# All Questions +0169817 Questions

0
387
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+142
off-topic
killersteve27  Feb 11, 2018
-1
746
2

### In every numeration system (base b) there is a three-digit integer that is (b+1) times the sum of its digits. In base ten the number is 198.

Guest Feb 11, 2018
0
620
1

### how many planes of symmetry does a rectangular solid 9cm by 9cm by 12cm have

Guest Feb 11, 2018
-1
252
1

### How I can solve/simplify x/xsqrt(2)?

Guest Feb 11, 2018
-1
952
1
+110
Hans007  Feb 11, 2018
0
1274
10
+110

### find how many digits in the base 10 number 9^(9^9) has when written in base nine

Hans007  Feb 11, 2018
Feb 10, 2018
0
436
2
+845

### https://snag.gy/El1yav.jpg

YEEEEEET  Feb 10, 2018
0
2373
1
+845

### The equation of line L1 is y= 3x - 2

YEEEEEET  Feb 10, 2018
0
424
0
+77
neurolover25  Feb 10, 2018
0
788
4
+77
neurolover25  Feb 10, 2018
0
892
2
+77
neurolover25  Feb 10, 2018
-1
269
1
Guest Feb 10, 2018
+2
373
1
+557
lynx7  Feb 10, 2018
-1
416
1

### Given $\delta(x) = 3x + 8$ and $\phi(x) = 8x + 7$, what is $x$ if $\delta(\phi(x)) = 7$?

Guest Feb 10, 2018
0
839
3
+317
KennedyPape  Feb 10, 2018
0
998
1
+113
jonathanxu999  Feb 10, 2018
0
760
2
+110

### The number 15 factorial ends in p zeros when converted to base 12. Find p

Hans007  Feb 10, 2018
0
1
2116
2
+110
Hans007  Feb 10, 2018