Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 1029358: Use quadratic formula and a calculator to solve. Round decimal approximations to the nearest hundredth.
Find two integers such that the larger is 2 less than eight times the smaller and the difference of their squares is 884
Click here to see answer by Theo(13342)  |
Question 1029414: In which two points are the solutions to this quadratic equation whose related quadratic function is graphed in the link below?
Graph: http://postimg.org/image/yy8qfsdkn/
A.) Between -1 and 0 and between -2 and -3
B.) Between 2 and 3 and between 3 and 4
C.) Between -1 and 0 and between 3 and 4
D.) Between -1 and 0 and between 2 and 3
Click here to see answer by Fombitz(32388)  |
Question 1029500: Explain how a quadratic function models a free fall ride. Be sure to include a graph showing the height at any given time of a free fall ride that lifts riders to a height of 185 feet, and explain how to use this graph to estimate how long the riders would be in free fall if the ride were allowed to hit the ground before stopping.
Click here to see answer by josmiceli(19441)  |
Question 1029552: The New River Gorge Bridge in West Virginia is the second longest steel arch bridge in the world. Its height above the ground, in feet, at a point x feet from the arch's center is
(a) What is the height of the top of the arch?
The height of the arch is ____ feet.
(b) What is the span of the arch at a height of 525 feet above the ground?
Round your answer to the nearest integer.
The span of the arch is ____ feet.
Click here to see answer by josmiceli(19441)  |
Question 1029553: The length of a rectangular swimming pool is twice its width. The pool is surrounded by a walk that is 2 feet wide. The area of the region consisting of the pool and the walk is 1056 square feet.
(a) Use the method of completing the square to determine the dimensions of the swimming pool.
The length of the pool is ____ feet, and the width of the pool is ____feet.
(b) If the material for the walk costs $8 per square foot, how much would the material cost for the entire walk?
The material would cost $____ .
Click here to see answer by josgarithmetic(39613) |
Question 1029167: Use quadratic formula and a calculator to solve. Round decimal approximations to the nearest hundredth.
Find two integers such that the larger is 2 less than eight times the smaller and the difference of their squares is 884.
Click here to see answer by LinnW(1048)  |
Question 1029997: Write a quadratic equation in standard form with the given solutions.
The hypotenuse of a right triangle measures 8 in. More than one leg and 3 in. More than the other leg. Find the lengths of the sides of the triangle ( to the nearest tenth of an inch).
Click here to see answer by mananth(16946)  |
Question 1030133: The length of a rectangular swimming pool is twice its width. The pool is surrounded by a walk that is 2 feet wide. The area of the region consisting of the pool and the walk is 1056 square feet.
(a) Use the method of completing the square to determine the dimensions of the swimming pool.
The length of the pool is ____ feet, and the width of the pool is ____feet.
(b) If the material for the walk costs $8 per square foot, how much would the material cost for the entire walk?
The material would cost $____ .
Click here to see answer by josmiceli(19441)  |
Question 1030164: For the equation X2-13x=30, I got the answer (x-15)(X+2)by setting to zero so that: X squared -13x=30 becomes X squared -13x-30=0.
I found that -15 times 2 equals 30, and -15 plus 2 = -13. when I checked the answer, it said that X= -2 and X+15. Why isn't it 2 and -15?
Help, please?
Click here to see answer by stanbon(75887) |
Question 1030164: For the equation X2-13x=30, I got the answer (x-15)(X+2)by setting to zero so that: X squared -13x=30 becomes X squared -13x-30=0.
I found that -15 times 2 equals 30, and -15 plus 2 = -13. when I checked the answer, it said that X= -2 and X+15. Why isn't it 2 and -15?
Help, please?
Click here to see answer by Cromlix(4381)  |
Question 1030134: Please help, I am completely stuck:
A diver jumps off a diving board that is 10 ft above the water at a velocity of 12 ft/sec. His height, s , in feet, above the water can be modeled by .
(a) How long is the diver in the air before he hits the water?
Enter the exact answer.
The diver is in the air for ____ seconds.
(b) What is the maximum height achieved and when does it occur?
Enter the exact answers.
The maximum height is ____ feet, and it occurs after ____seconds.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1030179: A diver jumps off a diving board that is 10 ft above the water at a velocity of 12 ft/sec. His height, s , in feet, above the water can be modeled by
(a) How long is the diver in the air before he hits the water?
Enter the exact answer.
The diver is in the air for ____ seconds.
(b) What is the maximum height achieved and when does it occur?
Enter the exact answers.
The maximum height is ____ feet, and it occurs after ____seconds.
Click here to see answer by KMST(5328)  |
Question 1030574: For each quadratic function, state the vertex and then graph the function
The cost equation used by the R & E Manufacturing Co. Is C(h) =2h^2 - 8h + 12, where h is the number of hours it takes to produce a particular product and C(h) Isa the cost of procuction in hundreds of dollars. What is the minimum cost possible?
Click here to see answer by stanbon(75887) |
Question 1030562: For each quadratic function, state the vertex and then graph the function
Julie wants to place 44 ft of picket fencing around a garden so as to create the largest rectangular area possible.
A.) If x represents the width, write an algebraic expression that represents the length
B.) Write a function rule, f(x), that models the area of the garden
C.) What is the minimum point on the parabola?
D.) Find the dimensions of the garden with the maximum area
E.) What is the maximum area?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1030616: Mikayla went on a 48 mile trip to a soccer game. On the way back, due to road construction she had to drive 24 miles per hour slower. This made the trip take 1 hour longer. How fast did she drive to the soccer game?
Click here to see answer by mananth(16946)  |
Question 1030625: A diver dives into a swimming pool from the diving board. His height in feet is given by y(t) = −16t2 + 32t + 20, where t is the time in seconds. The horizontal distance in feet of the diver from the diving board is given by x(t) = 2t. What horizontal distance will the diver travel before he hits the water?
Click here to see answer by josmiceli(19441)  |
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