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Robin

Questions and answers by Robin, page 2

Questions (239)

Cite five reasons that Americans should trust the government?
1. 2 answers
2. 845 views
Three forces act on a moving object. One force has a magnitude of 61.9 N and is directed due north. Another has a magnitude of
1. 2 answers
2. 825 views
What is the difference between a complex, compound, and compound-complex sentence?
1. 1 answer
2. 368 views
possessive form of family, brother, suitcase, child, government, pen, train, tree, woman, refugg, families, brothers, suitcases,
1. 3 answers
2. 1,081 views
1. Slaves lives were terribly hard.2. They wre at the mercy of owners whims. 3. A runawy life was in danger. 4. Often runaways
1. 3 answers
2. 332 views
Andrea sells tickets at the Showtime Cinema. On Thursday night, Back to the Future was playing. Adults, senior citizens and
1. 1 answer
2. 489 views
You are asked to prepare a temperature bath that freezes at -25 degrees C, using only water and ammonium sulfate.a. How many
1. 2 answers
2. 717 views
There is also a graph i can't move it.Building Isochrons and Determining the Ages of Three Rocks Page 15 of 17 For each of the
1. 2 answers
2. 1,041 views
Rearrange this expression into quadratic form, ax2 bx c = 00.20= ((x^2)/(55-x)) where a = 1, and identify the values of b and c.
1. 4 answers
2. 2,501 views
two solutions are prepared using the same solutesolution a: 0.27g of the solute disolves in 27.4g of t-butanol solution b: 0.23g
1. 3 answers
2. 2,696 views
two solutions are prepared using the same solutesolution a: 0.27g of the solute disolves in 27.4g of t-butanol solution b: 0.23g
1. 2 answers
2. 1,295 views
Hydrosphere basic facts and what makes up the hydrosphere?
1. 1 answer
2. 344 views
true false The speed of a particle is always positive.True False The average speed of a particle is equal to the magnitude of
1. 2 answers
2. 1,174 views
I am working on quadratic equations and I have worked a problem down to 3 plus or minus the square root of 361 all over 2...
1. 3 answers
2. 396 views
x^2-4x+32=0.would the final answer be 2 +or- 2 sqrt7 ?
1. 5 answers
2. 264 views
A 2kg block is on a level table and held against a spring with k =150N/m which has been compressed 15 cm. he block is released
1. 1 answer
2. 416 views
if no preliminary sample is taken to estimate p, how large a sample is necessary to be 87% sure that the point estimate will be
1. 1 answer
2. 379 views
The reaction of chlorine gas with solid phosphorus (P4) produces solid phosphorus pentachloride. When 63.5 g chlorine reacts
1. 3 answers
2. 993 views
A roller coaster has a mass of 425 kg. It sits at the top of a hill with height 66 m. If it drops from this hill, how fast is it
1. 5 answers
2. 1,291 views
If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, its height in feet after t seconds is given by
1. 4 answers
2. 751 views
Let f(x)=−4−3x+2x^2. Use the limit definition of the derivative to find find f�Œ(a)
1. 1 answer
2. 376 views
Find an equation for the tangent line of the function y=x+(4/x) at the point (2, 4).The equation of the tangent line is . You
1. 1 answer
2. 410 views
Find an equation for the tangent line of the function f(x)=6+10xe^x at the point (0,6).
1. 1 answer
2. 345 views
Find the values of a , b , and c in the quadratic function p(x)=ax^2+bx+c such that p(2)=6, p�Œ(2)=2, and p�Œ�Œ(2)=3.
1. 1 answer
2. 380 views
Find the values of a , b , and c in the quadratic function p(x)=ax2+bx+c such that p(2)=6, p'(2)=2, p"(2)=3
1. 2 answers
2. 682 views
Find the values of a ,b, and c in the quadratic function p(x)=ax^2+bx+c such that p(2)=6, p'2)=2, and p''(2)=3.a = b = c =
1. 1 answer
2. 323 views
Sketch a graph of the parabola y=x^2+3. On the same graph, plot the point (0,−6). Note there are two tangent lines of y=x2+3
1. 3 answers
2. 676 views
Find the equation of the tangent line to the curve y=2tan(x) at the point (pi/4,2).
1. 2 answers
2. 779 views
For what values of x with 0¡Üx¡Ü2¦Ð does the graph of f(x)=x+4sin(x) have a horizontal tangent?
