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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 143675: Simplify Click here to see answer by jim_thompson5910(28476)

 Question 143673: == Click here to see answer by oscargut(891)

 Question 143781: A man wanted to get into his work building, but he had forgotten his code. However, he did remember five clues. These are what those clues were: The fifth number plus the third number equals fourteen. The fourth number is one more than the second number. The first number is one less than twice the second number. The second number plus the third number equals ten. The sum of all five numbers is 30. What were the five numbers and in what order? Click here to see answer by ankor@dixie-net.com(15625)

 Question 144077: Use 3.14 for the value of , and round your answers to two decimal places, where applicable. A rectangle is 11 inches long and 7 inches wide. What is its area? Click here to see answer by checkley77(12569)

 Question 144173: name the coordinate described here: From the origin, the point is six places to the right and five places up. Click here to see answer by stanbon(57224)

 Question 144171: fill in the chart given this linear equation: y=-7x-4 Click here to see answer by HyperBrain(694)

 Question 144252: Convert to a exponential equation. In 4a=1.9 A) 1.9e=4a B) e1.9=4a C) ea=1.94 D) e4=1.9a Click here to see answer by jim_thompson5910(28476)

 Question 144265: A certain radioactive isotope decays at a rate of 0.1% annually. Determine the half-life of this isotope, to the nearest year. Click here to see answer by stanbon(57224)

 Question 144261: There are currently 50 million cars in a certain country, decreasing by 4.9% annually. How many years will it take for this country to have 27 million cars? Round to the nearest year. Click here to see answer by stanbon(57224)

 Question 144615: simplify. * Click here to see answer by nabla(475)
 Question 144615: simplify. * Click here to see answer by shahid(44)

 Question 144658: In 2005, a school was given a sum of \$6000. 20% was spent on stationery, 70% on photocopying and the rest on cleaning services. In 2006, the sum was increased. the school spent the same amount of money on stationery and increased its spending on photocopying by \$975. It spent the remaining 15% on cleaning services. By what percentage was the sum given to the school increased? *PLS TRY NOT TO USE ALGEBRA Click here to see answer by edjones(7569)
 Question 144658: In 2005, a school was given a sum of \$6000. 20% was spent on stationery, 70% on photocopying and the rest on cleaning services. In 2006, the sum was increased. the school spent the same amount of money on stationery and increased its spending on photocopying by \$975. It spent the remaining 15% on cleaning services. By what percentage was the sum given to the school increased? *PLS TRY NOT TO USE ALGEBRA Click here to see answer by Edwin McCravy(8880)

 Question 144657: MR RAVI LEFT HOME AT 3.15PM. AND WENT TO THE JOHOR BARU FERRY TERMINAL IN MALAYSIA BY TAXI. HALF HOUR LATER, MRS RAVI LEFT HOME AND DROVE TOWARDS THE JOHOR BARU FERRY TERMINAL AT AN AVERAGE SPEED OF 60KM/H. WHEN SHE REACH THE FERRY TERMINAL AT 6.15PM, MR RAVI WAS 15KM FROM THE FERRY TERMINAL. (A)FIND MR RAVI'S AVERAGE SPEED. (B)WHEN WILL MR RAVI REACH THE FERRY TERMINAL. *PLS TRY NOT TO USE ALGEBRA Click here to see answer by scott8148(6628)

 Question 144703: It's from Lesson 35 in my Algebra Book. I've tried and tried but I always second guess myself. e) Simplify (factor if necessary): (6r^2st^3 - 9rs^2t^2/3rst) Click here to see answer by solver91311(16868)

 Question 144704: Solve the equation -3(5-y)+2^4=18y I have a question. I put this equation in the simplifier...does the -y necessarily have to go in front of the 5? If so why? Click here to see answer by solver91311(16868)
 Question 144704: Solve the equation -3(5-y)+2^4=18y I have a question. I put this equation in the simplifier...does the -y necessarily have to go in front of the 5? If so why? Click here to see answer by jim_thompson5910(28476)

 Question 144772: The product of two consecutive odd whole numbers is 143. Find the numbers Click here to see answer by nabla(475)

 Question 144815: Solve: (for w) 5-5w+x=0 Click here to see answer by jim_thompson5910(28476)

 Question 144814: Calculate: 5x-(1/2) if 2x+3=19 Click here to see answer by vleith(2825)

 Question 144825: 4(1/3) + 1(1/2) = 2(1/6) Click here to see answer by Alan3354(30968)

