# jess

Popular questions and responses by jess-
## geometry

the perimeter of a triangle is 59 inches. the longest side is 11 inches longer than the medium side, and the medium side is 3 inches more than the shortest side. Find the length of each side.

*asked on May 4, 2010* -
## english

what does these quote mean? 1.)"my life for itself and not for a spectacle" 2.)An institution is the lengthened shadow of a man. 3.) Life only avails, not the having lived. 4.) Insist on yourself; never imitate Thanks for your help!

*asked on January 4, 2009* -
## history

Which Chinese religious text, whose title translates to The Book of Changes, influenced Hinduism in India?

*asked on November 27, 2019* -
## chemistry

I keep thinking that 3 is the van't hoff factor for ammonium chloride, but I keep getting my answer wrong. Any ideas?

*asked on February 11, 2011* -
## Math

A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 higher than in the first. The tax in the first city was 4% , and the tax in the second city was 7% . The total hotel tax paid for the two cities was

*asked on April 1, 2013* -
## AP Chem

CH3CH2NH2(aq) + H2O(l) CH3CH2NH3+(aq) + OH-(aq) Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to the equation above. A 50.0 mL sample of a ethylamine solution is found to have a pH of the solution 11.60. (a) Write the expression

*asked on April 23, 2013* -
## Math - Limits/Derivatives

Suppose that for a company manufacturing calculators, the cost, revenue, and profit equations are given by C = 70,000 + 20x R = 300x - (x^2 / 20) P = R - C where production output in 1 week is x calculators. If production is increasing at a rate of 600

*asked on October 19, 2013* -
## chemistry

23) The equilibrium constant for the gas phase reaction 2NH3 (g) N2 (g) + 3H2 (g) is Keq = 230 at 300 °C. At equilibrium, __________. A) reactants predominate B) products predominate C) only products are present D) roughly equal amounts of products and

*asked on November 18, 2010* -
## Math - Decimals

Is 0.052 or 0.05 a bigger number?

*asked on June 5, 2013* -
## Algebra

allan borrowed $6400 from his father to buy a car. he repaid him after 9 months with interest of 8% per year. find the total amount he repaid.

*asked on November 30, 2017* -
## math

the longest straight line that can be drawn to connect two point on the circumference of a circle whose radius is 9 inches is A. 9 inches B. 18 inches C. 28.2743 D. 4.5 inches is the correct answer b?

*asked on August 3, 2018* -
## STATISTICS HELP!!!!!

Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 175 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each

*asked on October 24, 2014* -
## Calculus - Integrals

The projected rate of increase in enrollment at a new college is estimated by dE/dt = 6,000(t+1)^-3/2 where E(t) is the projected enrollment in t years. If the enrollment is 3,000 now (t=0), find the projected enrollment 15 years from now.

*asked on November 21, 2013* -
## PHYSICS

A wet bar of soap slides freely down a ramp 12.0 m long, inclined at 74.0 degrees. How long (in seconds) does it take to reach the bottom? (Neglect friction.)

*asked on March 7, 2012* -
## Physics Part A HELP!!

4.) In coming to a stop, a car leaves skid marks 80m long on the highway. Assuming a DEceleration of 7.00 m/s^2 (m/s/s), estimate the speed of the car just before breaking. 6.) A car traveling @ 90km/h strikes a tree. The front end of the car compresses

*asked on December 14, 2015* -
## 11th grade-Logs

log x = 1/2 (log a + Log b - log c) express x in terms of a,b,and c.

*asked on December 21, 2009* -
## Exexponential Growth Modeling

Researchers find that there are 60 Raccoons on an island. When they return a year later, they find that there are 84. What is the annual population growth rate for the raccoons?

*asked on April 30, 2016* -
## Math

Sue decides to collect postcards. She starts her collection with seven cards. Every week, she buys three more cards to add to her collection. How many weeks will it take her to have more than 30 cards? 11 7 8 30 Can somone help me figure out the equation

*asked on September 7, 2018* -
## Chemistry

1. A combination reaction may also be a displacement reaction. True or False 2. The combustion of an element is always a combination reaction. True or False For number 1, I first thought true, but then again, nothing is being displaced in a combination

*asked on November 19, 2014* -
## Geometry

In a garden, a birdbath 2ft 6 in. tall casts an 18-in. shadow at the same time an oak tree casts a 90-ft shadow. How tall is the oak tree?

