Friday
March 6, 2015

Search: the cellular phone plan you signed up for gives you 400 minutes a month for $35.00 and charges .15 for each additional minute over 400 minutes. How long can you talk on the phone each month and stay within a budget of $45.00?

Number of results: 47,306

algebra
the first of two films lasted 9 minutes less than twice as long as the second. the combined length of the two films plus a 5-minute break between them was 260 minutes. how long was the first film?
August 16, 2012 by nickky

Math
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5 C after 3 minutes; 90 C after 5 minutes, 84.8 C after 9 minutes; 70.2 C after 18 minute; 54.4 C after 30 minutes; 42.5C after 37 minutes; and 24.9 C ...
May 1, 2013 by Brittany

algebra 1
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5 C after 3 minutes; 90 C after 5 minutes, 84.8 C after 9 minutes; 70.2 C after 18 minute; 54.4 C after 30 minutes; 42.5C after 37 minutes; and 24.9 C ...
May 1, 2013 by Brittany

Math
a long distance phone company charges $3 for a phone call plus $0.75 for each minute of the call. What fuction does this situation give rise to? Find the formula and make a table for this function.
November 17, 2010 by lt

Math
A international phone call cost a fixed amount for the first minute and a certain rate per each additional minute. If a 7 minute phone call cost $10 and a $4 call cost &6.40, find the fixed charge and the rate per each additional minute.
October 21, 2012 by Jamese

math
don't know where to start or end! charges $20 for a phone and $30/month for its economy plan. The equation C =30t + 20 describes the total cost, C of operating a media service phone for t months. The total cost for 10 months of service is $_______.? If a customer has only 80 ...
September 27, 2010 by jean

math
A phone compant uses the expression 1.25 + 0.10m to calculate the cost of a phone call that lasts m minutes. What is the cost of a call that last 20 minutes?
March 7, 2011 by Jay

math 120
A recent poll of a random sample of 400 students at a public 4-year college showed the average (mean) amount of time spent using email was 49 minutes per day with a standard deviation of 44 minutes. a. find a 95% confidence interval fot the population mean
December 11, 2014 by Anonymous

Math
Open Ended Nick is starting college in the fall. She has purchased a Star Phone card for $30.00for long didtance calls. The calls cost 10 cents per minute nation wide during the daytime, 6 a.m - 6 p.m and 5 cents per minute nationwide at night, 6 p.m-6a.m. Every day Nick ...
March 3, 2008 by Mack

Math
The attendance at a baseball game was 400 people. Student Ticket cost $2 and adult tickets cost were $3. Total Ticket Sales were $1050. How many tickets of each type were sold? Ok, this is what I did: 2x+400=1050 -400=-400 ----------- 2x=650 x=325 3y+400=1050 -400=-400...
September 22, 2007 by Robert

Math
Beth got a job painting dorm rooms at her college. At top speed, she could paint 5 identical rooms during one 6-hour shift. How long did she take to paint each room? A. 50 minutes B. 1 hour and 10 minutes C. 1 hour and 12 minutes D. 1 hour and 15 minutes E. 1 hour and 20 minutes
February 3, 2014 by Anonymous

Math
Bill can mow his mothers lawn in 6 minutes. His brother Jim can mow it in 9 minutes. How long will it take them to do it together, if each has his own lawnmower? (record answer in minutes rounded to one decimal place. For example 14.2835 minutes, record 14.3).
August 27, 2009 by tiffany

statistics
Waiting times at a doctor office are normally distributed with a mean of 35 minutes, and a standard deviation of 10 minutes. What is the chance a patient would have to wait over 50 minutes?
November 5, 2014 by Cecy

