# Barb

Popular questions and responses by Barb-
## 4th grade math

Barb is making a bead necklace. She strings 1 white bead, then 3 blue beads, then 1 white bead, and so on. Write the numbers for the first eight beads that are white. What is the rule for the pattern. Please help me explain this to my 4th grader

*asked on January 14, 2013* -
## Math

Write a list of steps that are needed to find the measure of ∠B. A line segment ACD is shown with triangle ABC drawn so that AC is the base of the triangle. Angle BAC is labeled with 72 degree sign, and angle BCD is labeled with 113 degree sign.

*asked on February 7, 2018* -
## Algebra

You plan to build four identical rectangular sheep pens in a row. Each adjacent pair of pens share a fence between them. You have a total of 368 feet of fence to use. Find the dimension of each pen such that you can enclose the maximum area. 5w+8L=368

*asked on March 12, 2016* -
## algebra

A cup of coffee is heated to 180°F and placed in a room that maintains a temperature of 65°F. The temperature of the coffee after t minutes is given by T(t) = 65 + 115e^−0.042t.(a) Find the temperature, to the nearest degree, of the coffee 10 minutes

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

A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54; at the third, he quadrupled his money and spent $72, and then had $48 left. How much money had he at the start?

*asked on April 3, 2013* -
## scientist

A techer pushed a 98 newton desk across a floor for a distance of 5 meters she exerted a horizontal force of 20 newtons. how much work was done?

*asked on October 25, 2009* -
## Math

Show that z/pq = 1/pr + 1/qr, where r = (p + q)/z Finding decmpositions of a fraction into 2 units as indicated on a paprus written in Greek.

*asked on January 31, 2013* -
## Math Please Help

A pizza box top with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides. If the area of the base is to 144 in^2, what piece of cardboard should

*asked on January 13, 2013* -
## Math

Two boats leave a dock at the same time. One heads due east at 20 mph, and one heads due south at 15 mph. How far apart are the two boats after 45 minutes have elapsed?

*asked on February 10, 2013* -
## math

graph the equation by plotting the points: 35-5y=0 i know how to put the solutions on the graph. i am stuck on this equation. i think x=0 but i can not figure for y. please help me and show me the steps to solve this.

*asked on August 19, 2010* -
## calc

The half-life of polonium is 139 days, but your sample will not be useful to you after 95 % of the radioactive nuclei present on the day the sample arrives has disintegrated. For about how many days after the sample arrives will you be able to use the

*asked on April 10, 2007* -
## Algebra

Triangles ABC and DEF are similar. Find the area of triangle ABC. Round your answer to the nearest tenth. Triangle ABC has a base of 12m. Triangle DEF has a base of 18m and height of 12m

*asked on May 7, 2014* -
## Science

If a black coat that is coat dominant over a red coat but is heterozygousfor coat color and breeds with a red cow, what percentage of their offsprings would be black coat

*asked on December 19, 2017* -
## Statistics

The scores on a math test are normally distributed. if the mean is 72 and the standard deviation is six, what is the range of 98% of the scores?

*asked on July 22, 2019* -
## Chemistry

A scuba diver 60 ft below the ocean surface inhales 55.0 mL of compressed air from a scuba tank at an initial pressure of 2.60 atm and temperature of 8 ∘C. What is the final pressure of air, in atmo-spheres, in the lungs when the gas expands to 155.0 mL

*asked on March 24, 2016* -
## legal writing 2

i am suppose to write 2 legal memorandum sally bright v. john bright and john bright v. sally bright child custody case. mother wants to take minor child out of the country.

*asked on May 4, 2013* -
## science

a 49 newton rockis lifted 2meters in 5 seconds How much work is done? b what power is used?

