
Early Childhood
Small group discussions with preschoolers enables them to: A. find out if they are superior. B. learn to argue. C. outsmart the others and gain teacher attention. D. compare their ideas with peer ideas.
asked by cynthia on February 19, 2015 
math
A diagram shows a straight line graph of In y against x,passing through the point (0,2) and having gradient 3/2 . The variables x and y are connected by the equation y=pq^x ,where p and q are constants Find (i)the value of p and of q ,to one decimal place
asked by Claudia on August 8, 2013 
Calculus
Given the function 6x+3y=18, find the area under the curve from x=0 to x=3 using 3 strips of equal length using the right end points. I was working on this and so I made the equation equal to Y=mx+b form so it ends up being Y=2x+6, and now I am completely
asked by Maya on June 17, 2016 
pre calculus
Forces with magnitudes of 250 pounds and 130pounds act on an object at angles 45degrees and 60degrees respectively with the positive axis. Find the direction and magnitude of the resultant of these forces.
asked by Anonymous on November 26, 2016 
precalculus
Is this correct if not could you explain how to make it correct? find (a)2v+u, (b)u3v), and (c)5uv. u=ij v=6i+9i a. 2v+u u=ij, v=6i+9i =(12i+18j) + (ij) =13i+ 17j b. u3v (ij)(18i+27i) 17i  26j c. 5uv (5i5j)(30i+54j) 25i  59j
asked by Alice on November 26, 2016 
calculus
Marine ecologists estimate the reproduction curve for swordfish in a fishing ground to be f(p) = −0.01p^2 + 8p, where p and f(p) are in hundreds. Find the population that gives the maximum sustainable yield, and the size of the yield.
asked by aj on March 4, 2018 
persuasive speaking
i am struggling with the need, plan advantage format for public speaking. i've already consulted my textbook and notes, i still am not understanding the material. is there any websites i can consult to find this format/an explanation? i tried googling it
asked by Kinley on June 15, 2009 
statistic
In a survey, 3 of 4 students said the courts show "too much concern" for criminals. Find the probability that at most 3 out of 7 randomly selected students will agree with this statement. Round your answer to the nearest thousandth.
asked by miyah on October 22, 2017 
Biology
What is the reaction that creates polysaccharides? What covalent bond forms between 2 sugars? Which is the main group involved in this bond formation? I've been reading my book for hours and I can't find the answer to this
asked by Bree on February 22, 2017 
Physics
A stone is thrown from ground level at 72 m/s. Its speed when it reaches its highest point is 46 m/s. Find the angle, above the horizontal, of the stone's initial velocity. Answer in units of degree
asked by Jordan on October 6, 2015 
Geometry
The math club of Ritzy High designed a pennant for the school yacht. The pennant was in the shape of an isosceles triangle. Two points, P and Q, are located so that AC= PQ= QB. Find the measure of angle B.
asked by Emily on June 9, 2012 
physics
The water skier there has a mass of 71.0 kg. Find the magnitude of the net force acting on the skier when (a) she is accelerated from rest to a speed of 14.0 m/s in 9.00 s and (b) she lets go of the tow rope and glides to a halt in 16.0 s.
asked by Anonymous on June 9, 2012 
physics
"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)
asked by Allie on April 20, 2012 
physics
A 4.3 g mass is released from rest at C which has a height of 0.8 m above the base of a looptheloop and a radius of 0.31 m. The acceleration of gravity is 9.8 m/s2 . Find the normal force pressing on the track at A, where A is at the same level as the
asked by luke on June 18, 2013 
earth/space science
Walking along the sidewalk one day, you find a rock and want to know what kind it is. You look at it and se that it is an off white color, is greasy feeling when you rub it, and your fingernail scratches it and breaks it up. What kind of mineral do you
asked by Ariel on October 5, 2010 
English
I love to do creative writing. For school we have a contest called Power of the Pen that competes all over the state. I am going to the state compition and want to practice for it. How can I find inspiring things to write about?
