# Firewolf

 Benutzername Firewolf Punkte 210 Stats Fragen 16 Antworten 1

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### Compute $1 \cdot \frac {1}{2} + 2 \cdot \frac {1}{4} + 3 \cdot \frac {1}{8} + \dots + n \cdot \frac {1}{2^n} + \dotsb.$

Firewolf  11.04.2019
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40
5
+210

### square roots

Firewolf  29.03.2019
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47
2
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### The same eight people sit in a certain church pew every week, but not always in the same order. Every week, each person hugs the people imme

Firewolf  28.03.2019
+1
55
1
+210

### What is the greatest possible value of $x$ that solves the equation \[ \left( \frac {4x - 16}{3x - 4} \right)^{\!2} + \left( \frac {4x - 16}

Firewolf  27.03.2019
+1
40
1
+210

### The same eight people sit in a certain church pew every week, but not always in the same order. Every week, each person hugs the people imme

Firewolf  27.03.2019
+2
45
1
+210

### Solve: $|2x - 1| = |3x + 5|$. Write your answers as a list of numbers, separated by commas, e.g. '23, 19' (but without the quotes).

Firewolf  21.03.2019
+1
53
5
+210

### Given positive integers $x$ and $y$ such that $x \not = y$ and $\frac {1}{x} + \frac {1}{y} = \frac {1}{12}$, what is the smallest possible

Firewolf  21.03.2019
+1
41
1
+210

### Two trains travel directly toward each other. One of the trains travels at a rate of 12 km/h while the other travels at a rate of 20 km/h. W

Firewolf  21.03.2019
+1
32
1
+210

### The terms of a particular sequence are determined according to the following rules: * If the value of a given term is an odd positive intege

Firewolf  21.03.2019
+1
47
1
+210

### Evaluate: $\dfrac{(x+y)^2 - (x-y)^2}{y}$ for $x=6$, $y \not= 0$.

Firewolf  09.03.2019
+2
65
2
+210

### The sum of the squares of two positive integers is 193. The product of the two integers is 84. What is the sum of the two integers?

Firewolf  26.01.2019
+1
111
1
+210

### In the sequence below, a 1 is followed by two 2's, three 3's, and so on, up to ten 10's. What is the average of the mean, mode, ​

Firewolf  08.12.2018
+1
119
2
+210

### The fifth term of an arithmetic sequence is 9 and the 32nd term is -84. What is the 23rd term?

Firewolf  05.12.2018
+1
272
3
+210

### Rico can walk 3 miles in the same amount of time that Donna can walk 2 miles. Rico walks at a rate 2 miles per hour faster than Donna.

Firewolf  07.11.2018