*asked on October 24, 2009* -
## algebra

Flying with the wind, a plane traveled 570 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5 hours. Find the rate of the plane in calm air and the rate of the wind. Rate of plane ______mph Rate of wind ________mph

*asked on December 6, 2014* -
## Math

One angle of a triangle measures 105degrees and another angle measures 32degrees what is the measurement of the third angle

*asked on April 29, 2015* -
## legal writing 2

legal writing project 2 sally bright v. john bright

*asked on May 4, 2013* -
## Math--Please help

Prove that no isosceles right triangle exists whose sides are integers.

*asked on February 2, 2013* -
## algebra

The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 48 feet is a function of time in seconds given by h(t) = −16t2 + 32t + 48. (a) Find the maximum height of the projectile. ft (b) Find the time t

*asked on December 12, 2014* -
## science

a teacher pushed a 98 newton desk acrosss a floor for a distance of 5 meters she exerted a horizontal force of 20 newton How much work was done?

*asked on October 24, 2009* -
## Algebra

Find the payment necessary to amortize a 4% loan of $900.00 compounded quarterly , with 11 quarterly payments?

*asked on October 23, 2011* -
## algebra

The function A(t) = 200e^-0.014t gives the amount of medication, in milligrams, in a patient's bloodstream t minutes after the medication has been injected into the patient's bloodstream. (a) Find the amount of medication, to the nearest milligram, in the

*asked on November 17, 2014* -
## 8th grade

a student wo weighs 500 newtons climbed the stairs from the first floor to the third floor 15 meters above in 20 seconds A.how much work did she do? B.what was her power

*asked on October 25, 2009* -
## science

a womans lifts a 300 newton child a distance of 1.5 meters and carries her forward for 6.5meters. how much work does the woman do in lifting the child? b.how much work does the child do?

*asked on October 24, 2009* -
## algebra

A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7) on the growth of a bacteria culture. The table below gives the measurements of different cultures, in thousands of bacteria,

*asked on December 6, 2014* -
## English

I have an sentence. Beth lost her glasses at the library. I have to replace HER GLASSES with a pronoun Thank you for using the Jiskha Homework Help Forum. You need a direct object pronoun = them.

*asked on February 20, 2007* -
## math

Determine the intersection X ∩ Y. Express the in interval notation. X = {x } and Y = {x

*asked on February 15, 2019* -
## sci/275-environmental

What are the pros and cons of using Malathion pesticide????

*asked on January 14, 2010* -
## algebra

The fuel efficiency for a certain midsize car is given by E(v)= -0.016v^2+1.408v+3.8, where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. What speed will yield the maximum fuel efficiency? _______mph. What is the

*asked on December 6, 2014* -
## algebra

Solve the inequality graph solution 8| x+3/4|-1/2, -5/32

*asked on February 25, 2014* -
## finance

The Landis Corporation had 2008 sales of $100 million. The balance sheet items that vary directly with sales and the profit margin are as follows: Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5% Accounts receivable. . . . . . . .

*asked on August 3, 2009* -
## Math

One number is 10 less than twice a second number. Find a pair of such numbers so that their product is as small as possible. These two numbers are_ and _. (Use a comma to separate your numbers.) The smallest possible product is_. The number are NOT 5,15 or

*asked on March 12, 2016* -
## Liature

Identify Parts of Speech in A city must be planned Carefully, or people will not want to live in it.

*asked on September 1, 2016* -
## chemistry

In the experiment you have added 50.0 mL of Ni(H2O)6 2+ to the calorimeter. To this you add 5.0 mL of ethlylenediamine and measure the change in temperature of the solution as the reaction proceeds. The temperature increases by 3.4 oC. Calculate the

*asked on April 9, 2013* -
## child care management

One reason early childhood education centers have become increasingly important providers of health education is that A.schools are more sanitary than 70percent of home environments. B. younger, healthier teachers and classroom aides have emereged. c.

*asked on March 10, 2010* -
## math

the quotient of n and 5 is 4 times n find equation

*asked on January 17, 2013* -
## math

the water in leroy's and jerod's fish tank has evaporated so it was about 5/8 inch below the leverit should be.they added water and the water level went up about 3/4 inch.did the water level end up above or below where it should be? answer

*asked on March 9, 2012* -
## 7th grade

49 is 77% of what number?

