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January 25, 2015

January 25, 2015

Post a New Question | Current Questions

**College Algebra**

1.The graph of y = - 1/2 |x - 5| - 3 can be obtained from the graph of y = |x| by which transformations? What is the horizontal shift? By what factor is the graph stretched or shrunk vertically and how is it reflected? What is the vertical shift? 2. Find the following for the ...
*Saturday, August 4, 2012 at 3:38pm*

**College Algebra**

1.Answer the following for the given quadratic function. f(x) = -2x^2 - 8x - 13 (a) does the graph of f open up or down? (b) what is the vertex (h,k) of f? (c) what is the axis of symmetry? (d) what are the intercepts? (e) how is the graph suppose to look for this question? (f...
*Saturday, August 4, 2012 at 3:20pm*

**College Algebra**

1.Use completing the square to describe the graph of the following function. Support your answer graphically. f(x) = -2x^2 + 4x + 5 2. Find the vertical, horizontal, and oblique asymptotes, if any, for the following rational function. R(x) = 5x/x+7 The vertical asymptote(s) is...
*Friday, August 3, 2012 at 6:33pm*

**Statistics**

What percentage of college students are attending a college in the state where they grew up? Let p be the proportion of college students from the same state as that in which the college resides. If no preliminary study is made to estimate p, how large a sample is needed to be ...
*Wednesday, August 1, 2012 at 1:40pm*

**College Algebra**

1. Which of the following best describes how the graph of f can be obtained from the graph of y = 1/x^2? f(x) = 4/x^2 a. vertical stretch by a factor of -4 b. horizontal shift of 4 units to the right c. reflection over the y-axis, vertical shrink by a factor of 4 d. reflection...
*Wednesday, August 1, 2012 at 12:27pm*

**reading**

(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces and ...
*Tuesday, July 31, 2012 at 3:06pm*

**college physics**

A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, she notices the rope makes a 10.0 degree angle (from horizontal) behind her and a 25.0 degree angle (from horizontal) ahead of her. What are the tensions in the rope in ...
*Monday, July 30, 2012 at 11:00pm*

**statistics**

The National Center for Education surveyed 4400 college graduates about the lengths of time required to earn their bachelor's degrees. The sample mean is 5.15 years, and assume that standard deviation is known to be 1.68 years. Based on the sample data, construct the 99% ...
*Monday, July 30, 2012 at 9:31am*

**writing**

Im speech and psychology this semester in college. I will like to know if there is any websites that can help me with writing a good paper. Thank you in advance!
*Monday, July 30, 2012 at 7:55am*

**math**

The National Center for Education surveyed 4400 college graduates about the lengths of time required to earn their bachelor's degrees. THe sample mean is 5.15 years, and assume that the population standard deviation is known to be 1.68 years. Based on gthe sample data, ...
*Sunday, July 29, 2012 at 11:45pm*

**college physics**

Car A accelerates from rest at 2m/s2. It passes Car B, which is at rest. Thirty (30) seconds later, the latter follows with a constant speed of 10m/s. Determine the distance in order to overtake the other.
*Sunday, July 29, 2012 at 7:48am*

**College Algebra**

Graph the following function using transformations. Be sure to graph all of the stages on one graph. State the domain and range. y = -SQRT x - 6. My instructor is saying that I have to do more than one graph. Can anybody help me I am lost!
*Friday, July 27, 2012 at 1:53pm*

**college stat**

Use the graphic to show the sampling distributions of means for the sample from Prison A (n=82) and the sample from Prison B (n=37). Mark the expected value of the mean and the standard units. Shade in the critical zone for alpha = .05.Locate each sample mean after you have ...
*Tuesday, July 24, 2012 at 4:56pm*

**College Math**

Why is the product of two numbers not always their least common multiple?
*Tuesday, July 24, 2012 at 2:33pm*

