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Questions (65)
Let K be a discrete random variable that can take the values 1 , 2 , and 3 , all with equal probability. Suppose that X takes
3 answers
2,627 views
The random variable K is geometric with a parameter which is itself a uniform random variable Q on [0,1]. Find the value
1 answer
836 views
If your mass is 84 kg , find your acceleration.
1 answer
2,349 views
I got the answers already and correct me if I am wrong. I just need help finding the mean and standard deviation for section B.
A
1 answer
770 views
Fill in the blanks correctly
Observation - hypothesis - theory - law 1. A system of ideas or principles which are a set of
0 answers
685 views
Block A, with a mass of 10 kg, rests on a 36.9° incline. It is attached to a string that is parallel to the incline and passes
2 answers
691 views
Find the rectangular coordinates of the point, whose cylindrical coordinates are given.
(a) (4, π/4, 1) (x, y, z) = (b) (6,
1 answer
874 views
Change from rectangular to cylindrical coordinates. (Let r ≥ 0 and 0 ≤ θ ≤ 2π.)
(a) (3, −3, 2) (b) (−2, −2sqrt3, 5)
1 answer
1,818 views
Write the equations in cylindrical coordinates.
(a) 3z = 2x^2 + 2y^2 (b) 7x^2 + 7y^2 = 4y
0 answers
595 views
Find the rectangular coordinates of the point, whose cylindrical coordinates are given.
(a) (4, π/4, 1) (x, y, z) = (b) (6,
0 answers
696 views
Write the equation of the sphere in standard form.
x2 + y2 + z2 + 4x − 2y − 2z = 19
2 answers
3,293 views
Find, correct to the nearest degree, the three angles of the triangle with the given vertices.
A(0, 1, 3), B(-2, 4, 5), C(1, 4,
1 answer
1,369 views
Does the series converge? diverge? Use the Root test
((1/n)-(1/n^2))^n
0 answers
490 views
Does the series converge or diverge? Use the Root test
((1/n)-(1/n^2))^n
0 answers
492 views
Does the series converge or diverge? Use the comparison test. Thank you
((1/n)-(1/n^2))^n
1 answer
646 views
Series converges? or diverges? Which test? explain?
(n^10) * (3^n) ------------(fraction) (4^n) from n=1 to infinity
1 answer
446 views
Sum?
from n=3 to infinity ((2)/(n+1)-(2)/(n+3))
1 answer
355 views
Series converges? or diverges? Which test? explain?
(-1)^n * (4n^3) ------------(fraction) (n^4) + 1
1 answer
565 views
Is the following series convergent? explain
((2n)!)/((n!)(4^n))
1 answer
358 views
Does the sequence converge? Work out
a=-1^n
1 answer
394 views
Solve the integral using trig substitution (1/((x)(x^2+1)))dx
1 answer
446 views
Integrate 1/(x(x^2+1)) dx
using trig substitution
1 answer
546 views
Evaluate the integral using u substitution
((y^3)/((1-y^2)^2))dy
1 answer
493 views
A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of
1 answer
956 views
A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of
0 answers
780 views
A region is bounded by y=2x and y=4sqrt(x). Find the volume when rotated along
1)y=-1 2)the y axis
1 answer
613 views
The region in the first quadrant bounded by the 𝑦-axis and the curve 𝑥 = 2𝑦2 − 𝑦3 (graph please) is revolved about
1 answer
664 views
A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of
1 answer
3,866 views
The vector signs are above each letter (I just don't know how to show it that way)
A= 145 units @ 190 deg. B= 75 units @ 288 deg.
1 answer
531 views
The vector signs are above each letter (I just don't know how to show it that way)
A= 145 units @ 190 deg. B= 75 units @ 288 deg.
2 answers
537 views
Mixed Rationals:
Solve these question in two or three steps: 879 + 47/22 4591 - 133/61 -1 + 17/13 -68 - 18/7 -1297 + 763/512
1 answer
809 views
What is the momentum of a two-particle sys- tem composed of a 1300 kg car moving east at 60 m/s and a second 1500 kg car moving
1 answer
1,033 views
Henry Clay:
What did they say about their hopes for the future of the United States? How did they work to help change the United
4 answers
1,193 views
A solution with a pH of 7 has a [OH1-] of?
