• Aug 29th 2009, 05:15 PM
Minieke
log3 3 log4 5 = _______
1)log4 5
2)log3 3
3)log3 4
4)1/log4 5

log10 10 = _______
1)1
2)2
3)10
4)0

The value of (-3/4)^3 * (-3/4)^7 is _______
1)(-3/4)^10
2)(-3/4)^20
3)(-4/3)^10
4)(-3/4)^30

The value of (-5/6)^4 ÷ (-5/6)^3 = _______
1)-5/6
2)-5/4
3)-3/4
4)-4/2
on the first 2 problems, the spaces between numbers means that like... log4 5 is log small low 4 big 5
which i think the 4 would be the base? idk..

Just need help with these, they are on some pre-test problems and i have no idea how to do them.
• Aug 29th 2009, 05:24 PM
skeeter
Quote:

Originally Posted by Minieke
log3 3 log4 5 = _______
1)log4 5
2)log3 3
3)log3 4
4)1/log4 5

log10 10 = _______
1)1
2)2
3)10
4)0

The value of (-3/4)^3 * (-3/4)^7 is _______
1)(-3/4)^10
2)(-3/4)^20
3)(-4/3)^10
4)(-3/4)^30

The value of (-5/6)^4 ÷ (-5/6)^3 = _______
1)-5/6
2)-5/4
3)-3/4
4)-4/2

for the first two, note that $\log_b{b} = 1$

for the third ... note that $a^x \cdot a^y = a^{x+y}$

for the fourth ... $\frac{a^x}{a^y} = a^{x-y}$