1. 1 answer
2. 429 views
Find the outside and inside functions of the following to find their derivatives:1) sqrt(2x+9) 2) cos(cos(x)) 3) tan(x) I
1. 2 answers
2. 552 views
The motion of a spring that is subject to dampening (such as a car's shock absorber)is often modeled by the product of an
1. 2 answers
2. 735 views
How would you do this problem.What is the growth rate of the stock with a $3.00 expected dividend and a $20.60 price with
1. 1 answer
2. 348 views
Let y=e^(x/9).a) Find the differential dy. dy = b) Evaluate dy if x=0 and dx=−0.03. dy =
1. 1 answer
2. 356 views
A television camera is positioned 2500 ft from the base of a rocket launching pad. The angle of elevation of the camera has to
1. 1 answer
2. 637 views
Two cars start moving from the same point. One travels south at 60 mph and the other travels west at 25 mph. At what rate is the
1. 3 answers
2. 2,362 views
A television camera is positioned 2500 ft from the base of a rocket launching pad. The angle of elevation of the camera has to
1. 2 answers
2. 983 views
The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also the mechanism
1. 5 answers
2. 702 views
Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. It forms a pile in the shape of a right
1. 4 answers
2. 5,169 views
Find the absolute maximum and the absolute minimum values off(x)=x−7cos(x) on the interval [−ð,ð).
1. 2 answers
2. 640 views
A particle moves with a fixed acceleration 3 m/s^2. If its initial velocity is s(0)=0:a) Find its velocity function. b) How long
1. 1 answer
2. 478 views
Find the point on the line 7x+5y−2=0 which is closest to the point (−6,−2).
1. 3 answers
2. 2,023 views
A rancher wants to make a rectangular pen to house her animals. She will divide it up with 3 fences down the middle parallel to
1. 4 answers
2. 2,569 views
Find the point on the line 7x+5y−2=0 which is closest to the point (−6,−2).
1. 2 answers
2. 521 views
Consider the functionf(x)=(8)/(x^2)−(8)/(x^5) . Let F(x) be the antiderivative of f(x) with F(1)=0. Then F(2) equals ?
1. 1 answer
2. 420 views
For the function f described by the following table, estimate �ç40 0 f(x)dx using the following. Enter each answer as a sum to
1. 2 answers
2. 1,182 views
Evaluate the integral below by interpreting it in terms of areas. In other words, draw a picture of the region the integral
1. 1 answer
2. 810 views
Tribke Enterprises collected the following data from its financial reports for 2012.........
1. 1 answer
2. 355 views
Approximately 1 out of every 4 tax returns contains some type of error. Maria has 260 tax return that she must review how many
1. 2 answers
2. 494 views
The position vector for a proton is initially r(with vector sign above it) =5.0i(with top)- 6.0j(with top) + 2.0k(with top) and
1. 2 answers
2. 1,019 views
Snow is falling vertically at a constant rate of 8.0 m/s. At what angle from the vertical do the snowflakes appear to be falling
1. 1 answer
2. 485 views
Evaluate the integral (3x^2-16x-19)/(x^3-4x^2-3x+18)
1. 6 answers
2. 848 views
What is the square root of 693 divided by the sum of pi and Avagadro's number
1. 1 answer
2. 346 views
A cable hangs between two poles of equal height and 40 feet apart.At a point on the ground directly under the cable and x feet
1. 4 answers
2. 3,314 views
Determine whether the integral is divergent or convergent. If it is convergent, evaluate it. If it diverges to infinity, state
1. 2 answers
2. 1,073 views
A hawk flying at 25 m/s at an altitude of 150 m accidentally drops its prey. The parabolic trajectory of the falling prey is
1. 2 answers
2. 551 views
x=7t−t^2,y=4t^(3/2)from the point (0,0) to the point (12,32), you'd have to compute �integral b to a f(t)dt where a= b= f(t)
1. 1 answer
2. 277 views
A) Find the average value off(x)=x^3-x+1 on the interval (0,2) B) Find c so that f(c)equals the average value
1. 1 answer
2. 343 views
According to the National Health Survey, the heights of adult males in the United States are normally distributed with mean 69.0
1. 4 answers
2. 2,006 views
Boxes are labeled as containing 500g of cereal. The machine filling the boxes produce weights that are normally distributed with
1. 2 answers
2. 1,268 views
Massless ropes A, B, C are connected together as shown and support a mass of 100 kg. Rope A is horizontal and ties to the wall,
1. 1 answer
2. 487 views
A machine swings a mass of 1kg connected to a massless rope in a vertical circle so that the speed of them mass is constant at 8
1. 2 answers
2. 579 views
Find the particular solution of the differential equationparticular solution of the differential equation
1. 1 answer
2. 434 views
Solve the seperable differential equation 8yy�Œ =x. Use the following initial condition: y(8)=4.Express x^2 in terms of y.
1. 3 answers
2. 796 views
Determine whether the sequence is divergent or convergent.a(sub n)=(−1)^n(sin(2/n))
1. 1 answer
2. 379 views
Determine whether the sequence is divergent or convergent.If it is convergent, evaluate its limit. A (sub n)=((4n-7)/(4n+9))
1. 1 answer
2. 381 views
Solve the separable differential equation 10x−6ysqrt(x^2+1)dy/dx=0. with the initial condition y(0)=4.
1. 3 answers
2. 1,947 views
Calculate 20 terms for the sequence P0=-.5 and k=1.8, P0=.5 and k=2.8, and P0=.3 and k=1.8. Does the limit depend on the choice
1. 1 answer
2. 325 views
How can I get partial sums of a series on a TI 89 calculator?
