# Ralph

Popular questions and responses by Ralph
1. ## maths

A minor makes claim to a circular piece of land with a radius of 40 m from a given point, and is entitled to dig to a depth of 25 m. If the minor can dig tunnels at any angle, find the length of the longest straight tunnel that he can dig, to the nearest

2. ## english

are the following sentences correct?the price of these jeans is reasonable. the quality of the candle is poor. bread and butter are our daily food. the books borrowed from the library are on my desk. the famous singer and composer have arrived. the boy who

3. ## maths

At a speedway, the yellow car completes a lap every 30 seconds and the blue car completes a a lap every 50 seconds. If the cars both start at the same place, how long will it take for the blue car to 'lap' the yellow car?

4. ## maths

At the local sports academy, everybody plays netball or tennis. Given that half the tennis players also play netball and one-third of the netballers also play tennis, what is the probability that a randomly chosen person at the academy plays both?

5. ## physics

As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 its mass is 0.145. A) What is the baseballs acceleration in m/s^2 and in g's? B) What is the size of force acting on it?

6. ## math

16. If you work 37.5 hours per week at \$10.65 per hour, how much is your gross pay for a two-week period? (Round off your answer to the nearest cent.) A. \$399.38 B. \$788.10 C. \$239.26 D. \$798.75 i think its c

7. ## math problem solving organized list

tonya and lauren are designing a socce r uniform.they want to use two colorson the shirt.their choices are green,purple,orange,yellow,blue and silver.how many ways can they choose two colors.

8. ## chemistry 2

The pH of a Ba(OH)2 solution is 10.66. What is the hydroxide concentration? If the solution volume is 125ml, how many grams of Ba(OH)2 have been dissolved?

9. ## maths

The heights of residents living in a college can be said to be normally distributed with mean 158.1 cm and standard deviation 9.8 cm. It is known that Greg is taller than 26% of the residents in the college. How many standard deviations below or above the

10. ## Intermediate Algebra

If a projectile is fired straight upward from the ground with an inital speed of 96 feet per second, then its height (h) in feet after t seconds is given by the equation h(t)=-16t^2+96t Find the maximum height of the projectile.

11. ## math

how do i solve the equation for x and y y+4x=27 xy+x=40

12. ## Physics

A bottle with a volume of 196 U. S. fluid gallons is filled at the rate of 1.08 g/min. In years, how long does the filling take? (The density of water is 1 g/cm3 and 1 U.S. fluid gallon = 231 in3.) 196(231)/(1.08) The answer given was 1.31 years, not sure

13. ## Chemistry

Calculate the boiling points of freezing points of the following solutions in water. a) boiling point of a 2.25m solution of propylene glycol (a non-electrolyte) b)freezing point of a 1.0m solution of potassium iodide c)freezing point of a 1.0m solution of

14. ## maths

A bag contains eight counters that are red, blue or yellow. A counter is selected from the bag, its colour noted and the counter replaced. If 100 counters were selected and 14 were red, 37 were blue and 49 were yellow, how many counters of each colour are

15. ## Word problems using equations

A park is 30 meters by 24 meters. It has a path of uniform width around it. Find the width of the path if its area is one fourth that of the garden.

16. ## math

This problem is about pizza. You have a circular pizza and you want to slice it with n straight cuts into the maximum number of pieces possible (not necessarily all of the same size). Let Pn = this maximum number of pieces you can slice a pizza into with n

17. ## Math

Connie wants to have an annuity payment of \$2,000 at the END of every three months. How much should she deposit now at 6% interest, compounded quarterly, to yield this payment for 3 years?

18. ## math

Nilsa converted 1/12 to a repeating decimal and wrote __ 0.083 as her answer. What error did she make? ___ (Should it actually be 0.0833)

19. ## physics

A decorative piece consists of a 20cm long uniform brass rod weighing 4N and two ornaments, one weighing 6N and one weighing 10N, fixed to the ends. At what point should a supporting chain be attached so that the ornament balances?

20. ## Geometry

ABCD is a parallelogram with angle B= 120, angle C= 60, angle D= 2x+5y, and angle A= 4x+y. Find the values of x and y. Check your solution, only an algebraic solution will be accepted.

