# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 392523: In 1992, the life expetancy of males in a certain country was 70.8 years. In 1998, it was 74.5 years. Let E represent the life expentancy in year t and let t represent the number of years since 1992. The linear function E(t) that fits the data is: Et=☐t + ☐ (round to the nearest tenth) Use the function to predict the life expectancy of males in 2009. E(17)=☐ (round to the nearest tenth) Click here to see answer by mananth(12269)

 Question 392569: A swimming pool is 2 meters deep, 6 meters wide, and 90 meters long. Water is pumped into the pool at a rate of 100 liters per minute. How many hours will it take to fill the pool? (Remember that there are 1000 liters in a cubic meter) Click here to see answer by fafa(13)

 Question 392573: A painter is paid 12 dollars per hour and can paint 8m^2 with a roller in this time. Renting a spray gun costs 5 dollars for each hour of use, and the painter can paint 20m^2 per hour with the spray gun. It takes 1/2 an hour for the painter to clean up after using the roller, but 1 hour using the spray gun. You must pay the painter for her time and you must also pay for renting the spray gun for the total amount of time (including clean up) the spray gun was needed. How much money do you save by using the spray gun on a paint job that involves painting 40m^2 Click here to see answer by mananth(12269)

 Question 392506: i am really no good at word problems please help elena bicycles 7 km/h faster than carlos. in the same time it takes carlos to bicycle 45 km, elena can bicycle 66 km. how fast does each bicyclist travel thank you Click here to see answer by mananth(12269)

 Question 392613: Kyanna used three pieces of ribbon, each 8 inches long, to make each hair bow for her craft project. Kyanna had a 200-foot spool of ribbon when she started. If no ribbon was wasted, which of the following represents the number of feet of ribbon that was left on the roll after she made the hair bows? Click here to see answer by ewatrrr(10682)

 Question 392614: The total cost of a car rental is the sum of (1) A basic fixed rental charge for the car; and (2) An additional charge for every 25 miles traveled. If the total cost to rent a car and drive it 50 miles is \$200 and the total cost to rent a car and drive it 200 miles is \$245, what is the total cost, in dollars to rent a car and travel 450 miles? Click here to see answer by ewatrrr(10682)

 Question 392861: Give an ordered pair u,v of numbers that satisfy the following equation. 4u+v=7 Click here to see answer by checkley79(3039)

 Question 393233: . Each exterior angle of a regular n-sided polygon measures . Find the value of n. Click here to see answer by Alan3354(30924)

 Question 393237: Find the coordinates of any points of intersection of the line y = x – 1 and the circle . Click here to see answer by Alan3354(30924)

 Question 393252: Amy is 1/4 of the age of John. Together their total age is 40. How old is Amy and John Click here to see answer by ewatrrr(10682)

 Question 393234: . Determine the coordinates of the points that divide the line segment joining C(8,1) and D(3,11) into 5 parts Click here to see answer by Alan3354(30924)

 Question 393235: Find the shortest distance from the point (-2,7) to the line 5x – 2y – 34 = 0. Round your answer to the nearest tenth. Click here to see answer by Alan3354(30924)

 Question 393275: If sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house together? I need step by step please i have been out of high school for 5 years and am trying to get into college. thanks Click here to see answer by stanbon(57203)
 Question 393275: If sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house together? I need step by step please i have been out of high school for 5 years and am trying to get into college. thanks Click here to see answer by solver91311(16868)
 Question 393275: If sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house together? I need step by step please i have been out of high school for 5 years and am trying to get into college. thanks Click here to see answer by Alan3354(30924)

 Question 393364: I'm trying to help a friend. I'm 50 yrs old and can't remember how to do this. What type of equation is this? And can you solve it? 16-(4m+9)=-5m-5+m+12 I know you have to do the same thing on each side of the equation. Click here to see answer by stanbon(57203)

 Question 393375: I'm having a hard time solving for x. I know you subtract 75 and then divide by 5. What do i do next? 5x^2+75=93 Click here to see answer by Alan3354(30924)
 Question 393375: I'm having a hard time solving for x. I know you subtract 75 and then divide by 5. What do i do next? 5x^2+75=93 Click here to see answer by rfer(12644)

 Question 393380: Translate into mathematical symbols(algebric expression). twenty divided by a number How would you write that I have tried 20/d is that correct? or woiuld it be d/20 How do you know what number or thing goes first. another one is half of a number? eleven more than the sum of thirty nine and a number. last one is four thimes the difference of twenty and a number thank you Click here to see answer by rfer(12644)

 Question 393417: Hi umm my question is write mathemetical symbols into algebric symbols A number minus seven i wrote f-7 is that correct two reduced by a number-I wrote- 2-g double a number and add three- 2n+3 divider a number by seven then add six-5'(21-y) Translate into english phrases 19-(3n)-three times a number subtract nineteen 12n+7- Twelve times a number plus seven 8 x (n+4)- A number plus four times eight writer algebric equation for each statement one half the number of students is 21- 1.5x=21 write an algebric equiation for each sentence a) the perimeter of a square is 156cm square has s on one side.- 156/4=39 39*4 Click here to see answer by stanbon(57203)

 Question 393410: f(x)= 4x-1 ; g(x)= 5x(sq.) Which is equal to (f *g) (x)? a. 80x(sq.) - 40x + 5 b. 20x(cubed) - 5x(sq.) c. 5x(sq.) + 4x - 1 d. 20x(sq.) - 1 Click here to see answer by edjones(7569)

 Question 393518: Im having alot of trouble with solving equations involving fractions and decimals. I've had alot of people help me but none seem to understand the consept either. Could you help me with 5.85b=8.68+3.68b and explain all your steps please? Thank you! Click here to see answer by edjones(7569)
 Question 393518: Im having alot of trouble with solving equations involving fractions and decimals. I've had alot of people help me but none seem to understand the consept either. Could you help me with 5.85b=8.68+3.68b and explain all your steps please? Thank you! Click here to see answer by ankor@dixie-net.com(15622)

 Question 393600: what is the vertex and equation of the axis of symmetry for the equation y=x^2+4x-6 ??? Click here to see answer by robertb(4012)

 Question 393659: Tom and Jerry together had 115. After tom had spent 10, his money was 3/4 that of jerry. How much did Jerry have? (Show your solution) Click here to see answer by mananth(12269)