*asked on April 14, 2014* -
## Calculus - Optimization

A fence is to be built to enclose a rectangular area of 800 square feet. The fence along 3 sides is to be made of material $4 per foot. The material for the fourth side costs $12 per foot. Find the dimensions of the rectangle that will allow for the most

*asked on November 17, 2013* -
## Math

A certain triangle has a perimeter of 3080 mi. The shortest side measures 71 mi less than the middle side, and the longest side measures 373 mi more than the middle side. Find the lengths of the three sides.

*asked on September 6, 2018* -
## english

'By now, everyone knows that eating right and exercising are important.' What change should be made to this sentence? A. Replace knows with knows' B. Insert comma after right C. Replace important with important? D. No correction necessary 'People who

*asked on July 18, 2018* -
## math

How can you use subtraction to complete an addition pattern? use this exercise as an example: 32, 39, 46, 53, 60, 67.

*asked on February 19, 2012* -
## history

Which identifies the conflict that arose over rubber production in the Belgian Congo? The desire of the Congolese to keep control of their rubber production led to an international war between Belgium and the Congo. Global demand for rubber and a lust for

*asked on February 4, 2020* -
## Biology!!

1. what's a huge difference between the chemical equations for Respiration and Alcoholic fermentation &... What determines whether a facultative organism will go through respiration or fermentation *For the first part of the Question, (I looked it up but I

*asked on May 16, 2017* -
## Chemistry

Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C? a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol

*asked on May 27, 2016* -
## Calculus

Given that the antiderivative of f(x) = e4x is F(x) = 1/4e^4x+C, evaluate the integral from 0 to 2 of e^4x, dx. e^8 1/4(1-e^8) 1/4(e^8-1) 1/4e^8 (MY ANNSWER)

*asked on March 15, 2016* -
## english

In the Odyssey, which of Odysseus' traits allows him to triumph in the bow-and-arrow challenge that Penelope sets for her suitors? (1 point) his love for Penelope his loyalty to the gods **** his pride in his bow his skill as a marksman i think B

*asked on January 29, 2016* -
## Finance - Capital Budgeting/Bid Price

We have been requested by a large retailer to submit a bid for a new point-of-sale credit checking system. The system would be installed, by us, in 89 stores per year for three years. We would need to purchase $1,300,000 worth of specialized equipment.

*asked on December 1, 2013* -
## Macroeconomics

The money supply in Freedonia is $200 billion. Nominal GDP is $800 billion and real GDP is $400 billion. Assuming that velocity is stable, if real GDP grows by 10 percent this year, and if the money supply does not change this year, what is the change of

*asked on April 9, 2013* -
## Bio HELP!!!!

what is the name of the process throughh which polypeptides, polysaccharides or triglycerides are catabolised (broken down)?

*asked on July 7, 2012* -
## 11th grade physics

A car slows down from +32 m/s to +8 m/s in 4s. Calculate the acceleration .

*asked on November 29, 2010* -
## chemistry

The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF to that of 235UF6 at constant temperature?

*asked on November 9, 2010* -
## Maths

If g(x)>0 for all real values of x, which of the following could be function g? a) g(x)= x+1 b) g(x)=x-1 c) g(x)= x^2+1 d) g(x) = x^2-1 e) g(x) = x^3 + 1

*asked on July 12, 2010* -
## english

In the story told by Outa Karel in “The Little Red Tortoise,” why is the little red tortoise considered a dynamic character? Select all that apply. The Little Red Tortoise 1.He shows different emotions, from being brave to face the Blue One to being

*asked on June 10, 2020* -
## Math

A student experiences difficulty with malfunctioning alarm clocks. Instead of using one alarm clock, he decides to use three. What is the probability that at least one alarm clock works correctly if each individual alarm clock has a 90% chance of working

*asked on October 28, 2019* -
## physics

A catapult launches a cat from ground level to a target located on the ground. The cat leaves the catapult moving at 100 km/h at an angle of 40º. a) What is the cat’s velocity half-way through the trajectory (size and direction)? b) What is the cat’s