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

make an aqueous solution of 0.176 M copper(II) chloride for an experiment in lab, using a 300 mL volumetric flask. How much solid copper(II) chloride should you add

*asked on November 22, 2015* -
## Math

What is the word form for 1.555?

*asked on September 15, 2010* -
## Math - Please Help

The surface area of a right circular cylinder is 1200 cm^2 . If the height of the cylinder is twice its diameter, find the dimensionsof the cylinder. I know th formula for SA is SA = 2pir^2 + 2pirh I know h = 2d. I know r = 1/2 d What is h in relations to

*asked on February 18, 2013* -
## Math

What is the reciprocal of .26

*asked on October 31, 2012* -
## chenistry

how many calories are required to melt a 135.0g sample of ice at 0.0 c

*asked on September 5, 2012* -
## algebra

Lead shielding is used to contain radiation. The percentage of a certain radiation that can penetrate x millimeters of lead shielding is given by I(x) = 100e^−1.5x. What percentage of radiation, to the nearest tenth of a percent, will penetrate a lead

*asked on November 18, 2014* -
## Math

A pizza box with a square base is to be made rom a rectangular sheet of cardborad by cutting six 1-inch squares from the corners and the middle sections and folding up the sides. If area of the base is to be 144 in^2, what piece of cardboard should be

*asked on January 12, 2013* -
## algebra

The number of bass in a lake is given by P(t) = 2800/1+6e^-0.05t where t is the number of months that have passed since the lake was stocked with bass. (a) How many bass were in the lake immediately after it was stocked? ? bass (b) How many bass were in

*asked on November 17, 2014* -
## Math - Please Help

A chunk of oak firewood has a mass of about 2.85 kg and has a volume of 4100 cm^3. Determine the density of oak in g/cm^3.

*asked on February 17, 2013* -
## accounting

what is the total liabilites and the owners equity in the balance sheet you prepared in exam figure 4? a. $,5,906.54?

*asked on March 29, 2011* -
## Math

30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be shared equally. How may this be done?

*asked on April 3, 2013* -
## Math--Please Help

A traverse with five sides has interior angles with the following measures: 121deg 45 min: 118 deg 25 min; 87 deg 32 min; 98deg 34min, and 113 deg 54 min. Does the traverse close? If not, determne the error in the traverse.

*asked on February 4, 2013* -
## Precalc

Find the vertex and focus of the parabola. (x^2)-(24y) = 0

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

can i get step by step for this equation? 3x + 2y =24 what is the y intercept and what is the x intercept? I need the ordered pairs

*asked on August 22, 2010* -
## math

how do you know when an equation has infinate many solutions and how do you know if an equation has no solutions? The second part of this question I get. If you work an equation and come up with 5=3 this is not a solution. Is that part right? I guess I do

*asked on August 6, 2010* -
## Math

A carpenter agrees to work under the conditions that he is to be paid $5.50 every day he works, but must pay $6.60 every day he does not work. At the end of 30 days he finds he has paid out as much as he has received. How may days did he work?

*asked on April 3, 2013* -
## english

Is the word program a v/cv or double constanant?

*asked on September 16, 2010* -
## Math

Prove: If the hypotenuse and an acute angle of one triangle are congruent respectively to the hypotenuse and an acute angle of another right triangle, then the two triangles are congruent.

*asked on March 26, 2013* -
## Math-Please Help

While rummaging, Bernard found a figurine that he believed to be made out of silver. To test his guess, he looked up the density of silver and found it to be 10.5g/cm^3. The figure had a mass of 149 g. To determine its volume, he dropped it into a

*asked on February 18, 2013* -
## science

• Explain the flow of energy through the ecosystem using specific plant and animal examples. Correctly use the following terms in your example and explanation; primary producer, primary consumer, secondary consumer, tertiary consumer, trophic level. •

*asked on January 19, 2010* -
## Chemistry

How many moles of Carbon dioxide are produced from the decompostion of 1.45 grams of Aluminum Carbonate?

