Tutors Answer Your Questions about Miscellaneous Word Problems (FREE)
Question 126344: I don't really know where to place this problem, because it comes in the guide of a contest exam, so I don't know what theme are they talking about, but the problem is like this:
If (x+y)^2=17 and xy=3, then x^2+y^2=
a.20
b.17
c.14
d.11
Can you tell me which theme are they talking about and how to solve it... Thank you...
Click here to see answer by jim_thompson5910(28476)  |
Question 126358: A ball is thrown downward from a window in a tall building. Its position at time "t" in seconds is s = 16t^ + 32t, where "s" is in feet. How long (to the nearest tenth) will it take the ball to fall 137 feet?
in equation "16t^" means 16 t squared.
iF anyone could help that would be great!
thanks.
Click here to see answer by stanbon(57222) |
Question 126502: Mirana is making a bow for a wreath. The bow is made from six yards of ribbon which must be cut into three pieces where two pieces are the same legnth and the third piece is eight times as long. Find the legnth of each piece
Click here to see answer by solver91311(16868)  |
Question 126502: Mirana is making a bow for a wreath. The bow is made from six yards of ribbon which must be cut into three pieces where two pieces are the same legnth and the third piece is eight times as long. Find the legnth of each piece
Click here to see answer by MathLover1(6614)  |
Question 126438: Flotsam and Jetsam littered the beach. the pieces of Flotsam numbered 160 more than the pieces of Jetsam, and 6 times the number of pieces of Jetsam outnumbered the number of pieces of Flotsam by 40. How many pieces of each were there?
Click here to see answer by scott8148(6628)  |
Question 126498: I have so much trouble with word problems, please help me.
Soybean meal is 16% protein. Cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320-lb mixture that is 15% protein? Thank you far any help you can give.
Click here to see answer by scott8148(6628) |
Question 126540: The sum of both digits, of either of two two-digit numbers, in whatever order the digits are written, is 9. The square of either of the digits of either number, minus the product of both digits, plus the square of the other digit is the number 21. The numbers are _______?
Click here to see answer by scott8148(6628) |
Question 126636: I have been struggling on this problem for a while now and I was wondering if anyone could help me? I would deeply appreciate it!! Please and Thank you!!
Solving Problems Involving Inequalities
Solve.
A collection of quarter and dimes is worth more than $20. There are twice as many quarters as dimes. At least how many dimes are there?
Click here to see answer by ankor@dixie-net.com(15624)  |
Question 126666: The following lists the steps a student uses to solve a system of eqatuions. but an error has been made. Fing and describe the error and correct the answer.
3x-y=14
2x+y=16
_________________
5x=20
x=4
3x-y=4
3(4)-4
y=4-12
y=-8
The solution is (4,-8)
Click here to see answer by edjones(7569)  |
Question 126681: You are under water and you count 40 legs of animals. You come above water and there are ducks and turtles, but a total of 13 of them. How many ducks are there and how many turtles are there? ---I figured out that there are 6 ducks and 7 turtles becuase 6(2 legs)=12 and 7(4 legs)=28 and 12+28=40, but I need to know how to write that in an algebraic equation to get those answers instead of just doing basic multiplication.
Click here to see answer by bucky(2189) |
Question 126740: The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully. Hint: Assume independent events. Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt “just on this trip”?
Click here to see answer by stanbon(57222) |
Question 126765: This one has me totally stumped. I've tried working it a couple of times with a side by side example and can't understand it.
Hat sizes are determined by measuring the circumference of one's head in either inches or centimeters. Use ratio and proportion to complete the following table.
Hat Size Head Circumference Head Circumference
to the nearest 1/5 in. to the nearest centimeter
7 5/8 24 61
7 1/2 23 3/5 60
Click here to see answer by checkley71(8403) |
Question 126772: Melanie can paint a certain barn by herself in xday. her helper Malissa can paint the same barn by herself in 2x days. Write a rational expression for the fraction of the barn that they complete in one day by working together. Evaluate the expression for x=5.
Click here to see answer by stanbon(57222) |
Question 127019: if the length of a side of a square is increased by 3 centimeters, the perimeter of the new square is 40 centimeters more than twice the length of a side of the original square. find the dimensions of the original square
Click here to see answer by checkley71(8403) |
Question 126994: I have been struggling with this problem for a while now and I was wondering if anyone could help me? I would deeply appreciate it!! Please and Thank You!!
Absolute Values in Open Sentences
Solve.
the absolute value of t-4 is greater than t-4
Click here to see answer by scott8148(6628) |
Question 127060: The period of vibration P for a pendulum varies directly as the square root of the length L. If the period of vibration is 3 seconds when the length is 36 inches, what is the period when L=5.0625 inches?
Click here to see answer by bucky(2189) |
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