**college algebra**

2 log x- log 9=log 441
*Tuesday, July 24, 2012 at 10:32am*

**college algebra**

2 log x- log 9=log 441
*Tuesday, July 24, 2012 at 10:21am*

**Science**

You are a retired law enforcement officer who now teaches at a local community college in the criminal justice program. In addition to teaching ethics, you write crime novels on the side. You recently heard of a real-life case that you thought would make the basis for a good ...
*Monday, July 23, 2012 at 8:19pm*

**college statistic**

A sample of 51 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the 95% ...
*Monday, July 23, 2012 at 6:46pm*

**College algebra**

If the domain and range of a function consists of real numbers, then you can graph it by plotting all ordered pairs (x, f(x)). Remember "y" = f(x). How can you tell by looking at a graph if it represents a function?
*Monday, July 23, 2012 at 5:17pm*

**college **

Consider a normal population with μ = 36 and σ = 4.9. Calculate the z-score for an x of 47.6 from a sample of size 14. (Give your answer correct to two decimal places.)
*Monday, July 23, 2012 at 4:15pm*

**college**

Kp for the reaction CO2(g) + C(s) 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature
*Sunday, July 22, 2012 at 11:20pm*

**John jay college**

A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the z-score corresponding to the sample mean? z = 3.00 z = 1.00 z = 9.00 cannot determine without additional information
*Sunday, July 22, 2012 at 5:59pm*

**John jay college**

A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the z-score corresponding to the sample mean?
*Sunday, July 22, 2012 at 5:57pm*

**Computer science**

As a member of the Information Security team at a small college, you have been made the project manager to install an access control system (ACS) in a dormitory. The ACS will automatically unlock the dormitory doors via an electronic proximity reader and integrate with an ...
*Sunday, July 22, 2012 at 5:05pm*

**college math**

125x^9m+27y^6m
*Friday, July 20, 2012 at 11:09am*

**English**

1. Thomas ____ there but a minute when his girl friend arrived. (be) 2. Some kids ____ to tears with the ordinary textbooks when they entered high school. (bore) (What is the suitable forms of the verbs of the parentheses in the blanks/) 3. Robert announced that he was ____ ...
*Thursday, July 19, 2012 at 4:23pm*

**college math**

The ratio of soda to diet soda in Bill's Supermarket is 8 to 9. If a person counted 72 bottles of soda, how many bottles of diet soda are there?
*Thursday, July 19, 2012 at 12:16am*

**college chemistry**

formt he diluted unknown concentration which i found to be 1.50mg/L i have to calculate the [Fe] in the PRIMARY unknown solution... that is placed in a 250mL volumetric flask
*Wednesday, July 18, 2012 at 3:50pm*

**Computer science**

As a member of the Information Security team at a small college, you have been made the project manager to install an access control system (ACS) in a dormitory. The ACS will automatically unlock the dormitory doors via an electronic proximity reader and integrate with an ...
*Tuesday, July 17, 2012 at 9:49pm*

**Physica**

Peace, and mercy and blessings of God Atqm thank you for helping me teach my children and success in physics at the Mah their college education and that the wrinkles in the balance Hassanatkm for all and especially Damo,Drwls, bobpursley.Elena
*Tuesday, July 17, 2012 at 6:01am*

**College Algebra**

The conjugate of square root of 2+d is________.
*Tuesday, July 17, 2012 at 12:44am*

**College Algebra**

Sandy is going on a business trip to Washington state. She has a 46 inch umbrella to pack since she will be there during rainy season. She plans to pack the umbrella in the diagonal of her suitcase, but she has to buy the suitcase first. The airline company will allow a ...
*Tuesday, July 17, 2012 at 12:39am*

**College Chem**

How many molecules of CH3OH will contain 3.20 x 10^23 H atoms?
*Monday, July 16, 2012 at 11:14pm*

**College Chem**

A mixture containing 5.0 g of H2 and 10.0g of O 2 is allowed to react in a 15.0L container at a constant temperature of 25.0 C. Once the reaction is complete, what will be the pressure of the excess gas inside the container?
*Monday, July 16, 2012 at 11:07pm*

