# Questions Asked onApril 19, 2020

1. ## Math

A group of 72 children completed a survey on what kind of activity they like. The choices were: Chess, Swimming, and Football. Everyone liked at least one activity except 7 kids, who don't like any of these three kinds of activities. 12 children liked

2. ## Maths

A room is 3m high with volume 60m3 calculate the area of the floor of the room

3. ## History

How might the coming of modern conveniences such as electricity change life for the indigenous people of Peru? A. They may begin to move away from some of their traditional ways of life and adopt more modern ways.

4. ## Probability

Let 𝑋 and 𝑌 be independent positive random variables. Let 𝑍=𝑋/𝑌. In what follows, all occurrences of 𝑥, 𝑦, 𝑧 are assumed to be positive numbers. 1. Suppose that 𝑋 and 𝑌 are discrete, with known PMFs, 𝑝𝑋 and 𝑝𝑌.

5. ## Calculus

The population (P) of an island y years after colonization is given by the function P=250/1+4e^-0.01y c. After how many years was the population growing the fastest? d. Using Curve Sketching methods, sketch the graph of the function. Make sure that you

6. ## Physics

Nuclear forces between proton proton proton neutron

7. ## math:Probability

A random variable X is generated as follows. We flip a coin. With probability p , the result is Heads, and then X is generated according to a PDF fX|H which is uniform on [0,1] . With probability 1−p the result is Tails, and then X is generated according

8. ## Calculus

Use the process of implicit differentiation to find dy/dx given that x^3e^y-ye^x=0

9. ## physics

A ball at the end of a rope is swung in a circle that is parallel to the ground. If the ball is then swung around in a circle that is perpendicular to the ground, which of the following statements is true? Assume the speed and length of rope are the same

10. ## Science

A cube of ice is dropped carefully into cylinder of liquid, and the following observations are made ; 1. The cube floats about half-way down the cylinder. 2. After 30 secs the cube has melted a little but floats in the same position. 3. After 50 secs the

11. ## science

A road from the bottom of a hill to the top is 800 feet long, and the top of the hill is 60 feet higher than the bottom. The angle of elevation of the road is ___ degrees.

12. ## Math,stat

A smartphone company receives shipments of smartphones from three factories, labelled, 1, 2 and 3. Twenty-five percent of shipments come from factory 1 whose shipments contain 8% defective smartphones. Sixty-five percent of the shipments come from factory

13. ## Physics

An AC generator delivers an alternating current I(t) = (3.4 A) sin[(140π rad/s)t] to a single resistor in series with the generator. (a) What is the rms value of the current in the circuit? (b) If the resistor has a resistance of 240.0 Ω, what is the

14. ## Probability

We are given a stick that extends from 0 to x . Its length, x , is the realization of an exponential random variable X , with mean 1 . We break that stick at a point Y that is uniformly distributed over the interval [0,x] . Find joint PDF fX,Y(x,y) of X

15. ## Science

Describe the context of your community in terms of its environmental resources, social relations, culture, and economic activities and explain how you could make a biofuel technology or water harvesting technology fit appropriately in such context

16. ## Maths

My proffersor gave us all to do this It it worth 50% of my assessment score this semester but I don't really know how to even go about have been googling it online but still no luck..... I need details analysis Conjecture : The equation 24b= 2(ab+1) has no

17. ## Physics

Nuclear forces between fundamental elements

18. ## Science

How to solve for bonds from compound?

19. ## Maths

Ravi decides to Choose a 5 digit passcode from the Following 7 characters 1. 9. 6. 7. R. P # No digits are used twice A ) how many combinations of 5 digits are there ? B) Probability that The one he chooses will start with a R and end in P

20. ## math

mrs johnson baked 2 dozen cookies two thirds of cookies were oatmeal how many cookies did mrs johnson bake

21. ## statistics

Q: Use the following information to determine whether or not you should reject or fail to reject the null hypothesis: SBetween=100 SSWithin=500 n per group=20 (i.e. total n=80) H0: µ1= µ2= µ3= µ4 H1: At least one mean is different α=.05 A: I

22. ## math

Maggie has a box of 200 colored blocks. The box has an equal number of green and blue blocks and an equal number of red and yellow blocks. If Maggie arranged all of the green blocks in stacks of 10 and all of the blue blocks in stacks of 7, how many yellow

23. ## math

In a study of the domestic market share of the three major automobile manufacturers A, B, and C in a certain country, it was found that their current market shares were 60%, 30%, and 10%, respectively. Furthermore, it was found that of the customers who

24. ## career

Now that you have explored different types of careers, you should have some idea of what kind of career you would like to pursue. In one or two paragraphs, answer the following questions: What kind of job within your chosen career field do you wish to

25. ## math

Let Z be the standard normal variable with μ = 26 and σ = 3.2. Find the value of P(24 < X < 34).

26. ## Calc

Find an equation of the curve whose tangent line has a slope of f'(x) =2x^-10/11, given that the point ​(-​1,-4​) is on the curve.

27. ## Physics

Three identical small balls are placed at the corners of an equilateral triangle as on the picture below. Find coordinates, Xcm and Ycm, of the center of mass (CM) of this system. The find (A) Moment of inertia relative to an axis through CM and parallel

28. ## Math

Find the probability of spinning a 5 and rolling a 1, 2, or 3. A) 1/16 B) 1/2 C) 1/6 D) 1/8

29. ## Math

An experiment consists of spinning a spinner. Use the results in the table to find the experimental probablity that the spinner does not land on green.

