# Jon

Newest questions and responses by Jon-
## Math

How to calculate contribution margin that includes step variable cost? As an example: Ticket price per person: $50 Fixed cost: $60,000 Variable: $15 per person for first 10,000 customers, $10 per person for 10,001 to 15,000, $5 per person for 15,001 to

*asked on February 7, 2019* -
## math

4/7÷9/14

*asked on October 18, 2018* -
## Physics

If a wire of resistance R is stretched uniformly to 2.8 times its initial length, by what factor does the power dissipated in the wire change, assuming it remains hooked up to the same voltage source? Assume the wire's volume and density remain constant.

*asked on September 21, 2018* -
## Intermediate Algebra

Suppose a college bookstore buys a textbook from a publishing company and then marks up the price they paid for the book 33% and sells it to a student at the marked-up price. If the student pays $75.00 for the textbook, what did the bookstore pay for it?

*asked on December 3, 2017* -
## Nuclear Physics

Radioactive Carbon 14 (atomic number 6) is produced in the atmosphere when a neutron is absorbed by Nitrogen 14 (atomic number 7). Write the reaction and write its Q-value.

*asked on October 25, 2017* -
## Math

Arrange from lowest to highest. 3(6/30), 0.5, 6/13, 1/4 Please explain how :'(

*asked on October 18, 2017* -
## math

At first, a price was decreased by 12%, then it was discounted again by an additional 5%. What is the total percent of the discount?

*asked on May 29, 2017* -
## Physics

A car is traveling with a kinetic energy if 2200 J. If a braking force of 1100 N is applied to the car, how far will the car travel before it stops?

*asked on May 22, 2017* -
## Physics

A car is traveling with a kinetic energy if 2200 J. If a braking force of 1100 N is applied to the car, how far will the car travel before it stops?

*asked on May 22, 2017* -
## math

Robert spins the spinner and rolls a standard number cube. Find the probability that the spinner will stop on purple and the cube will show a six. The spinner has six equal slices, 1 purple, 3 green, 1 yellow, 1 red.

*asked on April 11, 2017* -
## Math

A man goes 7m east and then 24m to south. Find his distance from the starting point

*asked on December 28, 2016* -
## math! Quantitative methods!

Discuss 5 application areas of assignment methods of Linear programming.

*asked on December 12, 2016* -
## thomas middle such

what is the three digit mystery number? if it is less than 300. the tens digit is 5 more than the hundreds digit. the sum if the digits is 11. the hundreds digit is 3 less than the ones digit. the mystery number is

*asked on November 14, 2016* -
## Maths

Two identical jars are filled with mixtures of water and vinegar in the ratios of 2 to 1 and 3 to 1 respectively. If both jars are emptied into another container then the ratio of water to vinegar in the resulting mixture is.

*asked on November 8, 2016* -
## Algebra

Billy weighs 50lbs less then his brother together they weigh 210lbs what is the equation to figure out how much billy weighs

*asked on October 27, 2016* -
## math

How many $1 bills are the same as__________$10 bills?________-

*asked on September 14, 2016* -
## GEOMETRY

IF RAYAC BISECTS ANGLE DAB,AND ANGLE DAC =58,WHAT IS MOF ANGLE DAB?

*asked on August 17, 2016* -
## math

In the SmallState Lottery, three white balls are drawn (at random) from twenty balls numbered 1 through 20, and a blue SuperBall is drawn (at random) from ten balls numbered 21 through 30. When you buy a ticket, you select three numbers from 1-20 and one

*asked on June 30, 2016* -
## Trig

find the equation for the cosine function that has an amplitude of 3/5, a period of 3pi/2 and a y-intercept of 5.

*asked on May 3, 2016* -
## Science

A 2 kg mass is hanging from a spring with a constant of 1500 N/m. The mass is pulled down a distance of 0.3 m and then released. If the specific heat capacity of the spring is 0.35 J/gK, the spring has a mass of 10 g and the initial temperature of the

*asked on April 28, 2016* -
## algebra 2

Question: Write the equation of a cubic function that has the x-intercepts of -4, 2, and 5 and passes through the point (6,20) My Answer: y = .5x^3-1.5x^2-9x+20 What I did: Put the x-intercepts and given point into stat plot (on calculator) then hit stat

*asked on March 6, 2016* -
## Physics

A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The

*asked on February 14, 2016* -
## Math

Don's pays his jimmy 2.00 per hour for the first hour. He plans to pay him double for the next six hours. How much would he earn at the end of six hours?

