Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 136458: Once again, I am in need of your help. I am stuck on a quadratic equation that I have to graph... and out of 16 problems on this worksheet, this is the only one I have not been able to solve. This is not from my book, this is off of a worksheet.
This is what I have so far:
y= x^2 + 2
a=1 b=0 c=2
a=1 > 0 parabola opens upwards
x=0
y=0^2 + 2
y-intercept is (0,2)
y=0 0=x^2 +2
x= -0±√(0^2-4(1)(2)
-------------------------------
2(-1)
x= 0±√(0-8)
-----------------
2
X=0 and this is where I am stuck at. I am sorry your page is not allowing me to use the proper quadratic equation form. I did the best that I could.
Would you please help me work through this? Thanks!! ~Lynn
Click here to see answer by vleith(2825)  |
Question 136457: Once again, I am in need of your help. I am stuck on a quadratic equation that I have to graph... and out of 16 problems on this worksheet, this is the only one I have not been able to solve. This is not from my book, this is off of a worksheet.
This is what I have so far:
y= x^2 + 2
a=1 b=0 c=2
a=1 > 0 parabola opens upwards
x=0
y=0^2 + 2
y-intercept is (0,2)
y=0 0=x^2 +2
x= -0±√(0^2-4(1)(2)
-------------------------------
2(-1)
x= 0±√(0-8)
-----------------
2
X=0 and this is where I am stuck at. I am sorry your page is not allowing me to use the proper quadratic equation form. I did the best that I could.
Would you please help me work through this? Thanks!! ~Lynn
Click here to see answer by Earlsdon(6287) |
Question 136503: Here's my question...if the graph of the equation y=f(x), where the vertex of the parabola is 0,0 and P:(2,4), if h(x)=f(x)+3, in (x,y) format what would the new coordinates of P be after the shift? And, if k(x)=-f(x), what would the new coordinates of P be after the reflection? Thanks so much!
Click here to see answer by stanbon(57346) |
Question 136530: I am trying to help my son with a problem. He is doing parabolas. This is the one the teacher did in class and I don't understand what she did. (((y=x^2+8x+6)))....y-6+16 = x^2+8x+16....y+10=(x+4)^2....vertex (-4,-10) Domain is all real numbers, range is y is greater than or equal to -10, minimum is -10. Could you pleas explain her procedure here. Thank you!
Click here to see answer by scott8148(6628)  |
Question 136681: The function W(d)= 0.112d approximates the amount, in centimeters, of water that results from d cm of snow melting. Find the amount of water that results from snow melting from depths of 19cm, 42 cm, and 75 cm.
How do i go about figuring this one out??
Click here to see answer by vleith(2825) |
Question 136855: Given the function k describe by k(x) = x + 16 Find each of the following:
k(0)=
k(-15)=
k(-20)=
Help there are 3 more questions, but I am hoping to do them myself after someone explains to me how it is done please.
Click here to see answer by vleith(2825) |
Question 136860: 5) Find the equations for the horizontal and vertical asymptotes of the following. Type none if the function does not have an asymptote.
a)f(x)=2x+1/x-4
Answer:
Horizontal:
Vertical:
b) g(x)=3X/X^2+4
Answer:
Horizontal:
Vertical:
Click here to see answer by solver91311(16885)  |
Question 136849: Please help me,
The Italian scientist Galileo dropped two balls of different mass from the Leaning Tower of Pisa and found they reached the ground at the same time. If the balls were dropped from a height to 60 feet, how many seconds did it take the balls to hit the ground?
Please help me understand quadractic eqaution word problems and how to do this.!!
thanks,
desperate algebra student..
Click here to see answer by vleith(2825) |
Question 136875: Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? What circumstances would cause you to use a different method?
Can someone please help me answer this question, so I myself can understand it? I am soooo bad at this I am terrible and I am never going to understand things when i cannot understand the explaination?!! Hope someone can help me soon!!
Click here to see answer by stanbon(57346) |
Question 136868: The function l=-0.02x^2+60x models the income earned (i), in dollars, by selling units of product is:
What are the greatest possible income?
How many unit must be sold in order to have the greatest income?
How many unit must be sold to generte an income of $35,000?
HELP i have no clue how to do this!
Click here to see answer by stanbon(57346) |
Question 136991: 4. The line y=0.15x + 0.79
represents an estimate of the average cost of gasoline for each year. The line
0.11x - y= -0.85
estimates the price of gasoline in January of each year (Bureau of Labor Statistics, 2006).
a) Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your reasoning.
b) Use the equations of the lines to determine if they are parallel. What did you find?
c) Did your answer to part b confirm your expectation in part a?
Can someone please help me with these questions...
Click here to see answer by stanbon(57346) |
Question 137158: I am trying to solve this quadratic growth question. A town experiences quadratic growth of the form (P=7t^2 + Po) where (t) is the time in years from 2010. (Po) is the population , and I have determined that to be 7806. How do I make this into a quadratic equation and then factor it? thank you in advance for your help?
Click here to see answer by stanbon(57346) |
Question 137176: This is homework.
Pay attention to th units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile= 5,280 feet for your conversions. Many people know that the weight of an object varies on different planets, but did you know that the weight of an earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation:w+Cr^-2. where C is a constant, and r is the distance that the object is from the center of the earth.
a. Solve the equation w=Cr^-2 for r.
b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the earth.)
c. Use the value of C you found in the previous question to determine how much the objec would weigh in
i. Death Valley (282 feet below sea level)
ii. The top o Mt McKinley (20,430 feet above sea level)
Thanks,
MT
Click here to see answer by stanbon(57346) |
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