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Erica

Questions (404)

large dose of vitamin C are supposed to cure the common cold. One commercial over-the-counter product consists of 500-mg tablets
1. 3 answers
2. 3,211 views
Discuss why England's North American colonial empire had outstripped those of her European rivals by the end of the seventeenth
1. 1 answer
2. 570 views
Assume that P(A) = 0.4, P(B) = 0.4, and P(A∪B) = 0.7. Find P(A∩B) and P(A complement ∩ B complement).
1. 1 answer
2. 531 views
In the game of poker, determine the number of ways a straight (five cards with consecutive values, such as A 2 3 4 5 or 7 8 9 10
1. 0 answers
2. 350 views
Twelve children are divided up into three groups, of five, four, and three children, respectively. In how many ways can this be
1. 2 answers
2. 734 views
Automated chemical synthesis of DNA has made it possible to custom-order moderate length DNA sequences from commercial
1. 1 answer
2. 593 views
From 1990 to 1994, the mail order sales ofhealth products in the United States can be modeled by S = 10t 3 + 115t 2 + 25t + 2505
1. 1 answer
2. 761 views
Find the value of c that makes the expression a perfect square trinomial. Then write the expression as the square of a binomial.
1. 1 answer
2. 1,839 views
Describe in words the set of all points in R³ that satisfy the following expressions:a) z=0 b) z≥0 c) y≤0
1. 1 answer
2. 388 views
Solve:du/dt = (sin t) / (u^2 + 1) So far I got: arctan u = -ln |csc t + cot t| + C I'm not sure where to go from there. Thank
1. 1 answer
2. 383 views
How do you take the integral of dy/(y^2 + 4)?
1. 1 answer
2. 427 views
What is the limit as t→∞ of L(t)?L(t) = 34 - 32e^(-0.0719t) Thank you so much!
1. 1 answer
2. 413 views
Suppose that you follow the size of a population over time. When you plot the size of the population versus time on a semilog
1. 2 answers
2. 2,057 views
Find the integral from -∞ to -1 of 1/(1+x²) dx.I started working the problem out, and so far I got the lim as z→-∞ of
1. 1 answer
2. 571 views
How do you solve the integral from 0 to 1 of x arctan x dx?
1. 1 answer
2. 404 views
How do you integrate 3∫(1)/(x²+1)² dx ?Thank you!
1. 1 answer
2. 443 views
Use substitution to evaluate the indefinite integral:The integral of [ (sq. root (1 + ln x)) ((ln x)/x) dx] Im confused on what
1. 1 answer
2. 1,072 views
Evaluate the indefinite integral:∫ from 1 to 2 of ln (x²e^x) dx Thank you for your help!!
1. 2 answers
2. 425 views
Use either substitution or integration by parts to evaluate the integral:∫(x+2)/(x²+2) dx Thank you!!
1. 1 answer
2. 545 views
First make an appropriate substitution and then use integration by parts to evaluate the indefinite integrals:∫ sinx cos³x
1. 1 answer
2. 611 views
Use integration by parts to evaluate the integral.∫ from 1 to 4 of (√x) (ln√x) dx Im not really sure what to choose for u
1. 1 answer
2. 488 views
F(x) = cos(x) • the integral from 2 to x² + 1 ofe^(u² +5)du Find F'(x). When i did this, i got: -2xsin(x)e^((x²+1)² + 5)
1. 1 answer
2. 634 views
The production process of computer parts uses two machines one old & one new. If the old machine is used the probability that
1. 1 answer
2. 860 views
A particle moves along the x-axis with velocityv(t) = -(t-3)² + 5 for [0,6]. a) Find the average velocity of this particle
1. 3 answers
2. 626 views
Recall that the acceleration a(t) of a particle moving along a straight line is the instantaneous rate of change of the velocity
1. 1 answer
2. 625 views
Find the areas of the regions bounded by the lines and curves by expressing x as a function of y and integrating with respect to
1. 2 answers
2. 637 views
Calculate the amount (in moles) of H₂O in 2.00g of Na₂CO₃ ⋅ 10H₂O.Thanks so much!!
1. 1 answer
2. 765 views
The field of nanotechnology offers some intriguing possibilities, such as the creation of fibers one atom wide. Suppose you were
1. 3 answers
2. 1,856 views
Calculate the amount (in moles) of Cu²+ ions in 3.00g of CuBr₂.Thank you so much for the help!!
1. 1 answer
2. 499 views
Epsom salts consist of magnesium sulfate heptahydrate. Write its formula.a) How many atoms of oxygen are in 5.15g of Epsom
1. 2 answers
2. 2,619 views
if a car can accelerate at 6m/s2, how fast can it accelerate if it is towin an identical car behind it?
