
AP CHEMURGENT PLEASE
could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)> 3 C (g) a.
asked by Jonathan on February 20, 2008 
Chemistry
could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)> 3 C (g) a.
asked by Kevin on February 25, 2008 
CHEMISTRY
could you please check my work? thanks. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g)> 3 C (g) a.
asked by Jonathan on February 21, 2008 
Algebra 1
1) Find the possible values of a, if the distance between the points is 5, and the coordinates are (1, 1) and (4, a). I don't know how to solve this one. 2) in a right triangle the length of the hypotenuse is 14 and the length b of one of the legs is 8.
asked by Eri on May 31, 2013 
physics
hi can somebody help me with this?? a solenoid of length L and radius R carries a current I in its N turns. what is the total energy stored in the magnetic field within the solenoid? Compute the inductance L using the solenoid formula. You should be able
asked by spencer on August 5, 2007 
Punctuation within sentenceshyphen
the book had some nice features, such as: a hardbound cover, a ribbon for a bookmark, and the author's signature. 2. German grammar is simple: in that language, there are no exceptions to the rules. 3. Her daughter went on a diet that consisted of all
asked by ted on October 21, 2007 
Geometry: Right Triangles
In my math homework, it is asking me to find the height of a triangle. Does anyone know how to find the height of a triangle? If you could, could someone give me an example problem? Thanks a lot!
asked by Anonymous on December 3, 2017 
Trigonometry
I do not know how to find a single function of x or ø by using an identity. How do you find a single function using identities for a problem such as: cos(3pi/4  x)
asked by Roze on November 25, 2016 
Math
abcd is a parallelogram with sides ab=12 cm,bc=10 cm and diagonal ac=16 cm .find the area of the parallelogram also find the distance between its shortest sides
asked by Shubham on February 23, 2013 
geometry
abcd is a parallelogram with sides ab=12 cm,bc=10 cm and diagonal ac=16 cm .find the area of the parallelogram also find the distance between its shortest sides
asked by Anonymous on February 22, 2013 
math
Let f be defined as follows. y = f(x) = x^2  4 x (a) Find the average rate of change of y with respect to x in the following intervals. from x = 5 to x = 6 from x = 5 to x = 5.5 from x = 5 to x = 5.1 (b) Find the (instantaneous) rate of change of y at x =
asked by Anonymous on February 4, 2011 
Calculus
Find the area between y=cosx and y=sinx from 0 to 2pi. To find the zeros, I combined the equations cosxsinx=0 What's next?
asked by sh on May 21, 2010 
Math
Perimeter is 60 ft. Find length and width if length is 8 ft longer than the width. Would it be 60=(8+l)+w I don't know where to put the 8 But there's two variables how would I find both l and w
asked by Amy~ on September 17, 2010 
World History
I need to find a weird or odd current event. Help me find a weird or odd news. Please post the link.
asked by Anonymous on September 6, 2012 
Geometry
In an isosceles triangle, the perimeter is 75 cm and one of the sides is 25 cm. Find all its sides. Can you find all angles of the triangle? Explain your answer.
asked by Vernice on April 5, 2019 
calculus
Let f be defined as follows. F(x)=y=x^2 7 (a) Find the average rate of change of y with respect to x in the following intervals. from x = 4 to x = 5 from x = 4 to x = 4.5 from x = 4 to x = 4.1 (b) Find the (instantaneous) rate of change of y at x = 4.
asked by Tess on September 7, 2011 
Physics
2)How to find the magnitude of change in velocity given the angle substended @ and velocity v and find the time taken to travel tt angle?
asked by Lew on September 17, 2010 
english
I lay my book on the table, but now i cannot find it. or I laid my book on the table, but now i cannot find it. Which one is using regular and irregular verbs
asked by Anonymous on October 15, 2009 
CALC SHOULD BE EASYISH
Let f be defined as follows. F(x)=y=x^2 7 (a) Find the average rate of change of y with respect to x in the following intervals. from x = 4 to x = 5 from x = 4 to x = 4.5 from x = 4 to x = 4.1 (b) Find the (instantaneous) rate of change of y at x = 4
asked by Tess on September 7, 2011 
Calculus
Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = (t)i + (2/3)t^(3/2)k, 0 less than or equal to t less than or equal to 8
asked by Beau on September 25, 2012 
Trig
How would you find tan80 and tan55 as needed in this problem? Use identities to find each exact value. (tan80+tan55)/(1tan80tan55)
asked by Chloe on February 2, 2010 
Math
What's the stepbystep proccess to find the average? It's been years since I've been taught how to find the average of a set of numbers.. Thanks whoever can help!
