# Kelly

Popular questions and responses by Kelly-
## Algebra

Which equation represents "fifteen more than r is sixty-one? a. r + 61 = 15 b. r + 15 = 61 c. r - 15 = 61 d. r + 61 = 15 I think its b or c because b is 46 and c is 76

*asked on August 26, 2015* -
## College Chemistry

I balanced the equation: HBr(aq) +NH3(aq)->NH4Br I need to find the ionic equation and the net ionic equation

*asked on October 3, 2010* -
## math

For his exercise today, Josh plans to both run and swim. Let r be the number of laps he runs and let s be the number of laps he swims. Each lap he runs takes him 4 minutes, and each lap he swims takes him 3 minutes. He wants to exercise for at least 30

*asked on September 25, 2016* -
## Calculus

The equation of motion of a particle is s = t3 − 12t, where s is in meters and t is in seconds. For the velocity function, I got v(t)=3t^2-12 and for acceleration, a(t)=6t. The final question is: Find the acceleration when the velocity is 0. How do I do

*asked on September 29, 2015* -
## Redox Reaction

In an acidic solution, manganese(II) ion is oxidized to permanganate ion by bismuthate ion, BiO3-. In the reaction, BiO3- is reduced to Bi3+. How many milligrams of NaBiO3 are needed to oxidize the manganese in 30.2 mg of manganese(II) sulfate?

*asked on April 19, 2015* -
## chemistry

Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, NH4Br, and aqueous lead(II) acetate, Pb(C2H3O2). Enter the balanced net ionic equation, including phases, for this reaction.

*asked on October 23, 2012* -
## chemistry

Will sodium sulfide and iron II sulfate form a precipitate? if so what would the reaction look like?

*asked on December 12, 2010* -
## Mathematics

On a certain exam, Tony corrected 10 papers and found the mean for his group to be 80. Alice corrected the remaining 50 papers and found that the mean for her group was 90. What is the mean of the combined group of 60 students?

*asked on July 25, 2020* -
## chemistry

3.0g of a mixture of potassium carbonate and potassium chloride were dissolved in a 250cm3 standard flask. 25cm3 of this solution required 40.00cm3 of 0.01M HCl for neutralization. What is the percentage by weight of K2CO3 in the mixture? (K = 39, O = 16,

*asked on June 28, 2018* -
## Stats.

Find the standard normal area for each of the following, showing your reasoning clearly. a. P(1.22

*asked on April 11, 2014* -
## Calculus Practice Problems

A filter filled with liquid is in the shape of a vertex-down cone with a height of 12 inches and a diameter of 18 inches at its open (upper) end. If the liquid drips out the bottom of the filter at the constant rate of 3 cubic inches per second, how fast

*asked on October 16, 2013* -
## chemistry

Find the concentration of Cu+ in equilibrium with CuBr(s) and 0.10 M Br-.

*asked on September 11, 2011* -
## CAL

Consider the function y = 3x5 – 25x3 + 60x + 1. Find the absolute maximum value of y on the interval [0, 3]. What do you get I got -322, but I'm not 100% on how to find the absolute maximum.. so is that right?

*asked on December 9, 2014* -
## Math

A rock is thrown upward with a velocity of 12 meters per sec from the top of a 25 meter high cliff and it misses on it's way back down. When will the rock be 3 meters from water

*asked on September 1, 2015* -
## College Chemistry-Please help me

I need to find the ionic equation of: 3Ba(OH)2(aq)+2H3PO4(aq)->Ba3(PO4)2+6H20(l) I'm totally lost on this question

*asked on October 4, 2010* -
## MATH

What is the estimated perimeter of an ellipse if the major axis has a length of 15 ft and the minor axis has a length of 7.5 ft?

