Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 172689: I really dont understand this problem can some pleas help me thank you
A business invests $10,000 in a savings account for two years. At the beginning of the second year, an additional $3500 is invested. At the end of the second year, the account balance is $15,569.75. What was the annual interest rate?
Click here to see answer by Mathtut(3670)  |
Question 172759: If an object is propelled upward from a 288 foot high tower at an initial velocity of 48 feet per second, then its height h(in feet) after t seconds is given by the equation h=-16t^2+48t+288. What is the maximum height reached by the object?
Click here to see answer by solver91311(24713)  |
Question 172694: A manufacturer charges $24 for stereo headphones and has been selling about 1000 a week. He estimates that for every $1 price reduction, 100 more headphones can be sold per week. (For example, he could sell 1100 headphones at $23 each and 1200 headphones at $22 each.)
a. Let 24-x be the reduced price per set of headphones. write a quadratic function that gives the total revenue recieved by the manufacturer in a week.
My work- would it be 24-1 I really don't understand a & b
b. What price will maxamize the total revenue?
Please explain
I would really appreciate any help
Thank you
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 172940: The so-called golden rectangle is said to be extremely pleasing visually and was used often by ancient Greek and Roman architects. The length of a golden rectangle is approximately 1.6 times the width. Find the dimensions of a golden rectangle if its area is 9000 m^2.
Click here to see answer by jojo14344(1513) |
Question 172956: I have been trying this problem and I am stuck and need help! my final is monday.
One positive integer is 7 less than twice another. The sum of their squares is 202. What are the integers? Define a variable. Set up a quadratic equation. Solve, show all your work.
If you could show me all the work too that would be great so I can know how to do it next time.
Thank you
Click here to see answer by Alan3354(69443)  |
Question 172956: I have been trying this problem and I am stuck and need help! my final is monday.
One positive integer is 7 less than twice another. The sum of their squares is 202. What are the integers? Define a variable. Set up a quadratic equation. Solve, show all your work.
If you could show me all the work too that would be great so I can know how to do it next time.
Thank you
Click here to see answer by stanbon(75887) |
Question 173033: Hi, we just started learning about quadratic equations today, and I found some problems that I needed help with.
Define a variable and write a quadratic function to describe each situation.
30. the product of two numbers whose sum is 45
31. the area of a circle in terms of its radius
32. the product of two numbers whose difference is 15
any help would be appreciated, thank you!
Click here to see answer by Alan3354(69443) |
Question 173145: I'm not sure I understand what they are asking us to do for this problem. Evaluate the discriminant b^2 - 4ac. Then use the answer to state how many real-number solutions exist for the equation.
y = x^2 + 8x + 16
Click here to see answer by Alan3354(69443) |
Question 173140: Help! My final is on Monday and I can't figure out this word problem. Please write it out step by step so I will be able to do it on the final. Thank you.
The height of a triangle is 8 centimeters greter than the base. The area of the triangle is 90 square centimeters. Find the length of the base and height of the triangle. Define a variable. Set up a quadratic equation. Solve. Show all work.
I'm really stuck, I thought I knew it but I've been at it most of the day.
Click here to see answer by jim_thompson5910(35256) |
Question 173140: Help! My final is on Monday and I can't figure out this word problem. Please write it out step by step so I will be able to do it on the final. Thank you.
The height of a triangle is 8 centimeters greter than the base. The area of the triangle is 90 square centimeters. Find the length of the base and height of the triangle. Define a variable. Set up a quadratic equation. Solve. Show all work.
I'm really stuck, I thought I knew it but I've been at it most of the day.
Click here to see answer by josmiceli(19441)  |
Question 173164: a fanner has three fields of equal size and pays each of his workmen 60 pesos per day.He paid a total of 450 pesos to the workmen after each,working alone,plowed on the field.these workmen together,plowed the third field in 1 13/15 days.how many days did it take each man to plow a field alone?
Click here to see answer by stanbon(75887) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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