
Math
a bag contains 4 white, 3 blues, and 5 red marbles. find the probability of choosing a red marble, if the marbles are replaced. A) 1/12*** B) 5/36 c) 5/6 D) 5/12
asked by 7th Grade Questions on February 9, 2016 
physics
The repulsive electric force between the point charges 6.36 * 10^6 C and q has a magnitude of 1.32 N when the separation between the charges is 1.07 m. Find the sign and the magnitude of the charge q.
asked by Alfredo on February 5, 2015 
physics
Find the tensions in the given diagram. If the object supported weight is 800N T4 70o T5 70o T3 C B T1 T2 50o 30o A 800N
asked by chansa b on May 18, 2016 
Physics
A big clock has a minute hand 3 ft long and a second hand 4 ft long. let x be the distance between their tips. find max value of (dx)/(dt) *d for derivative
asked by jamie on October 8, 2007 
Calculus
A parabolic arch bridge has a 60ft base and a height of 24ft. Find the height of the arch at a distance of 5, 10, and 20 ft from the center
asked by Net on December 8, 2015 
algebra
Find the least common multiple of the monomials. 5a squared, and 16a cubed. Also 17b squared and 3b cubed. Could you show me how to do these. Thank you, Sandy
asked by Logan on October 10, 2012 
social studies
Does anyone know a place where I can find out what the required # years of education was in 1985 in USA? And the average wage rates in USA in 1985? Thanks so much.
asked by e.l on May 29, 2009 
Physics
Two adjacent corners of a square have charges q1 = +1.5 x 109 C and q2 = +4.0 x 109 C. The length of a side of the square L = 0.25 m. Find the EPE of a charge q3= 6.0 x 109 C placed at the 2 remaining corners.
asked by K on July 10, 2008 
Mathematics
The length of a rectangular backyard is 7 feet less than four times its width. If the area of this garden is 15 ft2, find the length of the garden?
asked by Amy on May 19, 2013 
TRIGONOMETRY
3. The rectangular coordinates of a point are given. Find the polar coordinates of each point. b. (0,3) I figured out a, but I canNOT figure out b. Can someone please explain? :)I need to know how to do this for my final next week.
asked by Kate on May 16, 2013 
Calculus
For Questions 1–2, use the differential equation given by dy/dx = xy/3, y > 0. 1. Complete the table of values x 1 1 1 0 0 0 1 1 1 y 1 2 3 1 2 3 1 2 3 dy/dx 2. Find the particular solution y = f(x) to the given differential equation with the initial
asked by William on May 7, 2018 
Chemistry
A 10 g mass of krypton occupies 15.0L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790kPa. Thanks
asked by Amy on May 6, 2012 
maths
Using the complementary angle ratio results,find the value of x for the following. (a) cos(x+35)degree=sin x degree (b) sec x degree=cosec(x+20)degree
asked by Shane on April 5, 2013 
statistics
The table below shows the number of girls who ran certain distance. Distance(Km)  5  10 15  20  25  No. of girls  2  1  3  4  X 
asked by Angel on June 5, 2011 
Geometry
The lengths of the sides of a triangle are 3x, 5x – 12, and x + 20. Find the value of x so that the triangle is isosceles. Can somebody show me a stepbystep process of how to get the answer(s) please? I need it:) I also saw that x could = 8, 10, and 6.
asked by SkatingDJ on December 8, 2015 
algrbra
The length of a rectangular football field is 14 meters more than twice its width. If the perimeter is 346 meters, find the field's dimensions.
asked by Anonymous on November 8, 2016 
math
A parallelogram is a convex quadrilateral with four vertices and two sets of opposite parallel sides. Given 3 of the vertices of a parallelogram at A (0,0) B(2,5) and C(2,0), find all possible coordinates for D.