21. ## Intermediate Algebra

The function h(t)=-16t^2+100t+300 gives the height in feet of a projectile fired from the top of a building in t seconds. A) When will the object reach a height of 350 feet? Round answer to one decimal place. B) Explain why part A has two answers.

22. ## Physics

A train, initially stationary, has a constant acceleration of 0.5 m/s Squared. A) what is its speed of 15 s? B) What would be the total time it would take to reach a speed of 25 m/s?

23. ## Math3

a) A young man measuring 1.89 m. walks at a velocity of 1m/s towards a lamppost which its light is at 4m from the ground. At what velocity does the young man's shadow decrease when he's 10 m away from the lamppost? b) A young girl, standing at the edge of

24. ## Math

The two sides of a isosceles triangle have a fixed lenght of 14 cm. The opposite angle at the base of the triangle increases by 0.3 rad/min. a) what is the growth rate dx/dt of the base of the triangle when the opposite angle mesures 1.6 rad? (Use the law

25. ## Math

The two sides of a isosceles triangle have a fixed lenght of 14 cm. The opposite angle at the base of the triangle increases by 0.3 rad/min. a) what is the growth rate dx/dt of the base of the triangle when the opposite angle mesures 1.6 rad? (Use the law

26. ## Math (logarithmic functions)

Those are the only ones I can't seem to resolve. Thank you! resolve x: 1) 9*3^0,51x = 315 2) 10*3^15x+21 =363*2^9x+51 3) log(15x^2) - log(3x) = 4*log(3) 4) log[of base 3]*(15x + 4) = 3

27. ## computer science

how do i write a program in python for an atm machine

28. ## Chemistry

A chunk of silver has a heat capacity of 42.8 J/degrees C and a mass of 181g. Calculate the specific heat of silver. Did I do these steps right? 42.8 Joules/degrees C / 181g = .236joules

29. ## Chemistry

A chunk of silver has a heat capacity of 42.8 J/degrees C and a mass of 181g. Calculate the specific heat of silver.

30. ## Chemistry

The combustion reaction of acetylene gas is represented by this equation: 2 C2H2(g) + 5 O2(g) ==> 4 CO2(g) + 2 H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?

31. ## math

Find the tax on a dinette with a cash price of \$200 that has been reduced by 20% if the tax rate is 6.5% The taxable value of the property in the tax area is usually referred to as the ? value. 1. taxable 2. assessed Please help me with these. after these

32. ## maths

What is probability of getting 2 or more dots when rolling a fair die? Thanks for help in advance

33. ## science

what is the speed of an ice skater who completes a 5000m race in 7min

34. ## math

How many terms of arithmethic sequence with the common difference of 4. And the first is equal to 3 and the last term 59??

35. ## math

a snail moves along the edge of a triangular lawn ABC from A back to A . The distance AB was done 15mins, BC in 25 mins and it took the snail 40 mins to do CA. What was the average speed of the snail in centimeters per second?

36. ## Physics

A parachutist bails out and freely falls 64.7 m. Then the parachute opens and thereafter she decelerates at 1.88 m/s2. She reaches the ground with a speed of 3.07 m/s. What is her average speed (in m/s) for the fall? I was planning on finding the time

37. ## geom.

Given a triangle ABC, draw straight lines from the vertex A to n points on the opposite side BC. (None of these n points can equal B or C.) Then do the same for the vertex B, drawing n lines from B to the side AC. Into how many parts do these 2n lines

38. ## math

Below is a sequence an, for n = 0, 1, 2, ... n 0 1 2 3 4 5 6 7 8 9 an 25 25 19 25 61 145 295 529 865 1321 Use the method of finite differences to find a closed formula for this sequence.

39. ## math

Prove that it is impossible to tile an 8 × 8 checkerboard with 1 × 3 tiles

40. ## math

Among the integers from 1 to 10, 000, 000, 000 which are there more of: Those in which the digit 1 occurs or those in which it does not occur?

41. ## Math

Your bank pays 9% interest, compounded annually. Use the appropriate formula to find how much you should deposit now to yeild an annuity payment of \$800 at the END of each year, for 10 years?

42. ## History of Puerto Rico

Need info in English on biographies of political and cultural leaders of Puerto Rico between 1850-1950

43. ## English

What is noun?

