Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 1061430: please help i got my portfolio to be handed in tomorrow by 2pm and I missed a class on parabolas i need to find the x intercept and y intercept, can someone please help me? f(x) = 4x^2 + 4x + 6
Click here to see answer by josmiceli(19441) About Me 

Question 1061419: A climbing club planned an expedition. The total cost was $900, which was to be divided equally among the members going. While practicing, three members fell and were injured so they were unable to go. If the cost per person increased by $15, how many people were originally supposed to go?
(If you can show step by step that would be fantastic!)

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Question 1061506: Solve the following equation by first doing a substitution to make it a quadratic.
(3x-5)^2 + (3x-5) - 2 = 0

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Question 1061504: Solve the following equation by first doing a substitution to make it a quadratic.
3x^-2 + x^-1 -24=0

Click here to see answer by josgarithmetic(39616) About Me 
Question 1061504: Solve the following equation by first doing a substitution to make it a quadratic.
3x^-2 + x^-1 -24=0

Click here to see answer by MathTherapy(10551) About Me 

Question 1061505: Solve the following equation by first doing a substitution to make it a quadratic.
x^4 - 7x^2 + 10 =0

Click here to see answer by rothauserc(4718) About Me 
Question 1061505: Solve the following equation by first doing a substitution to make it a quadratic.
x^4 - 7x^2 + 10 =0

Click here to see answer by ikleyn(52776) About Me 

Question 1061503: Solve the following equation by first doing a substitution to make it a quadratic.
(x+7)^2 + 5(x+7) -50=0

Click here to see answer by josmiceli(19441) About Me 

Question 1061530: A coin is tossed downward with an initial velocity of 30 m/sec from an altitude of 75m. Approximately how long does it take the ball to reach the ground? use 4.9t^2+v0t=s
Click here to see answer by Alan3354(69443) About Me 

Question 1061579: A positive real number is 4 more than another. If the sum of the squares of the two numbers is 44, find the numbers.
Click here to see answer by jorel555(1290) About Me 

Question 1061595: You have a $25 dollar coupon. You save three dollars. What was the original cost of the meal?
Click here to see answer by Alan3354(69443) About Me 

Question 1061651: f(x)=2x²-4x
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Question 1061660: is it true that : between two consecutive roots of f'(x)=0,f(x) = 0 must have one root
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Question 1061736: a landscape architect is designing a rectangular flowerbed to be border with 28 plants that are placed 1 meter apart. He needs an inner rectangular space in the center for plants that must be 1 meter from the border of the bed and that require 24 square meters for planting. What should the overall dimensions of the flowerbed be?
how should i tackle this kind of problem when solving?
thank you!!!

Click here to see answer by josmiceli(19441) About Me 

Question 1061745: What is the least number of zeros of quadratic equation, when coefficients are real
Click here to see answer by stanbon(75887) About Me 
Question 1061745: What is the least number of zeros of quadratic equation, when coefficients are real
Click here to see answer by ikleyn(52776) About Me 

Question 1061381: Amy runs a bike rental business. She currently charges $36 per bike
rental and averages 60 rentals a week for an average weekly income of
$2,160. She predicts that she may lose 2 rentals a week for every onedollar
increase in the rental price, p. Amy writes the expression
-2p^2- 12p+ 2160 2 to model her prediction. Which of the following is
the equivalent expression to reveal the maximum income based upon
Amy's model?
A.- 2(p+ 3)^2+ 2178
B. -2(p+ 6)^2 +2160
C. -2(p- 3)^2+ 2178
D.- 2(p- 6)^2+ 2142

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Question 1061951: sum of ages of son and his father is 35 and the product is 150 find the ages
Click here to see answer by Cromlix(4381) About Me 

Question 1062075: f(x)=x2-2x-8
Click here to see answer by Alan3354(69443) About Me 

Question 1062134: the roots are -3 and 7

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Question 1062161: A box with no top is to be constructed from a piece of cardboard whose length measures 17 in. more than its width. The box is formed by cutting squares that measure 5 in. on each side from the four corners and then folding up the sides.
If the volume of the box will be 300 in^3 what are the dimensions of the piece of ​ cardboard?
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Click here to see answer by math_helper(2461) About Me 
Question 1062161: A box with no top is to be constructed from a piece of cardboard whose length measures 17 in. more than its width. The box is formed by cutting squares that measure 5 in. on each side from the four corners and then folding up the sides.
If the volume of the box will be 300 in^3 what are the dimensions of the piece of ​ cardboard?
Image and video hosting by TinyPic

Click here to see answer by addingup(3677) About Me 
Question 1062161: A box with no top is to be constructed from a piece of cardboard whose length measures 17 in. more than its width. The box is formed by cutting squares that measure 5 in. on each side from the four corners and then folding up the sides.
If the volume of the box will be 300 in^3 what are the dimensions of the piece of ​ cardboard?
Image and video hosting by TinyPic

Click here to see answer by MathTherapy(10551) About Me 

Question 1062166: Find three consecutive positive odd integers such that the sum of the squares of the first and second integers is equal to the square of the third integer plus 9.
Click here to see answer by Alan3354(69443) About Me 
Question 1062166: Find three consecutive positive odd integers such that the sum of the squares of the first and second integers is equal to the square of the third integer plus 9.
Click here to see answer by math_helper(2461) About Me 

Question 1062167: The formula d equals d=16t^2 is​ Galileo's formula for freely falling objects. The distance d in feet an object falls depends on the time elapsed t in seconds. Use​ Galileo's formula and complete the following table.
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Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 1062176: Find three consecutive odd positive integers such that 5 times the sum of all three is 60 more than the product of the first and second integers.
The smallest odd integer is ___.
The next consecutive odd integer is ____.
The third consecutive odd integer is ____.