*asked on June 18, 2019* -
## Math

A boy is mowing a rectangular lawn 40ft long and 30ft wide. He has cut all of it except for a rectangle that is 20ft long and 15ft wide. What fractional part of the lawn remains uncut? I need helping figuring out how to solve this. My answer sheet says its

*asked on November 13, 2016* -
## Calculus - Optimization

A parcel delivery service a package only of the length plus girth (distance around) does not exceed 24 inches. A) Find the dimensions of a rectangular box with square ends that satisfies the delivery service's restriction and has a maximum volume. What is

*asked on November 16, 2013* -
## algebra 2

write an explicit formula for the sequence of 1/2, 3/7, 1/3, 5/19, 3/14

*asked on April 30, 2012* -
## Precalculus

If sinx= -1/4 and x terminates in the third quadrant, find the exact value of sin2x My answer is sqrt-15/8

*asked on August 6, 2011* -
## Physics

If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about ? -Hfinal=hinitial+ vinitial*t -4.9t^2 0=0+10t-4.9t^2 when I solved for t I got .49t. Also, where did 4.9 come from? A man leans over the

*asked on September 9, 2007* -
## History

What was the result of the passage of the Fourteenth Amendment? - Chinese immigration was suspended for 10 years. - All African Americans formally gained US citizenship. - A basic literacy test was required to become a US citizen. - Irish immigration

*asked on May 28, 2020* -
## biology

What must a phenylketonuria patient leave out of his or her diet? a specific amino acid all carbohydrates some specific carbohydrates all amino acids

*asked on January 8, 2020* -
## physics

After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be assumed to be at ground level during launch. With what speed

*asked on June 18, 2019* -
## Science

What is the density of a book whose mass is 1,800 g and whose volume is 300 cm3? *My Answer*You want to identify the numbers first, density = mass ÷ volume. Which would give you, 1800g ÷ 300 cm³ = 6 g/cm³. *Cant Figure Out *What is the mass of a ball

*asked on September 29, 2017* -
## Math

A charter fishing company buys a new boat for $224,000 and assumes that it will have a trade-in value of $115,200 after 16 years. Find a linear model for the depreciated value V of the boat t years after it was purchased.

*asked on October 23, 2013* -
## physics

at what altitude should a satellite be placed into circular orbit so that its orbital period is 48 hours? the mass of the earth is 5.976x10^24 kg and the radius of the eatrh is 6.378x10^6 m.

*asked on March 23, 2011* -
## math

The points A (7,6) and B (2,1) are 3 units and 2 units respectively from the line L and are on the opposite sides of L. Find the coordinates of the point where the interval AB crosses the line L.

*asked on January 6, 2011* -
## Literature

Please can you check my answer.. 13. According to Renaissance philosophy, commoners often represent A. reason. C. pride. B. love. D. appetite. I think it it... B. love. It that correct ?

*asked on January 18, 2010* -
## History

Why is the elasticity of the Constitution important to minority groups

*asked on May 29, 2020* -
## math

the greatest common factor of 2x4x6x8x10 and 1x2x3x4x5 is A. 2 B. 4 C. 8 D. 120

*asked on September 1, 2018* -
## Chemistry

The temperature of a lead fishing weight rises from 26 C to 38 C as it absorbs 11.3 J of heat. What is the mass of the fishing weight in grams? ( The specific heat capacity of lead is 0.128 J /g C )

*asked on February 15, 2018* -
## Physics

A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 4.00 m above the water. Part A- Use energy conservation to find his speed just as he hits the water if he just holds his nose and drops in. Part B- Use energy conservation to find

*asked on November 24, 2017* -
## Physics

A spring is 16.2 cm long when it is lying on a table. One end is then attached to a hook and the other end is pulled by a force that increases to 28.0 N , causing the spring to stretch to a length of 19.0 cm . Part A What is the force constant of this

*asked on November 24, 2017* -
## maths

a car travels due south for 3km the due east for 8km. What is the true bearing of the car from the starting point?

*asked on February 11, 2017* -
## math

i have four digits i am more than 2500 i am less than 3000 my hundred digits id 6 my tens digit is one less than my hundreds digit my unit digit is 0 what number am i?