44. ## summarize

Decision making is a process by which several possibilities are considered and prioritized, resulting in a clear choice of one option over others. Decision making is a fact of life personally and in business. We make dozens of decisions each day. Some

46. ## Intermediate Algebra

Write with rational exponents 3 square root of x^2

47. ## Intermediate Algebra

If the discriminant of a quadratic equation has the given value, determine the number and type of solutions of the equation. A.48 B.0

48. ## English

I need help identifying the use of the infinitive by writing noun, adjective or adverb. 1. Am I too late to volunteer? To volunteer. 2. If you enjoy mysteries, Agatha Christie's Witness for the Prosecution is a good play to read. To read..

49. ## math

solve by substitution method: 8x-3y=-94 2x+22=y

50. ## Math2

We pour water into a conical container of a radius of 10 cm with a height of 36cm at a rate of 70 cm^3/s. At what velocity does the water level increase when it reaches 12 cm? dh/dt=?

51. ## Math

The two sides of a isosceles triangle have a fixed lenght of 14 cm. The opposite angle at the base of the triangle increases by 0.3 rad/min. a) what is the growth rate dx/dt of the base of the triangle when the opposite angle mesures 1.6 rad? (Use the law

52. ## Math3

a) A young man measuring 1.89 m. walks at a velocity of 1m/s towards a lamppost which its light is at 4m from the ground. At what velocity does the young man's shadow decrease when he's 10 m away from the lamppost? b) A young girl, standing at the edge of

53. ## Math2

We pour water into a conical container of a radius of 10 cm with a height of 36cm at a rate of 70 cm^3/s. At what velocity does the water level increase when it reaches 12 cm? dh/dt=?

54. ## Math

The two sides of a isosceles triangle have a fixed lenght of 14 cm. The opposite angle at the base of the triangle increases by 0.3 rad/min. a) what is the growth rate dx/dt of the base of the triangle when the opposite angle mesures 1.6 rad? (Use the law

55. ## Math

The radius of a disk grows at 2cm/s. Calculate the growth rate of the disks area when the radius mesures 7 cm. (Designate the area of the disk with A and the radius with r) A) Find the relation between A and r B) Find the derivative of this relation on

56. ## Math

The radius of a disk grows at 2cm/s. Calculate the growth rate of the disks area when the radius mesures 7 cm. (Designate the area of the disk with A and the radius with r) A) Find the relation between A and r B) Find the derivative of this relation on

57. ## Math, statistics, Linear Programming

just looking for the constraints and variables. The Nestle’ Purina PetCare Company of St. Louis, Missouri, manufactures a gourmet cat food under the Fancy Feast brand. The brand includes a number of options for choices of meats, fish, and poultry in

58. ## Math

the concentration of a certain substance in our organism is given by the model Q9t) = Q(subscript 0) e^-0.1960t a) what quantity of substance is present in the organism of this individual 3 hours after ingestion? b) after how many hours will there only be

59. ## Math2

Given f, a derivable function and y = f (x)^3 + 40√(f(x)+12) . Knowing that f(4) = -4 and that dy/dx|x=4 = 14 , calculate f’(4)

60. ## Math

given the fonction: y=3x^2-5x and x=g(t)derivable as g(14)=-4 and g'(14)=2 calculate dy/dt in t = 14

61. ## science

would a screen be useful for separating a mixture of gravel and diatomaceous-earth powder?

62. ## physics

We throw a ball horizontally at 10m/s. (a) after how much time does the trajectory form a 30 degree angle? (b)after how much time after the throw did the velocity double?

63. ## physics

a stuntman runs on a roof and without giving himself a vertical impetus, wants to land on another roof, 2m lower and 5m further horizontally. What is the minimal velocity he needs to run at?

64. ## physics

a police car is cruising on the right lane at 25 m/s (meters/sec.). A motorcycle, on the left lane, passes the police car at a constant 35 m/s. The police officer reacts fast and accelerates at a constant 5 m/s^2. (a)When does he catch up? (b)What was his

65. ## Math

For y=f(x+2)- 3 write an equation of the asymptote to the graph. Is it y=(1/x) * (x+2)-3

66. ## Physics

Two pans of a balance are 50cm apart. If the fulcrum is displaced by 1cm what percentage is the true weight marked up? the answer i got was 1.3%, please help if wrong (which it probably is).