asked by Pinky on November 9, 2009 
math
find two fractions with a sum that is greater than 3/4 and less than 15/16. Write your fractions in simplest form and find the actual sum.
asked by nainai on January 14, 2013 
Geometry
In an isosceles triangle, the perimeter is 75 cm and one of the sides is 25 cm. Find all its sides. Can you find all the angles of the triangle? Explain your answer.
asked by Vernice on April 5, 2019 
math
I have an equation of P=(1703x)(x25) How do I determine the yintercept I know I can determine the x intercepts by setting x = to zero, so those are easy to find, but I'm not sure how to find the yintercept. Thank you.
asked by carly on December 3, 2017 
Physics (Engineering Science)
Find the total resistance (in series) of 1.0 MΩ, 560 kΩ, 5.6 MΩ, 680 kΩ and 10 MΩ So I understand to find total resistance is RT= R1+R2+R3.... but it's the MΩ that's confusing me on what I should do
asked by Mike on September 29, 2018 
Math
Find the shaded area in the following figure if the rectangle inscribed in the circle has dimensions 3 ft x 4 ft. I know I find the area of the rectangle A=l*w, but what do I do next?
asked by Punkie on December 16, 2009 
math
find X if the numbers X+3, 5x3, and 7x+3 are three consecutive terms of a G.P of positive terms. with this value X and given the X+3, 5x 3 and 7x +3 are the third, fourth and fifth terms of the G.P.. find the sum of the first 8 terms of the progression.
asked by mili on September 23, 2015 
maths
find the base of an isocelus triangle base 12cm and its peremeter is32cm.find the area of the triangle
asked by jennie on May 21, 2012 
Clueless in calculus
The function f is defined by f(x)= (25x^2)^(1/2) for 5 less than or = x less than or = 5 A) find f'(x) B) write an equation for the tangent to the graph of f at x=3 C) let g be the function defined by g(x)= (f(x) for 5
asked by Aparna on March 19, 2013 
maths
the length of a rectangle is twice its width, the area is 72sq inches,find its dimensions(find length and width)
asked by 4611star on August 2, 2012 
math
In an isosceles triangle, the perimeter is 75 cm and one of the sides is 25 cm. Find all its sides. Can you find all angles of the triangle? Explain your answer.
asked by maria on January 28, 2017 
Calc
The function f is defined by f(x)= (25x^2)^(1/2) for 5 less than or = x less than or = 5 A) find f'(x) B) write an equation for the tangent to the graph of f at x=3 C) let g be the function defined by g(x)= (f(x) for 5
asked by Aparna on March 19, 2013 
albebra
I do not understand how to find x on a graph when there is no equation. I have the possible answers: a) x= 3, b) x=1, c) x=5, d) x=1 It asks me to find the value of x when y is 5; however, the graph I have has a line (0,2) on the y axis and on the x axis
asked by bart on June 12, 2010 
Math
The vector a1=(1,1,0) and a2=(1,1,1) span plane in R^3. Find the projection matrix P onto the plane, and find nonzero vector b that is projected to zero.
asked by Melvin on January 2, 2011 
trig
1) given cotθ = 1/2√7, find sinθ and cosθ in quadrant I 2) given tanθ = √5, find secθ and cotθ in quadrant III
asked by coco on October 10, 2015 
math
Find the # of possible choices for a 2 digit password that is greater than 19. Then find the # of possible choices for a 4 digit PIN # if the digits can not be repeated. HELP!
asked by Kory on April 18, 2011 
Math
This is regarding direct variation. y varies directly as the square of R. If y = 128 when R = 8, find y when R = 5. Another one I cannot figure out: If x varies directly as y, and x = 32 when y = 8, find x when y = 10 Help!
asked by Mike on April 18, 2010 
Mathematics
Find four consecutive even integers such that four times the greatest is 36 more than more than the sum of the other three.Four times a number increased by 5 is 37.Find the number.
asked by Athena on November 26, 2015 
Algebra 2
Find the coordinates of any vertices formed. 3x + 4y ≥ 12, 5x + 6y ≤ 30, and 1 ≤ x ≤ 3. I tried graphing this, which formed a parallelogram, but it was hard to find eyeball vertices.
