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Questions (266)

Hydroxylapatite, Ca10(PO4)6(OH)2, has a solubility constant of Ksp = 2.34 × 10^-59. Solid hydroxylapatite is dissolved in water
1. 0 answers
2. 755 views
How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence
1. 0 answers
2. 478 views
How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence
1. 1 answer
2. 486 views
When titrating a weak base with a strong acid, what effect will washing the tip of the burette and sides of the beaker with
1. 0 answers
2. 402 views
When titrating a weak base with a strong acid, what effect will washing the tip of the burette and sides of the beaker with
1. 0 answers
2. 396 views
Implicit differentiation of 5x^2-2xy+7^y
1. 4 answers
2. 583 views
A child's toy consists of a toy car of mass 0.100kg which is able to roll without friction on the loop-the-loop track shown. The
1. 0 answers
2. 1,192 views
what is the pOH of a 0.12 M solution of pyridine (Kb=1.4x10^-9) at 25 Celsius
1. 1 answer
2. 678 views
What is the hydronium ion concentration in a 0.010M solution of carbonic acid, H2CO3? For carbonic acid, Ka1=4.2x10^-7 and
1. 4 answers
2. 1,137 views
in a 0.40 M solution of diprotic acid H2A(Ka=7.4x10^-5, Ka2=5.0x10^-10 at 25 celsius), what is the equilibrium concentration of
1. 3 answers
2. 566 views
The majority of galaxies (by number) are:lenticulars barred spirals dwarfs giant ellipticals
1. 3 answers
2. 391 views
What explains the observation that galaxy clustering is stronger at higher redshifts, which is an apparent reversal of the trend
1. 1 answer
2. 472 views
Which of these is the correct relationship between b, the bias factor, the fluctuations in mass (Δρ/ρ)mass and the
1. 2 answers
2. 477 views
What can we say about the future evolution of irregular clusters?They will become less centrally concentrated and assume a
1. 1 answer
2. 1,036 views
magine you look through a really strong telescope and see a rich cluster. Your telescope is so good that you can see a single
1. 1 answer
2. 608 views
Which of the following is evidence that the evolution of disk galaxies can be greatly affected by their large scale environment?
1. 7 answers
2. 630 views
The Hubble sequence is useful for distinguishing galaxies on the basis of many properties. Which of these does not correlate
1. 1 answer
2. 435 views
Which type of emission closely traces the star-forming regions of a galaxy?none of these coronal X-ray emission 21 cm emission
1. 3 answers
2. 627 views
Which of the following statements is not true of spiral arms:they tend to trail the rotation of the galaxy they are sites of
1. 2 answers
2. 687 views
line segment ab is the diameter of circle O whose center has coordinates (6,8) . what are the coordinates of point b if the
1. 0 answers
2. 813 views
line segment ab is the diameter of circle O whose center has coordinates (6,8) . what are the coordinates of point b if the
1. 6 answers
2. 4,811 views
Shown below is a schematic representation of the water-ethanol phase diagram.Making reference to the phase diagram, explain in a
1. 0 answers
2. 594 views
Last one I need help on:The measure of one angle is 38 degrees less than the measure of its supplement. Find the measure of each
1. 1 answer
2. 5,512 views
Last one I need help on:The measure of one angle is 38 degrees less than the measure of its supplement. Find the measure of each
1. 1 answer
2. 440 views
Two angles form a linear pair. The measure of one angle is 8 times the measure of the other angle. Find the measure of each
1. 3 answers
2. 5,473 views
The measure of one angle is three times the measure of its complement. Find the measure of each angle.
1. 4 answers
2. 4,244 views
What makes #Ag2S+2Al(s)=Al2S3+6Ag(s) ?
1. 2 answers
2. 659 views
Describing CPT Catergories Check Point
1. 1 answer
2. 496 views
Steel expands 11 parts in a million for each 1 degree C change. Consider a 40,000 km steel pipe that forms a ring to fit snugly
1. 0 answers
2. 594 views
The weight of the atmosphere above 1 m^2 of Earth's surface is about 100,000 N. Density, of course, becomes less with altitude.
1. 1 answer
2. 6,672 views
Estimate the buoyant force that air exerts on you. (To do this, you can estimate your volume by knowing your weight and by
1. 3 answers
2. 6,070 views
COMPARINGUNIT RATES
1. 1 answer
2. 779 views
Lauren is pulling on a trunk with a 15-N force. Wayne pulls at right angles to Lauren. With how much force must Wayne pull to
1. 1 answer
2. 1,221 views
Determine whether or not each of the following functions is invertible. Give your reasons for believing the function is
1. 1 answer
2. 1,005 views
Determine whether or not each of the following functions is invertible. Give your reasons for believing the function is
1. 1 answer
2. 730 views
The charged plates of a parallel plate capacitor each have a charge density of 3 x 10-3 C/m2. What is the electric field E
1. 0 answers
2. 503 views
A box of mass m which carries a charge Q slides down a frictionless inclined plane that makes an angle, theta, with the
1. 0 answers
2. 435 views
How can equations and inequalities help a business maximize profit or minimize cost?
