Algebra
You have 50 yards of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
asked by Hayley on October 17, 2010 
ScienceElements
which of the alchemy symbols is used today with a completely different meaning? what does that symbol mean today? I couldn't find the information for this in my text, I think it's iron, but I'm not sure, your help will be appreciated, thanks
asked by Sara on March 29, 2010 
Brief Calc
e^x y =3 find dy/dx using implicit differentiation the answer is y Compare your answer with the result obtained by first solving for y as a function of x and then taking the derivative. y=? dy/dx=? help me out with these last two please I don't know what
asked by James on September 25, 2013 
English
I need 3 important quotes from the book Iqbal by francesso d'adamo I found one which is about Iqbal Masib who ran away from the Carpet Factory. I need 2 more but I can't find any. Can you please help me?
asked by hannah on December 11, 2016 
Algebra
1.) f(x) = 3x  7 and g(x) = 2x  6. Find (f ° g)(4) 2.) What is the inverse of the given relation? y = 3x + 12 3.) Rewrite ^3 sqrt 27x  81  5 to make it easy to graph using translation. Describe the graph. I need help with my last 3 questions.
asked by / on February 18, 2018 
Physics
Consider a force F = 815 N pulling 3 blocks of masses m1 = 7.94 kg, m2 = 15.3 kg, and m3 = 32.4 kg along a frictionless horizontal surface. Find the acceleration a of the blocks. Answer in units of m/s2.
asked by Priscilla on October 9, 2012 
Math  Calculus I
Optimization Problem: Find the dimensions of the right circular cylinder of greatest volume inscribed in a right circular cone of radius 10" and height 24"
asked by Alex on December 5, 2013 
Chemistry
What acid or base will you expect to find as a constituent of a) baking soda b) vinegar c) gastric juice d) soda ash e) lye
asked by BabyMikee on March 1, 2012 
Calculus
A rectangular page is to contain 97 square inches of print. The margins on each side are 1 inch. Find the dimensions of the page such that the least amount of paper is used.
asked by Ari on March 1, 2018 
Math
f(x) = 3x^2 , g(x) = 3x1, and m(x) = 4x Find and simplify the composition function g(m(f(x))) answers i got which were wrong 3x1(12x^3) 36x^412x^3 Maybe i am putting the information in incorrectly.. Should it look like this (3x^2(4x(3x^2))) then solve?
asked by taylor on November 21, 2014 
trig
Please help me solve this problem. I have a test tomorrow and I do not understand at all. Determine all solutions of the equations in radians. Find cos x/2, given that cos x = 1/4 and x terminates in 0 < x < π/2.
asked by Mandy on May 3, 2010 
math
mudd flats is shaped like a rectangle 9 mi long and 4 mi wide. the town has a population of 66,290. find the population per square mile?
asked by brayan on February 14, 2013 
Math
Find 2 solutions to the equation 3x+5y=10. Write the solutions as ordered pairs. This is on my math study guide for our final and she already took up our text books. please help me!
asked by Gaby on May 31, 2009 
math
If $8000 is invested in an account for which interest is compounded continuously, find the amount of the investment at the end of 12 years for the following interest rates. a) 2% b) 3% c) 4.5% d) 7%
asked by Anonymous on February 20, 2014 
Math (PreAlgebra) 8thG
Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. V = (4/3)3.14(r)^3 = (formula) I don't know what to do about the fraction, four over three (4/3), in the formula.... Show me how to do this please?
asked by LovelyDec0y on February 18, 2013 
algebra
A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.9 102 µm. Find this earthquake's magnitude on the Richter scale.
asked by Sharon on September 1, 2011 
statistics
5 men, 1 woman and a chold are to be seated around a round table with seven seats. Find the no. of ways they may have be arranged if the woman and the child must sit together.
asked by im on January 15, 2016 
Physics
5. Three charges, Q1 = 10µC, Q2 = 8µC and Q3 = 7µC are lying along a straight line. Q1 is one meter away from Q2 and Q2 is one meter away from Q3. Find the net electric force on Q1
asked by Mark jay on April 20, 2017 
algebra
the length of a rectangle is 25cm twice its width the perimeter of the table must be less than 335 cm.find the maximum dimensions of the table if each dimension is an interger
asked by Deon on November 13, 2011 
math please help
Find the area of triangle ABC if AB = BC = 12 and
asked by Gem on April 1, 2015 
Science
A person moves 30m north, then 20m east and finally 30 root 2m south west. Find the displacement of the person.