asked by Peter on October 2, 2011 
Calculus quick question pls
Why is there no vertical asymptote on F(x) = x/(x^2+1) What i learned is that to find vertical asymptote you have to set the denominator To 0 and solve for x ? In that case I find that x=1,1
asked by Amelia on April 24, 2016 
Inverse variation
A variable 'm' varies directly as 'a' and inversely as 'b'. If m=6 when a=7 and b=4, what is 'm' when a=9 and b=12? M= constant*a/b Find the constant from the first set of data, then, using that, find m in the second set.
asked by Jen on February 7, 2007 
math
my math homework tells me to find the area of a circle using it's circumference. the circumference given was. can someone explain to me how to find the area?
asked by elijah on April 13, 2015 
Criminal Justice
Can someone please point me to a website that is free that has court cases on it? My professor wants us to find the original trial courts for these people: 1. Orenthal James Simpson 2. Theodore Kaczynski 3. Louise Woodward 4. Timothy James McVeigh 5. Lyle
asked by Completely lost on November 25, 2009 
Chemistry
How do you find the empirical formula; A 4.083 sample of a chemical containing only lead, carbon, and hydrogen reacts in combustion reaction. 4.444 g of CO2 and 2.274 g of H2O were formed. Insert subscripts in CHPb. I understand how to find moles, then
asked by Bunny Jones on September 19, 2017 
Math
I need help with these problems for a test. 1. Find the inverse of the onetoone function. f(x)=5x+1/4. 2. The height of the water, H, in feet, at a boat dock t hours after 7 am is given by E=7+4.4cos pi/35 t, where t is time measured in seconds. Find the
asked by David on June 13, 2010 
Physics
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85x10^5 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28X10^5 Pa and the pipe
asked by Chelsea on November 20, 2012 
Prenatal Development
I'm having a hard time choosing a teratogen (anything that causes harm to a fetus), especially since all the easy ones to find ones are all takenRadiation, Rubella, Syphilis, Hydrocodone, Heroine, Methamphetamine, Methadone, Caffeine, Nicotine,
asked by Jessica on March 23, 2013 
math answer check
Three coins are tossed, and the number of heads observed is recorded. (Give your answers as fractions.) (a) Find the probability for 0 heads. Incorrect: Your answer is incorrect. . Your answer cannot be understood or graded. More Information Redone 0/3 was
asked by Nora 4 on June 1, 2013 
Math
Prealgebra Find the sum of the interior angles of a nonagon. (1 point) 140° 1,620° 1,260° 1,450° 4. Find the measure of each interior angle of a polygon with 12 sides. (1 point) 1,800° 150° 180° 145° 5. Four of the angles of a pentagon measure
asked by coolio on November 14, 2018 
accounting
Problem: For the following four cases, use the accounting equation to compute the missing quantity. Note: I was given four cases but apparently I am missing something. For example the first case states: $20,000 assets, $8,000 liabilities, and $3,500 in
asked by Tamra on April 28, 2008 
algebra
A company that manufactures bikes has a fixed cost of $8,000. It cost $800 to produce each bike. The total cost for the company is a sum of fixed cost and variable costs. Write the total cost, C, as a function of the number of bikes produced x then find
asked by pam on July 12, 2015 
algebra
Q: when graphing the equation y = 4/3x + 2, the y intercept is? A: (0,2) Q: Determine whether  3.5 is a solution of the inequality. x greater than or equal to 6 A: No Q:identify the y intercept of y = x + 8 A: (0,8) Q:solve using multiplication principle
asked by Carmen on October 4, 2008 
English Pls Writeacher Help Me by checking my work
write a news story in invertedpyramid style. Begin your story with a summary news lead of no more than 20 words and then write a full story using inverted pyramid style. Using the scenario below. A home at 2481 Santana Avenue was burglarized between the
asked by Mary on May 30, 2013 
calc
Find dy/dx given x^2+ y^2= 2xy. Im not sure how to find dy/dx
asked by ashley  HELP PLEASEE!!! on December 28, 2011 
mental arithmetic
if p=3 and q=8 find the value of 3p+2q how do I find out the value of 3p? can you please explain?
asked by kendall on October 30, 2017 
trig
find the indicated vector. let u = (9,1), v=(5,9). Find 3u+v
asked by tony on June 28, 2013 
Math
Let the integral ∫ from 4 to 13 f(x) dx = 5, ∫ from 4 to 7 f(x) dx = 1, ∫ from 10 to 13 f(x) dx = 3. a)Find ∫ from 7 to 10 f(x)dx= ? and b)Find ∫ from 10 to 7 [5 f(x)−1]dx= ?