Click here to see answer by josgarithmetic(39616) About Me 
Question 1062176: Find three consecutive odd positive integers such that 5 times the sum of all three is 60 more than the product of the first and second integers.
The smallest odd integer is ___.
The next consecutive odd integer is ____.
The third consecutive odd integer is ____.

Click here to see answer by MathTherapy(10551) About Me 

Question 1062177: While hovering near the top of a waterfall in a national park at 5184 ​feet, a helicopter pilot accidentally drops his sunglasses. The height h(t) of the sunglasses after t seconds is given by the polynomial function h(t)=-16t^2 + 5184. When will the sunglasses hit the​ ground?
The sunglasses will hit the ground after ___ seconds.

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Question 1062170: The length of the top of a table is 3 m greater than the width. The area is 88 m^2. Find the dimensions of the table.
The width of the table is ___ m.
The length of the table is ___ m

Click here to see answer by ikleyn(52776) About Me 
Question 1062170: The length of the top of a table is 3 m greater than the width. The area is 88 m^2. Find the dimensions of the table.
The width of the table is ___ m.
The length of the table is ___ m

Click here to see answer by Alan3354(69443) About Me 

Question 1062218: An aquarium holding African cichlids is 2 inches higher than it is wide. Its length is 29 ​inches, and its volume is 10440 cubic inches.
What are the height and width of the​ aquarium?
Height= ___ inches.
Width ____ inches.

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Question 1062294: A shopkeeper orders a number of sunglasses for which he pays $300. As they are being unpacked, 10 get broken. By selling each sunglass at $4 more than he paid for it, he manage to get a profit of $100. How many glasses did he originally order?
Click here to see answer by josgarithmetic(39616) About Me 

Question 1062337: A parabolic bridge is built across the water. It is 50m long, and its highest point is 4.5m high.
a)What is the equation of the graph, where y= The height above the water, and x=the horizontal distance from the origin.
b)A floating platform 20m wide is towed under the bridge. What is the greatest height of the deck above water level if the platform is to be towed under the bridge with at least 30cm horizontal clearance on either side.
Any help would be appreciated :)

Click here to see answer by josgarithmetic(39616) About Me 
Question 1062337: A parabolic bridge is built across the water. It is 50m long, and its highest point is 4.5m high.
a)What is the equation of the graph, where y= The height above the water, and x=the horizontal distance from the origin.
b)A floating platform 20m wide is towed under the bridge. What is the greatest height of the deck above water level if the platform is to be towed under the bridge with at least 30cm horizontal clearance on either side.
Any help would be appreciated :)

Click here to see answer by josmiceli(19441) About Me 

Question 1062357: Please i would like assistance with the following question: A company that manufactures flashlights has the following price-demand equation: p=d(x)=9.3-0.15x, where x is the number of flashlights (in thousands) that the company can sell at price $p. Find the price that maximizes the company revenue from the sale of flashlights.
Click here to see answer by stanbon(75887) About Me 

Question 1062459: The area of a circle with radius r is given by the formula A=πr^2. If a circle has area 64π square​ inches, what is the​ radius?
Click here to see answer by ikleyn(52776) About Me 

Question 1062458: The formula A=P(1+r)^2 gives the amount A in dollars that P dollars will grow to in 2 years at interest rate (where r is given as a decimal), using compound interest. What interest rate will cause $5000 to grow to $ 5356.13 in 2​ years?
Click here to see answer by josmiceli(19441) About Me 

Question 1062490: Find two positive numbers which have a difference of 5 and whose product is 84
Click here to see answer by Alan3354(69443) About Me 

Question 1062462: Solve for the indicated letter.
S = xA^2 + mA, for A
A =

Click here to see answer by josgarithmetic(39616) About Me 

Question 1062481: determine a possible quadratic function for points (2,7), (3,5) and (5,13).
Click here to see answer by josgarithmetic(39616) About Me 
Question 1062481: determine a possible quadratic function for points (2,7), (3,5) and (5,13).
Click here to see answer by Alan3354(69443) About Me 

Question 1062509: Solve for the indicated letter.
s = xA^2 + mA, for A
A= ___

Click here to see answer by Edwin McCravy(20054) About Me 

Question 1062512: Image and video hosting by TinyPic
Image and video hosting by TinyPic

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Question 1062561: Given the functions h(x) = 12x + 3 and f(x) = x^2, which value of x makes h(x) = f(x)?
a) 0
b) 1
c) 2
d) 3

Click here to see answer by math_helper(2461) About Me 

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