Tutors Answer Your Questions about Equations (FREE)
Question 244265: The Zeller Jewelry Company sold gold rings for $50 each and silver rings for $35 each. Total sales were $2,400. If customers bought twice as many silver as gold rings, how many of each did the store sell? Find the dollar sales of each.
Click here to see answer by richwmiller(17219)   |
Question 244780: solve assume a linear relationship fits each set of data
a long distance telephone comany advertised the following rates:
5 minutes (m) for just 0.85c (p) and 10 minutes for just $1.10 use the ordered pairs (m,p)
1.find the linear equation for these data points
2.use this linear equation to find the cost of a 20-minute phone call.
Click here to see answer by stanbon(75887) |
Question 244834: A person has quarters, dimes, nickels,and pennies with a total value of $3.86. The number of nickels is twice the number of quarters. The number of quarters is two less than the number of dimes. There are 40 coins in all. Write and solve an equation to find the number of each coin. I have figured out that there are eight quarters, sixteen nickels, ten dimes, and six pennies. I can not figure out how to write an equation for this problem. Can you help me?
Click here to see answer by jim_thompson5910(35256) |
Question 244834: A person has quarters, dimes, nickels,and pennies with a total value of $3.86. The number of nickels is twice the number of quarters. The number of quarters is two less than the number of dimes. There are 40 coins in all. Write and solve an equation to find the number of each coin. I have figured out that there are eight quarters, sixteen nickels, ten dimes, and six pennies. I can not figure out how to write an equation for this problem. Can you help me?
Click here to see answer by richwmiller(17219) |
Question 245058: suppose that the width of a rectangle is three feet shorter than lenght and that the perimeter of the rectangle is 84 feet.
a.)set up an equation for the perimeter involving only L, the leght of the rectangle.
b.)solce the equation algebraically to find the lenght of the rectangle.find the width as well.
Click here to see answer by checkley77(12844) |
Question 245283: Two planes started at the same time from two airports that are 3,600 kilometers apart and flew toward each other. One plane flew at 792 kilometers per hour, and the other flew at 888 kilometers per hour. In how many hours were the planes still 240 kilometers apart?
Click here to see answer by fdsalicia(2) |
Question 245860: Translate the problem situation to a system of equations. Do not attempt to solve.
The perimeter of a rectangular building is 234 feet. The width is 25 feet shorter than the length. What are the dimensions? (Let W represent the width and L represent the length.)
Click here to see answer by richwmiller(17219) |
Question 245864: Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.
25x^2 - 10x + 1 = 0
Click here to see answer by solver91311(24713)  |
Question 245864: Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.
25x^2 - 10x + 1 = 0
Click here to see answer by jsmallt9(3758) |
Question 245861: Solve the problem.
An object is thrown downward from a plane which is 540 feet above the ground. The object is thrown with an initial velocity of 27 ft/sec. The distance traveled by the object in t seconds is s = 16t2 + 27t, where s is in feet. How long does it take the object to reach the ground? Show your work.
Click here to see answer by dabanfield(803) |
Question 245918: Hello,
Can someone help me with the following:
1. write a quadratic equation having the given numbers as solutions
5, only solution
2. complete the square. then write the trinomial square in factored form.
x^2-3x
3. solve by applying the quadratic formula
2x^2+7x+3=0
4. use the discriminant to determine whether the following equations have solutions that are two different rational solutions; two different irrational solutions; exactly one rational solution, or two different imaginary solutions.
10-5a^2=7a+9
I have been out of school for 15 years and I am not doing well in this class if you can help me I really would appreciate it. I know that you all are great at helping people like me.
Please help me.
Thank you,
Click here to see answer by Alan3354(69443)  |
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