67. ## Algebra

I have no clue here. Simplify -8[0 - (97-95)]=_________.

68. ## science

why are natural languages not suited for programming of computers?

69. ## Chemistry

Calculate and compare the mass of the reactants with the mass of the products for each equation. a)2KClO3 (s) ==> 2KCl(s) + 3O2 (g) b)4NH3(g) + 6NO(g) ==> 5N2(g) + 6H2O(g) c)4K(s) + O2(g) ==> 2K2O(s) Show that each balanced equation obeys the law of

70. ## chemistry

How many moles of oxygen are there in 23.5g of H2SO4? (numbers are subscripts)How many oxygen atoms? How many grams of oxygen?

71. ## chemistry

What is the density of UF6 (subscript) gas? What volume would 2.35 moles of this gas occupy? (Assume STP)

72. ## Geometry

Construct a truth table ~p^q. How do we find this if we don't know what the p or q is???

73. ## Math

I need help calculating the finance charge and new balance using the previous balance method. Previous balance = \$179.32 Annual rate = 16% Finance charge = \$ ? New purchases = \$117.42 Payments/credits = \$85.00 New balance = \$ ? I also need help calculating

74. ## Bible Study

The fact that the Flood lasted over a year is? 1. a geological evidence for the local flood theory. 2. an evidence from Genesis for the local flood theory. 3. an objection to the local flood theory. 4. all of these. I think it is 4?

75. ## Accounting

A company incurs a cost for a part which is needed to repair a piece of equipment. Is the cost an asset or an expense? Explain.

76. ## Calculus

What is the difference between f'(x), y', and dy/dx?

77. ## Economics

Goods produced by the government are called? Is it Public Goods or externalities?

78. ## college

Suppose you are playing a word game with seven distinct letters. How many seven letter words can there be? Hint:Think about scrabble. It is ok it the word is gibberish in this case

79. ## math

write an algebraic expression for each word phrase 5 more then a number divied by 9 and 3 more then the productof8 and the number

80. ## sentence

The United States is not a democracy, it is a Republic. The United States is a democracy because the people elect its leaders. democracy Can someone help me understand how to use this word in a sentence? Correction of the run-on (comma splice): ...

1. ## maths

Haha yeah just a silly spelling mistake. sorry

posted on February 13, 2020
2. ## statistics

.76

posted on September 22, 2019
3. ## statistics

076

posted on September 22, 2019
4. ## Math

30000

posted on August 28, 2019
5. ## Math

What are the answers to the whole 8 question practice?

posted on March 7, 2019
6. ## econ

the answer would be 24, but you have to account for the foreign rates of having different political views so its wrong. the answer is B

posted on December 1, 2017
7. ## Physics

Penny Wedding Ring Bowling Ball Basketball

posted on November 12, 2017
8. ## physics

boobies

posted on October 20, 2016
9. ## Inflation Exam

\$4,382.039

posted on December 10, 2015
10. ## physics

posted on October 15, 2015
11. ## solid mensuration

1.5sqrtof208 ft

posted on September 24, 2015
12. ## math

how do you prove this?

posted on February 8, 2015
13. ## Math

I'm not april, but thanks though

posted on January 16, 2015
14. ## physics

13

posted on January 6, 2015
15. ## math

Liz has a revolving credit account at an annual percentage rate of 12%. Use the average daily balance method to find the new balance given the following statement of account.

posted on November 24, 2014
16. ## physics

no elena i believe quinton is looking for the electric field positions of Q2 and Q1 separately at different distances from each respectively

posted on May 2, 2012
17. ## Intermediate Algebra

yes sorry i meant 3 cubed root of x^2

posted on April 21, 2012
18. ## managerial accounting

A fast-food establishment is thinking of buying a new cooking grill and refrigeration unit. The costs of these new machines are \$12,500 and \$9,000, respectively. The installation costs of the new equipment will run about \$800. It is estimated that 10% more

posted on February 3, 2012
19. ## english

I have to identify the use of the infinitive in the following sentences. Infinitives begins with the word, to.... The 1st sentence is Am I too late to volunteer. The infinitive in that sentence is to volunteer. So, I have to identify the use of the

posted on January 18, 2012
20. ## math 090

9-5

posted on December 21, 2011