
math
A bacteria culture starts with 1,000 bacteria and doubles in size every 2 hours. Find an exponential model for the size of the culture as a function of time t in hours. f(t) = 1
asked by liz on October 9, 2010 
value
A Body Is In Equilibrium When Three Forces Act On It,two Of The Forces Are F1 Of Magnitude 8n Acting Dud East And F2 Which Is 5n Acting N60degree East.Find The Magnitude And Direction Of The Third Force.
asked by value on October 8, 2016 
statistics
According to a college survey, 22% of all students work full time. Find the mean and standard deviation for the number of students who work full time in samples of size 16.
asked by Hannah on March 16, 2015 
physics
A cart of mass M1 = 4.00 kg and initial speed = 4.00 m/s collides head on with a second cart of mass M2 = 2.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision. i keep getting 2.3 m/s what am i doing wrong?
asked by courtney on March 7, 2008 
physics
write down the uncertainty in the volume of the cylinder (3.36*10^2) write down the minimum uncertainty with which the volume of the cylinder can be determined (1.79*10^2) it says to compare these values and discuss briefly. I figured out how to find
asked by Anna on February 15, 2009 
chemistry
There are exactly 60 seconds in a minute, there are exactly 60 minutes in an hour, there are exactly 24 hours in a mean solar day, and there are 365.24 solar days in a solar year. Find the number of seconds in a solar year.
asked by Mely on September 4, 2010 
Physics
A man using 80kg garden tractor on a level surface exert a force of 50N at 65^0 to the ground. Find the vertical force of the garden tractor on the ground
asked by Eric on November 4, 2018 
ChemistrypH
Question: v cm3 of a 0.2 M HX solution and v cm3 of 0.1 M KOH solution is mixed.pH of the final solution is 5.3 1)Find ka of HX 2)Find the moles of NaOH and HCl should be added respectively,for the pH of 1dm3 of the solution to increase and decrease by 1
asked by Shenaya on May 31, 2017 
Physics
A woman stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.70 of her regular weight. 1).Calculate the magnitude of the acceleration of the elevator. Express your answer to two significant
asked by Alex on September 19, 2016 
health care
Health care is evolving and facing increasing challenges related to reimbursement, staff shortages, patient safety, increasing costs, and increasing regulatory requirements. As a health care leader, ehich leadership skills do you find most valuable when
asked by annoymous on February 3, 2010 
physics
a boy stands on a cliff overlooking a lake below. He throws a rock at an initial velocity of 8.0m/s,at an angle 25 degrees above the horizontal. The lake's surface is 4.5 m lower than the point the rock was released. Find the speed of the rock just before
asked by bec on November 7, 2011 
computer Science
20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says â€œ'invalid specificationâ€. What does the error mean?â€ a. an attempt to overclock the primary drive has failed. b. The hard drives
asked by Steven on January 28, 2014 
Physics
A skateboarder moving at 7.18 m/s along a horizontal section of a track that is slanted upward by 48.5 ° above the horizontal at its end, which is 0.741 m above the ground. When she leaves the track, she follows the characteristic path of projectile
asked by Zac on October 16, 2014 
physics
need help with the following question. if earth has a mass of 6.0*10^24 kg and a radius 6.4*10^6 m: a) find the change in gravitational potential energy of a meteorite of mass 150 kg as it moves from an infinite distance to the earth's surface. b) with
asked by rachel on September 24, 2011 
English
I have to write a interpeting atory paper on Sunday in the Park in my texted book. My three reasons are: Reason 1: she sees everything that her father does and expects her husband to do the same. Reason 2: views on men in society Reason 3: men are the head
asked by Amanda on November 18, 2008 
Trigonometry
I really need help with this trigonometry question.please any help is appreciated. 1.I have to draw the graph of y=cos x from 0deg to 360deg. 2.Be sure to show a table of vales similar to the this table. colum X l colum :y=sinx 0 l 0.00 pi/10 l 0.31 pi/5 l
asked by anon on March 7, 2011 
physics
16)You are pushing a 55N lawnmower across the yard. Its handle makes a 55 degree angle with the ground. What force are you exerting on the handle? A)1 N B)67.1 N C)95.89 N D)3025 N I got C 17)Two men pull a 31 kg box with forces 9.7 N and 7.6 N in both
asked by Jon on April 1, 2008 
College Physics
The ball launcher in a pinball machine has a spring that has a force constant of 1.50 N/cm. The surface on which the ball moves is inclined a = 14.5o with respect to the horizontal. If the spring is initially compressed 4.70 cm, find the launching speed of
asked by Emily Shinavier on September 30, 2012 
computer Science