asked by Taylor on March 16, 2008 
Math
19. A family takes a car trip. They travel for an hour at 80 km/h and then for 2 hours at 40 km/h. Find the average speed. (Hint, Remember to consider the total distance and the total amount of time.)
asked by June on April 26, 2013 
11th grade
When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 5.3 m/s2 as it slows from 9.5 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s
asked by leigha on October 11, 2010 
Calculus
Find the distance, in feet, a particle travels in its first 2 seconds of travel, if it moves according to the velocity equation v(t)= 6t2 − 18t + 12 (in feet/sec). A. 4 B. 5 C. 6 D. 1 Please helpp, I'm struggling! Thank you in advance for your help!
asked by Kyle on June 24, 2019 
check my set up please
At a horizontal distance of 34 meters from the base of a tower, the angle of elevation to the top is 72 degrees. Find the line of sight distance to the nearest meter. I set this up tan72=x/34
asked by Anonymous on June 1, 2014 
math
Two cards are selected at random without replacement from a wellshuffled deck of 52 playing cards. Find the probability of the given event. (Round your answer to three decimal places.) A pair is not drawn.
asked by mulat on June 24, 2019 
MATH Middle School
The area of two rectangles is 360 square centimeters. The length of the second rectangle is 12 cm greater than the first while its width is 5 cm less than the first. Find the difference of the perimeters of the two rectangles if the lengths and widths are
asked by PLEASE HELP on October 17, 2011 
physics
A stone is dropped from the top of a tower 400 m high and at the same time another stone is projected upward vertically from the ground with a velocity of 100 ms −1 . Find where and when the two stones will meet.
asked by Deepa on September 12, 2015 
Algebra
During the first part of a canoe trip, May paddled 20 km up steam and 20 km back in a total time of 5 hrs. The speed of the river is 3 km/hr. Find May’s speed in still water. Set up the equation first then solve.
asked by john on November 24, 2015 
matn
need help with word problem? half add it Find a number such that when added to numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks for any help (x+2)/(x+11) = 1/2 x is the number you want. Now do the algebra. I will be happy to
asked by vince on March 8, 2007 
geometry
Find the area of the shaded part (the two diagrams are circular sectors) given that central angle is 60 degrees and the bigger radius 7cm, width of the shaded portion is 2cm.
asked by Nandhini on August 25, 2011 
A.p.
Sri Ram paid ₨. 200 for a machine. At the end of 7th year it was valued at ₨.95. Assuming the yearly depreciation a constant amount. Find the annual depreciation.
asked by warnar on December 24, 2016 
statistics
A food manufacturer samples 7 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 14.2 oz and the sample standard deviation is 0.60 oz., find the 95% confidence interval of the true mean.
asked by Anonymous on March 16, 2014 
Statistics
A box contains twelve candies, five reds, four greens, and three blues. You select one piece at random, then replace it, then you select another. If P(BG) is the probability of selecting a blue first and a green second, find the following probabilities. a.
asked by Keonn'a on October 13, 2018 
Algebra II
Y=16X^2+100X+6 where x is the time in seconds and Y is the height in feet. find the zeros of the function? What do the zeros represent and are they realistic? and about how high does the rocket fly before hitting the ground?
asked by Walter on February 14, 2010 
Calculus
Determine the intersection, if any, of the planes with equations x + y  z + 12 = 0 and 2x + 4y  3z + 8 = 0. I have no clue where to even begin. If someone could help and give me the steps to complete it, that would be greatly appreciated. Do I have to
asked by Ad on December 18, 2014 
CALCULUS 2
Use calculus to find the volume of the following solid S: The base of S is an elliptical region with boundary curve 9x^2+4y^2=36. Crosssections perpendicular to the xaxis are isosceles right triangles with hypotenuse in the base.
asked by ADELINE on February 4, 2014 
Maths
The radii of three concentric circles are 2cm, 3cm and 4cm Find the ratio of the shaded areas A (the second circle from the inside) and B(the outer circle) (Hint: don't substitute for pi)
asked by Math's Noob on January 8, 2012 
HEALTH
Why are many fad diets considered unhealthy? A. Because they may not provide all of the nutrients your body needs B. Because they often promise quick weight loss C. Because people typically find it difficult to keep lost weight off D. All of the above D?