*asked on January 24, 2016* -
## accounting

wat is the similarity between traditional costing and activity based costing?

*asked on January 16, 2016* -
## calculus

A wire along 1 meter is divided into three parts . The first part is formed into a circle , the second part is formed into an equilateral triangle , and the third part is formed into a square . Determine the size of each section so that the total area of

*asked on January 8, 2016* -
## Physics

Salt water is poured into a U tube until it stands 0.250 m high in each arm. Oil is then added slowly to one arm until the salt water in the other arm stands 0.300 m high. The free surface of the oil then stands at 0.321 m high. (the weight density of the

*asked on December 11, 2015* -
## Mays

A Java book is comprised of two sections core and advanced Java in the ratio 7:3. How much of each type of content will be needed to make a book of 450 pages?

*asked on December 4, 2015* -
## Therrell

When measuring distance 12 beads are Approxmately equal to 6 erasers. How many erasers are equal to 18 beads? How many beads equal to 42 erasers?

*asked on December 4, 2015* -
## Mays high school

Mr. Jeff divided his money in the ratio 4:2 between Jon and jack. Jon got the smaller amount of 1,256. How much did jack receive?

*asked on December 4, 2015* -
## Honors Chemistry

Predict Products and write balanced equation FeBr3 + 3Ba(0H)2

*asked on December 3, 2015* -
## Kennedy

There are 28 classes at an elementary school. The school cafeteria needs 22 cartons of milk per class each day. Milk costs 25 cents per carton. How many cartons of milk does the manager need to order each day?

*asked on October 26, 2015* -
## Math

How many numbers can be formed by multiplying some or all of the numbers 2,3,4,5,6,7,8? The answer is 48 but I don't know how to get there?

*asked on October 20, 2015* -
## english

You want to determine how many rainfall will fall in a certain time period. You collect rain as they fall from the sky onto a piece of bucket with an area of t square meters. If you want to determine the rainfall count as accurate as possible, you should

*asked on October 13, 2015* -
## english

You want to determine how many rainfall will fall in a certain time period. You collect rain as they fall from the sky onto a piece of bucket with an area of t square meters. If you want to determine the rainfall count as accurate as possible, you should

*asked on October 11, 2015* -
## Physics

A certain car is capable of accelerating at a uniform rate of 0.83 m/s2 . What is the magnitude of the car’s displacement as it accelerates uniformly from a speed of 80 km/h to one of 92 km/h? Answer in units of m.

*asked on September 24, 2015* -
## Science

If the specific heat of a marshmallow is 2 J/g, how much heat is given off when it cools from room temp (25C) to its liquid nitrogen bath. Weight of the marshmallow 7.4g

*asked on July 14, 2015* -
## math conversion

convert from Chinese into American standard measurement; 1800 24Kg. Please,

*asked on June 21, 2015* -
## Carmel

A memory card is one quarter full when 375 more pictures are taken it'll be two thirds full how many pictures can the memory card hold and how many pictures are on it?

*asked on June 16, 2015* -
## physics

If a small planet were discovered whose orbital period was twice that of Earth, how many times farther from the Sun would this planet be?

*asked on May 9, 2015* -
## World History

What were social, political and economic causes of WWI?

*asked on April 23, 2015* -
## Science

What is the momentum of a 2 kg rock moving at 3m/s?

*asked on April 14, 2015* -
## Science

Describe the difference between the momentum between a tennis ball and a wrecking ball that is thrown at the same speed.

*asked on April 14, 2015* -
## Math

How do I solve this problem? 6C3 A. 120 B. 720 C. 20 D. 240 Is it 6*5*4*3*2*1

*asked on April 12, 2015* -
## physics

An object is released from rest at an unknown height h above the ground. One second later a second object is released from rest at the same height. When the first object strikes the ground, the second is 20 m above the ground. What is the initial height h?

