Ralph
Popular questions and responses by Ralph
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 
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 
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 
maths
At the local sports academy, everybody plays netball or tennis. Given that half the tennis players also play netball and onethird 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 
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 
math
16. If you work 37.5 hours per week at $10.65 per hour, how much is your gross pay for a twoweek 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 
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 
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 
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 
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 
math
how do i solve the equation for x and y y+4x=27 xy+x=40
asked on May 23, 2008 
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 
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 nonelectrolyte) 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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
computer science
how do i write a program in python for an atm machine
asked on November 9, 2010 
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 
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 
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 
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 
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 
science
what is the speed of an ice skater who completes a 5000m race in 7min
asked on February 2, 2020 
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 
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 
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 
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 
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 
math
Prove that it is impossible to tile an 8 × 8 checkerboard with 1 × 3 tiles
asked on February 8, 2015 
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 
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 
History of Puerto Rico
Need info in English on biographies of political and cultural leaders of Puerto Rico between 18501950
asked on March 26, 2013 
English
What is noun?
asked on March 10, 2013 
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 
Intermediate Algebra
Write with radical notation y^4/5
asked on April 21, 2012 
Intermediate Algebra
Write with rational exponents 3 square root of x^2
asked on April 21, 2012 
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 
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 
math
solve by substitution method: 8x3y=94 2x+22=y
asked on July 24, 2011 
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 
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 
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 
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 
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 
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 
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 
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 
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 
Math2
Given f, a derivable function and y = f (x)^3 + 40√(f(x)+12) . Knowing that f(4) = 4 and that dy/dxx=4 = 14 , calculate f’(4)
asked on March 23, 2011 
Math
given the fonction: y=3x^25x and x=g(t)derivable as g(14)=4 and g'(14)=2 calculate dy/dt in t = 14
asked on March 23, 2011 
science
would a screen be useful for separating a mixture of gravel and diatomaceousearth powder?
asked on March 22, 2011 
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 
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 
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 
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 
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 
Algebra
I have no clue here. Simplify 8[0  (9795)]=_________.
asked on May 26, 2010 
science
why are natural languages not suited for programming of computers?
asked on April 20, 2010 
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 
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 
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 
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 
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 
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 
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 
Calculus
What is the difference between f'(x), y', and dy/dx?
asked on October 26, 2009 
Economics
Goods produced by the government are called? Is it Public Goods or externalities?
asked on October 4, 2009 
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 
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 
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 runon (comma splice): ...
asked on April 25, 2007

maths
Haha yeah just a silly spelling mistake. sorry
posted on February 13, 2020 
statistics
.76
posted on September 22, 2019 
statistics
076
posted on September 22, 2019 
Math
30000
posted on August 28, 2019 
Math
What are the answers to the whole 8 question practice?
posted on March 7, 2019 
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 
Physics
Penny Wedding Ring Bowling Ball Basketball
posted on November 12, 2017 
physics
boobies
posted on October 20, 2016 
Inflation Exam
$4,382.039
posted on December 10, 2015 
physics
show me the answer
posted on October 15, 2015 
solid mensuration
1.5sqrtof208 ft
posted on September 24, 2015 
math
how do you prove this?
posted on February 8, 2015 
Math
I'm not april, but thanks though
posted on January 16, 2015 
physics
13
posted on January 6, 2015 
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 
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 
Intermediate Algebra
yes sorry i meant 3 cubed root of x^2
posted on April 21, 2012 
managerial accounting
A fastfood 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 
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 
math 090
95
posted on December 21, 2011