*asked on October 7, 2016* -
## Chemistry

Write chemical formulas for the compounds formed by the following positive and negative ions: Ba2+ and NO3-, Al3+ and Co3, and K+ and PO43-

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

You need to put carpet in a rectangular room that measures 12 feet by 17 feet at a cost of $27.50 per square yard. Assuming that you can buy precisely the amount of carpet you need, how much will the carpet for the room cost? I came up with $1870.00 but

*asked on October 27, 2013* -
## physics

The amplitude of an oscillator decreases to 69.0% of its initial value in 15.5s. a) What is the value of the time constant?

*asked on December 1, 2009* -
## Statistics

The Weight of a small Starbucks coffee is normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. a. highest 10% b. highest 50% c. highest 5% D. highest 80% e.

*asked on April 11, 2014* -
## Physics

A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 32 N. The coefficient of static friction between his

*asked on February 15, 2010* -
## Math- Algebra

A mother wants to invest $15000 for her children's education. She invest a portion of the money in a bank certificate of deposit which earns 4 percent and the remainder in a savings bond which earns 7 percent. If the total interest earned after a year is

*asked on February 5, 2018* -
## Algebra

Joylin receives a $50 gift card for the local movie theater for her birthday. She uses the card to purchase tickets and snacks for her family. If Joylin spends $6 more on tickets than she does on snacks, how much does Joylin spend on tickets?

*asked on July 3, 2014* -
## math

The distance between city A and city B is 500 miles. On a certain wall map, this is represented by a length of 2.3 feet. On the map, how many feet would there be between city C and city D, two cities that are actually 800 miles apart? On the map, city C

*asked on September 7, 2012* -
## chemistry

how would you prepare 1.00 L of 0.50 M solution of NiCl2 from the salt nicl2·6H2O? thanks :)

*asked on August 24, 2010* -
## chemistry

an aspirin tablet contains 5.00X10^2 mg of active ingredient. how many grams of ap of active ingredient does it contain

*asked on July 5, 2010* -
## Physics

A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 220N and breaks as the elevator accelerates. What was the elevator's minimum acceleration (magnintude and direction)? Please show me how to do

*asked on January 2, 2007* -
## Accounts

Assuming a proprietorship, partnership, and corporation earns equal amount of income and it is distributed evenly among owners, the amount collected by government toward tax will be: Select one: a. highest for proprietorship. b. highest for corporation. c.

*asked on April 28, 2018* -
## Math

Hi can someone please help me? A recent study gave the information shown in the table about ages of children receiving toys. The percentages represent all toys sold. Age (years) Percentage of Toys 2 and under 3-5 6-9 10-12 13 and over 17% 19% 24% 13% 27%

*asked on December 14, 2016* -
## Calc

The maker of an automobile advertises that it takes 13 seconds to accelerate from 25 kilometers per hour to 90 kilometers per hour. Assuming constant acceleration, compute the following. The acceleration in m/s^2 The distance the car travels during the 13

*asked on November 18, 2016* -
## college algebra

The height of a projectile fired upward is given by the formula s = v0t – 16t2, where s is the height, v0 is the initial velocity and t is the time. Find the times at which a projectile with an initial velocity of 128 ft/s will be 144 ft above the

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

Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic force exerted on the charge q by

*asked on March 29, 2012* -
## algebra

If there are 8 red disks numbered 1 through 8, and 6 yellow disks numbered 9 through 14 placed in a box. Find the probability of selecting a red disk numbered 3.

*asked on November 14, 2010* -
## Math

PQR ~ STU. PQ = 12cm and ST = 9cm. The area of STU is 72 cm². Find the area of PQR.

*asked on July 28, 2010* -
## Chemistry

Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

*asked on June 7, 2010* -
## Math

name the 2 digit multiple of 8 who digits add up to 10

*asked on June 10, 2008* -
## Algebra

The length of a rectangle is twice the width. The area is 578 yd.^2. Find the length and width.

*asked on November 21, 2011* -
## math helper plese

2 isosceles triangles have the same height. The slopes of the sides of triangle A are double the slopes of the corresponding sides of triangle B. How do the lengths of their bases compare? A. The base of A is quadruple that of B. The base of A is double

*asked on January 17, 2011* -
## chemistry

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 0.4 mg Hg/mL, what is the total

*asked on September 10, 2010* -
## English

Analyze the childhood world of Jem, Scout, and Dill and their relationship with Boo Radley in Part One? Help me?