20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says â€œ'invalid specificationâ€. What does the error mean?â€ a. an attempt to overclock the primary drive has failed. b. The hard drives
asked by Steven on January 22, 2014 
math
of 500 employees, 200 participate in a company's profit sharing plan (P), 400 have majormedical insurance coverage (M). and 150 employees participate in both programs. Construct a Venn diagram and find out the probability that a randomlyselected
asked by marina on October 12, 2011 
Chemistry
I'm doing a redox potential/lead acid cell experiment and one of the questions that were asked was: What were the identities of the gases you saw being produced at the + and  electrodes during the cell conditioning process? We used H2SO4 How do I go
asked by Albert on December 3, 2014 
psychology
20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says â€œ'invalid specificationâ€. What does the error mean?â€ a. an attempt to overclock the primary drive has failed. b. The hard drives
asked by Steven on January 22, 2014 
math
A man who can swim at 5km/h in still water swims towards the east to cross arriver. If the river flows from north to south at the rate of 3km/h a) Calculate: i) The resultant speed ii) The drift b) If the width of the river is 30m, find the time taken, in
asked by kudu on February 21, 2015 
Maths
Can you give me some help with this question im not sure how to even start in a reaction A to P the mass of A at any given time T is Mt and the rate of transformation of A at time T is prportional to Mt given that the original mass of A is 130g and that
asked by Amelia on November 28, 2009 
Physics
A series of waves traveling at 200 m/sec are being generated by a 100 Hz source. A point at the very top of the crest of a certain wave is ____ meters from a corresponding point 3 crests away. a. 0 b. 1.5 c 2.7 d 4 e 6 f 12 g 16 h 30,000 I have no clue
asked by Jael on November 14, 2010 
physics
16)You are pushing a 55N lawnmower across the yard. Its handle makes a 55 degree angle with the ground. What force are you exerting on the handle? A)1 N B)67.1 N C)95.89 N D)3025 N I got C 17)Two men pull a 31 kg box with forces 9.7 N and 7.6 N in both
asked by Jon on April 1, 2008 
Language Arts
What is the secret to reaching someone with words? Which of the poems—"Concrete Mixers," "The City Is So Big," or "Harlem Night Song"—best uses words to create a vision or an idea of the city for you? In a paragraph, state your opinion and support it
asked by CyberDarkness on February 17, 2016 
maths PLEASE HELP
Can you give me some help with this question im not sure how to even start in a reaction A to P the mass of A at any given time T is Mt and the rate of transformation of A at time T is prportional to Mt given that the original mass of A is 130g and that
asked by Amelia on November 29, 2009 
chemistry
I did a lab on pressure and depth today. This lab was to simply submerge a plastic tube into a large graduated cynlinder to find the relationship between the two. I found that as the depth increases, so does the pressure. One of the questions I'm stuck on
asked by CL on January 11, 2010 
John Jay
Where can I find the correct meaning of the following terms: Stereotype, Gender group, Pluraism, Sociology, Minority group, Assimilation, Conflict perspective, Segregation, Ethnic group, Racism, Class Subordinate group, Social construction of race, Racial
asked by Stacey on March 26, 2008 
Finite Math
Find the amortization table for a $13,000 loan amortized in five annual payments if the interest rate is 8.1% per year compounded annually. (Round your answers to the nearest cent.) End of Period Payment Payment Toward Interest Payment Toward Principal
asked by Micaela on December 6, 2018 
Geography
I'm doing a project on Kenya. Wanted to bring in some cookies for baked product from Kenya. Can't find any site anyone have a good easy receipe?
asked by Taunya on January 17, 2007 
Math
A very strong girl runs 200 miles east for several hours. After a brief rest she runs another 100 miles north. She stops for the night at a local bed and breakfast and the next morning walks 75 miles directly southeast. Find the magnitude and direction of
asked by Kevin on November 23, 2010 
physics
A 120 N child is in a swing that is attached to ropes 2.20 m long. Find the gravitational potential energy of the childEarth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal (b) when the ropes make a
asked by Katie on October 18, 2010 
MATH
A company will need 65,000 in 6 years to add an addition. to meet this goal the company deposits money in an account today that pays 5% annual intrest compoundded quarterly. Find the amount that should be invested to total 65,000 in 6 years. the company
asked by mleya on November 28, 2014 
calculus
im not good in math. The Grand Canyon is 1600 meters deep at its deepest point; a rock is dropped from the rim above this point. Express the height of the rock as a function of the time t in seconds. How long will it tale the rock to hit the canyon floor?