MATH I WANT TO PLAY
HOW MANY HOURS ARE IN 5.400 MINUTES
March 18, 2011 by Americal

algebra
A car travels at a constant rate of 45 mph on a highway iffinitely (assume it never has to stop for gas) How far has the car traveled after x minutes? 45 miles/hr * (1/60 hr/minute) * x minutes = 3/4 x miles (if x is in minutes)
June 26, 2007 by Anonymous

math
on the fastest speedways, some drivers reach average speeds of 2 miles per minute. write the formula that gives the number of miles M that such driver would travel in x minutes. How would this driver travel in 37 minutes
April 11, 2011 by Joe

math
On the fastest speedways some drivers reach average speeds of 4 miles per minute. Write a formula that gives the number of miles m that such a driver would travel in x minutes. How far would this driver travel in 36 minutes?
February 17, 2011 by Anonymous

chemistry
A slab of plate glass containing dissolved helium is placed in a vacuum furnace at a temperature of 400 C to remove the helium from the glass. The concentration of helium is constant throughout the glass before vacuum heat treatment. After 10 minutes in vacuum at 400 C, at ...
December 21, 2013 by Dick

math
Frank's cell phone package costs $20 per month and an additional $0.05 per text. Josie pays $15 per month and $0.10 per minute. Determine the linear system that could be used to find out when their monthly bills would be the same.
July 28, 2012 by David

math
Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 hours. How quickly can all three fill the pool together? A. 12 minutes B. 15 minutes C. 21 minutes D. 23 minutes E. 28 minutes
March 19, 2009 by sharon

math
On Friday morning two clocks are correctly set at 6 a.m. One clock gains 1 minute every 2 hours. The other clock loses 1 minute every hour. When the real time is 10 p.m. that evening, the fast clock is ______ minutes ahead of the slow clock. Please explain the answer Thanks I ...
January 5, 2014 by nisrin

Math
My daughter's homework and I cant figure it out for the life of me. In America the average person spends about 9.5 billion minutes on the phone a business day. In 1997 the estimated population of Americans the ages of 19-64 is about 163,000,000. About how many minutes does the...
September 27, 2006 by SherylA

Algebra 2
"your long distance service provider charges you $.06 PER minute plus a monthly access fee of 4.95 for referring a friend,you receive $10 service credit this month.if your long-distance bill is 7.85,how many long-distance minute did you use"
August 28, 2013 by junior

Chemistry
I've tried this problem over and over again, but im not getting the right answers! This is the problem....... Dinitrogen pentoxide, N2O5, decomposes when heated in carbon tetrachloride solvent. N2O5 2 NO2 + 1/2 O2(g) If the rate constant for the decomposition of N2O5 is 6.2...
November 10, 2009 by Dena

stat
An oil change company advertises that they can change the oil in your car in 15 minutes. Based on the data collected below, what is the probability that oil change will take more than 15 minutes? Class Interval Frequency 6 to 10 minutes 3 11 to 15 minutes 8 16 to 20 minutes 6 ...
August 26, 2013 by latasha

Algebra
An average American spends 30 minutes a day waiting in a line. They also drive for 5/3 hours, eat for 5 quarters of an hour, and talk on the phone for 83 minutes every day. If they spend 1/x of their lifetime on waiting in a line, driving, eating, or talking on the phone, what...
September 22, 2013 by Glen

statistics
the scheduled commuting time on Long Island Rail Road from Glen Cove to New York is 65 minutes. Suppose that the actual commuting time is uniformly distributed between 64 and 74 minutes. What is the probability that the commuting time will be a) less than 70 minutes B) between...
January 11, 2011 by ann

math
Diane plans to drive 30 miles to her interview. If she averages 25 miles per hour, how long will it take her to get there? Answers: (A) 50 minutes (B) 55 minutes (C) 1 hour and 12 minutes (D) 1 hour and 20 minutes
May 7, 2014 by Lakota

