# Questions Asked onMay 16, 2020

1. ## probability

13 people study French, 15 people study German and there are 21 people in total. What is probability to chose person who takes both of the languages?

2. ## Chemistry

If milk has a density of 1.03 g/mL, what is the mass of 6.00 qt, reported in kilograms?

3. ## Probability

Let X1 , X2 , X3 be i.i.d. Binomial random variables with parameters n=2 and p=1/2 . Define two new random variables Y1 =X1−X3, Y2 =X2−X3. We further introduce indicator random variables Zi∈{0,1} with Zi=1 if and only if Yi=0 for i=1,2 . Calculate

4. ## maths

With each n-trough there are n balls, each with integer diameter at most n. Two or more balls may have the same diameter. They are rolled down the trough one at a time, not necessarily in size order. If a ball drops through a hole, it triggers a trapdoor

5. ## Algebra

How many 4-digit multiples of 7 are there?

6. ## Mathematics

I am studying for my exams and do not know if I tackled correctly this word problem. Would appreciate any help. Thank you "Tony and Doris wish to fence off part of their garden to create a rectangular enclosure for their dogs. One side of the enclosure

7. ## History

How did the Chinese government react to the fall of Communist Russia? A. When Soviet states withdrew from the USSR, Chinese diplomats sought to acquire Russian states located along the Chinese border. B. The Chinese government predicted that its own system

8. ## Chemistry

The method of standard additions was used to determine nitrite in a soil sample. A 1.00-mL portions of the soil extract sample was transferred to four 25-mL volumetric flasks. To each flask, increment volumes of a 1.00 x10-3 M nitrite was added according

9. ## Mathematics

A man left of his estate in kerugoya to his wife and to each of his two sons the remainder was to be shared equally among his six brothers if the estate was worth shs 3456000 how much did each of those people get?

10. ## Probability

Let X and Y be independent random variables with zero means, and variances 1 and 2, respectively. Let U=X+Y and V=X+2Y . Find the coefficients a and b of the Linear Least Mean Squares (LLMS) estimator VˆL=aU+b of V based on U . find a and b.

11. ## mathematics

1 What is the chance that you pick a vowel from the name DELCAMP if you pick at random? 1 What's the chance that you pick a consonant from the name MONROY if you pick at random? REDUCE YOUR FRACTION. Y is a consonant is this case. 1 What's the chance of

12. ## Math

x^13 / x^2 (This is a fraction) A: x^13/2 B: x^15 C: x^11 D: x^26

13. ## Math

Write an algorithm prompts a user to enter 15 masses of goats and display average mass

14. ## Probability

Problem 1. Starting at time 0, a red bulb flashes according to a Poisson process with rate λ=1 . Similarly, starting at time 0, a blue bulb flashes according to a Poisson process with rate λ=2 , but only until a nonnegative random time X , at which point

15. ## science

in the equation, KCL+Pb(No3)2+PbCl2. what is reducing and what is being oxidized

16. ## Mathematics

Construct a triangle ABC such that BA=10cm

17. ## Physics

An object of mass 9.0 kg is moving due west with a uniform speed of 4.0 m/s. It suddenly explodes into two parts having masses of 6.0 kg and 3.0 kg. Just after the explosion, the 3.0 kg mass has a velocity of 15 m/s due west relative to the Earth's

18. ## English

I have to make a comic strip based on any episode of Tom Sawyer book of class-7 NCERT

19. ## Algebra

Let x, y, and z be distinct nonzero real numbers and x + (1/y) = y + (1/z) = z + (1/x) Find all possible values of xyz. I don't even know where to start! Any help is appreciated, thank you :)

20. ## probability

Tickets numbered from one to 40 are mixed up and one is drawn. What is the probability that number is divisible by 3 or 5? What is the probability that number is divisible by 3 and 5?

21. ## Probability

Let X1 , X2 , X3 be i.i.d. Binomial random variables with parameters n=2 and p=1/2 . Define two new random variables Y1 =X1−X3, Y2 =X2−X3. We further introduce indicator random variables Zi∈{0,1} with Zi=1 if and only if Yi=0 for i=1,2 . Calculate

22. ## History

what is Vj day : Victory Over Japan?

23. ## Math

In how many ways can a 6 people sit in a toboggan (sled) if only 2 can drive?

24. ## history

To boost wartime production and help the Allies, the War Manpower Commission-recruited women for jobs -forced women to work at home -encouraged soldiers to return home to work -conscripted more soldiers into the military

25. ## English

In “Brave New World" what are the ways of obtaining instant gratification aside from soma?

26. ## chemistry

How is column chromatography and planar chromatography methods are performed?