1. 0 answers
2. 420 views
find linear approximations for each of the following and put a bound on the error of the estimate.1. (7.985)^1/3 using
1. 1 answer
2. 424 views
find linear approximations for each of the following and put a bound on the error of the estimate.1. (7.985)^1/3 using
1. 2 answers
2. 680 views
My teacher has asked our class to each do a 2 minute light and sound show using four different concepts... Any ideas?
1. 0 answers
2. 392 views
When you are solving for the point of intersection between planes do you follow the same steps when solve for the point of
1. 0 answers
2. 920 views
Complete the system for the given number of solutions:x+y=7 2x+2y = ? infinite number of solutions
1. 1 answer
2. 387 views
Utilization of amylase producers is “big business” can you find or think of any uses for the amylase production? [think of
1. 0 answers
2. 442 views
The pronghorn antelope has been observed to travel at an average speed of more than 55 km/hover a distance of 6.0 km. Suppose
1. 1 answer
2. 744 views
ab=3x, bc=5x, ac=8 what is x and bc?
1. 1 answer
2. 418 views
Ephedrine, which is used as a bronchodilator,has the chemical formula C10H15NO. What mass of H2O would be produced during a
1. 2 answers
2. 1,572 views
Is this equation true or false? Why? �ãa+�ãb=�ãa+bOkay radicals are killing me. Please explain this to me
1. 3 answers
2. 490 views
Is this equation true or false? Why? 20-4�ã2=16�ã2With like radicands should I add the 4 to the other side of the equation?
1. 1 answer
2. 465 views
Write the word or phrase that best completes each statement or answers the question. Provide an appropriate response. The two
1. 1 answer
2. 858 views
z=u(v+w)^(1/2) find ∂^3z/(∂u∂v∂w)what partial derivative am I suppose to be finding exactly? Do I take the derivative of
1. 0 answers
2. 600 views
While training for a race, a runner increases her distance by 10% each day. If she runs 2km on the first day, what will her
1. 2 answers
2. 1,284 views
Determine whether the given conditions are sufficient to prove that ∆PQR ∆MNO.Justify your answers. PQ≅MN,PR≅MO,QR≅NOI
1. 1 answer
2. 1,961 views
What are some good, recent books on the Crusades that are well-suited for use in a research paper?
1. 1 answer
2. 504 views
Problem 47Simon Hinson Company operates two divisions: Gordon and Ronin. A segmented income statement for the company’s most
1. 0 answers
2. 1,051 views
Radio Ad: Write a 150 to 200 word script for a radio ad that promotes a healthy musculoskeletal system in old age. Address the
1. 1 answer
2. 1,296 views
what were the similarities and differences between the five regions of British colonial America and what factors worked to
1. 0 answers
2. 611 views
what were the similarities and differences between the five regions of British colonial America and what factors worked to
1. 1 answer
2. 510 views
I guest I really don't understand this assignment. Compose a list identifying the major components of health communication. Who
1. 2 answers
2. 1,541 views
Compose a list identifying the major components of health communication. Who is involved in each component? How does each
1. 5 answers
2. 869 views
What are the most important concepts you have learned in this course? How can you apply them to your life? What difference can
1. 1 answer
2. 880 views
Urbanization, Describe environmental benefits and challenges of urbanization; describe two 1996 Dubai award winners
1. 1 answer
2. 804 views
How could you use a reporter gene to see if a certain gene was an activator for an operon? Would you insert the reporter in
1. 0 answers
2. 400 views
WHICH ARTISTS HAVE BEEN IN THE ROMANTICISM MOVEMENT, AND PAINTED lANDSCAPES?
1. 1 answer
2. 436 views
I am really stuck, can someone please help me with this?Multiply and simplify by factoring. Assume that all expressions under
1. 1 answer
2. 650 views
Can someone please help me with this?Solve ∛(x+1) = 3
1. 3 answers
2. 369 views
Do polymonials contain rational numbers as exponents?