*asked on October 18, 2008* -
## Math

The city council gave a questionnaire to its citizens, asking them to rank their priorities for next year's budget. People were asked to rank the following four choices: (P)olice, (R)oads, (S)chools, and (T)rash removal. The results are summarized in the

*asked on April 3, 2017* -
## Calc

Use upper and lower sums to approximate the area of the region using the given number of subintervals (of equal width). (Round your answers to three decimal places.) y = 5/x

*asked on October 29, 2016* -
## Math

if kelly gave 1/3 of a pizza to holly and 1/5 to diane how much did she have left

*asked on April 2, 2013* -
## physics

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What

*asked on April 8, 2012* -
## Algebra

The flower garden has the shape of a right triangle. 5ft of a perennial border forms the hypotenuse of the triangle, and one leg is 1ft longer than the other leg.Find the lengths of the legs.

*asked on November 9, 2011* -
## Physics

Two students are on a balcony 19.6 m above the street. One student throws a ball (ball 1) vertically downward at 15.8 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the

*asked on May 13, 2011* -
## Math

My son's math homework asks him to find each product by factoring the tens. 6 x 2, 6 x 20 and 60 x 20. There is no explaination in the book..can you help?

*asked on January 4, 2011* -
## College Chemistry

How many milliliters of a 0.200M AgNO3 solution are required to preccipitate most of the Cl^- ions from a solution containing 0.855 g of NaCl?

*asked on September 27, 2010* -
## physics

Using dimensional analysis, which one of the following equations is dimensionally correct? ( a → m/s2, v → m/s, x → m , t → s)

*asked on September 17, 2010* -
## Chemistry

Which pair of compounds will form a solution?Benzene (C6H6) and hexane (C6H14)Na2SO4 and benzene (C6H6)NaCl and hexane (C6H14)H2O and CCl4More than one of the combinations above will form solutions.

*asked on April 19, 2016* -
## Chemistry

Consider the chemical equation. 2H2 + O2 -> 2H2O What is the percent yield of H2O if 87.0 g of H2O is produced by combining 95.0 g of O2 and 11.0 g of H2? a 56.5% b 59.0% c 88.5% d 99.7%

*asked on March 23, 2016* -
## Algebra

Find the domain of the function. (Write your answer using interval notation.) sqrt(x)/ (4x^2 + 3x − 1) If you set the bottom equal to zero, I got that x can't be -1 or 1/4. But I'm not sure if that's right, or how to write the answer in interval

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

Acetylene(C2H2) torches are used in welding. How much heat (in kJ) evolves when 2.0L of C2H2 (d=1.0967kg/m3) is mixed with a stoichiometric amount of oxygen gas? The combustion reaction is C2H2(g)+52O2(g)→2CO2(g)+H2O(l), ΔH∘=−1299.5kJ

*asked on March 24, 2014* -
## college chemistry

How many total moles of ions are released when the following sample dissolves completely in water: 5.15x10^-3 g Ca(NO3)2

*asked on September 26, 2010* -
## Chemistry

What volume of 0.123 M AgNO3(aq) is needed to form 0.657 g of AgCl(s)? 0.564 mL. 18.6 mL. 37.2 mL. 1.77 L.

*asked on June 12, 2010* -
## business math

translate : nine times the product of three and a number

*asked on September 18, 2017* -
## Chemistry

In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction?

*asked on July 6, 2016* -
## Calculus

Find the limit as x approaches infinity. sqrt(81x^2 + x)− 9x. I've worked this two different ways and have gotten 0 and 1/9, neither of which is the right answer according to the homework system??