asked by Josh on October 19, 2018 
Math
Find the composition. If f(x) = x^2 + 12 and g(x) = x^2  5, find (g*f)(x)
asked by Urgent!! on April 17, 2010 
precalc
F(x)= x^2+x12/ x^24 find the x and y intercepts and find x when f(x)=1
asked by Josie on November 16, 2012 
Math
8arcsin(x^(2)), find f '(x). Find f '(0.3).
asked by bobby on March 28, 2012 
Math
4/13y – 7=6 8a – 3+1.2a = 9 5f + 1/8 = 3 (Find the value of f) p + 3/10 = 4 (Find the value of p)
asked by confused by adverbs and adjectives on October 5, 2010 
GEOMETRY
If RS=ST=19, s
asked by VANESSA on October 2, 2012 
calculus
1. If f(x) = ln(1  2x), then find f '(x) 2. If f(x) = 7x6cos1x, find f '(x)
asked by mock on January 14, 2015 
Multiplication
How can you use 4×7 to find the 8×7 find the product.
asked by Alyson on November 25, 2016 
Homework
Q=wc(T1T2) find c Can you help me find out how to do this problem PLEASE !! TY
asked by Michelle on September 3, 2014 
math
1,What is the relationship between y and x 2,find y when x is =27 3,find x when y is =81
asked by No on March 2, 2010 
math
Y=2,x=30 and Y=6,x=50 Find the relationship between x and y. Find x when y=3
asked by Chimele on January 24, 2016 
math
If f (x) = 8arcsin(x^(2)), find f '(x). Find f'(0.3).
asked by bobby on March 28, 2012 
calculus
Find f^1(13), f(x)= 2x^5 + 3x^3 + 8x and find D(f^1(x)) at x=13. Is this correct... I got 1/27 ??
asked by Sierra on March 22, 2011 
Calculus
Find each function, find f(a+h) and f(a+h)f(a) a) f(x)=5x2
asked by Jake on February 13, 2012 
Calculus AP need help!
1. f(x)=√5x+6, find f'(x) 2. f(x)=√4x^2+3x+4, find f'(x). i got stuck. f(x)=√5x+6=(5x+6)^1/2 f'(x)= 1/2(5x+6)^3/2*(5).
asked by cynthia on February 28, 2012 
Calculus
a) Find d/dm (x^4m^5 + y^3m +z^6) b) Find the first and second derivatives of: v = 3t^2 + 8t + 11 v' = v'' =
asked by Arin on February 5, 2015 
geometry
Given that B is between A and C, find the indicated length. AB=5.3 and AC=6.7. Find BC
asked by taz manian on September 22, 2008 
Geometry
How would you do this? Rs=8y St=4y+8 RT=115y9 a.Find the value of y b. Find rs, st, rt
asked by Vanessa on August 14, 2013 
Math
If find RX = 2y + 2x, TX = 3y  1, and SU = 28, FIND THE VALUES OF X AND Y
asked by Mike on January 17, 2011 
Math
To find 62  24, you could first find 64  24 = 40. Then what should you do? Explain>
asked by Eudy on October 6, 2011 
calculus
Consider the following function. f(x) = (x+2)/(x3) (a) Find f '(x) (b) Find f '(4)
asked by Sal on October 27, 2010 
geometry
Given that B is between A and C, find the indicated length. AB=21 and BC=4.3. Find AC
asked by taz manian on September 22, 2008 
math
how do i find 3/4 of 8 another question says find 3/8 of 1/4
asked by kayla on January 25, 2009 
statistics
If P(A)=11/13, find P(Ā) Find the indicated probability
asked by Anonymous on July 11, 2016 
Math
Find the product 8 1/3 x 3/5 in simplest form Find the product 5 1/2 x 3 1/3 in simplest form Use distributive property to find the product 4 2/5 x 10
asked by Heather on January 28, 2015 
Calculus
Let f(x)=−2 x^3 − 3 x^2 − 2 x − 10. Find the interval where f is concave up. I Answer: < x < Find the interval where f is concave down. Answer: < x < Find the inflection point of f. Answer: x=
asked by Erika on October 29, 2010 
Math help ms sue.