5th grade Math
One tap can fill a barrel in 3 minutes and another can fill it in 6 minutes. Both taps are turned on together for 1 minute. What fravction of the barrel will be filled in 1 minute?
April 26, 2009 by Serena

algebra 1
*I have asked countless people to help me with this story problem and nobody seems to know how to do it! Please help! Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5 C after 3 minutes; 90 C after 5 ...
May 2, 2013 by Brittany

math
Andrew worked from 9:45 am to 3:40 pm on Saturday.how long did he work on Saturday? A)5 hours 50 minutes B)5 hours 55 minutes C)6 hours 5 minutes D)6 hours 55 minutes i got 6 hours 35 minutes what did i do wrong
March 25, 2010 by george

math
two phone companies offer discount rates to students. the first company wants $9.95 per month plus $.10 per minute for long distance calls. The second company wants $12.95 per month plus $.08 per minute for long distance calls. What is the equation?
September 21, 2014 by susie

Algebra
A cellular offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25 (t-600) + 41.95, where it is assumed that t 600 minutes. What times will keep costs between $79.95 and $117.20?
April 3, 2010 by Michael

algebra
media service charges $20 for a phone and $30/month for its economy plan. The equation C =30t + 20 decribes the total cost, C of operating a media service phone for t months. The total cost for two months of srvice is $_______.? If a customer has oly 90 avilable, how many ...
July 6, 2010 by Jim

Math
do you borrow his bike for a total of 41 minutes.before lunch,he vote for one minute less than five times the number of minutes he rolled after lunch. how many minutes did you fire ride before lunch
November 12, 2014 by Greg

algebra
Two phone companies offer discount rates to students. The first company wants $9.95 per month plus $.10 per minute for long distance calls. The second company wants $12.95 per month plus $.08 per minute for long distance calls.
January 21, 2014 by mu

Math
An airplane has a speed of 400 km/h with no wind. The airplane flies 2140 km with the wind. The airplane can only fly 1860 km against the wind in the same time. If w equals the speed of the wind, which equation would be used to find w? a) 2140/(w+400) = 1860/(w-400) b. 2140/(...
January 10, 2012 by Jayson

math
The first of two films lasted 9 minutes less than twice as long as the second. The combined length of the two films plus a 5-minute break between them was 260 minutes. How lon was the film I dont know how to set it up the words confuse me Help?
October 26, 2012 by Yonatan

Algebra
You are choosing between two long distance telephone plans. One plan has a monthly fee of $15 with a charge of $.05 per minute. The other plans has a monthly fee of $5 with a charge of $.07 per minute. For how many minutes of long-distance calls with the cost for the two plans...
February 2, 2012 by lolo

Mathematics
Anna burned 15 calories per minute running for x minutes and 10 calories per minute hiking for y minutes. She spent a total of 60 minutes running and hiking and burned 700 calories. The system of equations shown below can be used to determine how much time Anna spent on each ...
September 24, 2013 by Joy

Statistics
If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the point in the distribution in which 75.8% of the college ...
March 19, 2010 by Pacifico

Algebra
Leila purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Leila used her card only once to make a long distance call. If the remaining credit on her card is , how many minutes did her call last?
July 8, 2013 by Ron

algrebra
Christine purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Christine used her card only once to make a long distance call. If the remaining credit on her card is , how many minutes did her call last?
May 12, 2014 by terri

math
i have 20.00 for my phone calls every time i call it takes 2.50 then 24 cents a minute how much would it cost to talk for 5 minutes?
December 27, 2014 by tara

stats
An automobile repair shop has determined that the average service time on an automobile is 2 hours with a standard deviation of 32 minutes. A random sample of 64 out of 400 services is selected. What is the probability that this sample will have a mean service time greater ...
November 11, 2009 by sandy

health
4. What is the ideal length of time for a cool-down following an intense workout? A. 15 to 20 minutes B. 5 to 15 minutes C. 0 to 3 minutes D. 3 to 5 minutes i think its b?
November 20, 2011 by Anonymous

math
The temperature in a room is changing at a steady rate. If x is the number of minutes since noon, the temperature was -4 C when x = -3 minutes and the temperature was 6 C when x = -5 minutes. Find the rate of change in temperature in degrees per minute. The answer is -5. How...
February 5, 2015 by HAAAAAAAAY

calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
January 31, 2012 by Anonymous

calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
January 31, 2012 by Anonymous

calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
January 31, 2012 by Anonymous

calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
January 31, 2012 by Anonymous