**American History **

The 1978 Supreme Court decision in Bakke v. Regents of the University of California A. ruled in favor of affirmative action within specified limits. B. established the "red state-blue state" divide. C. ruled against the principle of affirmative action. D. established...
*Monday, July 16, 2012 at 2:49pm*

**math**

A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 490 college students showed that 33% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval.
*Sunday, July 15, 2012 at 5:26pm*

**Accounting, Finance**

Do you have college accounting help also?
*Sunday, July 15, 2012 at 9:10am*

**college algebra**

Find the standard form of the equation of an ellipse with center at (-2,1) with major axis length 10 along y axis and minor axis length 8 along the x axis
*Saturday, July 14, 2012 at 3:46pm*

**college algebra**

find the equation of a parabola that opens to the right with given vertex: (0,3) and passes thru the point: (2,-1)
*Saturday, July 14, 2012 at 3:09pm*

**college algebra**

write the equation of the hyperbola in standard form: x^2-4x-y^2+6y=9
*Saturday, July 14, 2012 at 2:22pm*

**Harvard Referencing, help please!**

Hey, I have here Clinical Protocols in front of me from one of the hospitals. I'm writing up an assignment and need to reference some parts of the protocol. The system that we use in college is Harvard Referencing system but I never referenced protocols before. Any tips? ...
*Saturday, July 14, 2012 at 10:40am*

**College Chemistry**

How many grams of steam and iron must react to produce 375g of magnetic iron oxide, Fe3So4
*Friday, July 13, 2012 at 4:34pm*

**College Math**

In West Virginia, 100 days of the year (365)have temperatures less than32 degrees Fahrenheir. What (reduced) fraction of the days is that? I'm not sure how to go about finding the answer. Can you please help?
*Friday, July 13, 2012 at 4:04pm*

**statistic**

1.The state highway patrol stops every 5th car on highway 210 to check drivers' licenses and registrations. Which sampling technique are they using? systematic sampling -chose this one convenience sampling cluster sampling simple random sampling stratified sampling 2.You ...
*Friday, July 13, 2012 at 6:56am*

**College Chemistry**

given the concentration of 125.0mg/L of Fe(2+)in the stock solution and the volume used which is (1.00mL) how do i calculate the concentration of iron(II) ions in mg/L? i pipet 1.00mL of the stock into a 250ml volumetric flask!
*Thursday, July 12, 2012 at 9:51pm*

**college chemistry**

When ethane reacts with oxygen to form carbon dioxide and water. When 10 molecules of ethane react with 20 molecules of oxygen, what is the composition of the FINAL mixture?
*Thursday, July 12, 2012 at 3:29pm*

**History**

2. The 1978 Supreme Court decision in Bakke v. Regents of the University of California A. established the rights of students to appeal college admissions policies. B. established the "red state-blue state" divide. C. ruled in favor of...
*Thursday, July 12, 2012 at 1:45pm*

**Statistics**

An instructor for a college biology lab has each of her 12 students (you are one of those 12 students) take their own SRS of 25 plants from an experimental field. She lets you know that the heights (measured in cm) of the plants in the field follow a N(50,4) distribution. a. ...
*Wednesday, July 11, 2012 at 10:03pm*

**statistics**

a random sample of 80 college students was selected to participate in a experiment. the mean of the sample is 317 points, the standard deviation of 37 there are 310 students that didn't complete the experiment 1. compute the appropriate test statistic? 2. what is the ...
*Wednesday, July 11, 2012 at 2:40pm*

**college algebra**

Find the height of the aircraft if the atmospheric pressure is 197 millimeters of mercury
*Tuesday, July 10, 2012 at 10:10pm*

**College Algebra**

Add: (6x)/(5z^(2))+(2y)/(xz)+(z)/(xy^(2))
*Tuesday, July 10, 2012 at 2:12pm*

**College Algebra**

Hooke's Law states that the distance a spring stretches is directly proportional to the weight attached to the spring. If a 30-pound weight attached to the spring stretches the spring 8 inches, find how much weight is needed to stretch the spring 12 inches.
*Tuesday, July 10, 2012 at 2:09pm*