1. 1 answer
2. 467 views
Assume that a>0. Evaluate the integral from 0 to a of x dx by approximating the region bounded by y=x and the x-axis from 0 to a
1. 0 answers
2. 446 views
Hi I have a speech to present and my professor gave me the outline on how to prepare it but I'm having a hard time setting it
1. 6 answers
2. 538 views
Journalize the following transactions-Received cash from investment made by owner,$15000. Received cach providing accounting
1. 0 answers
2. 600 views
I need to write a 700 word essay on what my name means. Can I please get some help!!!
1. 1 answer
2. 475 views
I have to write a 700 word essay on what my name means ????????????? And I need help!!!!
1. 3 answers
2. 658 views
What is the pressure at the bottom of a tube of mercury that is 0.2 m deep?An elephant with a mass of 1000 kg stands on a circus
1. 0 answers
2. 655 views
When the following are placed in water, for which of them will the buoyant force be more than as its weight?A) an ice cube B) a
1. 1 answer
2. 519 views
When the following are placed in water, for which of them will the buoyant force be more than as its weight?A) an ice cube B) a
1. 0 answers
2. 473 views
A satellite orbiting at an elevation of 3200 km does whata) Stays beyond the earth's gravity, which is why it stays up there. B)
1. 2 answers
2. 860 views
5(2n + 4) - 3(4n - 6) = 2(20 - n)I solved this equation and this is what I got. 10n + 20 - 12n + 18 = 40 - 2n -2n + 38 = 40 -2n
1. 2 answers
2. 796 views
A mixture of gases at 760.0 torr contains 35.0% nitrogen, 22.0% oxygen , and 43.0% carbon dioxide by volume. What is the
1. 1 answer
2. 904 views
The Greek base HELI- means?
1. 2 answers
2. 617 views
Simplify: a^4-b^4/a-b
1. 1 answer
2. 326 views
Simplify: (3c^2)(-6cd)^-2
1. 1 answer
2. 305 views
the wealth that enabled the Italian city-states to lead in the development of Renaissance arts was derived mainly from?a)the
1. 13 answers
2. 3,341 views
A company with a large fleet of cars found that the emissions systems of 18 out of the 65 randomly selected cars they tested
1. 2 answers
2. 1,668 views
To what limit does the sequence Sn = (3+n) /3^n converge as n approaches infinity?
1. 0 answers
2. 546 views
How do you know what shape the graph in the xy-plane represented by x=3sin(t) and y=2cos(t) is?
1. 3 answers
2. 738 views
The rate that an object cools is directly proportional to the difference between its temperature ( in Kelvins) at that time and
1. 1 answer
2. 1,354 views
A particle moves along a path described by x=cos³t and y=sin³t. The distance that the particle travels along the path from t=0
1. 2 answers
2. 1,278 views
If f(x)= (3x)^(3x), then f'(x) = ?Thank you!
1. 1 answer
2. 330 views
What is the volume of the solid generated by rotating about the y-axis the region enclosed by y=sinx and the x-axis, from x=0 to
1. 1 answer
2. 1,210 views
If a particle moves in the xy-plane so that at time t>0 its position vector is (e^(t²), e^(-t³)), then its velocity vector at
1. 2 answers
2. 2,050 views
Find the integral from 1 to 0 of arcsin(x)dxThank you!
1. 1 answer
2. 431 views
Use differentials to approximate the change in the volume of a cube when the side is decreased from 8 to 7.99 cm. (in cm^3)Thank
1. 1 answer
2. 4,535 views
Use differentials to approximate the change in the volume of a cube when the side is decreased from 8 to 7.99 cm. (in cm^3)Thank
1. 1 answer
2. 815 views
What is the limit as x approaches infinity of 4xsin(1/x)?Can you also show me how you get the answer? Thank you so much!!
1. 1 answer
2. 993 views
a description of a specific macroeconomic phenomenon or event and how it has impacted you
1. 1 answer
2. 871 views
Christopher Columbus' treatment of Native Americans can BEST be described as friendly, peaceful but not friendly, violent&
1. 1 answer
2. 453 views
What is the percentage of potassium chloride to oxygen?
1. 1 answer
2. 366 views
What is the percentage of potassium chloride to oxygen?
1. 1 answer
2. 447 views
I have to find the integral of 1/(sq. rt. of (4x-x²)) dx. I know I have to complete the square of the denominator, but im
1. 1 answer
2. 592 views
The line y = mx+b with b≥2 is tangent to the graph f(x) = -2(x-2)² + 2 at a point in the first quadrant. What are all
1. 0 answers
2. 813 views
If dy/dt = 2y/(t(t+2)) for t>0 and y = 1 when t = 1, then when t = 2, y = ?
