Search found 4 matches
equation with two variables
What is the largest possible value of y if (x − 3)^2 + (y + 6)^2 = 100? a= −2 b= 4 c= 5 d= 8 e= 12 I recognised that for for y to be maximized, the value of (x - 3)^2 must be minimized. Since (x - 3)^2 must be positive, the smallest value it can be is 0. But then I get stuck at this point y^2 + ...
- by amanjena
Wed Nov 12, 2014 6:58 am- Forum: Problem Solving
- Topic: equation with two variables
- Replies: 4
- Views: 3930
Word problem
A certain musical scale has 13 notes, each having a different frequency, measured in cycles per second. In the scale, the notes are ordered by increasing frequency, and the highest frequency is twice the lowest. For each of the 12 lower frequencies, the ratio of a frequency to the next higher freque...
- by amanjena
Wed Apr 23, 2014 8:33 am- Forum: Problem Solving
- Topic: Word problem
- Replies: 7
- Views: 6701
Quantitative 2
A certain liquid leaks out of a container at the rate of k liters for every x hours. If the liquid costs $6 per liter, what is the cost, in dollars, of the amount of the liquid that will leak out in y hours?
A) ky/6x
B) 6x/ky
C) 6k/xy
D) 6ky/x
E) 6xy/k
I think it is D
- by amanjena
Wed Apr 23, 2014 8:16 am- Forum: Problem Solving
- Topic: Quantitative 2
- Replies: 3
- Views: 2180
Quantitative
A certain business produced x rakes each month from November through February and shipped x/2 rakes at the beginning of each month from March through October. The business paid no storage costs for the rakes from November to February, but it paid storage costs of 0.10$ per rake each month from March...
- by amanjena
Wed Apr 09, 2014 9:16 am- Forum: Problem Solving
- Topic: Quantitative
- Replies: 2
- Views: 2096