Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 205878: Hello, I am trying to solve quadratic word problem...
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?
Thanks
Click here to see answer by scott8148(6628)   |
Question 206005: Please help me with this problem, thank you.
The body mass index, I, can be used to determine an individual's risk for heart disease. An index less then 25 indicates a low risk. The body mass index is given by the formula, or model, I=700w/H2 , where w= weight, in pounds, and H=height, in inches. Tom is 71 inches tall. What weights will keep his body mass index between 19 and 33? Tom's body mass index will fall between 19 and 33 for the set of all weights such that ____< W < _______ (round to nearest tenth as needed)
Click here to see answer by jim_thompson5910(28715) |
Question 206012: Please help me with this problem. I really appreciate it.
Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 83.25
Find the measure of the smaller angle?
What is the measure of the other angle?
Click here to see answer by checkley77(12569) |
Question 206030: I'm having problems doing this can you help me.
Volleyball teams receive 2 points when they win and 1 point when they tie. One season a volleyball team won a championship with 57 points. the team won 12 more games than they tied. How many wins did the team have? How many ties did the team have?
Click here to see answer by Alan3354(31518)  |
Question 206022: Hi, Im having problems trying to solve this problem. Can you help.
Hockey teams receive 2 points when they win and 1 point when they tie. One season, a team won a championship with 57 points. they won 12 more games than they tied. How many wins did the team have? How many ties did the team have?
Click here to see answer by ankor@dixie-net.com(15746)  |
Question 206107: I really need some help for this problems because I have been confuse of this problems since the start and now the Examination is coming near and this is going to be added, I really will appreciate some help in this questions:
---find the value of k so that the equation  will have equal roots.
---find the value of k so that the equation  will have one roots numerically equal but opposite in sign
--what should be the range of the value of k so that the equation  will have real and unequal roots.
---what should be the value of k so that the equation 
will have equal roots?
Click here to see answer by Edwin McCravy(8999)  |
Question 206101: I really need some help for this problems because I have been confuse of this problems since the start and now the Examination is coming near and this is going to be added, I really will appreciate some help in this questions:
---find the value of k so that the equation will have equal roots.
---find the value of k so that the equation will have one roots numerically equal but opposite in sign
--what should be the range of the value of k so that the equation will have real and unequal roots.
---what should be the value of k so that the equation
will have equal roots?
Click here to see answer by Edwin McCravy(8999) |
Question 206153: I need to determine a quadratic equation and solve the problem.
My word problems is as follows: The perimeter of a rectangle is 34cm, and the diagonal is 13cm. Determine the lengths of the sides of the rectangle.
I am setting up my problem as follows but not sure if it is correct:
2x + 2y = 34 (perimeter of the rectangle)
x^2 x y^2 = 13^2 or 169 (the diagonal portion of the rectangle)
I am then following through to make a quadratic equation where:
2x + 2x = 37 reduces to x = 17-7
Then I am taking (17-y)^2 + y^2 = 169 to come up with my final quadratic equation.
Am I on the right path?
Thanks - Lori
Click here to see answer by jim_thompson5910(28715) |
Question 206210: Can you please help me with this problem:
Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40 miles per hour and Train B is traveling at 48 miles per hour. Train A passes a station at 11:15PM.. If train B passes the same station at 11:30pm, at what time will train B catch up to train A? (write am, or pm in the answer)
Click here to see answer by ankor@dixie-net.com(15746) |
Question 206213: This problem with linear functions is getting me confused, can you help me please? I appreciate it.
In 1991, the life expectancy of males in a certain country was 66.3 years. In 1995, it was 68.9 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991.
The linear function E(t) that fits the data is E(t)=___t + ____ (round to the nearest tenth)
Use the function to predict the life expectancy of males in 2008. E(17)=___
(round to the nearest tenth)
Click here to see answer by stanbon(57967) |
Question 206212: Please help, I am having problems with this one, thanks
Media services charges $40 for a phone and $20/month for its economy plan. The equation C= 20t + 40 describes the total cost, C, of operating a media service phone for t months. the total cost for 4 months of service is $____.
If a customer has only $90 available, how many months of service can she receive? Would it be 3, 2 1/3, 2 1/2 or 2?
Click here to see answer by Theo(3504)  |
Question 206212: Please help, I am having problems with this one, thanks
Media services charges $40 for a phone and $20/month for its economy plan. The equation C= 20t + 40 describes the total cost, C, of operating a media service phone for t months. the total cost for 4 months of service is $____.
If a customer has only $90 available, how many months of service can she receive? Would it be 3, 2 1/3, 2 1/2 or 2?
Click here to see answer by nerdybill(7003)  |
Question 206251: Wondering if I am on the right track. I need to determine a quadratic equation to solve the problem and also solve the problem. My word question is as follows: The perimeter of a rectangle is 34 cm and the diagonal is 13 cm. Determine the lengths of the side of the rectangle.
I am setting up my equation as follows:
2x + 2y = 34
x^2 + y^2 = 169
I then determine (x) by the following equation:
2x + 2y = 34
2x = 34 - 2y
x = 17 - y
Then I am taking the following equation to come up with a quadratic equation:
(17-y)^2 + y^2 = 169
189 - 34y + y^2 + y^2 = 169
2y^2 - 34y = -20
2y^2 - 34y + 20 = 0
Then my final answer (?) after calculating the quadratic equation is:
x = 34 + or - 498 / 4
x = 133 and x = 116
My question is, am I doing this correctly or am I missing a step?
Your input would be greatly appreciated.
Lori
Click here to see answer by Targetweek(62) |
Question 206251: Wondering if I am on the right track. I need to determine a quadratic equation to solve the problem and also solve the problem. My word question is as follows: The perimeter of a rectangle is 34 cm and the diagonal is 13 cm. Determine the lengths of the side of the rectangle.
I am setting up my equation as follows:
2x + 2y = 34
x^2 + y^2 = 169
I then determine (x) by the following equation:
2x + 2y = 34
2x = 34 - 2y
x = 17 - y
Then I am taking the following equation to come up with a quadratic equation:
(17-y)^2 + y^2 = 169
189 - 34y + y^2 + y^2 = 169
2y^2 - 34y = -20
2y^2 - 34y + 20 = 0
Then my final answer (?) after calculating the quadratic equation is:
x = 34 + or - 498 / 4
x = 133 and x = 116
My question is, am I doing this correctly or am I missing a step?
Your input would be greatly appreciated.
Lori
Click here to see answer by mickclns(59) |
Question 206280: Can you help me with this problem,
The function H(x)= 2.75x +71.48 can be used to predict the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long.
Predict the height of a woman whose humerus is 36cm long. the predicted height of a woman whose humerus is 36cm long is _____cm
Click here to see answer by Theo(3504) |
Question 206280: Can you help me with this problem,
The function H(x)= 2.75x +71.48 can be used to predict the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long.
Predict the height of a woman whose humerus is 36cm long. the predicted height of a woman whose humerus is 36cm long is _____cm
Click here to see answer by Targetweek(62) |
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