1. 1 answer
2. 455 views
Can someoe please help me figure this out?During the first part of a trip, a canoeist travels 63 miles at a certain speed. The
1. 1 answer
2. 665 views
Can someone show me how this would be simplifyed?5^1/2 * 5^1/4
1. 1 answer
2. 377 views
Is this a true statement?Polynomials and radical expressions differ because radical expressions contain rational numbers as
1. 1 answer
2. 679 views
Why is it important to simplify radical expressions before adding or subtracting?
1. 1 answer
2. 485 views
How is adding radical exressions similar and different to adding polynomial expressions?
1. 1 answer
2. 479 views
How would you explain how the laws of exponents work with rational exponents?
1. 1 answer
2. 555 views
Cans omeone le me know if I arrived at the correct answer?To determine the number of deer in a game preserve, a conservationist
1. 3 answers
2. 754 views
I don't understand how to do this, can someone please help me?To determine the number of deer in a game preserve, a
1. 1 answer
2. 721 views
Find the LCM foru^3 + 6u^2 + 9u, u^2 - 6u I came up with u(u+3)(u-6) is this correct?
1. 1 answer
2. 791 views
Can someone please help me, I'm stuck.Find all numbers for which the rational expression is undefined. 7/(3v+7)
1. 2 answers
2. 449 views
I am having trouble with this.Add (simplify if possible) (x^2 + 11x)/(x^2 - 3x) + (x^2 - 6x)/(x^2 - 3x) I actully came up with
1. 1 answer
2. 552 views
Find the LCM10b^6 c^6, 5b^5 c^4, 14b^3 c^7 What is the LCM? I came up with 70(b^6)(c^7) Did I do this correctly? Thank you
1. 1 answer
2. 515 views
Find the LCM10b^6 c^6, 5b^5 c^4, 14b^3 c^7 What is the LCM? I came up with 70(b^6)(c^7) Did I do this correctly? Thank you
1. 0 answers
2. 510 views
I am having trouble with this.Add (simplify if possible) (x^2 + 11x)/(x^2 - 3x) + (x^2 - 6x)/(x^2 - 3x) I actully came up with
1. 0 answers
2. 1,270 views
6x^3/36x)*(49v^4/7v^2)=[(6/36)*(x^3-1)]*[(49/7)*(v^4-2)] =[(x^2)/6]*(7v^2) =(7v^2x^2)/6 Is this the right answer? I feel like I
1. 1 answer
2. 405 views
Can someone let me know if I hve the correct answer?Divide and simplify (x^2-16)/(49x+196)÷(x-4)/28 I came up with the answer
1. 0 answers
2. 1,019 views
I do not think that this has a solution, is that correct?(y-3)/(y-6)=3/(y-6)
1. 1 answer
2. 387 views
I can't figure this out, can someone please help me?Add 6/(x-4)+ 6/(x+4)
1. 1 answer
2. 409 views
I am having trouble with this, can someone please help me?Add (simplify if possible) x^2 + 11x x^2 - 6x __________ + __________
1. 2 answers
2. 604 views
I am having trouble with this, can someone please help me?Add (simplify if possible) x^2 + 11x/x^2 - 3x + x^2 - 6x/x^2 - 3x
1. 1 answer
2. 507 views
4-v/v-9 - 2v-5/9-vI came up with v-1/v-9 Is this correct?
1. 1 answer
2. 342 views
Solve8/y+4 = 7/y-7 y=84 did I solve this correctly?
1. 1 answer
2. 453 views
Solve8/y+4 = 7/y-7 y=84 did I solve this correctly?
1. 1 answer
2. 391 views
This problem asks me to subtract and simplify if possible4-v/v-9 - 2v-5/9-v I came up with v-1/v-9 Is this correct?
1. 1 answer
2. 458 views
I am having trouble figuring this out.ADD (r - 6s + 3) + (7r + 5s) + (s+5)
1. 2 answers
2. 669 views
On a graph, what is the slope of(-2,0); (0,1)?
1. 1 answer
2. 381 views
I wrote this wrong on my last post, it should have read,On a graph, what is the slope of (-2,0); (0,1)?
1. 1 answer
2. 493 views
On a graph, what would be the slope of(0,-2); (0,1)?
1. 0 answers
2. 370 views
Using the intercepts to graph the equationX + 5y = 10 What points would I plot on the graph?
1. 2 answers
2. 2,027 views
Using the intercepts to graph the equationX + 5y = 10 What points would I plot on the graph?
1. 1 answer
2. 565 views
How would I use the intercepts to graph the equationx+2y=4 what points would I need to plot on the graph?
1. 1 answer
2. 540 views
Is this pair of lines parallel, perpendicular, or neither?2x+5y=7 5x-2y=8
1. 2 answers
2. 1,913 views
7[76-(-47-59)]=I am to simplify this. Is the correct answer 638?
1. 1 answer
2. 452 views