*asked on February 7, 2017* -
## english

II. By the end of Romeo and Juliet, Paris and Romeo, both of whom loved Juliet, are dead. The two characters, however, are very different. Write an essay comparing and contrasting the two men. The introduction of your essay should include an

*asked on March 14, 2016* -
## College Algebra

Solve the problem. Jon has 1162 points in his math class. He must have 86% of the 1500 points possible by the end of the term to receive credit for the class. What is the minimum number of additional points he must earn by the end of the term to receive

*asked on February 10, 2012* -
## chemistry

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) ¨ Ca(OH)2(s) In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is recovered. What is the percent

*asked on October 26, 2011* -
## calculus

Find the differential dy of the given function: y=xcosx would this just be dy=(cosx-xsinx)dx

*asked on November 8, 2010* -
## physics

A meter stick is pivoted at its 50-cm mark but does not balance because of non-uniformities in its material that cause its center of gravity to be displaced from its geometrical center. However, when masses of 150 and 200 grams are placed at the 10-cm and

*asked on June 25, 2010* -
## Stats

The Economic Policy Institute periodically issues reports on worker’s wages. The institute reported that mean wages for male college graduates were $37.39 per hour and for female college graduates were $27.83 per hour in 2017. Assume the standard

*asked on February 25, 2020* -
## biology

Which statements accurately describe the electron transport chain? Select all that apply. a: It produces carbon dioxide. b: It produces oxygen. c: It produces water and a high amount of ATP. d: It uses electrons released from NADH and FADH2.

*asked on January 8, 2020* -
## physics

ethys, one of Saturn's moons, travels in a circular orbit at a speed of 1.1x104 m/s. The mass of Saturn is 5.67x1026 kg. Calculate a) the orbital radius in kilometres.( i know how to do this part, the answer is 3.1x10^8 m) b) the orbital period in Earth

*asked on June 19, 2019* -
## Chemistry

Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. CO2, HCl, Al2S3, Cd, F2,Ag,O2,NaCl

*asked on July 18, 2017* -
## Alg

describe the end behavior of the graph of the polynomial function. Then evaluate the !@#$%^&ntion for x=-4, -3, -2, -1, 0, 1, 2, 3, 4. I'm confused on this. Help.

*asked on June 12, 2015* -
## Math - Limits/Derivatives

If a price-demand equation is solved for p, then price is expressed as p = g(x) and x becomes the independent variable. In this case, it can be shown that the elasticity of demand is given by E(x) = - [g(x) / xg'(x)]. Use the given price-demand equation to

*asked on October 19, 2013* -
## physics

An object moves along a circular path with a constant speed, |⃗vo|. (Semi Circle with point A on one side point B on the other. Looks like a 90 degree angle with points A and B on either side of the hypotenuse.) The average acceleration in going from A

*asked on November 8, 2012* -
## chemistry

iron+sulphur together are a mixture of small grains yellow and dark grey.Its chemical symbol is 'Fe + S'.When it reacts with oxygen they create a new chemical substance; Iron Sulphide. What do you put for 'explain the reaction using the Big Idea of Energy?

*asked on April 10, 2011* -
## science

What i the normal anatomy of sickle cell anemia?

*asked on September 23, 2008* -
## English Lit

I have to 'discuss the language' of some quotes which I have taken out of the text which I'm doing, but I'm not sure what to do. With this, do I have to talk about punctuation marks, specific words? Thanks!

*asked on September 23, 2008* -
## algebra

what happened when two fruit companies merged? this question is on a worksheet i have to do.

*asked on March 11, 2008* -
## biology

When a biochemical reaction occurs, what is the chemical substance that results? catalyst reactant substrate product

*asked on January 8, 2020* -
## Chemistry

How do we know when x is negligible when calculating equilibrium concentrations?