asked by Jayanta on July 7, 2016 
Calculus
Right now my class is working on exponential growth and decay. I know that i have to find the integral of both sides and solve for Y but I don't know how to do so exactly. Here's the problem: if dy/dx=3Y(10Y) integrate to solve for Y
asked by Crystal on February 11, 2008 
mechanics
an object weighing 578N and suspended by two wires. each wire makes an angle of 35degree with the horizontal. find the tension on each wire.
asked by kia4 on June 28, 2017 
physics
A 3.1 kg block initially at rest is pulled to the right along a horizontal frictionless surface by a constant horizontal force of 16.6 N. Find the speed after it has moved 3.8m.
asked by jay on November 18, 2017 
physics
Suppose the traffic light is hung so that the tensions T1 and T2 are both equal to 80 N. Find the new angles they make with respect to the xaxis. (By symmetry, these angles will be the same.)
asked by Keyana on November 12, 2012 
physics
An 6.82 kg block drops straight down from a height of 1.31 m, striking a platform spring having a force constant of 1.16 10^3 N/m. Find the maximum compression of the spring.
asked by cbrown on March 21, 2009 
Math
Thank you Ms. Sue. Sorry I didn't tell you we're just learning that pi=3 for now. It made everything complicated for you to check if my answers were correct. :P But what is this formula usually used for?Diameter=Circumference/π? Is it used to find the
asked by Jerald on March 6, 2013 
mathematics for management
1.FIND the bank discount and proceeds on the following loans i) RM4000 FOR 3 MONTHS at 10 1/2 percent ii) RM4215 FROM 10 june to 5 august of the same year at 10 percent
asked by bella twins on April 25, 2014 
college algebra 2
Use the equation W = 0.0014x2  0.076x + 50 to find W for each xvalue in the table. Use this equation to estimate the number of worms on 60 and on day 180. Which answer is the most accurate?
asked by Judith on December 11, 2011 
Math urgent
Find a degree 6 polynomial with  8 as a root, no other roots, and in which the coefficient of x^6 is 16. Assume that all (nonconstant) factors of the polynomial correspond to real zeroes.
asked by Eileen on November 3, 2010 
Physics
A satellite is placed 39875 m above the Moon's SURFACE. (M=7.35e22 kg, R=1.74e6 m) Find the Period of the satellite in seconds. (assume a circular orbit)
asked by stewart on April 24, 2014 
Calculus
Find the extreme values of the function and determine the intervals where the function is increasing/decreasing expressed in interval notation. x(x2)^2 So far I've found y'=3x^28x+4. Thanks
asked by Mike on November 10, 2017 
Physics.
How do I find how long it takes to drain one half of the initial volume of the conical tank . and what fraction of the full drain time is it?
asked by Jay on September 24, 2015 
math
Suppose you deposit $600 in a savings account. The interest rate is 4% per year. Find the principal balance in the account after six years
asked by Anonymous on October 31, 2016 
statistics
Scores on the ACT test are normally distributed with a mean of 21.1 and a standard deviation of 4.8. If one ACT score is randomly selected, find the probability that it is greater than 20.
asked by Abby on December 14, 2010 
college algebra 2
Use the equation W = 0.0014x2  0.076x + 50 to find W for each xvalue in the table. Use this equation to estimate the number of worms on 60 and on day 180. Which answer is the most accurate?
asked by Judith on December 11, 2011 
maths
(a) Let u=7^x. Using the rules for powers show that i) 7^x1 = u/7 and ii) 7^2x1 = u^2/7 (b) By making the substitution u=7^x and using part (a), derive a hidden quadratic equation 7^2x1 +4×7^x1  1/14 = 0 and hence find all solutions to the above
asked by Michael on October 25, 2016 
Algebra
The sum of the squares of the largest and smallest of three consecutive odd integers is 353 less than 3 times the square of the middle one. Find the integers.
asked by Karen on January 29, 2013 
maths
a ladder 12 m long rests aganist a wall if it reaches the wall at a height of root 63m then find the angle of elevation
asked by meena on January 8, 2016 
math
please help me !!! ted has 8 autographed baseballs. all together the baseballs are worth $200.00 explain why you do not have enough information to make a bar diagram to find the value of each baseball.