asked by Aya on August 1, 2012 
math/calculus
You are given the four points in the plane A(3,6),B(0,6),C(5,7),D(8/7) . The graph of the function f(x) consists of the three line segments AB ,BC and CD . Find the integral f(x)from 3 to by interpreting the integral in terms of sums and/or differences
asked by Mattie Boren on April 23, 2010 
Math
The bases of a trapezoid are 24 and 33 inches long and it encloses an area of 571. Without determining the height of the trapezoid find the areas of the triangular regions into which the diagonals divide the quadrilateral?
asked by Allison on May 29, 2010 
Physics
A circular loop of radius "a" is rotated at constant angular velocity ω in a uniform magnetic field B. Find the magnitude of the net induced emf on the loop at any given time
asked by AlejandroP on May 29, 2011 
algebra
Two questions actually. Please only respond with stepbystep answers. Feel free to change the numbers, I just need to know how to do it... 1.) Factor Completely: 4a^2 + 81  36a 2.) In a right triangle, find the length of the side not given. b= 2 c= sqrt.
asked by Jenny on May 2, 2010 
math
The length of the fence of a trapeziumshaped field ABCD is 130m and side AB is perpendicular to each of the parallel sides AD and Bc.if BC=54m,CD=19m and AD=42m,find the area of the field.
asked by guru on December 27, 2011 
Math
Find the adjusted balance due at maturity for a 90 day note of $15000 at 13.7% ordinary interest if a partial payment of $4000 is made on the 60th day of the loan.
asked by Greg on January 27, 2015 
Geometry
Find the area of the shaded region, if the rectangle has dimensions 8m and 18m and the circle is inscribed in the rectangle. I just need an example on how to solve for this. I'm pretty bad at following without examples and my book doesn't show one.
asked by Anne on July 14, 2016 
Physics
When a shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 5.1 m/s2 as it slows from 9.6 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s
asked by Simone on September 16, 2013 
Calculus
Determine the intersection, if any, of the planes with equations x + y  z + 12 = 0 and 2x + 4y  3z + 8 = 0. I have no clue where to even begin. If someone could help and give me the steps to complete it, that would be greatly appreciated. Do I have to
asked by Ad on December 18, 2014 
Math / Algebra Word Problem
The Parkhursts used 160 yd of fencing to enclose a rectangular corral and to divide it into two parts by a fence parrallel to one of the shorter sides. Find the dimensions of the corral if its area is 1000 yd^2 Thank you!
asked by Ray on December 6, 2007 
Math
I think my teacher might have made a mistake while grading homework. I'd like a second opinion if possible.. Q; The midpoint of line UV is (5,11). The coordinate of one endpoint are U (3,5). Find the coordinates of the endpoint V. My answer was V(7,27)
asked by Yeri on September 26, 2016 
Microeconomics
What does the U.S. government hope to achieve through the use of its antitrust policy? How does international competition affect domestic antirust policy? If could help me find a web site that tells me in simple terms.
asked by Susan on June 5, 2009 
Physics
Given: G = 6.67259 × 10−11 Nm2/kg2 Mimas, a moon of Saturn, has an orbital radius of 1.8 × 108 m and an orbital period of about 22.6 h. Use Newton’s version of Kepler’s third law and these data to find the ma
asked by sharon on December 7, 2009 
Math help ASAP please
A kicker kicks a football during practice. The equation below can be used to find the height (h) in feet after t seconds. h(t)=16t^2+96t After how many seconds will the ball hit the ground? A. 6 B. 7 C. 96 D. 0 My answer is B, is this correct?
asked by xxAnonymousxx on May 10, 2016 
Math
Find the probability of each event. Spinning red on a spinner with equally sized red, blue, yellow, and green sectors, and flipping a coin that lands tails up
asked by John on May 23, 2016 
statistics
Using the average and standard devation for length variable from problem 3,find the probability that the length of 35 movies is less than 120 minutes. Assume the distribution is normally distributed. interpret your result.
