# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 196736: I need help to find the beginning equation the following word problem-Junior's boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, then what is the speed of the current? Click here to see answer by stanbon(57219)

 Question 196692: I'm coming up with the incorrect answer to the following problem. Can you assist me? A large pond is stocked with fish. The fish population P is modeled by the formula P = 4t + 8√t + 110, where t is the number of days since the fish were first introduced into the pond. How many days will it take for the fish population to reach 500? thanks! Click here to see answer by scott8148(6628)

 Question 196828: I'm having some trouble with this interval. I came up with the answer: (-INFINITY,-8) but it comes up that -INFINITY is incorrect. Can you help me? -3x+16<-6x-8 thanks! Click here to see answer by Mathtut(3670)
 Question 196828: I'm having some trouble with this interval. I came up with the answer: (-INFINITY,-8) but it comes up that -INFINITY is incorrect. Can you help me? -3x+16<-6x-8 thanks! Click here to see answer by jim_thompson5910(28476)

 Question 196827: I'm having some trouble with this interval. I came up with the answer: (-INFINITY,-8) but it comes up that -INFINITY is incorrect. Can you help me? -3x+16<-6x-8 thanks! Click here to see answer by Mathtut(3670)

 Question 196819: Hello! I've been having some trouble with the following word problem A large pond is stocked with fish. The fish population P is modeled by the formula P = 4t + 8√t + 110, where t is the number of days since the fish were first introduced into the pond. How many days will it take for the fish population to reach 500? thanks! Click here to see answer by jim_thompson5910(28476)

 Question 196851: Express the sum of a over 3 and a over 4 as a single fraction in simplest form. Click here to see answer by checkley77(12569)

 Question 196855: Solve for y: 9 over y+1 equals 3/5. Click here to see answer by ankor@dixie-net.com(15624)

 Question 196937: I know I have to get the variable by itself, but I can't figure out how. Click here to see answer by Edwin McCravy(8879)

 Question 197002: Please find the area of the circle. The diameter is 12 inches. Use A= pie r squared. thank you Click here to see answer by Alan3354(30959)

 Question 197020: If x represents an even integer, which expression also represents an even integer? 1. 2x+1 2. 2x 3. x+1 4. x-1 Click here to see answer by Edwin McCravy(8879)

 Question 197031: 1. write an equation y=kz when x=2 y=6 k= equation= find y if x=4 Click here to see answer by anantha(86)

 Question 197044: 4 times a number decreased by 11 is 25. Find the number 4x-11=25------(1) or 4x-11+11=25+11------(2) ==> 4x=36 ==> Click here to see answer by mathsteacher(28)

 Question 197058: I'm trying to solve an equation for 4y+3=11? Click here to see answer by nerdybill(6948)

 Question 197059: Hi! I've come up with one point for the following problem but the other problem t says its incorrect. Can you check this problem for me? Find the point that is one-fourth of the distance from the point P(-7, 3) to the point Q(7, 2) along the segment PQ. Click here to see answer by solver91311(16868)

 Question 197032: 2. write an equation using z=kxz x=-3, y=6, z=18 k= equation= find z if x=4, y=7 Click here to see answer by Mathtut(3670)

 Question 197056: I'm having some trouble with the following problem, I think I'm missing a step somewhere. Find the lengths of the medians of the triangle with vertices A(1, 3), B(3, 5), and C(7, 1). (A median is a line segment from a vertex to the midpoint of the opposite side.) Give your answers correct to one decimal place. ?=units (length of median AA') ?=units (length of median BB') ?=units (length of median CC') thanks! Click here to see answer by solver91311(16868)

 Question 196971: Jim's nephew owns a triangular plot of land. The perimeter fence that surrounds the land measures 121 feet. The shortest side is 15 feet longer than one-half of the longest side. The second longest side is 4 feet shorter than the longest side. What is the length of each side? I don't know where to start to make it into a equation. Click here to see answer by ankor@dixie-net.com(15624)