*asked on April 8, 2015* -
## Math

A painter bought some paint for $500. He paid $x for each litre of paint. He accidentally spilt 5 liters of paint and sold the remainder of the psint for $2/litre more than he paid for it. If he made a profit of $40, find the amount he paid for each litre

*asked on March 18, 2015* -
## FINANCE

Below is a list of account balances for Currie Hospital as of December 31, 2013. Prepare a balance sheet as of December 31, 2013, in proper form. (Hint: You will need to compute the net assets account. Assume that all net assets at the beginning of the

*asked on March 15, 2015* -
## organic chem

does 2,3 hexanediol have 2 stereocenters? I just wanna check that before i attempt to draw isomers

*asked on March 12, 2015* -
## Chem NMR

this one is dealing with H NMR... The compound is N,N-dimethylacetamide. Why would there be 2 distinct peaks from the 2 Methyl groups attached to the Nitrogen atom? This would suggest they are in different environments, why?

*asked on March 12, 2015* -
## CHEM NMR

this one is dealing with H NMR... The compound is N,N-dimethylacetamide. Why would there be 2 distinct peaks from the 2 Methyl groups attached to the Nitrogen atom? This would suggest they are in different environments, why?

*asked on March 11, 2015* -
## Accounting

The GoodTaste Club collected recipes from members and published a cookbook entitled Eat 'Em Up. The book will sell for $18 per copy. The chairwoman of the cookbook development committee estimated that the club needed to sell 14,600 books to break even on

*asked on March 8, 2015* -
## chemistry

1. You are given a mixture containing two compounds, A and B. Both compounds have a solubility of 1 g/ 100 mL of solvent at 20 °C and 16 g/ 100 mL of solvent at 100 °C. The sample is composed of 3.5 g of A and 10 g of B. At 100 °C the entire sample just

*asked on March 2, 2015* -
## social studies

what is the greatest challenge facing people in turkey as a result of its diversity? 1. Turks must protect their status as the largest ethnic group 2. Turks must encourage other to follow Turkish traditions 3. Kurds must struggle to keep their cultures

*asked on March 2, 2015* -
## art

an artist loved to work with smooth, flowing paint that has vibrant color. Know she has many months to finish a commission. Her best choice for a material would be: 1. tempera paint 2. oil paint 3. acrylic paint 4. watercolor'

*asked on February 17, 2015* -
## social studies

How do people make up for water scarcity in the dry parts of Israel? 1. by building dams 2. by trading in oil 3. by using irrigation pipelines 4. by importing fresh water

*asked on February 10, 2015* -
## math

A rock is thrown up in the air at 30 ft/second. It has height in feet given by H(t) = −16t 2 + 30t. When does the rock have a velocity equal 10 ft. per a second?

*asked on February 4, 2015* -
## Math

Write in simplest form 4/7 divided by 5/8

*asked on February 4, 2015* -
## chemistry

Please help what is the molecule CH3CH2CHCHCH3

*asked on January 23, 2015* -
## PHYSICS

A 1250 KG wrecking ball is lifted to a height of 12.7 m above its resting point . When the wrecking ball is released, its swings toward an abandoned building and makes an indentation of 43.7 cm in the wall. A) What is the potential energy of the wrecking

*asked on January 22, 2015* -
## Chemistry

As a purity check for industrial diamonds, a 22 - carat diamond (1 carat = 0.2g) is heated to 63 degrees C and immersed in 26g of water in a constant pressure calorimeter. The initial temperature of the water is 23 degrees C. Calculate the ΔT of the water

*asked on January 12, 2015* -
## Chemistry

2C2H2(g) + 3O2(g) 4CO(g) + 2H2O(g) What is delta G° for this reaction in J/mol? (T = 298.17 K)

*asked on January 12, 2015* -
## Chemistry

Calculate the heat transferred when a 23 g of iron nail is cooled from 67oC to 20oC. The specific heat of iron is 0.45 J/goC.