ENGLISH!!
After a few __________ hesitation, he agreed that __________ not worth the risk. minute's its' minutes' its minutes' it's minute's it's There is no such word as its', so the first pair is out. it's means "it is" or "it has" its is used when "it" owns/possesses the noun ...
October 16, 2006 by Kourtney

pre algebra
Two bank robbers flee at 60 mph. 26 minutes later, a police helicopter follows at 120mph. How long til they catch them? I figured 39 minutes. I takes the police 13 minutes to get to the 26 mile mark. Then the robbers move 13 miles forward. then the police take 6.5 minutes to ...
December 15, 2014 by Phoebe

Stitistics
An oil change company advertises that they can change the oil in your car in 15 minutes. Based on the data collected below, what is the probability that oil change will take more than 15 minutes? Using this example as a template, post a similar example from your experience. ...
July 9, 2013 by Sandi

stat
The average commute time via train from the Chicago O'Hare Airport to downtown is 60 minutes with a standard deviation of 15 minutes. Assume that the commute times are normally distributed. What proportion of commutes would be: longer than 80 minutes? less than 50 minutes? ...
October 14, 2011 by des

Q Research
2. The average commute time via train from the Chicago O'Hare Airport to downtown is 60 minutes with a standard deviation of 15 minutes. Assume that the commute times are normally distributed. What proportion of commutes would be: a. longer than 80 minutes? b. less than 50 ...
December 9, 2012 by Maurice

algebra
Mike can assemble a computer table in 40 minutes and I can do it in 60 minutes. If Mike works for 20 minutes before I join him, how long will it take us to finish?
May 24, 2010 by TinaG

mathematics
One hydrant can fill a truck in 12 minutes, another in 6 minutes . If they are both turned on together how long would the truck take to be filled? 12+6= 18\2= 9 minutes
July 23, 2014 by Maggie

heart and lungs/cardiorespiratory fitness
what is the ideal length of time for a cool-down following an intense workout a.0 to 3 minutes b.15 to 20 minutes c.3 to 5 minutes d.5 to 15 minutes my answer is d
February 5, 2014 by susue

physics
A woman pushes a refrigerator across the floor at a steady speed of 20cm/s . If she has to push with a horizontal force of 400 N to keep it moving , is the force of friction less than 400 N , 400 N, more than 400 N, why
March 25, 2012 by Melissa

Quantative reserach
1. The average commute time via train from the Chicago O'Hare Airport to downtown is 60 minutes with a standard deviation of 15 minutes. Assume that the commute times are normally distributed. What proportion of commutes would be: a. longer than 80 minutes? b. less than 50 ...
November 13, 2011 by Michael

math
What is the figure that gives the half-life of the isotope in minutes to 4 significant figures? Exponential regression on a set of data, which gives the amount of atoms of a radioactive isotope remaining after a time X minutes, produced the following output. ExpReg y = a*b^x a...
May 18, 2007 by claudia

statistics
A cell phone service provider has selected a random sample of 20 of its customers in an effort to estimate the mean number of minutes used per day. The results of the sample included a sample mean of 34.5 minutes and a sample standard deviation equal to 11.5 minutes. Based on ...
February 22, 2015 by timothy kendricks

math
Where K is a constant to be determined. If it took Ian 45 minutes to exit the stadium when there were 5,000 people who drove and 1,500 people who took public transportation, how much time will it take Ian to exit if there are 12,500 people who drove and 4,00 who took public ...
May 27, 2014 by Sandi