**College Math**

Write the mixed number as an imprper fraction. 7 1/9 = A. 64/9 b. 22/3 c. 7/1 d. 65/9 I think the answer is A.
*Monday, July 9, 2012 at 11:21am*

**College Chemistry**

give the balanced equation for oxidation of iron(II)ion by permanganate and find how many millimoles of permanganate ion react with one millimole of ammonium iron(II) sulphate. I have the balanced equation: MnO4+8H+5Fe^(2+) --> Mn+4H2O+5Fe^(3+) what would be my next step?
*Monday, July 9, 2012 at 1:44am*

**College Physics**

An electron is released from rest at a perpendicular distance of 9.1 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 7.8 ìC per meter. What is the magnitude of the electron's initial acceleration?
*Sunday, July 8, 2012 at 9:44pm*

**College Physics**

A uniformly charged conducting sphere of 1.3 m diameter has a surface charge density of 8.7 µC/m2. (a) Find the net charge in coulombs on the sphere. (b) What is the total electric flux leaving the surface of the sphere?
*Sunday, July 8, 2012 at 9:43pm*

**College Physics**

A point charge of 2.0 µC is at the center of a cubical Gaussian surface 60 cm on edge. What is the net electric flux through the surface?
*Sunday, July 8, 2012 at 9:42pm*

**College Physics**

A square surface measures 4.4 mm on each side. It is immersed in a uniform electric field with magnitude E = 2100 N/C and with field lines at an angle of 35° with a normal to the surface. Take that normal to be "outward," as though the surface were one face of a ...
*Sunday, July 8, 2012 at 9:42pm*

**College Physics**

particle 1 of charge q1 = 5.80 pC and particle 2 of charge q2 = –6.90 pC are fixed at a distance d = 1.80 cm apart. In unit-vector notation, what is the net electric field at points (a)A [to the left of q1], (b)B [between q1 and q2], and (c)C [to the right of q2]?
*Sunday, July 8, 2012 at 9:39pm*

**College Physics**

A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -2.1 x 10-9 C is acted on by a downward electrostatic force of 4.3 x 10-6 N when placed in this field. (a) What is the magnitude of the electric field? (b) What is the ...
*Sunday, July 8, 2012 at 9:37pm*

**College Physics**

In Millikan's experiment, an oil drop of radius 1.75 ƒÊm and density 0.882 g/cm3 is suspended in chamber C (Fig. 22-14) when a downward electric field of 1.35 ~ 105 N/C is applied. Find the charge on the drop, in terms of e.
*Sunday, July 8, 2012 at 9:36pm*

**College Physics**

Two particles are fixed to an x axis: particle 1 of charge q1 = 2.22 x 10-8 C at x = 15.6 cm and particle 2 of charge q2 = -4.33q1 at x = 66.7 cm. At what coordinate on the x axis is the electric field produced by the particles equal to zero?
*Sunday, July 8, 2012 at 9:34pm*

**College Physics**

two charged particles are located on an x axis: -q = -4.80 × 10-19 C at x = -3.00 m and q = 4.80 × 10-19 C at x = 3.00 m. What are the (a)x- and (b)y- components of the net electric field produced at point P at y = 5.00 m?
*Sunday, July 8, 2012 at 9:30pm*

**College Physics**

Two particles are fixed to an x axis: particle 1 of charge -7.93 x 10-7 C is at the origin and particle 2 of charge +7.93 x 10-7 C is at x = 14.6 cm. Midway between the particles, what is the magnitude of the net electric field?
*Sunday, July 8, 2012 at 9:28pm*

**College Physics**

In an electric field, the lines on the left have twice the separation as those on the right. (a) If the magnitude of the field at A (particle in the field with lesser separated lines) is 58 N/C, what is the magnitude of the force on a proton at A? (b) What is the magnitude of ...
*Sunday, July 8, 2012 at 9:27pm*

**College Business Statistic**

One operation of a mill is to cut pieces of steel into parts that will later be used as the frame for front seats in an automobile. The steel is cut with a diamond saw and requires the resulting parts to be within ±0.005 inch of the length specified by the automobile ...
*Saturday, July 7, 2012 at 4:13pm*