*asked on October 2, 2019* -
## Chemistry

1. The value of ΔH° for the reaction below is -6535 kJ. _________ kJ of heat are released in the combustion of 16.0 g C6H6 (l). 2C6H6 (l) + 15O2 (g) --> 12CO2 (g) + 6H20 (l) 3. Given the following reactions CaCO3 (s) --> CaO (s) + CO2 (g) ΔH = 178.1 kJ

*asked on October 31, 2017* -
## chemistry

The equilibrium constant for the reaction Cu3(PO4)2(s) 3 Cu2+(aq) + 2 PO43–(aq) is K = 1.40 x 10–37. Suppose that a beaker is filled to 1 L with a solution containing [Cu2+] = [PO43–] = 10.0 nM, and 300.0 g Cu3(PO4)2 . Which of the following

*asked on June 7, 2016* -
## Algebra 2

How would you write a polynomial function with rational coefficients so that P(x)=0 has the given roots? The given roots are -2,-2,3,5

*asked on February 14, 2016* -
## Personal fitness

There are three important benefits to the warm up session: (1 point) flexibility is increased, the muscle is pushed to its full potential, and the chance of dizziness or fainting caused by the pooling of blood in the extremities is reduced. aids in the

*asked on January 28, 2016* -
## Chemistry

If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under the same conditions? 2 CO (g) + O2 (g) ---> 2 CO2 (g)

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

1. Write a balanced molecular equation for the reaction of solid AgNO3 with aqueous NaCl. Be sure to include the correct number of coefficients and the state of the species (aq, s, l or g). 2. Write the total ionic equation for this reaction, including all

*asked on November 26, 2014* -
## Chemistry

Use standard enthalpies of formation to determine ΔHorxn for: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) Enter in kJ.

*asked on October 21, 2014* -
## Chem

An electrochemical cell based on the decomposition of H2O2 can be constructed based on the half-reactions in the table below. Half-Reaction | Standard Reduction Potential, E° H2O2+ 2e- => 2 OH- | 0.88 V O2+ 2 H2O + 2e- => H2O + 2 OH- | -0.15 V (d)

*asked on April 23, 2013* -
## math

this was emily's full day yesterday: she spent 8 hours sleeping, 1 hour in the shower, 6 hours in class, 2 hours eating and snacking, 4 hours studying, and 3 hiurs watching tv. What percent of her day was spent studying.

*asked on March 6, 2013* -
## math

a movie theater has 250 seats. One hundred tickets have been sold. What percent of fhe theater is filled?

*asked on March 6, 2013* -
## Physic

A block (mass 2.4 kg) is hanging from a massless cord that is wrapped around a pulley -3 2 (moment of inertia of the pulley = 1.3 x 10 kg·m ), as the drawing shows. Initially the pulley is prevented from rotating and the block is stationary. Then, the

*asked on February 4, 2013* -
## HEALTH HELP PLEASE!!

Fats help maintain your cell membranes. (1 point) True False 12. Your body does not use energy when you sleep. (1 point) True False 13. People with anorexia nervosa eat large amounts of food and then purge. (1 point) True False 14. Your body image is the

*asked on December 5, 2012* -
## Physical Science

The conversion of water to ice is considered a physical change, whereas the conversion of iron to rust is considered a chemical change. Why?

*asked on April 19, 2012* -
## Precalculus

2-3cosx=5+3cosx 0 degrees is less than or equal to x less than or equal to 180 degrees Can you please show me step by step in detail. Please do not skip a step. Thanks!

*asked on August 6, 2011* -
## physics

A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a

*asked on April 6, 2011* -
## english

Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?

*asked on April 6, 2011* -
## Chemistry

I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And

*asked on April 6, 2011* -
## Chemistry

I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And

*asked on April 6, 2011* -
## physics

a 1 kg mass is attached to a spring hanging vertically and hangs at rest in the equilibrium position. the spring constant of the spring is 1 n/cm. the mass is pulled downward 2 cm and released. what is the speed of the mass when it is 1 cm above the point

*asked on March 23, 2011* -
## Chemistry

How many moles of HCl are present in a 50mL 3M solution of HCl?

*asked on January 12, 2011* -
## geometry

Triangle ABC has the following angle measures. Angle A = 44. Angle B = 4x. Angle C = 2x + 16. Find the measure of angle C.

*asked on December 16, 2010* -
## Chemistry

For each reaction, complete and balance the equation and give the net ionic equation. a) KOH(aq)+ZnCl2(aq)-> KCl2+ZnOH The second half of the equation is how i had done on the exam but he said its not balanced. How do I balance this? How would it look. I

*asked on November 10, 2010* -
## physics

A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.15 m. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 N. a) Find the speed of the bucket. b)How fast must the bucket move at the top of the circle

*asked on November 4, 2010* -
## algebra

A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?

*asked on August 12, 2010*