Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 144442: On this problem, just like the other, i don't understand how you can have the solution equal to zero. It says that i need to use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. How do i determine the number and types of solutions. For this equations 2x2 - 10x + 25 = 0. Please help me someone.
Click here to see answer by nabla(475) |
Question 144532: I need help solving this word problem which I'm supposed to solve using a quadratic equation. Any help would be appreciated. thanks.
A designer attempts to arrange the characters of his artwork in the form of a square grid with equal numbers of rows and columns, but finds that 24 characters are left out. When he tries to add one more row and column, he finds that he has 25 too few characters. Find the number of characters used by the designer.
Click here to see answer by Alan3354(69443)  |
Question 144530: I need help with this word problem: The instructions are to use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.
Steve traveled 200 miles at a certain speed. Had he gone 10mph faster, the trip would have taken 1 hour less. Find the speed of his vehicle.
Any help would be appreciated. Thanks.
Click here to see answer by Alan3354(69443)  |
Question 144531: I need help with this word problem: The instructions are to use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.
The Hudson River flows at a rate of 3 miles per hour. A patrol boat travels 60 miles upriver, and returns in a total time of 9 hours. What is the speed of the boat in still water?
Any help would be appreciated. Thanks.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 144570: On this word problem, i guess i need to turn this into a quadratic expression and solve, but i only thought that you solved word problems from linear equations. i have no idea how this is even done. i would try it on my own if i knew where to begin. If someone can get me started i will glady finish it so i can learn. Thank you.
Steve traveled 200 miles at a certain speed. Had he gone 10mph faster, the trip would have taken 1 hour less. Find the speed of his vehicle.
Click here to see answer by jim_thompson5910(35256) |
Question 144572: Sorry, but here's another word problem and i can barely do those that are already in equation form. The Hudson River flows at a rate of 3 miles per hour. A patrol boat travels 60 miles upriver, and returns in a total time of 9 hours. What is the speed of the boat in still water?
Click here to see answer by checkley77(12844) |
Question 144734: One of my biggest problems in algebra is figuring how to turn a word problem into a solution so that i can solve it. For instance, A rectangular parking lot is 50 ft longer than it is wide. Determine the dimensions of the parking lot if it measures 250 ft diagonally.
Click here to see answer by crystel(1) |
Question 144734: One of my biggest problems in algebra is figuring how to turn a word problem into a solution so that i can solve it. For instance, A rectangular parking lot is 50 ft longer than it is wide. Determine the dimensions of the parking lot if it measures 250 ft diagonally.
Click here to see answer by jim_thompson5910(35256) |
Question 144908: I need some help setting up these two questions as a quadratic equation that makes sense in the solution. Please help!
A rectangular parking lot is 50 ft longer than it is wide. Determine the dimensions of the parking lot if it measures 250 ft diagonally.
Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three integers.
Click here to see answer by Edwin McCravy(20054)  |
Question 144909: I need some help with this word problem. Any help would be greatly appreciated. Thanks.
A photo is 3 inches longer that it is wide. A 2-inch border is placed around the photo making the total area of the photo and border 108in2. What are the dimensions of the photo?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 144909: I need some help with this word problem. Any help would be greatly appreciated. Thanks.
A photo is 3 inches longer that it is wide. A 2-inch border is placed around the photo making the total area of the photo and border 108in2. What are the dimensions of the photo?
Click here to see answer by jojo14344(1513) |
Question 144992: investment problem.... richard inherited 15,000 dollars and invester it in two municial bonds. which pay 7% and 9% simple interest. the annual interest is 1,230.00 find the amount invested at each rate.
amount invested at 7% _______
amount invested at 9% _______
Click here to see answer by vleith(2983) |
Question 145001: Use the quadratic formula to find the solutions to the quadratic equation below. Check all that apply.
3x^2 - x - 2 = 0
A. - 2/3 (both are negative)
B. -1
C. 3/2
D. -4/5 (only 4 is negative)
E. 1
F. 5/4
Click here to see answer by vleith(2983) |
Question 144872: 4. Your profit P is determined by subtracting the cost C (the amount of money it costs to operate a business) from the revenue R (the amount of money you earn from selling your product). Profit can be represented algebraically by the equations:
Profit=Revenue-Cost
OR
P = R - C
a) Rewrite the formula to solve for C.
b) Suppose your profit for one day is $1,281, and the cost of running the business for the day is $1,463. What is the revenue for that day? Explain your answer.
Click here to see answer by solver91311(24713)  |
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