**College Physics**

four particles are fixed along an x axis, separated by distances d = 2.70 cm. The charges are q1 = +3e, q2 = -e, q3 = +e, and q4 = +6e, with e = 1.60 × 10-19 C. What is the value of the net electrostatic force on (a) particle 1 and (b) particle 2 due to the other ...
*Friday, July 6, 2012 at 10:41pm*

**College Physics**

The magnitude of the electrostatic force between two identical ions that are separated by a distance of 7.8 × 10-10 m is 97.10 × 10-9 N. (a) What is the charge (in Coulombs) of each ion? (b) How many electrons are “missing” from each ion (thus giving the ...
*Friday, July 6, 2012 at 10:40pm*

**College Physics**

Two tiny, spherical water drops, with identical charges of -7.10 x 10-16 C, have a center-to-center separation of 1.23 cm. (a) What is the magnitude of the electrostatic force acting between them? (b) How many excess electrons are on each drop, giving it its charge imbalance?
*Friday, July 6, 2012 at 10:39pm*

**College Physics**

particle 1 of charge q1 = 1.04 ìC and particle 2 of charge q2 = -2.99 ìC, are held at separation L = 10.8 cm on an x axis. If particle 3 of unknown charge q3 is to be located such that the net electrostatic force on it from particles 1 and 2 is zero, what must be...
*Friday, July 6, 2012 at 10:38pm*

**College Physics**

In Fig. 21-24, the particles have charges q1 = -q2 = 400 nC and q3 = -q4 = 92 nC, and distance a = 5.0 cm. What are the (a) x and (b) y components of the net electrostatic force on particle 3? The figure cannot be uploaded, but the particles are located as a square, with q1 in...
*Friday, July 6, 2012 at 10:37pm*

**College Physics**

Two equally charged particles, held 2.8 x 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 6.8 m/s2 and that of the second to be 6.8 m/s2. If the mass of the first particle is 5.3 x 10-7 kg, what are (a) the mass of the ...
*Friday, July 6, 2012 at 10:35pm*

**College Physics**

What must be the distance in meters between point charge q1 = 25.6 µC and point charge q2 = -69.6 µC for the electrostatic force between them to have a magnitude of 8.50 N?
*Friday, July 6, 2012 at 10:34pm*

**College Physics**

A wheel of radius 0.398 m is mounted on a frictionless horizontal axis. The rotational inertia of the wheel about the axis is 0.0576 kg·m2. A massless cord wrapped around the wheel is attached to a 0.790 kg block that slides on a horizontal frictionless surface. If a ...
*Friday, July 6, 2012 at 10:29pm*

**Just a question**

Does community college re-teach you, what you forgot in highschool? Ive been out of highschool for YEARS and forget everything ive learned. Will the college re-teach me?
*Friday, July 6, 2012 at 7:26pm*

**statistics**

Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 ...
*Friday, July 6, 2012 at 6:37pm*

**Economics**

1) In which of the following situations would someone have to pay a gift tax? A. A relative dies and leaves you $13,000 in the will. B. Your cousin gives you a car worth $1,700. C. Your grandmother gives you $13,000 toward college. <<--- 2)Which of the following has ...
*Friday, July 6, 2012 at 5:02pm*

**math 098**

I made 3 f's on my tests in math 098, do you think i need to withdraw and take math 090 instead. this is my first semester and i really want to do my best please help. math 098 is algebra math 090 is basic for college. the score were equations--52,distance problems---55, ...
*Friday, July 6, 2012 at 7:09am*

**info lit**

please check my work? Scholarly journal articles are written: A. By experts in a subject field B. By lower division college students C. For a general audience D. By reporters my answer is: A
*Wednesday, July 4, 2012 at 4:00am*

**College Physics**

A convergent lens forms a real image 2.41 times the size of the object. The distancebetween object and image is 62.6 cm.Find the distance of the focal point fromthe center of the lens.Answer in units of cm
*Tuesday, July 3, 2012 at 3:36pm*