*asked on September 14, 2015* -
## Chemistry

Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating that is based on a comparison with the combustion properties of isooctane. Gasoline usually contains an isomer of isooctane called tetramethylbutane (C8H18), which has an

*asked on July 9, 2013* -
## Chemistry

the reaction of 6.62g of carbon with excess oxygen yields 13.40g of CO2. what is the percent yield of this reaction

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

A 1500kg car is approaching the hill shown in the figure at 15.0 m/s when it suddenly runs out of gas. Part A What is the car's speed after coasting down the other side?

*asked on November 26, 2012* -
## japenese

what does furasosu mean?

*asked on May 22, 2010* -
## Statistics

Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. A recent

*asked on November 28, 2009* -
## World Liturature

Explain the significance of the title Quality by John Galsworthy

*asked on November 15, 2009* -
## MATH

If you roll a 6 sided dice 6 times, what is the best prediction possible for the number of times you will roll a two? A) 6 B) 1 C) 2 D) 0

*asked on April 20, 2016* -
## English

Which of the following did NOT contribute to the Harlem Renaissance? A.The Emancipation Proclamation. B. By 1930, the population of African Americans in Harlem grew to over 200,000.

*asked on February 26, 2016* -
## Algebra

I have another one What is the value of 42-2(3x5+1)? I thought you worked the parentheses first which would be 16, then subtract 42 from 2 and you get 39, you would then multiply 16x39 and you would get 624. But the answers I have to choose from are 8, 1,

*asked on August 26, 2015* -
## Physics

A watermelon seed has the following coordinates: x = -8.7 m, y = 1.6 m, and z = 0 m. Find its position vector as (a) a magnitude and (b) an angle relative to the positive direction of the x axis. If the seed is moved to the xyz coordinates ( 3.4 m, 0 m, 0

*asked on February 2, 2015* -
## Science

List these from broadest to specific Organism Ecosystem Population Community Where would ecosystem fall Population, community, organism

*asked on November 10, 2014* -
## Calculus Area between curves

Consider the area between the graphs x+6y=8 and x+8=y2. This area can be computed in two different ways using integrals First of all it can be computed as a sum of two integrals where a= , b=, c= and f(x)= g(x)= I found a, but not b or c. I can't seem to

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

Calculate the theoretical mass percent of oxygen in KClO3. here is the my mass percentage of 02 25gKCl03/30.0gKCl03=0.61%02.

*asked on September 7, 2013* -
## Chemistry

a .6800g sample of carboxylic acid is burned in oxygen, producing 1.212 g of CO2 and .4991 g of H2O. determine the empirical formula of the carboxylic acid

*asked on May 18, 2013* -
## English

Choose the correct form for each phrase. 1. the budget for this month this months budget this month's budget this months' budget this months's budget 2. the schedule of the doctor the doctor's schedule the doctors schedule the doctors' schedule the

*asked on May 16, 2013* -
## Physical Science

Find the change in the force of gravity between two planets when their masses remain the same but the distance between them is increased by 10 times.

*asked on February 27, 2013* -
## statistics

A food snack manu. samples 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is .15, find the 95% confidence interval estimate for the true mean.

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

a mouse pushes a piece of cheese with a mass of 6.4 g for a distance of 75 cm over the frictionless surface of an air hockey table. He exerts a constant 0.5 N force as he does so. If the cheese starts from rest, what is it's final velocity?

*asked on December 5, 2012* -
## math

The sum of the measures of the angles of any triangle is 180 degrees. In triangle abc, angles a and b have the same measure, while the measure of angle c is 78 degrees larger than each of a and b. What are the measures of the three angles? angle a is

*asked on September 7, 2012* -
## Algebra

A farmer decides to enclose a rectangular garden, using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 100 ft of fence? What should the dimensions of the garden be to this given area? The maximum

*asked on November 21, 2011* -
## physics

A shell is fired from a gun with a muzzle velocity of 466m/s at an angle of 57.4 degrees with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment, whose speed immediately after the explosion is

*asked on October 10, 2011* -
## college physics

The energy difference between states A and B is twice the energy difference between states B and C (C > B > A). In a transition (quantum jump) from C to B, an electron emits a photon of wavelength 300 nm. What is the wavelength emitted when the photon