30. ## Math

A pumpkin pie costs \$12.55 at Bobby’s Bakery. If the pie has a diameter of 12 inches what is the cost per square inch of the pie?

31. ## Accounting

Magic Mountain retires its 8% bonds for \$126,000 before their scheduled maturity. At the time, the bonds have a face value of 124,000 and a carrying value of \$116,000. Record the early retirement of the bonds. (If no entry is required for a

32. ## Math

If you make a tree diagram and then list all of the possible outcomes for flipping a coin and rolling a 6-sided die, how many possible outcomes are there? A) 2 B) 6 C) 12 D) 36

33. ## Math

The 90 men that visited restaurant take one of either pounded yam, rice or Amala. 10 take pounded yam and rice 19 take rice and Amala and 29 take pounded yam and Amala, x men take all the three menu. 2x men each take one food item. How many men take all

34. ## Chemistry

When the temperature of 4 dm cube of an ideal gas is increased from 200k to halved,calculate the final volume of the gas

35. ## science

This example of sedimentary rock is formed when rock fragments, minerals, and the remains of plants and animals are deposited as sediments and are then A) chemically weathered by water. B) compacted and cemented together. C) recrystalized under the weight

37. ## Chemistry

1. Mention 3 occurrences of chlorine 2. Mention 2 chemical properties of chlorine 3. Discuss the laboratory preparation of chlorine

38. ## Calc

The slope of the tangent line to a curve is given by f'(x)=4x^2 + 7x -9. If the point ​(0,6​) is on the​ curve, find an equation of the curve.

39. ## Science

What are two major differences in the composition of the inner and outer planets? I don't know what they mean my comparing their compostions.

40. ## math

Which coordinate pairs lie on the x-axis? Select two answers. A. (0,5) B.(0, -13) c.(4,0) d.(-1,0)

41. ## Calc

y=sqrt(x^2-5x+4) find: - local min/max - inflection points - horizontal/vertical asymptote - inc/dec

42. ## English

Does this sentence , “The explorers whom I most admire are astronauts “ have a essential or nonessential clause”

43. ## Physics

VERY URGENT PLEASE HELP!!! A block of mass 493 g is pushed against the spring (located on the left-hand side of the track) and compresses the spring a distance 4.9 cm from its equilibrium position (as shown in the figure below). The block starts from rest,

44. ## Science

Two point charges Q1 = 10µc and Q2 = 2µc are arranged along the x-axis at x = 0 and x=4m respectively. Find the position along the x-axis where v = 0.

45. ## Math

2x+3y=13 I keep getting fractions 2x= 13-3y Div both sides by 2 X= 13/2 -3y/2 Then y same

46. ## English

In the Outsiders by S.E Hinton who is the true outsider? Have one example why that character is the true outsider.

47. ## Algebra

You are standing on the ground when a friend standing on a balcony asks you to toss him his keys. He can catch the keys as long as they are at least 4 meters above the ground. If you toss the keys from an initial height of 2 meters with an initial vertical

48. ## Math

The vertex of an angle measuring 32° is in the exterior of a circle and its sides are secants of the circle. If the sum of the measures of the intercepted arcs is 180°, find the measure of each intercepted arc.

49. ## algebra

Solve this equation: x^2+4x-5=0

50. ## Algebra

Find the slope of the line (3,3) (7,5)

51. ## Math

The quest say round answer to nearest thousandth if necessary. 2/24 = 0.83333 if i round would be 0.083 if in thousandth . Therefore , it doesn't need rounding ?

52. ## Physics

A series RLC circuit with a resistance of 116.0 Ω has a resonance angular frequency of 5.1 ✕ 105 rad/s. At resonance, the voltages across the resistor and inductor are 60.0 V and 40.0 V, respectively. (b) At what frequency does the current in the

53. ## Math

Write the formula for absolute value function if its graph has the vertex at point ( 1/3 ,−3) and passes through the point (1,1).

54. ## math

How does x^2(4.72*10^-12)-x(3.26*10^-6)-1=0 become x= .920072? If you know how can you show me the steps to the answer.

What is the effective rate of the interest rate of the interest when the rate is 6 percent compounded continuously?

56. ## physics

A person with mass 60kg is sitting on a Ferris wheel at a distance of 10m from the center. If the person experiences a constant force of 600N on them as they go around, what is the period of the motion? Express your answer to three significant figures.

57. ## Math

Suppose that 30% of a population carries a certain gene. You want to estimate the probability that it will take at least a sample of four to find a person that carries the gene, how could you simulate a person having or not having the gene? A) 0, 1, 2

58. ## History

1) Who were the Nor' Westers a. farmers who settled on the north west territories b. railroad workers who were involved in the building of the northwest line c. sailors who traviled the route from the eastern seaboard to the pasific northwest territories

59. ## physics

Two satellites orbit Earth with the same mass, but satellite A orbits at a distance of 2 Earth radii whereas satellite B orbits at a distance of 3 Earth radii. By what factor is satellite B's gravitational force smaller than A's? (Hint: You are finding the

60. ## physics

Calculate the work and power done when a track athlete lifts a 20 kg barbell 0.6 meters in 0.8 seconds.

61. ## Chemistry

What is the concentration in % (m/v) of a solution with 75 g K2SO4 dissolved in 1500 mL of solvent?