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Question 458140: kirsten can type a 50-page paper in 8 hours. Last month kirsten and courtney,together,typed a 50-page paper in 6 hours. How long would it take courtney to type a 50-page paper on her own?
Click here to see answer by richwmiller(17219)

Question 458138: one watering system needs about 3 times as long to complete a job as another watering system. When both systems operate at the same time,the job can be completed in 9 minutes. How long does it take each system to do the job alone?
Click here to see answer by richwmiller(17219)

Question 458151: if the sides of a square are lengthned by 7 inches,the area becomes 121 in^2.find the length of a side of the original square.

Click here to see answer by edjones(8007)

Question 458151: if the sides of a square are lengthned by 7 inches,the area becomes 121 in^2.find the length of a side of the original square.

Click here to see answer by stanbon(75887)

Question 458190: a tank can be filled in 18 hours by pipe A or in 24 hours by pipe B.how long would it take both pipes to fill the tank?
Click here to see answer by richwmiller(17219)

Question 458201: the product of two consecutive intergers is 224

Click here to see answer by Alan3354(69443)

Question 458202: the reciprocal of 4 plus the reciprocal of 5 is the reciprocal of what number
Click here to see answer by richwmiller(17219)

Question 458152: a tank can be filled in 18 hours by pipe A or in 24 hours by pipe B. How long would it take both pipes to fill the tank?
Click here to see answer by josmiceli(19441)

Question 458163: the product of two consecutive even intergers is 224
Click here to see answer by Alan3354(69443)

Question 458204: if the sides of a square are lengthned by 7 inches,the area becomes 121 in^2. find the length of a side of the original square
Click here to see answer by oberobic(2304)

Question 458440: A certain factory products are made in vats that has a capacity to hold 70 quarts. Each bottle contains 10/51. how many bottles from each vat
Click here to see answer by rfer(16322)

Question 458438: A family has an anual income of $21,600 of this 1/4 for food 1/5 for housing 1/10 for clothing 1/9 savings, 1/4 for taxes. How much money is used for housing?
Click here to see answer by rfer(16322)

Question 458825: The difference of a number and 9 is 49 less the number. Find the number.
Click here to see answer by simranb(63)

Question 458832: The sum of 3, 6, and a number amounts to 13. Find the number.
Click here to see answer by simranb(63)

Question 459049: An apartment building contains 12 units consisting of one- and two-bedroom apartments that rent for $360 and $450 per month, respectively. When all units are rented, the total monthly rental is $4,950. What is the number of two-bedroom apartments?
A. 3
B. 4
C. 5
D. 6
E. 7
Click here to see answer by rfer(16322)

Question 459205: Solve. Please show the algebraic inequality you used and show all of your work.
In order for a chemical reaction to remain stable, its Celsius temperature must be no more than C. Find the Fahrenheit temperatures at which the reaction will remain stable. C + 32
Click here to see answer by richard1234(7193)

Question 459378: The weight of water is 62&1/2lb per cubic foot. What is the weight of 19&1/3 cubic feet of water?
Please and Thank You
Click here to see answer by MathLover1(20849)

Question 459757: Just wondering if this is just a basic addition problem or is there more to it. (4x^2 + 3x) + (4x + 5)
Click here to see answer by richwmiller(17219)

Question 460027: Hello. Referred to me by Minka.

A hardware supplier manufactures three kinds of clamps, types A, B, and C. Production restrictions force it to make 20 more tye C clamps than the total of the other types and twice as many type b clamps as type A clamps. The shop must produce 380 clamps per day. How many of each type are made per day?
How many type A clamps are produced?
How many type B clamps are produced?
How many type C clamps are produced?
Truly greatful to whom replies.
Samantha

Click here to see answer by MathLover1(20849)

Question 460033: Hello. Referred to me by Minka.
The function f(x) = 180x/100-x models the cost, f(x), in millions of dollars, to remove x% of a river's pollutants. If the government commits $60 million for this project, what percentage of the pollutants can be removed?
___% of the pollutants can be removed.
Truly greatful to whom replies.
Samantha
Click here to see answer by oberobic(2304)

Question 460032: Hello. Referred to me by Minka.
The polynomial 0.0013x^3 - 0.075x^2 + 1.5x + 11 models natural gas consumption in trillions of cubic feet, where x=0 corresponds to 1960, x=1 to 1961, and so on.
In which year between 1970 and 1990 was natural gas consumption about 23.1 trillion cubic feet?
Truly greatful to whom replies.
Samantha

Click here to see answer by MathLover1(20849)

Question 460029: Hello. Referred to me by Minka.
The cumulative number of car accidents from 2000 to 2010 can be modeled by the quadratic expression, C= -41x^2+1640x+15,744, where x=1 corresponds to 2000, x=2 corresponds to 2001, and so on until x=11 corresponds to 2010.
a) find the number of cumulative car accidents in 2005?
b) the number of car accidents reached 21,600 in about what year?
(round to the nearest whole number, please).
Truly greatful to whom replies.
Samantha