*asked on January 12, 2015* -
## Chemistry

A skillet made of Iron (Fe) weighing 1.8 kg is heated on a stove to a temperature of 202 degrees C. If the skillet is removed from the stove and allowed to cool to room temperature (21 degrees C), how much heat must be removed from the skillet. The

*asked on January 12, 2015* -
## Chemistry

A current of 4.00 A is passed through a solution of AgNO3 for 1.00 hr. What mass of silver is deposited at the cathode? (In grams) Use Faraday's constant F = 9.65x10^4 C/mol

*asked on January 11, 2015* -
## Chemistry

How long (in seconds) does it take to deposit 1.065e+001 g Zn on a steel gate when 2.375e+001 A are passed through a ZnSO4 solution?

*asked on January 11, 2015* -
## Physics

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 18.0 m. Next, the student stands at the edge of the

*asked on January 5, 2015* -
## Science

Assume that you have 15ml of 2.5M potassium hydroxide but only have concentrated bottle of 16M strength. How would you obtain this

*asked on December 17, 2014* -
## algebra

a train travels 600 miles from Los Angles to San Francisco traveling at a certain speed the return trip is made traveling 40 mph faster the return time is 4 less how fast was the train traveling in each direction?

*asked on October 19, 2014* -
## Calculus

Solve the following e^-x (square root((3e^2x) - 5/4)) = e^x

*asked on September 29, 2014* -
## physics

A football is kicked off with an initial speed of 65 ft/s at a projection angle of 45 degrees. A receiver on the goal line 63 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in

*asked on September 28, 2014* -
## math

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

*asked on September 24, 2014* -
## AP Chemistry

Form 300 mL of 0.25 M Copper 2 sulfate pentahydrate

*asked on September 17, 2014* -
## Math

A waiter made $120 in tips after waiting on 6 tables. What was the waiter's average tip per table?

*asked on September 12, 2014* -
## Physics

A commuter backs her car out of her garage with a constant acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 1.60 m/s? s (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration? m/s2

*asked on September 10, 2014* -
## math

80% of the American population likes pizza. If 8 Americans are chosen at random, find the probability that 6 of them like pizza.

*asked on June 28, 2014* -
## scienc

Mass of a bick

*asked on June 8, 2014* -
## physics

With a magnetic field perpendicular to a single 13.2 cm diameter circular loop of copper wire decreases uniformly from .670 T to zero. If the wire is 2.25 mm in diameter how much charge moves past a point in the coil during this operation?

*asked on April 28, 2014* -
## Chemistry

An equilibrium mixture in a 10.0 L flask contains 7.0 mol HI(g) and 1.0 mol each of I2(g) and H2(g). If 2.5 mol H2, 5.0 mol I2 and 2.0 mol HI are added to that equilibrium mixture how many moles of each gas will be present when equilibrium is

*asked on April 16, 2014* -
## finance

A bond that has a $1000 par value (face value) and a contract or coupon interest rate of 11.1%. The bonds have a current market value of $1125 and will mature in 10 years. The firms marginal tax rate is 34%. The cost of capital from this bond debt is what

*asked on April 3, 2014* -
## Physics

A toy dart gun has a spring with a spring constant of 315 N/m. An 12 gram dart is loaded in the gun and the spring is compressed a distance of 7.8 cm and then shot into the air. When the dart is 5.8 meters high in the air, what is its speed? If the maximum

*asked on March 31, 2014* -
## math

If a new home can be constructed for $160,000, what is the opportunity cost of federal defense spending, measured in terms of private housing? (Assume a defense budget of $700 billion.)

*asked on March 23, 2014* -
## probability

We have two fair three-sided dice, indexed by i=1,2. Each die has sides labelled 1, 2, and 3. We roll the two dice independently, one roll for each die. For i=1,2, let the random variable Xi represent the result of the ith die, so that Xi is uniformly

*asked on February 27, 2014* -
## probability

Given that there were 4 Heads in the first 7 tosses, find the probability that the 2nd Heads occurred at the 4th toss. Give a numerical answer.