*asked on April 26, 2010* -
## Physics

Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 10.0 cm that has a

*asked on March 30, 2010* -
## Algebra

Find the sum of the first four terms of the geometric sequence with a = -3 and r = 3. I have NO idea how to attempt to solve this. I do not want an answer just instuctions. Thanks

*asked on January 11, 2010* -
## Math

What percent of students in the college are history majors (to the nearest tenth of a percent)? 200 students major in math 300 students major in history 400 major in english 150 major in science 175 major in other Total number of students divided by the

*asked on October 21, 2009* -
## Word Problem

Use a proportion to solve the problem. On Anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If her rear wheel turns 994 times per mile, how many times does she turn the pedal in one mile? Express your answer as an

*asked on October 21, 2009* -
## chemistry-check over work

2C6H5Cl(chlorobenzene)+C2HOCl3(chloral)=C14H9Cl5(DDT)+H2O in a gov. lab 1142 g of chlorobenzene is reacted with 485 g of chloral. a). what mass of DDT is formed? 1166.179 g of C14H9Cl5 b). which reactant is limiting?C2HOCl3 which reactant is in

*asked on March 7, 2008* -
## accounting

identify three external users of accounting information and indicate two questions they might seek to answer through accounting information.

*asked on February 15, 2008* -
## physics

what is the final temperature when a 3.0 kg gold bar at 99 degrees is dropped into a .22 kg of water at 25 degrees

*asked on February 5, 2008* -
## Calculus

How many 2-digit numbers can be formed using the digits 1,2,3,4,5,6,7,8,9 and 0? No digit can be used more than once

*asked on December 10, 2007* -
## calculus

Use the even odd properties to find the exact value of the expression. It may be helpful to draw the unit circle graph sin(-pi)

*asked on November 18, 2007* -
## Math

Suppose that there are two types of tickets to a show Advanced and same day. The combined cost of one advance ticket and one same day ticket is 55. for one performance 25 advanced tickets and 40 same day tickets were sold the total amount paid for the

*asked on April 5, 2020* -
## English

As a senior prefect, write a speech on your principal senth forth party.

*asked on February 1, 2020* -
## Math

Write 1+iroot 3 and 1-iroot3 in trig form and simplify (1+iroot3)^9 +(1-iroot3)^9 in x+iy form.

*asked on November 20, 2019* -
## chemistry

When 3,3-dimethyl-2-butanone is reduced, the product is a. 3,3-dimethyl-2-butanene b. 3,3-dimethyl-2-butana c.3,3-dimethyl-2-butanol d. 3,3-dimethyl-2-butananoic acid

*asked on March 29, 2018* -
## math

solve log9(x-y)=log3(x+y

*asked on January 17, 2018* -
## Chemistry

If you start with 4.00 moles of C3H8 (propane) and 4.00 moles of O2, how many moles of carbon dioxide can be produced?

*asked on July 29, 2016* -
## math

How many 1oz bottles will this solution fill.

*asked on June 15, 2016* -
## math

What is the 20th term of the sequence that begins with −2, 4, -8, 16 ANSWER CHOICES: A)2,097,152 B)524,288 C)-524,288 D)1,048,576

*asked on May 17, 2016* -
## english

Which of the following did NOT contribute to the Harlem Renaissance? A.The Emancipation Proclamation. B. By 1930, the population of African Americans in Harlem grew to over 200,000. C.F. Scott Fitzgerald

*asked on February 26, 2016* -
## math(epidemiology)

A population of 100 healthy men was followed for the development of prostate cancer. After being followed for 5 years, 20 men developed prostate cancer. Ten other men were followed for 1 year and then were lost to follow-up. The remaining men who never

*asked on January 18, 2016* -
## Intro to Undergraduate Studies

Does the sentences below need to be cited? Why or why not? Bill Gates is the founder of Microsoft. Students who studied two hours a day did 25% better in the final exam.

*asked on October 6, 2015*