asked by kat on February 27, 2013 
math: 689599.7 rule
suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000 use the rule to find the percentage of buyers who paid: between $150,000if the standard deviation is $1200
asked by john on April 30, 2015 
Physics
1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to
asked by Danny on June 6, 2013 
Social Studies
Ancient China irrigation 1. Find out the following information: a. When, where, and why did it develop? b. How was it used or practiced? c. Whom did it affect? d. What was the lasting impact this innovation had on China and its people? e. What are some
asked by Help I need somebody not just anybody on March 12, 2017 
physics
"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)
asked by Allie on April 20, 2012 
physics
The distance between two consecutive nodes of a standing wave is 22 cm. The hand generating the pulses moves up and down through a complete cycle 3.89 times every 4.68 s. Find the velocity of the wave. Answer in units of m/s
asked by d on March 17, 2015 
math/calculus
You are given the four points in the plane A(3,6),B(0,6),C(5,7),D(8/7) . The graph of the function f(x) consists of the three line segments AB ,BC and CD . Find the integral f(x)from 3 to by interpreting the integral in terms of sums and/or differences
asked by Mattie Boren on April 23, 2010 
Calculus
Here's one more that I do not understand A company estimates that the cost ($) of producing x units of a certain product is given by: C= 800 + .04x + .0002x^2 Find the production level that minimizes the average cost per unit. Thank you so much
asked by Jane on March 30, 2009 
ap algebra
Can you please help me with these problems I don't understand them? thanxs! Find the zeros for the polynomial function and give the multiplicity for each zero. State whether the graph crosses the xaxis or touches the xaxis and turns around, at each zero.
asked by Tyra on October 15, 2007 
Biology I
Hi! Hoping someone knows this/has some on hand. Without being combined with anything, what colour is Pb(C2H302)2 (lead acetate)? My lab partners and I forgot to note the original colour. Please help if you can. I googled it, but couldn't find an answer.
asked by Claire on November 10, 2009 
Health
Why are many fad diets considered unhealthy? A. Because they may not provide all of the nutrients your body needs B. Because they often promise quick weight loss C. Because people typically find it difficult to keep lost weight off D. All of the above D?
asked by Brandon on August 21, 2013 
Calc
Im not getting these answers at all, please help. Find a formula for the fourth degree polynomial p(x) whose graph is symmetric about the yaxis (meaning it has no odd powers of x), and which has a yintercept of 0, and global maxima at (4,512) and
asked by Anonymous on April 7, 2013 
physics
In an archery practise an arrow was released from the bow with a velocity 20m/s.it strikes to the board situated 15m ahead and stops.find at what rate the arrow was accelerated?
asked by Tina on August 14, 2014 
Math
Given the following statistical list: 13,17,19,22,25,27,29,29,32,and 33. Assuming a desired "Confidence Level" of 95%, find the confidence interval for the above scores. 19.8 < u(mean)< 29.4 14.6 < u < 33 13.4 < u < 22.7 11.1 < u < 18.5 I have 2 weeks to
asked by Adam on October 2, 2012 
math
It has been found that the average IQ score of students is 115 with a stanard deviation of 6. Find the probability that a random selected student will have an IQ score above 119. Assum the IQ scores are normally distributed.
asked by D. Hearn on May 8, 2013 
English
Would you name facilities or organizations where orphans, elderly people, very young children are cared for? For example, a senior center, a nursing home, etc. Would you let me know the websites where we can find many kinds of such organizations and their
asked by rfvv on August 20, 2013 
calculus
A particle traces the path vector r = (t^3, t+3, t^2 4t) where t represents time; it flies off on a tangent when t=1 and then moves in a straight line with constant speed. Find its position when t=4. Do I just plug the 4 into the t's in vector r?
asked by mark on September 20, 2008 
algebra
Sheila Spinney borrowed $32,500 at 7.5% simple interest for 180 days on January 7. The bank later sold the note at an 8% discount on March 2. Find the proceeds to the bank.