1. 1 answer
2. 432 views
A severe thunderstorm dumped 2.4 in of rain in 30 min on a town of area 35 km^2. What mass of water (in kg) fell on the town?
1. 1 answer
2. 645 views
Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide,
1. 1 answer
2. 630 views
A particle starts from the origin at t = 0 and moves along the positive x axis. A graph of the velocity of the particle as a
1. 4 answers
2. 2,151 views
Two trains, each having a speed of s, are headed at each other on the same straight track. A bird that can fly at speed 2s flies
1. 2 answers
2. 1,080 views
Oasis B is a distance d = 7.0 km east of oasis A, along the x axis shown in the figure. A confused camel, intending to walk
1. 4 answers
2. 5,348 views
In the sum A+B=C, vector A has a magnitude of 10.2 m and is angled 48.0° counterclockwise from the +x direction, and vector C
1. 3 answers
2. 1,037 views
A vector with a magnitude of 17.6 m is directed at angle θ = 43o counterclockwise from the +x axis. What are the components (a)
1. 2 answers
2. 805 views
For the vectors with a = 3.3 and b = 2.2, what are (a) the z component of AxB, (b) the z component of AxC, and (c) the z
1. 2 answers
2. 572 views
Three vectors are given by a= 0i+0j+4.0k , b= 3.0i+ -3.0j+-1.0k and c=1.0i+2.0j+-1.0k. Find (a) a(bxc) and (b)a(b+c)
1. 3 answers
2. 554 views
A plane flies 407 km east from city A to city B in 44.0 min and then 871 km south from city B to city C in 1.90 h. For the total
1. 2 answers
2. 544 views
A train at a constant 41.0 km/h moves east for 28 min, then in a direction 53.0° east of due north for 15.0 min, and then west
1. 2 answers
2. 542 views
a vector with a magnitude of 17.6 m is directed at angle θ = 43o counterclockwise from the +x axis. What are the components (a)
1. 1 answer
2. 468 views
Some insects can walk below a thin rod (such as a twig) by hanging from it. Suppose that such an insect has mass m and hangs
1. 4 answers
2. 3,709 views
If on the opening day of business, you put in supplies worth $250 and $3000 cash, would that be considered a transaction OR
1. 1 answer
2. 496 views
Three vectors are given by:a=0i+oj+4.0k b=3.0i+-3.0j+-1.0k c=1.0i+2.0j+-1.0k a) Find a(bxc) b) Find a(b+c)
1. 2 answers
2. 507 views
The force on a particle is directed along an x axis and given by F = 1.7(x/2.8 - 0.95) where x is in meters and F is in Newtons.
1. 1 answer
2. 583 views
A single force acts on a 1.1 kg particle-like object in such a way that the position of the object as a function of time is
1. 2 answers
2. 909 views
Prepare a one-page description of your plans to solve the problem for one of the following research studies. Use the following
1. 3 answers
2. 446 views
solve arithmetically and algebraically.The perimeter of a rectangle is 54 cm. Its length is 6 cm. What is its width?
1. 2 answers
2. 899 views
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to
1. 2 answers
2. 564 views
A reaction: A(aq)+B(aq)<-->C(aq)has a standard free-energy change of –4.69 kJ/mol at 25 °C. What are the concentrations of A,
1. 4 answers
2. 615 views
At a tournament, 2 different games went on for a total of 93 mins. If 1 game took 13 mins longer than the other, how long did it
1. 5 answers
2. 358 views
Of the coins in Tricia's bank, 5/7 are quarters. If Tricia has 95 quarters in her bank, how many coins does she have in all.Is
1. 3 answers
2. 414 views
I have 23 hundreds, 47 tens, 5 ones, 8 tenths and 10 hundredths. What number am I. We got the numbers to the left of the decimal
1. 7 answers
2. 1,712 views
Can't get started on this for my granddaughter:Grace had 3 times as many berries as Tyler. After Grace eats 50 berries she has
1. 5 answers
2. 561 views
Water that aids digestion is really true.Identify the function of the noun clause.
1. 4 answers
2. 1,359 views
What would an example of a logarithmic function that contains two trig functions within it where you would need to use chain
1. 1 answer
2. 637 views
What would an example of a logarithmic function that contains a radical within it and a quotient within it where you would need
1. 2 answers
2. 656 views
the actual volume of a ligquid is 24.5 mL. which of the sets of data indicates both accuracy and precison?
1. 1 answer
2. 376 views
how do you simplify 3j cubed - 51j squared + 210j? I have the answer as j(j(3j-51)= 210 or is it 3j ((j squared -17j + 70)?
1. 3 answers
2. 517 views
Titration of Na2CO3 with HCl. (pKa1(H2CO3) = 6.352, pKa2(H2CO3) = 10.329) . Calculate the pH at each of the following volumes of
1. 3 answers
2. 1,639 views
how do you simplify (sqrt18)over(sqrt8)-3? And (4-3sqrt2)squared? I tried but get some unreal answer. thanks in advance.
1. 1 answer
2. 460 views

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