1. 0 answers
2. 240 views
A rectangle is to be inscribed in a semicircle of radius 8, with one side lying on the diameter of the circle. What is the
1. 1 answer
2. 1,629 views
If dy/dx = xy - y^2 and y(1) = 3, then y (2) = ?
1. 0 answers
2. 360 views
If n is a positive integer, find the limit as n approaches +∞ of 1/n(sin (π/n) + sin (2π)/n + ... + sin (nπ)/n)
1. 0 answers
2. 632 views
Let f(x) = x^3 - 7x^2 + 25x - 39 and let g be the inverse function of f. What is the value of g'(0)?
1. 1 answer
2. 961 views
If the substitution u=x^2 + 1 is made, then the integral from 0 to 2 of [(x^3)/(x^2 + 1)]dx = ?Thank you for your help!
1. 0 answers
2. 443 views
Find the indefinite integral.Integral of [1/(4+3x²)]dx Thank you so much for your help!
1. 1 answer
2. 396 views
Find the indefinite integral.Integral of (2x)/(x-4)dx Thank you so much!
1. 1 answer
2. 355 views
Find the indefinite integral.Integral of (x+1)/(√(x²+2x-4))dx Thank you for your help!
1. 1 answer
2. 364 views
What is the antiderivative of dy/dx = x/(x^2 + 1)?
1. 1 answer
2. 392 views
The base of a solid is a circle of radius a, and its vertical cross sections are equilateral triangles. The volume of the solid
1. 1 answer
2. 1,340 views
Is predator-prey the most important ecological relationship? Thanks everyone!
1. 0 answers
2. 409 views
On one of my tests they are asking me if Symboin pandora has a symbotic reletionshio with the Norway Lobster. In my lesson the
1. 3 answers
2. 1,244 views
Set up and evaluate the definite integral for the area of the surface generated by revolving the curve about the y-axis.y = cube
1. 2 answers
2. 881 views
Set up and evaluate the definite integral for the area of the surface generated by revolving the curve about the x-axis.y =
1. 2 answers
2. 2,149 views
Find the arc length of the graph of the function over the indicated interval.y = (x⁵/10) - (1/(6x³)) , [1,20] Thank you so
1. 0 answers
2. 566 views
What is the area bounded by the graphs of y = 4x - x² and y = x?Thank you!!
1. 1 answer
2. 485 views
What is the area of the region located between the graphs of y = -x² + x + 4 and y = 2?Thank you so much!
1. 1 answer
2. 609 views
How do you integrate sin²x?
1. 1 answer
2. 1,199 views
Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis.y = sin
1. 1 answer
2. 499 views
The slope of a curve at each point (x,y) is given by 4x - 1. Which of the following is an equation for this curve if it passes
1. 0 answers
2. 1,189 views
Given function f defined by f(x) = ( 1- x)³. What are all values of c, in the closed interval [0,3], that satisfy the
1. 2 answers
2. 2,524 views
A rectangular box, with a square base and open at the top is to be constructed. If the volume of the box needs to be 108 cubic
1. 1 answer
2. 1,865 views
Various values for the derivative, f'(x), of a differentiable function f are shown below.x=1, f'(x) = 8 x=2, f'(x) = 4 x=3,
1. 1 answer
2. 902 views
y = x^2y = 6 - x Find the area of the region by integrating (a) with respect to x and (b) with respect to y.
1. 0 answers
2. 434 views
y = x^2y = 6 - x Find the area of the region by integrating (a) with respect to x and (b) with respect to y.
1. 0 answers
2. 547 views
If y = (cos²x)/(1 + sin x), then dy/dx = ?
1. 0 answers
2. 482 views
If y = (sec x)/(tanx), then dy/dx = ?
1. 0 answers
2. 305 views
Limit as x approaches +∞ of x sin (1/x)
1. 0 answers
2. 366 views
Find the limit as x approaches 0 of (sin x)/(x + tan x)
1. 0 answers
2. 475 views
Find the limit as h approaches 0 of sin²(3x+3h) - sin²(3x) / h
1. 0 answers
2. 431 views
Find the limit as x approaches π of (cos x +1)/(x-π)
1. 0 answers
2. 341 views
Urine passes from the bladder to the outside of the body through a tube called the .UrethraMuscles are attached to bones by
1. 1 answer
2. 856 views
Movement of bones in the skeletal system is made easier because of the existence of connections between bones called. JOINTOrgan
1. 1 answer
2. 666 views
You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it reaches a maximum height H.
1. 5 answers
2. 7,247 views
You push a 67 kg box across a floor where the coefficient of kinetic friction is uk = .55. The force you exert is horizontal.
1. 6 answers
2. 5,086 views

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