asked by Kay on November 21, 2010 
Math
The force on an object is F =−21j . For the vector v =4i −j , find: a) The component of F parallel to v : (b) The component of F perpendicular to v : The work, W, done by force F through displacement v :
asked by Tim on May 6, 2018 
Social Studies
Sometime around the 1880s European countries, for a variety of reasons, began to take control or colonize some area in Africa and Asia at an alarming rate. The expansion of European power in this period took many forms, but no matter the form it had greed
asked by Jerald on April 10, 2013 
Algebra
write the equation of the line in slopeintercept form given the slope and the coordinates of the yintercept m = 3/7;(0, 8/3) find an equation of the line described below. write the equation in slopeintercept form (solved for y) when possible. through
asked by Paris on December 7, 2017 
ART HAVING HARD TIME
1. A curator decides to display an eighteenthcentury painting in a windowless room with controlled temperature and humidity. Pick the answer that best describes the reasons for her choice: (1 point) 1)The curator wants to make sure that the temperature
asked by Taylor on January 22, 2015 
ss
Multiple Choice 1. What is the main advantage of using money instead of bartering? (1 point) Many more people today use money than bartering to get goods and services. Not all countries use the same types of money in their economies. Money comes in
asked by jacob on August 24, 2015 
AED / ASAP PLEASE 2
Review the experienced teacher’s lesson plan in Figure 3.3 on p. 78 of the text. Write a 200 to 300word response by adding more detail to the experienced teacher’s lesson plan: o Provide ideas for motivating students. o Create question prompts. o
asked by dawn on October 24, 2008 
Math
1. A door has a lock with a 5digit keypad. To unlock the door, a person must enter a passcode consisting of three different digits, with each digit entered in the correct order. What is the probability that a randomly chosen passcode consisting of three
asked by Linda on March 22, 2015 
Physics
Firemen are shooting a stream of water at a burning building. A highpressure hose shoots out the water with a speed of 21.0 m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of
asked by Josh on September 17, 2006 
English
River Traffic The great rivers roll on their way to the sea. And young men and boys ride on flatbottomed boats That carry great cargoes of lumber and wheat To farms and the markets in blistering heat In America’s South where the boats sell their loads.
asked by JJJAYWOW on April 16, 2013 
algebra
i have four graphs and i need to find which one represents a function two of them didn't because they didn't pass the vertical line test so i got left with two who did pass it but now i don't know which one to pick since there is only one answer that's
asked by Anonymous on March 29, 2013 
Statistics
Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Find the probability of exactly eight in ten births.
asked by chalulu on March 13, 2011 
maths
The shadow of a tower standing on a level ground is found to be 2x meters longer when sun's altitude is 30 degree than when it was 45 degree.Find the height of the tower.
asked by Ruth on October 17, 2013 
statistics
suppose you roll two number cubes and pick a letter of the alphabet at random. find the probability you will roll two odd numbers and pick one of the letters k, l, or m.
asked by logan on June 4, 2014 
math
Numbers is a game where you bet $1 on any threedigit number from 000 to 999. If your number comes up, you get $600.00, otherwise you lose the $1. Find your expected winnings if all numbers are equally likely to come up.
asked by ann on October 11, 2009 
Chemistry
A reaction : A(aq)+B(aq) > C(aq) has a standard freeenergy change of –4.01 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M,
asked by Alex on April 28, 2014 
algebra
i have four graphs and i need to find which one represents a function two of them didn't because they didn't pass the vertical line test so i got left with two who did pass it but now i don't know which one to pick since there is only one answer that's
asked by Anonymous on March 29, 2013 
Probabilities
Need some help please! A box contains four good light bulbs and three defective ones. Bulbs are selected one at a time (without replacement). Find the probability that the second defective bulb is found on the third selection.
asked by Bianca T on June 10, 2015 
Algebra
Each of the following temperature ranges is in degrees Fahrenheit. Use the formula F=95 C+32 to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion). a. below 32∘ b.above 122∘ c. below 5∘ d. above
asked by keonn'a on September 1, 2018 
physics31
1.A man in a hotair balloon drops an apple at a height of 150m. If the balloon is rising at 15 m/s, find the highest point reached by the apple.
asked by cedric on October 1, 2011 
English
Is the following sentence still a runon sentence/or is there grammar errors...Grammar quizzes can be tough, there is a lot to learn and it is hard to remember. I find that it gets easier with practice.
asked by Angelina on April 20, 2011 
GEN 300
describe your optimal learning times and optimal learning environment can someone please explain to me what my instructor might be wanting in this section I have read all the materials and I can not find nothin he might be looking for
asked by tom on May 18, 2008 
Texas Colleges
I would like to apply for scholarships. Is the site which was recently posted regarding college for all texans an online application site or did I misunderstand? I looked into it but could not find an application link.
asked by jules on August 2, 2008 
maths
a yacht is moving at 10km/h in a south easterly direction and encounters a 3km/h current from the north. find the actual speed and direction of the yacht
asked by nigar on November 9, 2014 
Advanced Maths (Vectors) AQA Level, please help?