 Question 145062: the ratio of the number of Grace's Lego bricks to the number of Bobby's Lego bricks was 5:2. the ratio became 9:19 when Grace gave Bobby 220 bricks. a)how many lego bricks had Bobby at first? b)what fraction of Bobby's lego bricks was from Grace? (give answer in simplest form) *pls try not to use algebra Click here to see answer by jojo14344(1512)

 Question 145252: write an equation of the line containing the given point and parallel to the given line (6,-8); 2x-9y=4 Click here to see answer by nerdybill(6948)
 Question 145252: write an equation of the line containing the given point and parallel to the given line (6,-8); 2x-9y=4 Click here to see answer by Alan3354(30968)

 Question 145260: Find an equation of the line having the given slope and contaning the given point. m=0,(0,-6) I came up with this y-6=0x-0 but I know this can not be right! Click here to see answer by nerdybill(6948)

 Question 145259: Find an equation of the line having the given slope and contaning the given point. m=0,(0,-6) I came up with this y-6=0x-0 but I know this can not be right! Click here to see answer by Alan3354(30968)

 Question 145251: Write an equation of the line containing the givn point and parallel to the given line. Express your answer in the form y=mx+b (-7,8); 7x=5y+2 Click here to see answer by Alan3354(30968)

 Question 145254: Given the function h described by h(x)=x+5 find each of the following h(0) h(-8) h(-3) h(7) h(c+14) Click here to see answer by Alan3354(30968)

 Question 145289: What is percentage? Click here to see answer by stanbon(57224)

 Question 145551: If John gives Haiz \$7, they will have the same amount of money. If Haiz gives John \$7, the ratio of the amount of money he has to the ratio of the money John has will be 1:2. How much money has each of them at first? Click here to see answer by ankor@dixie-net.com(15625)

 Question 145553: For every shirt a tailor makes for a shop, he earns \$40. On the other hand, for every shirt that he damages, he will have to pay the shop \$15. Last week, for every 30 shirts he made, he damaged 5 shirts. He earned \$64.75 from the shirts he made. (a) How many good shirts were made last week? (b) How much less money did he earn because of the damage shirt? Click here to see answer by ankor@dixie-net.com(15625)

 Question 145703: The sum of a number and its square is 12. Find the number. Click here to see answer by stanbon(57224)

 Question 146158: I am going to choose 6 students out of the 15 who currently have A's to be mentors for the students who have C's or lower. How many ways can a group of 6 be selected? Click here to see answer by vleith(2825)

 Question 146352: Use either the fundamental counting principle or the permutation formulas (or both) to answer the following: The Board of Directors does not have assigned seats in the conference room. If there are 12 of them, seated at a round table, how many different seating arrangements are possible? Click here to see answer by aswathytony(47)

 Question 146514: Solve: 4(1/3)x+1(1/2)=2(1/6) Click here to see answer by jim_thompson5910(28476)

 Question 146706: i know this ha nothing to do with algebra but i figuered why not give it a try if someone may know this can u show me how step by step a circle has a chord of length 8 that is tangent to a smaller, concentric circle. find the area between the circles? A.16pie B.9pie C.24pie D.36pie E.n/a Click here to see answer by jim_thompson5910(28476)

 Question 146711: can someone please tutor me with this problem ive been trying to solve with my parents find the shortest distance between the parallel lines with equations 5x-12y+33=0 and 5x-12y-6=0 Click here to see answer by edjones(7569)

 Question 146717: find the equation of a circle with radius 5 and centered at (3,-1)? thanks!!! Click here to see answer by jim_thompson5910(28476)

 Question 146718: please help me which conic section is represented by the equation 4x^2-4xy+y^2+4x-2y+1=0 A.ellipse B.2lines C.hyperbola D.1 line E.n/a Click here to see answer by Edwin McCravy(8880)

 Question 147055: find the shortest distance between the parallel lines with equations 5x-12y+33=0 and 5x-12y-6=0 PLEASE HELP!!! Click here to see answer by edjones(7569)
 Question 147055: find the shortest distance between the parallel lines with equations 5x-12y+33=0 and 5x-12y-6=0 PLEASE HELP!!! Click here to see answer by bucky(2189)

 Question 146924: find the shortest distance between the parallel lines with equations 5x-12y+33=0 and 5x-12y-6=0 Click here to see answer by edjones(7569)

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