asked by marlyn on December 5, 2009 
Calculus
A professional athlete signs a fouryear contract in which the earnings can be modeled by c = 300,000 + 750,000t, where t represents the year. (a) Find the actual value of the athlete's contract. (b) Assuming an annual inflation rate of 4%, what is the
asked by Calculus Help on November 12, 2015 
science
what is a ph scale? what is a acid? what is alkalis? what acid and alkais can you find around the house? (put pictures to go with this). when u are giving an explanation of what ph scale, acid and alkalis mean plz be as clear as possibe, use understandable
asked by denessta on October 31, 2012 
Algebra
Scott set up a volleyball net in his backyard. one of the poles, which forms a right angle with the ground, is 6 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 8 feet from the bottom of the pole. To the nearest tenth
asked by Ricky on June 11, 2014 
Chemistry
Draw Lewis dot structures, including appropriate resonance forms, and assign formal charges to each of those structures, for the molecule urea, with chemical formula NH2CONH2. You should find at least 3 such structures, some of which will have formal
asked by Emma on October 25, 2009 
English
We are doing this group project where we have to teach the class our vocab words. My job for the project is to make big flashcards with pictures of the words on it. One of the words is vignette, and I have no idea what picture to use, the definition is
asked by Emily on February 10, 2010 
chemistry 2
A certain gas is present in a 11.0 \({\rm L}\) cylinder at 1.0 \({\rm atm}\) pressure. If the pressure is increased to 2.0 \({\rm atm}\) , the volume of the gas decreases to 5.5 \({\rm L}\) . Find the two constants \(k_{\rm i}\), the initial value of
asked by Froyce on June 29, 2019 
Algebra
A particle P of mass 2gms moves on the Xaxis and is attracted towards origin O with a force numerically equal to 8x. If it is initially at rest at X = 10, find its position at any subsequent time assuming (a) no other force acts, (b) a damping force
asked by Vijaya on April 25, 2017 
Chemistry 11th
Solid ammonium nitrate breaks down into nitrogen, water vapor, and oxygen. If there was 300g of the solid and the reaction happened under STP find the total volume of the products. (translating words to eqns., balancing eqns., understanding what STP means)
asked by Reyna on June 1, 2010 
Physics
Two large, parallel, conducting plates are 20 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 3.0 1015 N acts on an electron placed anywhere between the two plates. (Neglect fringing.) a)
asked by Lex on April 27, 2013 
geometry
Suppose the dimensions of a rectangle with a perimeter of 22 inches are tripled. Find the perimeter of the new rectangle in inches.
asked by avril on March 9, 2011 
Maths
A bag contains 18 balls out of which x balls are red balls will be 9/8 times the probability of not drawing red balls. Find value of x .
asked by Dewanshi on October 1, 2017 
Maths
In a parallelogram the base and height are in the ratio 5:2.if the area of the parallelogram is 360m2.find it's base and height.
asked by Shankar on December 27, 2016 
math
The ratio of the length and breadth of a rectangular playground is 9:5. If the breadth is 360m,find the length of the playground.
asked by bhoomika on December 10, 2015 
math
in the frustum of a cone,the top diameter is twice the bottom diameter. if the height is h cm, find the height of the cone
asked by Jay on August 20, 2015 
Calculus
Find the Absolute Maximum and Absolute Minimum of f on (0,3]. f(x)=(x^34x^2+7x)/x Multiple choice question I know the minimum is (2,3) but the maximum is either nothing or (0,7) but I can't tell which one
asked by Henry on November 7, 2015 
Science
Types of constructive forces? I'm doing a project, and can't find types of constructive forces. Please include links.
asked by Ryan on January 16, 2019 
Math
If you want to add 2/3 and 3/5, you will find the LCM of the denominators then divide the LCM of the denominators and multiply it with the numerators then add it...
asked by Sheena Jane on September 24, 2016 
Math
Find the distance, d across the river. Assume the ratio of d to 75 ft is the same as the ratio of 40 ft to 20 ft. The distance across the river is _____ feet. is it 37.50?