*asked on February 24, 2008* -
## trig

angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 31°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your

*asked on November 28, 2012* -
## Chemistry

Acetic acid has a pK of 4.8. How many mL of 0.1M acetic acid and 0.1M of sodium acetate are required to prepare 1 liter of 0.1M buffer solution having a pH of 5.8?

*asked on September 14, 2011* -
## math

please solve: 8y - 12 < 7y - 7 { y y < ? there is supposed to be a straight line between the y and y

*asked on August 22, 2010* -
## chemistry

How many grams of potassium sulfide are produced from the reaction of 1.23 moles of potassium with sulfur?

*asked on February 24, 2008* -
## algebra

The monthly income I, in dollars, from a new product is given by I(t) = 81000 − 45000e^-0.005t where t is the time, in months, since the product was first put on the market. (Round your answers to the nearest dollar amount.) (a) What was the monthly

*asked on November 17, 2014* -
## calculus

find an antiderivative F(x) of f(x)=11x-sqrt(x)

*asked on December 2, 2011* -
## Social Studies

How did the French and Indian War change the British relationship with its American Colonies?

*asked on May 29, 2009* -
## Engish

I have a book on finding what you need for critical thinking as for as questions and answers please if I can help let me know. Critical thinking happens to be one of my courses.

*asked on May 15, 2008* -
## Earth Science

What commonly used metal is extracted from hematite? There are a number or iron ores. Hematite is one of them.

*asked on October 3, 2006* -
## chemistry

what happens to water at 100 degrees celsius as pressure is increased fro 0.8 atm to 1.2 atm?

*asked on July 19, 2016* -
## geometry

if a scale factor of four is used, the points in the image will be eight times as far from the origin as at he pre-image points true or false

*asked on June 28, 2013* -
## Math

The area of a rectangle is 12 and the width is 3/4 the length. What are the dimensions?

*asked on January 31, 2013* -
## PreCalc

6.Given -2i is a root, determine all other roots of x^4-10x^3+42x^2-88x+80. A. x= +/- 4, 2i B.x= -2, +/- 4i C.x= -4, +/- 2 D.x= -4, 2i E.x= +/- 4, 2 Please help, I do not understand where to begin.

*asked on September 22, 2010* -
## calc

2- The earth’s atmospheric pressure p is often modeled by assuming that the rate dpdhat Which p changes with the altitude above sea level is proportional to hp. Suppose that the pressure at sea level is 1013 millibars (about 14.7 pounds per square inch)

*asked on April 10, 2007* -
## Math

One number is 10 less than twice a second number.Find a pair of such numbers so that their product is as small as possible. x-10 2x 2x(x-10) 2x^2-20x -(-20/2(2))=5 2(5)^2-20(5) 50-100=-50 I think I am really lost

*asked on March 11, 2016* -
## Math--Please Help

A pizza box with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections folding up the sides. If the area of the base is to be 144 in^2, what size piece of cardboard should

*asked on January 13, 2013* -
## PLEASE HELP ME MATH

I only have 1 hour to get this question answered. Thank you in advance. I need a quadratic equation in the variable x given the solutions: -7 sqrt 7, and 7 sqrt 7 This needs to be in the standard form of ax^2+bx+c=0. Can someone please help me with

*asked on November 12, 2010* -
## math

write an equation of the line containing the given point and parallel to the given line; use y=mx+b form; (5,8) x+4y=7 i keep getting this wrong. Can someone show me how to work this? Thank you so much

*asked on September 3, 2010* -
## MAT115

Identify the base in the following application: The sales tax rate is 8%. If you pay a tax of $2.50 on an item, what is the selling price. I don't know what the base is or how to solve the problem.

