# 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

asked on February 13, 2020
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

asked on September 21, 2008
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?

asked on February 9, 2020
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?

asked on February 9, 2020
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?

asked on June 21, 2011
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

asked on May 23, 2014
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.

asked on September 9, 2010
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?

asked on April 18, 2008
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

asked on July 11, 2020
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.

asked on April 22, 2012
11. ## math

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

asked on May 23, 2008
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

asked on June 22, 2015
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

asked on May 2, 2010
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

asked on February 9, 2020
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.

asked on July 17, 2016
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

asked on February 8, 2015
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?

asked on November 16, 2014
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)

asked on September 9, 2014
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?

asked on July 19, 2012
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.

asked on May 4, 2012
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.

asked on April 21, 2012
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?

asked on June 14, 2011
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

asked on April 20, 2011
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

asked on April 19, 2011
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

asked on April 19, 2011
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

asked on April 6, 2011
27. ## computer science

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

asked on November 9, 2010
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

asked on May 19, 2010
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.

asked on May 19, 2010
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?

asked on March 22, 2010
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

asked on January 12, 2010
32. ## maths

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

asked on June 14, 2020
33. ## science

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

asked on February 2, 2020
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??

asked on June 19, 2016
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?

asked on May 29, 2016
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

asked on June 29, 2015
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

asked on February 8, 2015
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.

asked on February 8, 2015
39. ## math

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

asked on February 8, 2015
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?

asked on February 8, 2015
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?

asked on November 16, 2014
42. ## History of Puerto Rico

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

asked on March 26, 2013
43. ## English

What is noun?

asked on March 10, 2013
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

asked on March 8, 2013
45. ## Intermediate Algebra

Write with radical notation y^4/5

asked on April 21, 2012
46. ## Intermediate Algebra

Write with rational exponents 3 square root of x^2

asked on April 21, 2012
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

asked on April 21, 2012
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..

asked on January 18, 2012
49. ## math

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

asked on July 24, 2011
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=?

asked on April 20, 2011
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

asked on April 20, 2011
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

asked on April 20, 2011
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=?

asked on April 20, 2011
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

asked on April 20, 2011
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

asked on April 18, 2011
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

asked on April 17, 2011
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

asked on April 16, 2011
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

asked on April 7, 2011
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)

asked on March 23, 2011
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

asked on March 23, 2011
61. ## science

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

asked on March 22, 2011
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?

asked on February 23, 2011
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?

asked on February 23, 2011
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

asked on February 17, 2011
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

asked on December 10, 2010
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).

asked on December 10, 2010
67. ## Algebra

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

asked on May 26, 2010
68. ## science

why are natural languages not suited for programming of computers?

asked on April 20, 2010
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

asked on April 5, 2010
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?

asked on February 15, 2010
71. ## chemistry

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

asked on February 15, 2010
72. ## Geometry

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

asked on January 27, 2010
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

asked on January 26, 2010
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?

asked on January 11, 2010
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.

asked on December 4, 2009
76. ## Calculus

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

asked on October 26, 2009
77. ## Economics

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

asked on October 4, 2009
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

asked on August 8, 2009
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

asked on August 28, 2007
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): ...

asked on April 25, 2007
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

show me the answer

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