asked by Jazmyne on January 5, 2012 
Maths
In a parallelogram the base and height are in the ratio of 5:2 ,if the area of parallelogram is 360 find base and height
asked by Rohit on March 5, 2017 
math pre calculus
Let A=(2,INF] and B=(2,INF). FIND: a.)AUB b.)A (UPSIDE DOWN "U")B c.)A\B d)B\A *I was thinking a was (2,inf), b was (1,2), c was (1,1) and d was (2,inf) but i don't think that is right since i don't have a U in the answers.
asked by loe on September 1, 2011 
calculus
the tangent line to the curve y=1/3(x^3)3x^2+11x+15 is parallel to the line 9x3y=2 at two points on the curve.Find the two points.
asked by Joseph on December 13, 2010 
Calc 3 Surface Area
Find the surface area of the indicated surface. 1.) The Portion of z=4y+ 3x^2, between y=2x, y=0 , and x=2 2.) The Portion of z= x^2 + y^2, below z=4 . 3.) The portion of z= sqrt(x^2 +y^2) between y=x^2 and y=4. 4.) The portion of 2x+y+z=8 in the first
asked by Jay on October 22, 2015 
maths
In a class of 50 students 25 take hindi and 16 take marathi.12 students take no languages. Find how many takes both hindi and marathi.
asked by kumar on November 30, 2018 
Algebra
The sum of two numbers is 9. Four times the larger number plus three times the smaller number is 48. Find the numbers. Thank you
asked by Pam on August 12, 2014 
Math
The formula SA=4s can be used to find the surface area of a cube. What is the surface area of a cube with lengths of 8 1/2 inches?
asked by Amy on February 4, 2015 
Geometry (Mathematics)
The length of a rectangle is 15 m longer tan it's width. The perimeter of the rectangle is 74 cm. Find the length and width.
asked by Kevin on May 22, 2012 
Algebra 1A
find the decimal notation for fraction7/13 the decimal notation for the fraction round to the nearest hundredth. help
asked by Lea on September 26, 2009 
math
markup rate base on selling price =22%; markup =$270. find the selling price
asked by eve on March 2, 2016 
math
A package contains 9 candy canes, 6 of which are cracked. If 2 are selected, find the probability of getting no cracked candy canes.
asked by yorkie16 on April 23, 2009 
Math
One angle of a triangle is 45* greater than the smallest angle, and the third angle is 5* less than twice the smallest angle. Find the measures of the three angles.
asked by Renae on May 2, 2016 
math
find the permutations one person select 4 books, 2 cds, 1 dvd from 10 books, 20 cds, and 5 dvd
asked by ashford on October 14, 2012 
maths
the ages of a son and father are in ratio 3:8. If the son is 35 years younger than his father find their ages.
asked by riaan on April 13, 2013 
math
Area of a Triangle. The area in square meters of a triangle is given by A(x)=x^2+5x+6 a)Find A(5) b)If the length of the triangle is x+3 then what is the base of the triangle?
asked by Debbie on March 4, 2009 
Math: Parabola, Vertex
Find the vertex of the parabola associated with the quadratic function. f(x)= 1/7x^2  2/11x + 1/121 (h,k)= What is the vertex of this quadratic function?
asked by John on July 13, 2011 
algebra 1
The base of a triangle is 3 cm greater than the height. The area is 27 cm squared. Find the height and base of the triangle.
asked by jerry on December 15, 2016 
Math
If alpha, beta are the zeroes of x22x+3, find a quadratic equation whose roots are (alpha1)(beta+1), (beta1)(beta+1)
asked by nishtha on June 25, 2017 
Geometry  plz help
The radius of a right circular cone is 6 inches and the height is 8 inches find the slant height of the cone.
asked by Mary on May 25, 2011 
math
The length of a rectangle is 8 inches more than three times the width. The perimeter is 88 inches. Find the length and width
asked by latesha on December 17, 2011 
geometry
RST with vertices R (2, 2) , S (3, 1) , and T (1, 1) is translated by (x, y) → (x  1, y + 3) . Then the image, RST , is translated by (x, y) → (x + 4, y  1) , resulting in R "S"T ". a. Find the coordinates for the vertices of R "S"T ".
asked by Anonymous on January 6, 2014 
algebra
the width of my garden is 10 feet shorter than twice the length. the perimeter is 70 feet. find the length and the width
asked by Amanda on September 3, 2015 
Maths
P, Q and R are three towns. Q is 40 km N 72°E of P and R is 48 km S 55° E of P. Find the distance and bearing from Q to R. Round the distance to the nearest 0.1 km and the bearing to the nearest minute.