19
Healthy pregnant and postpartum women should get at least ________ of moderate-intensity aerobic activity a week. A. 60 minutes B. 150 minutes C. 30 minutes D. 200 minutes b
March 4, 2012 by desha

statistics
Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 28 Minutes and a standard deviation of 4 minutes, while B has a mean of 32 minutes and a standard deviation of 2 minutes. a)which procedure is preferred if the procedure must...
April 11, 2014 by Rontheman

Math
Can you please check my answers, thank you #2. 5/y+4 + 11/y^2=y-12 = 7/y-3 Answer -2 #4 The length of a rectangle is 2 cm more than twice its width. If the perimeter of the rectangle is 40 cm, find the length of the rectangle. A. 6 cm B. 9 cm C. 11 cm D. 14 cm Answer B = 9cm #...
August 26, 2012 by Ron

Math
In 3 minutes I can type 192 words. and in 5 minutes I can type 311 minutes. Find how many words I can type per minute. Help please.
February 12, 2014 by Melanie

math
can someone double check this answer for me? I got 60/11 Ingrid can rake our lawn in 90 minutes and i can do it in 60 minutes. If ingrid rakes for 15 minutes before i join her, how long will it take us to finish?
September 25, 2008 by kayla

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 patient's bloodstream...
November 17, 2014 by Barb

astronomy
A line in star's spectrum lies at 400.0 nanometers. In the laboratory, that same line lies at 400.2 nanometers. How fast is the star moving along the line of sight; that is, what is its radial velocity? Is it moving toward or away from us? Since the wavelength shift is to ...
April 27, 2007 by Sethi

Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ...
October 30, 2013 by Leah

Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ...
October 30, 2013 by Emily

Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ...
October 30, 2013 by Leah

maths
show tha minute hand of a clock gains 5 degree 30 minutes over the hour hand in one minute?
June 30, 2012 by divya

Mathh
A certain state taxes the first $400,000 in property value at a rate of 1%; all value over $400,000 is taxed at 1.75%. Find a piecewise-defined function T that specifies the total tax on a property valued at x dollars. (Simplify your answer completely.) 0.01x if 0<x<400,...
January 21, 2014 by A

Algebra
A company has two printers. Printer A prints a pages per minute, and Printer B prints b pages per minute. When Printer A prints for 3 minutes and Printer B prints 5 minutes, a total of 70 pages are printed. When Printer A prints for 6 minutes and Printer B prints for 9 minutes...
March 31, 2013 by Angie

math
4 people need to cross a brige but it is dark outside and they only have one flashlight and only 2 people can cross at one time. doris takes 10 minutes bob takes 5 minutes jack takes 2 minutes and annie takes 1 minute. how can thay get across in 17 minutes. someone has to go ...
March 9, 2010 by jake

math
Javierminuteis bike for a total of 41 minutes. Before lunch,he rode For 1 minute less Than 5 times the number of minutes he rode after lunch. How many minutes did Javier ride before lunch?
April 22, 2014 by shekinah

business statistics
Please can you give me the step to do this exercise? Thank you Samples of 12-volt batteries are taken at 30-minute intervals during a production run. Each sample consists of 3 batteries, and a technician records how long each battery will produce 400 amperes during a standard ...
August 24, 2009 by Josephine

Algebra
Another question: A cell phone company charges $60 for a cell phone and $40 per month under its economy plan. Formulate and graph a model that can be used to determine the total cost, C(t), of operating a cell phone for t months. Find the total cost for 5 and 1/2 months of ...
December 16, 2008 by Celina

Math, Still Need Help!
Ok, This is the question: The attendance at a baseball game was 400 people. Student Ticket cost $2 and adult tickets cost were $3. Total Ticket Sales were $1050. How many tickets of each type were sold? This is what I did: 2x+400=1050 -400=-400 ----------- 2x=650 x=325 3y+400=...
September 22, 2007 by Robert

math
Bladder infections are often caused when the bacteria E. coli reach the human bladder. Suppose that 3000 of the bacteria are present at time t = 0. Then t minutes later, the number of bacteria present will be a) How many bacteria will be present after 10 minutes? 30 minutes? ...
March 24, 2014 by Emmanuel