An object is moving in a plane. At time t =0,it is at origin O, and moving with velocity u. After 2 seconds, it is at A, where OA = 2i  4j. After 3 seconds, it is at B, where AB= 10i 40 j. Show that this is consistent with constant acceleration a. Find
asked by Jat on February 26, 2012 
Algebra
Two cards are drawn from a standard deck of cards. Find the probability that a king or a red card is drawn?(4/52)*(26/52) 104/2704 answer 0.038
asked by Jon on March 5, 2008 
Calculus
(y+5)^2/169 + (x5)^2/49 =1 What are the coordinates of the foci, the ends of the major and minor axes and the end of each latus rectum. I already had the; V1(18,5);V2(8,5) B1(5,2);B2(5,12) F1(15.95,5);F2(15.95,5) I cabt find out the latus rectum
asked by Hannah on August 5, 2019 
Math
A hotel manager found that his gross receipts for the day, including a 9% sales tax, were $3927.27 . Find the amount of sales tax collected
asked by Makaila on July 13, 2015 
Physical Science
Turn an incandescent lamp on and off quickly while you are standing near it. You feel it's heat, but you find when you touch the bulb that it is not hot. Explain why you felt the heat from the lamp?
asked by Rachel on March 10, 2008 
Math
I'm having some trouble with this question: Find a value(s) that makes the expression y^2  16/ y^2  16 undefined. I know that for an expression to be undefined that the denominator must be 0, so I thought 8^2, but that would just result in 16 + 16. I'm
asked by Andre on April 15, 2019 
math
Revocatus paid back 30,000 shillings to the bank after 1 year. Find the amount of the loan if the bank charges 15% per year. #Please help me to solve this question#
asked by kevi on July 9, 2019 
Chemistry
Equal weights of methane and hydrogen are mixed in an empty container at 25 C. the fraction of total pressure exerted by the hydrogen is? answer is 1/9 i want to know that how to find out this answer thanks?
asked by Shahab Mirza on October 3, 2014 
finance
Find the NPV and PI of a project that costs $1,500 and returns $800 in year 1 and $850 in year 2. Assume the project’s cost of capital is 8 percent.
asked by Anonymous on May 30, 2012 
math
Find the set that describes the intersection of each pair of sets: a. C={people who are more than 20 years old}. D={people who are enrolled in college}. b. A={4,6,8}, B={2,4}. c. E={the odd whole numbers}, F={the even whole numbers greater than 40}.
asked by jeff on March 3, 2011 
CALCULUS: PLEASE HELP ME !!!!!
PlEASE HELP ME!!! I WOULD GREATLY APPRECIATE IT!!!! Find the least upper bound (if it exists) and the greatest lower bound (if it exists) for the given set. Please show all work. (0, 2) (−∞, 1) {x : x2 < 4} {x : x4 ≤ 16} {5/2,7/3,9/4} {0. 9, 0. 99,
asked by Anonymous on March 21, 2009 
Multivariable Calculus
A pentagon is formed by placing an isosceles triangle on a rectange. If the pentagon has fixed perimeter P, find the lengths of the sides of the pentagon that maximize the area of the pentagon.
asked by Shayna on November 20, 2012 
probability
For a family with 2 children, the sample space indicating boy (B) or girl (G) is BB, BG, GB, and GG. If each of the outcomes is equally likely, find the probability that the family has 2 girls, given that the first child is a girl.
asked by sarah on July 6, 2013 
mechanics
an object weighing 303N and suspended by rope A is pulled aside by the horizontal rope B makes an angle of 35degree with the vertical. find the tension in rope A and rope B
asked by kia3 on June 28, 2017 
math
A concert promoter wants to give away 240 tickets to 3 radio stations. Which basic math fact can he use to find 240 image 3 using mental math?
asked by nathalie on February 6, 2014 
Physics
a boat leaves shore and travels 30km east and then 15km 50 degree South of east Find the resultant the boats resultant displacement?
asked by Earl on June 18, 2014 
Geometry
An Aframe house is 40 feet high and 30 feet wide. Find the angle that the roof makes with the floor. Round the angle nearest degree.
asked by Jackie on March 6, 2012 
Debating
I need to provide arguments that mining is not horrible for the environment. I'm trying to look for stories that explain positive effects of mining, or how they help the environment (even if indirectly or in a small way). This is just very hard to find.
asked by Matt on March 20, 2009 
math
the cost of banana is Re.1 more than that of an orange. Mr asad purchased 12 bananas and 20 oranges . if he paid Rs.108 to the fruit saller, find the price of a banana and orange.
asked by fazalamin on November 30, 2016 
calculus help me pllllllllllz
Find out what kind of improper integral is given below §dx/{x^4+4}....?,hence evaluate the integral with upper boundary=infinity lower boundary =0 i need help plz show me full work
asked by samuel on September 26, 2016 
Calculus
How do i find the derivative of f(t)= 20 30/rooot 9 + t^2 heres how i did it f'(x)= 20'  30/root(9+t^2) ' = 0  30/root(9+t^2) ' (Quotient rule) f'(x)= 30' (root(9+t^2)  30(root(9+t^2) ' f'(x)= 30(0.5(9+t^2)^0.5) (2t) the answer at the back of the
asked by LALA on February 27, 2010 
physics
In a tennis serve, a .074 kg ball can be accelerated from rest to 40 m/s over a distance of 0.79 m.Find the magnitude of the average force exerted by the racket on the ball during the serve.