asked by Felicia on August 21, 2012 
college physics
The speed (v) of an ocean wave depends on its wavelength ë (measured in m/s) and the gravitational field strength g (measured in m/s62) according to the formula v = Këˣgʸ where K is a dimensionless constant. Find the value of the exponent x and y.
asked by Mandy on January 19, 2010 
Physics
Find the location of the center of mass for a onedimensional rod of length L and of linear density ë(x) = cx, where c is a constant. (Hint: You will need to calculate the mass in terms of c and L. Use any variable or symbol stated above as necessary.) X
asked by mymi on October 11, 2011 
Physics
A 200kg wagon is pushed along a horizontal surface at a constant 10m/s when it is released. After rolling a distance of 45m the wagon comes to a complete stop. Find the coefficient of friction.
asked by Emma on December 4, 2016 
Physics
A turbine spinning with angular velocity w_0 rad/sec comes to a halt in T seconds. Find an expression for the angle delta theta through which the turbine turns while stopping.
asked by Nami on October 2, 2012 
math
Find the present value, using the present value formula and a calculator. (Round your answer to the nearest cent.) Achieve $225,500 at 8.95% compounded continuously for 8 years, 155 days.
asked by Anonymous on November 16, 2013 
Physics  Gravitational force
Find the gravitational force between earth and the sun. I am using the formula Fg = (G*m1*m2)/(r^2) where G = 6.67*10^11 m1 = 6.0*10^24kg m2 = 2.0*10^30kg r = should i use the sun's radius or the earths (Rearth = 6.38*10^6; Rsun = 6.96*10^8) either way i
asked by Shaila on August 21, 2010 
stats
suppose that the wait time at the bank is uniformly distributed in the interval 4min8min find the probability that a randomly selected customer has to wait longer than 6.5 minutes
asked by zuly on April 29, 2012 
math
find the surface area of the prism. A:426 msquared B:306 m2 C:336 m2 D:213 m2 Note: prism is rectangular or squared and uh height is nine base is 12 and other part is 5m pls help
asked by Yung shuty on May 8, 2017 
AP Physics 1
A 1400 kg car is moving westward with a speed of 12 m/s, and a 3600 kg truck is traveling east with a speed of 27 m/s. Find the velocity of the center of mass of the system. Answer in units of m/sˆ
asked by Anonymous on January 13, 2017 
Math Business
Janet got 671.50 in cash as the proceeds form a loan of $680. The discount rate was 10% simple interest. Find the discount period. I got 118.5 months but am not sure if I did it correctly.
asked by Scott on January 19, 2010 
STATISTICS
A random sample of stock prices per share (in dollars) is shown. Find the 90% confidence interval for the variance and standard deviation for the prices. Assume the variable is normally distributed.
asked by Paula on April 19, 2013 
help maaaaath
Find the largest possible number of distinct integer values {x_1,x_2,…,x_n}, such that for a fixed reducible degree 4 polynomial with integer coefficients, f(x_i) is prime for all i?
asked by lin on June 23, 2013 
mba
the price p per unit at which a company can sell all that it produces is given by the function p(x) = 3004x. the costs function is c(x) = 500+28x where x is the number of units produced. find x so that the profit is maximum
asked by viji on October 22, 2012 
GGIS
A vertical radio mast is supported by wires attached to its top and to points on the level ground 9m from its base. If each wire is 31m long m, find the height of the mast.
asked by damilola on October 17, 2015 
Calculus derivative
Find the slope and an equation of the tangent line to the graph of the function f at the specified point. f(x)=1/3x^2+5x+5: (1, 1/3) Answer: f’(x)=2/3x + 5 y=2/3x 1 I reworked the problem and got f'(x)=5, y=5x+ 14/3 This is from a multiple choice
asked by Steff on June 15, 2011 
mathsperimeter
A Rectangular field 750m long and 450m broad has in the middle of it , road 5m wide running at right angles to each other , one long the length and the other along the breadth . Find the area of the path
asked by anoynomous on March 6, 2013 
social studies
i find the answer for that question which industry is most helped by italy's arable land and good amounts of rainfall the answer is marble and granite mines is it right mrs. sue
asked by veneisha on October 17, 2009 
statistics
For these 90 times the mean was 15.60 minutes and the standard deviation s=1.80 minutes. Find the margin of error (round to 2 decimal places) and the 95% confidence interval for Julia’s average running time.