Math
A celluar phone company offers a contract for which the cost c, in dollars,t minutes telophoning is givien by c=0.25(t-600)+71.95, where it is assumed that t is greater than or equal to 600 minutes.
January 31, 2010 by Anonymous

calculus
assume that during the first 3 minutes after a foreign substance is introduced into the blood,the rate R'(t) at which new antibodies are produced(in thousands of antibodies per minute) is given by R'(t)=t/(t^2+1) where t is in minutes.find the total quantity of new antibodies ...
March 19, 2013 by tan

math
the minute hand of a clock is 6 inches long. how far does the tip of the minute hand move in 15 minutes?
December 8, 2008 by kayla

english
I don't know if my experience would be considered good or bad, but it really taught me a lesson. A few years ago, I was working a bank, and they had a representive from a cell phone company come and talk to everyone about getting a cell phone. I did not have a cell phone at ...
August 10, 2011 by Anonymous

statistics
The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses more than 350 minutes?
July 28, 2012 by Anonymous

Math
The tip of the minute hand of Boston's Custom House Tower clock travels 6ft. 10 in. in 5 minutes.How long is the minute hand ?
February 1, 2011 by Nataliestom House T

math
If the rental fee on a land line phone is $45 per month and $0 per month for a cell, and the cell cost 85 cents a minute and the land line cost 15 cents a minute, with calls for one month on both phones totaling 1 hr and 5 mins,show how the land line phone cost less than using...
April 9, 2008 by Jay

statistics
The time required to travel downtown at am on Monday morning is known to be normally distrubted with a mean of 40 minutes and a standard deviation of 5 minute what is the probability that it will take less than 40 minutes?
January 19, 2012 by john kollie

Algebra 1A
Translate Two dollars plus four cents times the number of minutes in part into a symbolic rule. Use c to represent the total monthly cost and n to represent the total number of long-distance minutes for the month.
December 2, 2009 by Peter

Algebra 1A
Translate Two dollars plus four cents times the number of minutes in part into a symbolic rule. Use c to represent the total monthly cost and n to represent the total number of long-distance minutes for the month.
December 4, 2009 by Mike

math
If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks? A. 2 minutes and 44 seconds B. 2 minutes and 58 seconds C. 3 minutes and 10 ...
January 6, 2009 by tammy

math
If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks? A. 2 minutes and 44 seconds B. 2 minutes and 58 seconds C. 3 minutes and 10 ...
January 7, 2009 by tammy

Finite Math
The price of a new car is $24,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 10%/year compounded monthly. (Round your answers to the nearest cent.) (a) What monthly payment will she...
May 19, 2014 by Savanna

Math
how do you do a problem like this? 720m/day=?m/mm your units don't match and make no sense. did you mean 720 m/day = ? m/minute? there are 24*60 minutes in a day. so 720 m/day = 720 m/1440 minutes =1/2 m/minute thanks for your help my teacher has me screwed up.
April 12, 2007 by Elyssia

Chemistry
During the preparation of K3[Al(C2O4)3].3H2O, NaOH was added slowly and with stirring over an approximately 10-minute period to a solution of Al2(SO4)3 solution. The combined solution was heated to almost boiling and left to stand for a few minutes. 1. Why does NaOH added ...
March 22, 2010 by Alan

algebra
Mandi can be paid in one of two ways: Plan A-- A salary of $400 per month, plus a commission of 8% gross sales; or Plan B-- A salary of $610 per month, plus a commission of 5% of gross sales. For what amount of gross sales should Mandi select Plan A? I have no idea how to ...
January 24, 2009 by Gemma

pre algebra
you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate the expression if you...
November 17, 2010 by courtney

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