asked by Anonymous on October 28, 2010 
math
If the perimeter of a parallelogram is 140 m, the distance between a pair of opposite sides is 7 meters and its area is 210 sq m, find the length of two adjacent sides of the parallelogram.
asked by abhishek on October 7, 2011 
maths
A cylindrical vessel without a lid is made from a sheet of metal . Find the area of the metal required if the length of the vessel is 35cm and its diameter is 28cm ????
asked by tuhituhi on November 21, 2012 
Math
Hello! I need help with this question. I know that I'm using the Law of Sines, but I'm confused on how to solve. I have to also round my answers to the nearest tenth for degrees and to the nearest hundredth for sides. Thanks! Given: A = 60 degrees a = 9 c
asked by Tiffany on February 24, 2015 
Geometry
In the figure, (AC) ̅≅(AB). Find the value of y in terms of x. If the vertex angle of an isosceles triangle is y and the exterior angle ABE is 3x+20. Answer: y= 6x140 Pls explain it to me how they get the answer.
asked by Ashley on December 9, 2016 
Dynamics of rigid bodies
a 500g ball traveling with a velocity of 5m/s strikes a vertical wall rebounds with a velocity of 4m/s Find a) change in pressure of the ball b) Joule of the collision
asked by Vincy on June 5, 2017 
Physics
A truck of mass 7520 kg is traveling along a level road at an initial speed of 32.9 m/s and then slows to a final speed of 17.9 m/s. Find the total work done on the truck.
asked by Tarra on February 19, 2012 
MATH HELP PLEASE Explain
Onondaga Electronics operates on a netprofit rate of 20% on its printer cables. If the markup is $8.95 and the overhead is $4.31, find the net profit and the selling price
asked by Bradley on February 25, 2016 
Math
5 2/3  5= 2/3. Use a division algorithm to find the quotient. State the final answer as a mixed number. Why is the fractional part of your quotient different from your answer in the original equation 5 2/3  5= 2/3?
asked by Shannon on December 14, 2016 
physics
: a loaded truck with uniform acceleration covers the distance between two points 60m apart in 6 sec.its velocity as it passes the first point is 5 m/s .find the velocity at second point
asked by Anonymous on July 3, 2012 
physics
A proton moves at a speed of 5.9 × 107 m/s at right angles to a magnetic field with a magnitude of 0.095 T. Find the magnitude of the acceleration of the proton. Answer in units of m/s 2 .
asked by grace on May 6, 2019 
geometry
In triangle ABC, X and Y are the midpoints of BC and AC, respectively. The perpendicular bisectors of BC and AC intersect at a point O inside the triangle. If angle C = 47 degrees, then find the measure of angle XOY?
asked by Julie on June 5, 2015 
mechanics
two bodies of mass m1 and m2 are attached to two ends of a string which passes over a massless and frictionless pulley. find the acceleration of the bodies and the tension of the string. m1 is bigger than m2
asked by andrew on November 22, 2012 
Math
in a certain city the temperature (in degrees fahrenheit) to hours after 9am was modeled by T(t)=50+14Sin((pi(t))/12. Find the highest temperature during the period from 9AM to 9PM. Indicate units
asked by Anonymous on November 29, 2018 
calculus
The base of a solid is bounded by the curve y= sort (x+2) ,the xaxis and the line x = 1. The cross sections, taken perpendicular to the xaxis, are squares. Find the volume of the solid.
asked by Anonymous on August 29, 2015 
Maths
Find the volume of wood required for making the closed box with internal dimensions of 20cm by 12.5cm by 9.5cm;wood 1.25cm thick.
asked by Priyanka on January 23, 2018 
physics
a body is thrown vertically upward fron a certain height of pole and their velocity is 100m/s and then it returns to the ground in 6second then find the height of the pole ?
asked by Aryan on July 26, 2017 
Precalculus
A builder has 600 feet of fencing to enclose three adjacent rectangular partioned areas. Find the largest possible enclosed area of the partioned areas.