**research tech**

which of the following is a primary source a. a newspaper article published in the 1980's that reports on an event in the 1880's c.a recently published history book that cites diaries and letters from the 1880's d.diaries and letters from the 1880's published ...
*Monday, July 2, 2012 at 11:00pm*

**College Physics**

A person who is properly constrained by an over-the shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed about 30 "g"s (1.0 g= 9.8m/s^2) Assumind uniform deceleration of this calue calculate the distance over which the...
*Monday, July 2, 2012 at 10:32pm*

**math**

A trangular region of a community college parking lot was measured. The measure of thefirst angle of this triangle is double the measure of the second angle. the measure of the third angleis 131 greater than double the measure of the first angle. what are the measurements of ...
*Monday, July 2, 2012 at 7:46pm*

**Math**

. Jacksonville Technical College received $3,445,553 in state aid on September 15 for the fall academic semester. The vice-president for finance decided to invest $2,000,000 in a 2-month investment that pays 11.5% simple interest. How much interest will the college earn on the...
*Sunday, July 1, 2012 at 12:47pm*

**introduction to university studies**

how might you use mnemonics in college students and adult learners?
*Saturday, June 30, 2012 at 1:54am*

**psychology**

Hello, I have to do a method section for a paper and need to know what I would put down for measurement and procedure section. like an example its on 500 college women and 500 college men participating in a study. thanks
*Thursday, June 28, 2012 at 11:49pm*

**Math Economics**

1. Jacksonville Technical College received $3,445,553 in state aid on September 15 for the fall academic semester. The vice-president for finance decided to invest $2,000,000 in a 2-month investment that pays 11.5% simple interest. How much interest will the college earn on ...
*Wednesday, June 27, 2012 at 7:29pm*

**Physics **

A block of mass 20g sits at rest on a plate that is at the top of the fluid on one side of a u-tube as shown in figure P10.38. The u tube contains two different fluids with densities p1= 1000 kg/m^3 and p2= 600 kg/m^3 and has a cross sectional area of A= 5.0 x10^-4 m^2. If the...
*Wednesday, June 27, 2012 at 4:18pm*

**college algebra**

simplify. express answer with positive exponents only. (-2x^-5y^4z^2)-3
*Wednesday, June 27, 2012 at 12:20pm*

**college chem**

How do i write the overall reaction equation for the synthesis of aluminum potassium sulphate dodecahydrate
*Tuesday, June 26, 2012 at 1:36am*

**College Chemistry**

What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M, ...
*Saturday, June 23, 2012 at 2:45pm*

**College algebra**

A cyclist bikes at a constant speed for 18 miles. He then returns home at the same speed, but takes a different route. His return trip takes one hour longer and is 23 miles. Find his speed
*Friday, June 22, 2012 at 10:54am*

**Math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
*Thursday, June 21, 2012 at 3:15am*

**Math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
*Thursday, June 21, 2012 at 3:13am*

**physical Edu**

7. HIV infection is not a significant risk for college students. False right?
*Wednesday, June 20, 2012 at 5:30pm*

**college math**

Find the value of the expression 99 x 4/9 -(5=4)
*Tuesday, June 19, 2012 at 11:33pm*

**college math**

Ms. Sue will the correct answer be 0.16 for the percent decrease. this question electric bill $80.77 -$69.06 = $11.71
*Tuesday, June 19, 2012 at 11:28pm*

**college math**

Solve 7=m/5 the correct answer be m=35
*Tuesday, June 19, 2012 at 11:01pm*

**college math**

Last month Bill's electric bill was $80.77. This month it is $69.06. what is the percent decrease? $80.77 - $69.06 = $11.71 , I don't understand multiply decimal by 100 to get the decrease
*Tuesday, June 19, 2012 at 10:58pm*

**college math**

Last month Bill's electric bill was $80.77. this month Bill's bill was $69.06. What is the percent decrease?
*Tuesday, June 19, 2012 at 10:44pm*

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