asked by santos on March 24, 2011 
Math
Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x3  16x on the interval [1, 1]. If so, find the xcoordinates of the point(s) guaranteed to exist by the theorem.
asked by Ryann on March 23, 2016 
math
Rose's garden is in the shape of a trapezoid. The ht is 16m one base is 20m and the area is 224m2 find the length of the other base 290m2
asked by tony on March 22, 2007 
statistics
Use of normal distribution to approximate the desired probability. Find the probability of getting at least 30 fives in 200 tosses of a fair 6 sided die.
asked by Lori on October 8, 2010 
math (promissory notes)
1.FIND the bank discount and proceeds on the following loans i) RM4000 FOR 3 MONTHS at 10 1/2 percent ii) RM4215 FROM 10 june to 5 august of the same year at 10 percent
asked by fizz on April 24, 2014 
math
Suppose you deposit $600 in a savings account. The interest rate is 4% per year. Find the principal balance in the account after six years
asked by isaiah on October 31, 2016 
Math
One card is selected at random from an ordinary set of 52 cards. Find the probability of each of the following events: b. A spade and a 5 are drawn. d. A jack is not drawn.
asked by connie on November 30, 2009 
AE
Identify the roles district, state, and federal government agencies have in your local schools. for the state of wisconsin can you help me find a website
asked by scooby91320002 on March 19, 2009 
Physics
a projectile is fired with an initial speed of 53 m/s. Find the angle of projection such that the maximum height of the projectile is equal to its horizontal range
asked by Amanda and Travis on September 23, 2012 
chem
a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed.
asked by susan on July 20, 2011 
chemistry
If 1.00 mol of iodine and 0.50 mol of chlorine are initially placed into a 2.00 L reaction vessel at 25 degrees celsius, find the concentrations of all entities at equilibrium
asked by Kelsy on April 7, 2008 
Maths
The points A(1,5) and B(9,3) are part of a triangle ΔABC. The triangle has a right angle at A and and sides satisfy AB=2AC. Find a point C such that C lies above the line AB.
asked by Jared on October 31, 2016 
friction
A 15.0kg bix is released on a 32degree inclined and accelerates down the inclined at 0.30m/s^2. find the friction force impeding its motion.
asked by Anonymous on July 18, 2010 
8th grade math
John has already saved $40 and wants to buy an IPod for $129 in 4 months. To find how much he should save each week he wrote the following equation: 40+16n=129.
asked by Amanda on November 29, 2009 
maths
find the encentricity,the foci and vertex and the equation of directrix and asymptote to the equation give the ellipse below 25x^2+4y^250x16y59=0
asked by daniel on March 16, 2016 
Physics
an electric appliance takes 5A when operated on a 220V supply. Find the cost of operating the appliance for days at 2 kobo per kwh?
asked by Sade on June 25, 2019 
PreCalc
Find the line of the equation that hits y=4x^220 when x= 5 that is perpendicular to 5x6=3y My solution does not graphical show perpendicular lines, but algebraically it works lol Help!
asked by Lynnette on September 23, 2010 
chem
a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed.
asked by ella on July 20, 2011 
Math
Find how much must be deposited now (present value) at % simple interest so that in 6 years an account will contain $8958 (future value). present value = $ WHAT FORMULA DO I NEED TO USE TO HELP ME SOLVE THE PROBLEM?
asked by AMANDA on September 10, 2010 
maths
The points A(1,5) and B(9,3) are part of a triangle ΔABC. The triangle has a right angle at A and and sides satisfy AB=2AC. Find a point C such that C lies above the line AB.
asked by Lauren on October 31, 2016 
Spanish
In which city will you find an openair market called El Rastro? Buenos Aires México City Madrid*** Bogotá
asked by Kaai97 on January 6, 2016 
physics
A stone is projected vertically upwards with a velocity 10m/s .Find the maximum height reached by the body (g=10m/sec)
asked by yasaswani on August 10, 2014 
math
Find the pressure exerted by the atmosphere on a car window which is 30 cm tall and 40 cm wide if atmospheric pressure is 101,000 Pa. (Remember that a Pa = N/m2)
asked by Anonymous on April 26, 2017 
Math (related rates) help?