asked by sue on December 19, 2013 
math calculus
A poster is to contain 300 (cm square) of printed matter with margins 10cm at the top and bottom and 5cm at each side. Find the overall dimensions if the total area of the poster is minimum.
asked by Aquino,Vanessa Mae on October 23, 2016 
math,help
okay the problem states. the price of an item is given by p=2x^2100 Find the polynomial that represents the revenue generated from the sale of x items. So this is what i did so far: First i tried solving for x using the equation. so p+100=2x^2 the rest i
asked by Jasmine20 on January 24, 2007 
Physics
When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 3.6 m/s^2 as it slows from 8.5 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s.
asked by Anonymous on August 25, 2015 
physics
The speed (v) of an ocean wave depends on its wavelength ë (measured in m/s) and the gravitational field strength g (measured in m/s62) according to the formula v = Këˣgʸ where K is a dimensionless constant. Find the value of the exponent x and y.
asked by Mandy on January 19, 2010 
Finance
A company issues a 6year bond with a face value of 5,000 and semiannual coupons payments of $275. Find the yield rate if the price of the bond is 6,500.
asked by Kim on November 28, 2010 
Math
1. The set of ordered pairs of the form (x,y) shown below represents points on a graph for a direct variation. (−4,6) (−1,−1.5) (0,0) (2,3) (6,9) Which equation best represents the relationship? A. y=3/2x B. y=2/3x C. y=x2 D. y=x+3 Should I just
asked by Tia on February 3, 2015 
Calculus
You are given the four points in the plane A=(7,4) ,B=(9,3) ,C=(13,5) , and D=(16,2 . The graph of the function consists of the three line segmentsAB ,BC and CD . Find the integral between x= 16 and x= 7 by interpreting the integral in terms of sums
asked by Bobby on November 28, 2009 
Physics Verification
A poorly tuned Prius can accelerate from rest to a speed of 28 m/s in 20s. a) what is the average acceleration of the car? my answer is 1.4 b) Find its displacement in this time. my answer = 280 Can anyone verify this please?
asked by Alexander on October 26, 2013 
geography
I`m glad to know i`m not the only one having trouble with the airbus geography homework report. It is hard to find the info you need to answer the questions. The one i`m stuck on is how the broughton site helps the airbus industry.
asked by adam on May 22, 2008 
statistics
The weights of a group of adult males are normally distributed with a mean of 180lb and standard deviation of 8lb. Find the probability that a randomly chosen male from this group weighs more than 190lb.
asked by tiffany on June 10, 2012 
Oceanography
If the chlorinity of a sample of seawater is 5.5 0/00, what is the salinity in parts per thousand? Round your answer to the nearest tenths place. Basically, if ANYONE...knows anything about how to do this, or knows the answer or any information that could
asked by Melanie on September 24, 2008 
Biology  Genetics
I have not been able to find any more in depth websites/answers for this question. DNA is considered to be a relatively stable molecule. What is it that gives the molecule its stability when the hydrogen bonds between the nitrogen bases are so easily
asked by Meki on October 31, 2007 
Accounting
How does one determine variance analysis? I am trying to understand this and my text book is confusing me. Also, to determine this, would one find the the answers in the balance sheet or cash flow statement, or from the revenue and expenses?
asked by Barbie on April 30, 2010 
math
a rectangular lawn 80*60m has two roads each 10m wide running in the middle of it,one parallel to the length and the other parallel to the breadth.find the cost of graveling them at ₹1.20 per square metre
asked by Anonymous on December 14, 2017 
Physic
A spherical concave mirroe has a radius =0.4m forms an image of a 0.2 m high object located 1m from the vertex of mirror. find the position and height of the image. ? please explain your solution
asked by mac on December 12, 2010
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