0M or 7M???????????????????
1 answer
402 views
A solution with a pH of 7 has a [OH1-] of?
1 x 10-7 M?? Is that correct
4 answers
932 views
Let ABCD be a cyclic quadrilateral. Let P be the intersection of \overline{AD} and \overline{BC}, and let Q be the intersection
0 answers
1,067 views
Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a
1 answer
703 views
A town has population 225 people at year t=0. Write a formula for the population, P, in year t.
a) grows by 10% per year I don't
1 answer
1,206 views
I am stuck on this one problem and think it might be the teachers typo but don't want to point it out without being sure. You
0 answers
367 views
f(x)=2+4x-x^2 when x is less than 2
thus f-1(x)=2-sqrt(-x+6) i need to show that f(f-1(x))=x, but i keep getting negative x...any
1 answer
754 views
have 0.0114 mole of Cu(OH)2 (s) a gelatinous precipitate. After heating, and converting all of it to CuO(s) wash the solid as a
1 answer
447 views
The combined capacity of a bottle and a glass is equal to the capacity of a pitcher. The capacity of a bottle is equal to the
1 answer
1,385 views
An empty truck weighs 2000 kg. After the truck was loaded, freight made up 80% of the weight of the loaded truck. At the first
0 answers
694 views
In how many ways can you express the number 2003 as a sum of two prime numbers?
A) 1 B) 2 C) 3 D) 4
1 answer
521 views
sovle the following equation
8/x-1=9/(x)(x+2) i know the answer is -1,7 but how?
1 answer
393 views
I solved the equation below and got an answer of 9+-sqrt(57) but i don;t belive this is correct. help please.
5-sqrt(8x+1)=x
0 answers
599 views
Joseph invested 3/4 of his lottery winnings to a corporate bond which gives a simple 8% interest after 1 year, and the rest he
2 answers
489 views
A HELICOPTER hovering above a forest fire dumps a large bucket of water. How far does the water fall in the first 3.0 seconds
t=3
1 answer
754 views
Factors which effect reaction rates. 1) Concentration 2) Temperature 3) Presence of a Catalyst 4) Surface area 5) Orientation
You
1 answer
722 views
Explain how micelles and more complex solutions work. Consider all Solute-solute, Solvent-solute and Solvent-solvent
1 answer
706 views
In nonpolar molecules what part does Molecular Weight play in the strength on their intermolecular forces?
0 answers
428 views
Explain in glorious detail the difference between H2O and H2S
0 answers
390 views
Explain solvation and/or hydration
0 answers
348 views
Explain why H2O and NH3 are both dipole-dipole interactions yet H2O boils at a significantly higher temperature.
0 answers
784 views
explain 1) Ion-Ion
2) Ion-Dipole 3) Dipole-Dipole 4) Dipole-Induced dipole 5) Induced dipole-Induced dipole
1 answer
401 views
Distinguish between polar bonds and polar molecules.
0 answers
489 views
why would ca+ and co+ form soluble salts?
1 answer
371 views
what is the difference between acid base reaction and oxidation reaction
1 answer
397 views
If you had used a different mass of magneisium metal would you expect the empirical formula of the compiund to be the same?
2 answers
871 views
is a portable drill the same as a cordless drill? i`m confused i don`t know if they are the same or different.
1 answer
605 views
what is the definition of
1/ portable drill 2/ pillar drill 3/countersink 4/pilot hole thanks for your help
3 answers
636 views
i forgot to mention i need some photos of the airbus factory in Broughton Chester. i can`t seem to find any.
thankyou
4 answers
658 views
Please could someone help me i need to write an essay about airbuses.These are the questions i need to write my essay about.
2 answers
685 views
does anyone know any science revision games about mr mcluthon i need to use it for my revision but can`t find them . thanks
0 answers
544 views
does anyone know any good sites about the spanish armada that explains it simply. i need to write an essay about why it failed
1 answer
600 views