A 13ft ladder slides down a wall at 2ft/sec when it is 12 ft above the ground. Find the rate at which the angle it makes with the ground changes at this moment?
asked by Ray on December 8, 2016 
Physics
The efficiency of a machine is 60℅,find In joules the work done by a student using the machine to rise a load of 150kg through a vertical distance or 2.5 m (g=10m/s2)
asked by Lawrence on January 3, 2019 
physics
A body travels along a circular path of radius 70 m.After travelling half a revolution in 20 s find the ; 1.average velocity 2.average speed
asked by Saurabh on June 21, 2011 
child development
what level and stage he or she is at developmentally, and list some characteristics demonstrating the nature of the stage. i picked adolecent can you help me find some sites plz
asked by scooby on January 15, 2010 
Math
Peter has 1200 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed area?
asked by Jane on December 4, 2012 
Math
Scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 689599.7 rule to find the percentage of people who score between 363 and 541
asked by Katelyn on April 30, 2017 
Calculus
Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. HINT [See Example 3.] Enclosed by y = x and y = x^4
asked by Tiffany on December 15, 2013 
Linear Algebra
For the matrix A below, find a value of k so that A has two basic eigenvectors associated with the eigenvalue λ = 3. A = [−3 −18 54 204 0 3 −18 −54 0 0 −3 k 0 0 0 3] k = ? I'm specifically having troubles reducing this and knowing what it'll
asked by Alistair on December 4, 2016 
Physics
A baseball is thrown such that it is in the air for 4 seconds and lands 100 m away. Find the initial vertical and horizontal components of the baseball's velocity.
asked by Josh on November 14, 2012 
English
The base word way can combine with a great many words to form compounds, as in expressway. Try to find a compound word containing way for at least 13 letters of the alphabet!
asked by Nerd1234 on January 10, 2016 
Algebra
A baseball is thrown upward and its height after t seconds can be described by formula h(t)=−16t^2+50t+5. Find the maximum height the ball will reach.
asked by Anonymous on January 6, 2019 
Statistics
The retail price of 12pack soda can be characterized as having a normal distribution with a mean of 3 dollars and a standard deviation of .25. Below what price do you find 30 % of all 12 packs?
asked by Christine on September 22, 2012 
Maths
Find the first four terms in the binomial expansion of (1+x)^(1/5) and state the range of values of x for which this expansion is valid.Hence approximate (31)^(1/5) correct to four decimal places.
asked by Lynn on July 8, 2015 
algebra
Samina spent 1/8 of her money to buy books, 1/5 in purchasing clothes and 1/10 on charity. If she still had Rs 15, more than half of her money, find the amount she had originally.
asked by Abdul Wahab on January 7, 2019 
Math
He needs to make a large circular wooden clock that measures about 6 feet in circumference. Write an equation he can use to find r the radius of the clock
asked by Miles on December 14, 2010 
Physics
The observed frequency of a train whistle is 513Hz as it approaches a stationary observer and is 432Hz as it recedes. Find the speed of the train
asked by maryam on March 16, 2016 
a
A compter software retsilor used a matkup ratr of 30%. Find the selling price of a computer game that costs the retsilor 15 dollard
asked by melissa on March 5, 2014 
maths sir steve help me reiny
A curve has parametric equations x = at² , y = 2at. Find the area bounded by the curve, the x axis, and the ordinates at t = 1 and t = 2 step plz
asked by youri on April 20, 2017 
Math
Substituting the four numbers 1, 9, 8 and 3, for the four letters in the addition problems (different number for different letters) BAD + MAD + DAM. Find the largest sum!
asked by rom on October 23, 2016 
math 111 urgent please help
Find a degree 6 polynomial with  8 as a root, no other roots, and in which the coefficient of x^6 is 16. Assume that all (nonconstant) factors of the polynomial correspond to real zeroes.
asked by Eileen on November 4, 2010 
Chemistry
If from 10 moles NH3 and 5 moles of H2S04,all the Hatoms are removed in order to form H2 gas,then find the number of H2 molecules formed.
asked by Prateek on July 19, 2017 
algebra
the volume of a cylinder is represented by the polynomial 2pier^3 + 12piex^2 + 18piex. find the expression for the radius and the expression for the height in terms of x
asked by Kay on February 11, 2011
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