*asked on July 22, 2010* -
## science

4. Assignment: Photosynthesis and Cellular Respiration Powerpoint Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multicellular, the exchange of energy and the formation of products

*asked on June 12, 2010* -
## algebra

The function p(d)=1+d/33, gives the pressure, in atmospheres (atm), at a depth d in the sea (d is in feet). Note that p(0)=1 atm, p(32)=2 an so on. Find the pressure at 200 feet. Type an integer or simplified fraction.

*asked on October 12, 2009* -
## Algebra

One number is 10 less than twice a second number. Find a pair of such numbers so that their product is as small as possible. I came up with 15 and 5 and those are incorrect

*asked on March 11, 2016* -
## Math--Please Help

A pizza bx with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch square from the corners and the middle sections and folding up the sides. If the area of the base is to be 144 in^2, what size piece of cardboard should

*asked on January 13, 2013* -
## pre algebra

how do u know the answers shown on the computer for What do they call the international hoola hoop championships?are correct

*asked on May 3, 2012* -
## math

jared wants to save $100 to buy a tennis racket.he saves $8 each week,and his mother gives him an extra $0.25 for each dollar he save.determine the number of weeks it will take jared to save $100.

*asked on January 11, 2011* -
## math

I need to see how to arrange 8-1/5y=10x to mx+b form Is it -1/5y=10x-8? I need the slope and y intercept. Thanks much to who ever helps me. Can anyone show me how to work this?

*asked on September 4, 2010* -
## math

How can you determine if two lines, plotted on the x-y graph and represented as y=mx + b are perpendicular?

*asked on August 30, 2010* -
## math

divide 5 1/2 divied by 4 3/5 answer in simplest form. does simplest form mean a mixed number or decimal? I got an answer of 1 9/46 or 1.195652...

*asked on July 20, 2010* -
## reimbursement methodologies

Could someone check my answers to see if they are correct. Any feedback would be greatly appreciated.. Mrs. Hall was admitted to the hospital for the first time this year on September 15. On September 25, she was transferred to a skilled nursing facility

*asked on May 12, 2010* -
## ETH/125

Find four to six credible Web sites or articles that support, oppose, or present information about bilingualism in education or politics. I just need help knowing where to look...thanks...

*asked on February 16, 2010* -
## Stats

A bag has 27 balls in it; numbered 1 through 27; no number repeats. If you select two balls from the bag without replacement what is the probability that both are more than 23?

*asked on February 24, 2016* -
## math

buses to the stadium leave central station every 10 minutes buses to the zoo leave central station every 16 minutes both buses leave central station at 4 p.m. find the next time both buses will leave central station at the same time.

*asked on January 11, 2011* -
## PreCalc

Find the standard form of the equation of the ellipse with the following characteristics. foci: (+/-5, 0) major axis of length: 22

*asked on December 2, 2010* -
## Mat115

16÷(-2)◦(-4) ______________ 2³+ 4 16÷8 _______ 8 + 4 2 = 1 12 6 There is supposed to be a line under the first part of the problem making it a fraction.

*asked on July 14, 2010* -
## Math Algebra

Complete xy table if x is 1, 2, 3, _, _, 6 and Y is 10,16, _, 24, 38 then create an equation of the function represented by the given data,

*asked on June 5, 2010* -
## reimbursement methodologies

Can someone please double check my answers. Any feedback would be greatly appreciated..Thanks 1. By creating a committee on social welfare, the American Association of Labor Legislation helped to A. decrease public hospital costs. B. implement fee

*asked on May 13, 2010* -
## science

Using this concept, what role do we each play in sustaining life on Earth? How do our food choices affect our own consumption of the nonrenewable energy available to sustain life?

*asked on January 19, 2010* -
## scientist

Mrs. leuenberger ran the same marathon but since her husband was hunting and she couldn't find a babysitter she had to carry her two daughters in her arms they weigh 40pounds and 55pounds Mrs Leuenberger weighs 145 pound (but you didn't hear that from

*asked on October 25, 2009*