*asked on February 27, 2014* -
## algebra I

drop a ball at 30000 feet at 30 feet per second and a ball bounces up at 40 feet per second what height do they meet and what speed

*asked on February 16, 2014* -
## Physics

A car is traveling at 16.0 m/s, and the driver sees a traffic light turn red. After 0.500 s (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where

*asked on January 24, 2014* -
## Physics

A uniform beam of weight 245 N, and length L, sticks out from a vertical wall. A lightweight cable connects the end of the beam to the wall, making an angle of 65.0° between the beam and the cable. What is the tension in the cable?

*asked on December 3, 2013* -
## Math

P(x) = (2x^3+x^2-18x-9)/(x^2-x-6) 1.Find any holes in the graph of P(x) 2.Find any horizontal or oblique asymptote 3.Determine where it crosses the horizontal/oblique asymptote (if it does)

*asked on November 29, 2013* -
## statistics

Typing speeds among college students are normally distributed with a mean of 60 words, and a standard deviation of 10 words. determine the typing speed that separates the top 6% typists from the rest.

*asked on November 24, 2013* -
## Statistics

142 out of 507 people were right. Calculate a 95% confidence interval for the proportion of the entire population that could be right. I did some of the work …Please help. I am getting .0199 SD =sqt(.28(1-.28)/506 = .0119 so .28 +/- .0119 so I could say

*asked on November 24, 2013* -
## Statistics

142 out of 507 people were right. Calculate a 95% confidence interval for the proportion of the entire population that could be right. I did some of the work and got .72...don't know what to do with this? Please help.

*asked on November 24, 2013* -
## Trigonometry

a 100 pound box hangs between two ropes T1 and T2 the angle at the top of T1 is 28 degrees and the angle at the top of T2 is 35 degrees. what does T1 and T2 equal? Must show work

*asked on November 15, 2013* -
## Trigonometry

A box is on a 10 degree incline with 180 pounds of force against the box. What is the weight of the box?

*asked on November 15, 2013* -
## Physics - PLEASE HELP

A rod is 2.40 m long and has a diameter of 2.50 mm. A force of 2000 N is applied to the end to stretch the rod by 1.00 mm. What is the tensile modulus for this rod? 7.50 × 1011 N/m2 8.70 × 1011 N/m2 9.78 × 1011 N/m2 10.2 × 1011 N/m2 10.8 × 1011 N/m2

*asked on November 10, 2013* -
## Algebra 2

In triangle FGH, the measure of angle G is three times that of angle F. The measure of angle H is 20 degrees more that that of angle F. Find the angle measures

*asked on October 10, 2013* -
## english

Can someone check my english essay. 700 words. I have English as 2nd language

*asked on September 20, 2013* -
## Chem still confused

1.) A biochemistry student wants to make 4 liters of a phosphate solution using 48.6 g Na2HPO4 (FW=141.96) What is the concentration of this solution? 2. When she reaches the storeroom she finds that there is no Na2HPO4, however there is a bottle of

*asked on September 16, 2013* -
## Chem wondering how to set it up

1.) A biochemistry student wants to make 4 liters of a phosphate solution using 48.6 g Na2HPO4 (FW=141.96) What is the concentration of this solution? 2. When she reaches the storeroom she finds that there is no Na2HPO4, however there is a bottle of

*asked on September 16, 2013* -
## finance

A thirty-year U.S. Treasury bond has a 4.0 percent interest rate. In contrast, a ten-year treasury bond has an interest rate of 3.7 percent. If inflation is expected to average 1.5 percentage points over both the next ten years and thirty years, determine

*asked on July 28, 2013* -
## statistics

There is a table of AVERAGE monthly temperatures of two different areas of the same city. A scatterplot of the data is made to show that the relationship is linear between the two. If raw data was used instead of the averages to make the scatterplot, the

*asked on July 3, 2013* -
## Physics

A thin massless horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located at a distance r from the axis, starts crawling inside the pipe at constant speed v (relative to the pipe). Because of the bug,

*asked on June 18, 2013* -
## physics

True or false. Electric energy is transferred from generating stations to consumers' premises at extremely low voltage?

*asked on June 12, 2013*