asked by Brooks on March 19, 2013 
Algebra HELP
Find the mean,median, mode, and range. 10,8,12,6,5,4,10. This is what I got: Mode:10 Median:8 Mean: 7.9 Range: 8 However, none of these are the answer choices. Am I doing something wrong??
asked by Hannah on November 18, 2017 
Chemistry
Please help! I can't seem to set this up right At any given temperature 2NO(g) + O2(g) 2NO2 kp=1X10^4 2NO2(g) N2O4 kp=1X10^1 Find the kp 2NO(g) < > O2(g) + N2(g) kp=?
asked by Lola on May 18, 2014 
Math
find three consecutive even intergers for which the sum of the first two integers is greater than 9 more than the third integer, and the sum of the first and third integers is less than 17 more than the second integer
asked by Roy on September 14, 2009 
math
An example of consecutive odd numbers is 23, 25, 27, and 29. Find the smallest of four consecutive odd numbers with a sum of 160.
asked by Carlos on February 27, 2018 
calculus
The Cost C of a product is a function of the quantity x of the product: C(x)=x^2400x+50.Find the quantity for which the cost is minimum.
asked by Arvin on November 2, 2012 
geometry
YW is a bisector of
asked by Tricia on September 18, 2010 
maths
54% of the pupils in a class are girls. what % of pupils are boys? if the number of boys are 23. find the strength of the class.
asked by sr on June 2, 2017 
midpoint question
find the midpoint between these points (2,7)and (8,5) thank you midpoint is (sum of the x values/2,sum of the y values/2) (really you are just finding the "average" of the x's and y's.) tell me what you get.
asked by cecilia lopez on May 8, 2007 
Math
Find the measure of each angle in the triangle. I can't post a picture of the triangle it won't let me. Angle A = 5x +8 Angle B = 4x + 2 Angle C = 8x Thank you
asked by Sara on June 3, 2019 
Math
A bag contains forty coins, all of them either 2c or 5c coins. Let there be x 2c coins and y 5c coins. If the value of money in the bag is $1.55, find the number of each kind.
asked by AJ on May 12, 2011 
pre algebra
Triangle XYZ has vertices X( 1, 1), Y( 3, 1), and Z( 2, 5). Reflect triangle XYZ in the yaxis. Find the vertices of the image
asked by amy on May 31, 2012 
Math
You pick two cards from a deck of 52 cards. Find the probability that the first card was a spade given that the second card was a spade.
asked by Maria on December 5, 2012 
Algebra
The floor of a shed has an area of 54 sq.feet. Find the length and width if the length is 3 feet less than twice its width.
asked by Lora on March 28, 2013 
Math
Area of rectangular hall is 165sq.m.if the length is 4m more than its breadth.find the length and breadth of the hall
asked by Shuba on October 5, 2017 
algebra
Find the length and width of a rectangular lot with a perimeter of 70 meters if the length is 5 meters more than the width
asked by tonya on April 16, 2009 
Math
Shantanu's age is 3 years more than Tanya's age.The sum of their ages is 27 years.Find their ages.
asked by Anjali on January 17, 2017 
maths
Find a fraction which reduce to 2/3 if the numerator and the denominator are each increased by 1 and reduce to 3/5 if the numerator and the denominator are each reduced by 2
asked by madhan on November 21, 2016 
math
Enzo is 7 years younger than Ezra.Five years later,Ezra will be twice as old as Enzo.Find their present ages
asked by bea on January 16, 2017 
Math
Given sin30= 1/2 and cos30= (√3)/2 determine the following  csc30 I see the sin30 part can be used to find the answer, but what about the cos30 part?
asked by Anonymous on September 10, 2015 
singh
a circle inscribed in regular hexagon with each side of regular hexagon √3 cm find area of circle
asked by Abhishar on January 19, 2017 
math
u=(2 cos pi/4)i + (2 sin pi/4)j, v = (cos 3pi/2)i + (sin 3pi/2)j find the angle theta between the two I'm at a lost on what to do.
asked by John on March 31, 2010 
Math
Runner runs 8 miles at 5 miles per hour, then another 2 miles at 7 miles per hour, find average speed.
asked by Nerd101 on February 15, 2011 
math
Find The Area Of The Parrelogram. 60ft x 67ft x 52ft 60ft x 67ft x 52ft 2(60*67 + 60*52 + 67*52) = 21248 ft^2
asked by Hayden on March 15, 2019
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