1. What is 57% of 11? (1 point) 11 = 0.57 • n; 19.3 n = 57 • 11; 627 n = 0.57 • 11; 6.27 11 = 57 • n; 0.19 2. 224 is 25% of what number? (1 point) 224 • 0.25 = w; 560 224 = 0.25 • w; 896 224 • 0.25 = w; 56 224 = 0.25 • w; 90 3. Explain how
asked by josh on January 12, 2014 
Statistics help
Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3989. (b) Find the standard score (z) such that the area above the mean and
asked by DeeDee6 on June 14, 2013 
Math
Use a metric ruler and a protractor to find 2 a (vector)  2 b (vector). Then find the magnitude and amplitude of the resultant. When I measured I got 2 for b and 4 for a. The answers I have to choose from are 8cm,41degrees, 9cm,38degrees,6cm,36degrees,
asked by Joanie on February 2, 2009 
probability and statistics.
I am preparing for a chapter test in my prob/stat class and since my teacher no longer cares about our class and the textbook is as confusing as a foriegn languaga, i am in need of help. i am trying to review an old quiz ao here is one of the questions.
asked by penny lane on May 17, 2011 
physics
1.A train passes an electric post in 8sec and a bridge of length 1km in 108sec .Find the speed of the engine . 2.A runner travels at the rate o f25km/hr for 4min ;then at 50km/hr for 8minn and finally at 20km/hr for 2min .Find a) the total distance covered
asked by srikar on May 19, 2012 
PHYSICS
a uniform stick weighing 50Newton is suspended from the ceiling while the other end of it rests on the floor and making an angle 60degree along with horizontal. the string makes a 15 degree angle with the vertical. find the minimum value of the coefficient
asked by John on May 1, 2012 
calculus
let R be the region bounded by the graphs of y = sin(pie times x) and y = x^3  4. a) find the area of R b) the horizontal line y = 2 splits the region R into parts. write but do not evaluate an integral expression for the area of the part of R that is
asked by sarah on May 20, 2008 
math
let R be the region bounded by the graphs of y = sin(pie times x) and y = x^3  4. a) find the area of R b) the horizontal line y = 2 splits the region R into parts. write but do not evaluate an integral expression for the area of the part of R that is
asked by ana on May 20, 2008 
math
1.) find the volume of this cylinder. diameter 8cm and height=7cm. round to the nearest hundredth. 2.) find the volume of the cone. diameter=4m and height= 6m. round to the nearest hundredth. 3.) find the volume of the sphere. Radius=5m. round the the
asked by nunya on May 2, 2019 
Math help
Can someone give me a heads up on how to even start this problem.. Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3989.
asked by Tom 6 on June 14, 2013 
Need help finding website
Im working on my planning. And Im talking about a course I would like to take in the future. Anything related with geology. I am trying to find the costs on TRU/UBC. Cant find it on either one of these sites. Please provide me the link. I would like costs
asked by Anonymous on April 28, 2011 
math
3 Normally distributed Test scores for a police exam is a normal distribution TEST,150,20. 5) Find the probability that a randomly chosen candidate’s score is greater than 165. 6) Find the cutoff score for the top 10% of testtakers.
asked by marie on October 7, 2011 
math
1)In triangle ABC, C=60 degrees, a=12, and b=5. Find c. A)109.0 B)10.4 C)11.8 D)15.1 I chose B 2)Which triangle should be solved by beginning with the Law of Cosines? A)A=115 degrees, a=19, b=13 B)A=62 degrees, B=15 degrees, b=10 C)B=48 degrees, a=22, b=5
asked by Jon on February 11, 2008 
Calculus
The pricedemand and cost functions for the production of microwaves are given as p=235−x40 and C(x)=14000+70x, where x is the number of microwaves that can be sold at a price of p dollars per unit and C(x) is the total cost (in dollars) of producing x
asked by Anonymous on March 30, 2015 
Probability
Sophia is vacationing in Monte Carlo. On any given night, she takes X dollars to the casino and returns with Y dollars. The random variable X has the PDF shown in the figure. Conditional on X=x , the continuous random variable Y is uniformly distributed
asked by Kina on June 22, 2019 
English
1. Find someone who has moved into a new house. (In this sentence, does the person live in the new house or no?) 2. Find someone who has had more than two dogs. (In this sentence, does the person have two dogs now? Or does he have ever had two dogs before,
asked by rfvv on November 9, 2009 
Physics
A circular loop of wire with radius 0.0450 m and resistance 0.154 R is in a region of spatially uniform magnetic. The magnetic field is directed out of the plane. The magnetic field has an initial value of 7.89 T and is decreasing at a rate of 0.630 T/s.
asked by Kyle on February 29, 2012
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