Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 69720: Question: "A designer, attempting to arrange the characters of his artwork in the form of a square grid with equal number of rows and columns, found that 24 characters were left out? When he tried to add one more row and column, he found that he was short of 25 characters. Can you find the number of characters used by the designer?"
Gracias!
Click here to see answer by stanbon(75887)  |
Question 69718: Guidance it needed with this problem please.
"Some students planned for a get-together. The budget for food was $500. Five of the students failed to come because of the distance and therefore the cost of food for each member increased by %5. How many students attended the get-together?"
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 70598: Hi, I'm studying for a test, and I need help with this problem.
Find all real solutions (a,b are positive constants)
I know that it needs to be solved by factoring, completing the square, or the quadratic formula, but don't know where to start.
Thanks!
Click here to see answer by Earlsdon(6294) |
Question 70598: Hi, I'm studying for a test, and I need help with this problem.
Find all real solutions (a,b are positive constants)
I know that it needs to be solved by factoring, completing the square, or the quadratic formula, but don't know where to start.
Thanks!
Click here to see answer by checkley75(3666) |
Question 70794: Solve the equation by extracting square roots:
(x +5)^2 = (x + 4)^2
My answer is x = -9/2 and I am not sure it is correct. I squared both sides and then used x-5 on each side of the equation and -x-4.
left side was 2x = -9 then I divided 2 into each side leaving x = -9/2. Is this the correct way to complete this equation? and is this the correct answer/
Click here to see answer by checkley75(3666) |
Question 70974: Problem#20
Find the distance between each pair of points.
(-3,0) and (4,0)
Problem#48
Use the pythagoran theorem to determine the length of each line segment. Where appropriate, round to the nearest hundredth.
in the diagram the points it has are (1,-1) and (3,2)
Click here to see answer by checkley75(3666) |
Question 71129: Given a line containing the points (1,3), (2,4), (3,5) determine the slope-intercept form of the equation, give one additional point on this line and graph the function.
Equation of line in slope-intercept form f(x) =
Show your work here:
Give one additional point in (x,y) form that would fall on this line: (4,6)
Graph the function:
Click here to see answer by checkley75(3666) |
Question 71221: I have been trying to figure this out for two days and I am stuck. I have been through my text book and web site but I just don;t get it, can you help?
the question is not from a text book
thnks
Suppose a baseball is shot up from the ground straight up with an initial velocity of 64 feet per second. A function can be created by expressing distance above the ground, s, as a function of time, t. This function is s = -16t2 + v0t + s0
· 16 represents 1/2g, the gravitational pull due to gravity (measured in feet per second2).
· v0 is the initial velocity (how hard do you throw the object, measured in feet per second).
· s0 is the initial distance above ground (in feet). If you are standing on the ground, then s0 = 0.
a) What is the function that describes this problem?
Answer:
b) The ball will be how high above the ground after 1 second?
Answer:
Show work in this space.
c) How long will it take to hit the ground?
Answer:
Show work in this space.
d) What is the maximum height of the ball? What time will the maximum height be attained?
Answer:
Show work in this space.
Click here to see answer by stanbon(75887) |
Question 71236: 4) John has 300 feet of lumber to frame a rectangular patio (the perimeter of a rectangle is 2 times length plus 2 times width). He wants to maximize the area of his patio (area of a rectangle is length times width). What should the dimensions of the patio be, and show how the maximum area of the patio is calculated from the algebraic equation.
Show clearly the algebraic steps which prove your dimensions are the maximum area which can be obtained. Use the vertex formula to find the maximum area.
Answer:
Show work in this space.
Click here to see answer by stanbon(75887) |
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