27. ## chemistry

I have a question in one of my assignments but I don't know how to answer it, the question is "The bigger the ion, the slower. The smaller the ion, the faster mobility. Which side of the 0.5 M NaBr | 0.5 M KBr junction will be more negative? Explain" Thank

28. ## math

Tutors on jiskha help you 57 times and there are over 10 tutors. how many questions did botaman ask. answer= jiskha is the best. you are always helping people 24/7 so if you dont mind me asking, how are you? are you stressed? do you enjoy what you do? you

29. ## physics

A disk having moment of inertia $$100kg\cdot m^2$$ is free to rotate without friction, starting from rest, about a fixed axis through its center. A tangential force whose magnitude can range from $$F = 0$$ to $$F = 50.0$$ N can be applied at any distance

30. ## Science

In modern injection molding units, why is a reciprocating screw used instead of a plunger? Give 3 reasons how this advantage is achieved.

31. ## molecular biology

Experiments have shown that a defective gene gives a defective enzyme. Hence there is argument of that one gene is responsible for making one enzyme. Discuss whether this statement is correct or not. Give ONE example to support.

32. ## biology

Gilbert is doing a SDS-PAGE experiment and he cannot find sodium dodecyl sulfate (SDS) for the experiment. He wants to use the household detergent to replace SDS and he said that the cancer cells are easily being lysed even by household detergent. Will he

33. ## Geometry

What is the maximum ha (vertical height) of the ABC triangle given its perimeter = 19 m and hb = 7 m (lateral height)?

34. ## Probability

Problem 1. Note: You may find the following useful for this problem. For i.i.d. random variables Xi and a nonnegative random variable N that is independent of all the Xi 's: E[∑i=1NXi] = E[N]E[X1] Var[∑i=1NXi] = E[N]Var[X1]+(E[X1])2Var(N). Each phone

35. ## Probability

Let X and Y be jointly continuous nonnegative random variables. A particular value y of Y is observed and it turns out that fX|Y(x∣y)=2e−2x , for x≥0 . Find the LMS estimate (conditional expectation) of X . unanswered Find the conditional mean

36. ## Probability

Let X and Y be independent random variables with zero means, and variances 1 and 2, respectively. Let U=X+Y and V=X+2Y . Find the coefficients a and b of the Linear Least Mean Squares (LLMS) estimator VˆL=aU+b of V based on U . a= unanswered b= unanswered

37. ## math

A regular deck of cards has total of 52 cards. (Note: Aces count as 1.) If one card is drawn at random from the deck, find the probability of the following events: a It is a diamond

u=v+2t

39. ## Mathematics

u=v+2t make t the subject of the formula

40. ## Mathematics

Solve 2x+7>+x +19 and can you do the same if 2 was 3? 2nd question is write an expression if 3 was open inequality and line continues past negative 5

41. ## Probability

Let X and Y be independently random variables, with X uniformly distributed on [0,1] and Y uniformly distributed on [0,2] . Find the PDF fZ(z) of Z=max{X,Y} 1. For z2 : find fZ(z) 2. For 0≤z≤1 : find fZ(z)

42. ## Math

Let X and Y be independently random variables, with X uniformly distributed on [0,1] and Y uniformly distributed on [0,2] . Find the PDF fZ(z) of Z=max{X,Y} find fZ(z) 1. For z2 : 2. For 0≤z≤1 : 3. For 1≤z≤2 :

43. ## Science

An acrobat performs with a swing, as shown in the diagram . Which of these most likely happens as the acrobat moves from Point 1 to Point 2? A. Potential energy decreased and kinetic energy increases. B. Potential energy increases and kinetic energy

44. ## history

what was a big difference between the Texas Constitution of 1836 and the Texas Constitution of 1845

45. ## Math

convert each measurement to meters liters or grams 8kl

46. ## Statistics

In a survey conducted to determine the costs of holidays, 196 individuals were randomly sampled. Each was asked to assess the total cost of his or her most recent holiday. The average cost was \$1386.

47. ## Mathematics

Make d the subject of the relation . R= d^2/8h+h/2

48. ## History

Which is the best description of how climate impacted westward expansion? A) As the region became more and more populated, the way of life of the Native Americans changed. B) Trails through the mountains followed passes that were often impassible during

49. ## Math

Out if 56 coins, 18 are rare. If you select 10 of the coins, what us the probability that all of them are rare ? P(picking rare coin) = 18/56 = 0.3214 q= 1-p = 1-0.3214= 0.6786 , number of trials = 10 a) All rare coins: ncr= 10c10= n!/(r!*(n-r) =

50. ## Algebra

The amount of eel fishing in Europe fell by 95% from 1980 to 2010. How many eels learn there will be left in 2030, if the percentage decrease per year is unchanged over time.

51. ## History

What is the significance of Hiroshima and Nagasaki (1945) ???

52. ## Physics

A car of mass M, traveling at speed v collides head-on with a truck of mass 2M & traveling in the opposite direction at the same speed. Both vehicles lock together and come to a stop. Which, if either, has the most momentum upon impact? Which, if either,

53. ## psw

Your client is 84 and has rheumatoid arthritis. Each week the RN distributes her medication for each day in a docette. Today your client’s joints seem very inflamed and she asks you to open her docette for her. i need the answer

54. ## Science

Is gravity a contact or field force?

55. ## Mathematics

find the first four terms using the binomial theorem 1/(sqrt(x^2 - (3/y))

56. ## Geometry

In right triangle ABC,