asked by John on December 2, 2011 
percentage
There are two distinct natural numbers. Each is first increased by 10 then by same percentage as each was increased for the first time. Each number finally results in 72 Find the difference between the numbers Please explained in simplified way
asked by vipul on October 4, 2016 
ms.sue help!!! (math )
hi im doing surface area I wondering how do you get the answer . this is the question Find the total surface area of a rectangular prism having dimension 1) 45cm by 30cm by 20cm
asked by rian on February 3, 2014 
thermodynamics
the mass of a fluid system is .311 slug, its density is 30lb.ft^3 and g is 31.90fps^2. a) find the specific volume, b) the specific weight, and c) total volume
asked by 18ms on December 8, 2012 
math
pretty stuck on this one, any help apreciated: the angular displacement (feta) of a shaft is given by feta= 1/2 (cos5t. Find the velcoity of the shaft w at t= 2s my apologies for the improper layout.
asked by Russ on November 19, 2012 
Variation
Could you please help me with the following question? Find the variation equation for the variation statement. 31. z varies jointly as y and the cube of x; z=96 when x=2 and y=6 (I don't understand this one. My answer choices are: a.y=2x^3y,b.y=2xy^3,
asked by Soly on October 10, 2007 
Physics
an empty truck weighs 4000N its engine can produce an accelerationof 1m/sif the truck is loaded with 2000N, find the acceleration the engine can prodeuce?
asked by syed on August 31, 2015 
Algebra
The temperature y (in degrees Fahrenheit) after t months can be modeled by the function y=3t^2+18t+53 where 1
asked by Kylet davis on March 4, 2016 
trig
find the exact solutions (è in degrees) sin^2è+2cosè=2 change the sin^2 to 1cos^2, then rearrage the equation into quadratic form, use the quadratic equaion.
asked by Devon on April 16, 2007 
Engineering
There is a shape that has a right triangle on top of a square, I need to find the area of the shape H1\  \  \  H2 ___ B B=20Ft H2= 75lb/ft H1= 150 lb/ft I got 600 for the total area, am I close
asked by Victor on August 7, 2009 
biology
Evidence of bacterialike life has been found in fossils that date back between 3.4 and 3.5 billion years. Can you find out what the oldest evidence of multicelled life is?
asked by Anonymous on September 27, 2011 
trigonometry.
In a right triangle sinA= 3/5 and C=17. Find a and b. Be sure to draw a right triangle and letter it properly. how can i solve the math in this problem. i know i would have to use the Pythagoream Theorem but i don't know how to set the problem up first.
asked by anon on January 10, 2011 
5th math
find the missing numbers and landmarkd for the set of numbers below: 18,20,20,24,27,27,____,30,33,34,36,36,_ Range:22 Mode:27 Minimum______ Maximum:______ please! show me this problem so, i can do my next problem thank you!!
asked by pat on September 29, 2010 
Trigonometry
Use a sine function to graph a sound wave with a period of 0.004 of a second and an amplitude of 3 cm. Find the frequency in hertz for this sound wave. (Enter only the number.)
asked by Mariah on October 1, 2014 
math
Rose’s garden is in the shape of a trapezoid. If the height of the trapezoid is 16 m, one base is 20 m, and the area is 224 m2, find the length of the other base. How do I set up this problem so I can solve it? Thank you!
asked by Millah on September 29, 2007 
Algebra
The temperature y (in degrees Fahrenheit) after t months can be modeled by the function y=3t^2+18t+53 where 1
asked by Kylet davis on March 2, 2016 
calculus
Verify that the hypotheses of Rolle’s Theorem are satisfied for f(x)=6cosx on the interval [9pi/2,11pi/2] and find all values of c in this interval that satisfy the conclusion of the theorem.
asked by Mely on August 1, 2010 
algerbra 2
Lisa buys a carpet for $230. The price is $3.50 per square foot. If Lisa had a special discount of $50 off, which linear equation could be used to find the area, A, of the carpet?
asked by hannah on October 24, 2013 
algebra
A guy wire 70ft. long is stretched from the ground of the top of a telephone pole 50ft. high. Find the angle between the wire and the pole?
asked by Felicido on September 6, 2018 
math
A nurse must give 1 12 milligram of a drug for each kilogram of patient weight. If Mr. Krisanda weighs (or has a mass of) 60 kilograms, find the amount of the drug Mr. Krisanda should be given.
asked by julie on February 17, 2018 
Maths
A cone formed by bending a sector of a circle having an angle of 288 degrees. Find the radius of the base of the cone if the diameter of the circle is 18cm
asked by Anonymous on September 13, 2018 
mathematics
Find I. Choose the correct answer. Amount Financed (m) = $1,400 Number of Payments per year (y) = 12 Number of Payments (n) = 24 Total Interest (c) = $200.50
asked by Anonymous on June 16, 2015
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