Click here to see answer by ankor@dixie-net.com(22740)

Question 460222: What number added to 73 is 201?
Translate to an equation. Do not solve.
Click here to see answer by richard1234(7193)

Question 460213: The sum of the box�s length and height

Click here to see answer by checkley79(3341)

Question 460663: Aliaba was arranging the carpets for the flying carpet brigade. They were going to fly in a rectangular formation. When he put 4 carpets in each row, he had 3 left over. When he put 5 carpets in each row, he had 1 left over. How many carpets could there have been in the carpet brigade?
Use more than one way to present your solution(s).
Click here to see answer by solver91311(24713)

Question 460729: 90 tropical fish were placed in an aquarium for the next 12 month.
12 month after the fish are first placed in the aquarium, what is the total number of fish?

Click here to see answer by stanbon(75887)

Question 460735: Please help.
If C dollars are deposited in an account paying r percent annual interest, the amount after x years is A=C(1+r)^x. Approximate the amount in the account after x years, when C=$100, r=15%, and x=17 years.
A = $?
Thanks.
Skyler
Click here to see answer by stanbon(75887)

Question 460738: Write the first four terms of the sequence for n = 1,2,3, and 4.
f(n)=5
a1 = ?
a2 = ?
a3 = ?
a4 = ?
Thank you Skyler
Click here to see answer by stanbon(75887)

Question 460741: Find the fourth term of the geometric sequence whose first term is 7 and whose common ratio is 3.
a4 = ?
Thanks Skyler
Click here to see answer by stanbon(75887)

Question 460742: 90 tropical fish were placed in an aquarium for the next 12 month.
one month after the fish are first placed in the aquarium, what is the total number of fish?

Click here to see answer by stanbon(75887)

Question 460902: There is a certain number of hens and rabbits in a room. The numbers of feet of the hens exceeds the number of feet of the rabbits by 12, while the number of heads of the hens exceeds the number of the rabbits by 28, then find:
a. the number of hens
b. the number of rabbits

Click here to see answer by edjones(8007)

Question 461277: Translation: 8 - n = 50, Eight less than a number is fifty.
What is the mistake in the translation?
Click here to see answer by htmentor(1343)

Question 461693: i can't stand ............. in queues.
a. wait b. waited c. waiting d. waits
Click here to see answer by rwm(914)

Question 462048: At the beginning of the month, Kate had $300 in her checking account. During the month she wrote 4 checks for $15.00, $27.00, $65.30 and $175.00. She also made a deposit in the amount of $230. What is Kate checking account balance and the end of the month?
Click here to see answer by rfer(16322)

Question 462144: When a person falls through the ice on a lake, the cold water removes body heat 25 times faster than air at the same temperature. To survive, a person has between 30 and 90 seconds to get out of the water. How long could a person remain in air at the same
Click here to see answer by rwm(914)

Question 462384: Use the five steps for problem solving to answer the following question. Please show all of your work.
Enrollment at a particular online university is 11,600. There are seven times as many students who work full time as there are students who do not. How many students work full time and how many do not?
Click here to see answer by stanbon(75887)

Question 463312: alpine college plans to increase tuition $50 each year. In 2003, the tuition was $375 per semester hour. Find the linear function that describes tuition as a function of time since 2003.
Click here to see answer by robertb(5830)

Question 464159: On three consecutive passes, a football team gains 10 yards, loses 11 yards, and gains 11 yards. What number represent the total net yardage?
Click here to see answer by ewatrrr(24785)

Question 464216: The number of weekly domestic violence arrest in an Urban area St. Louis increased from 102 in 2006 to 123 in 2009. Predict the number of weekly domestic violent in 2013.
Click here to see answer by richard1234(7193)

Question 464655: lori is concidering 2 different cellular telephone plans.
plan (a) has a monthly charge of $19.95 plus 33 cents per minute.
plan (b) has a monthly charge of $29.95 plus 10 cents per minute. how long would lori have to talk in a month for the two plans to have the same total cost?
Click here to see answer by rfer(16322)

Question 464994: The sum of 3 consecutive even integers in 6,000. what is the least integer of the three
Click here to see answer by Alan3354(69443)

Question 466906: Sharon invested money in a savings account at a rate of 6%simple interest. After 1 yr, she has $6996 in the account. How much did Sharon originally invest?
Click here to see answer by robertb(5830)

Question 466982: All 120 seats in a hall were filled for a concert. The tickets cost $10 for adults and $6 for students. Total proceeds were $980.How many adults attended?How many students attended
Click here to see answer by Gogonati(855)

Question 467019: You invested 14,000 in two accounts paying 6% and 9% annual interest, respectively. If the total interest earned for the year $900, how much was invested at each rate?
Click here to see answer by rfer(16322)

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