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Math 9 Chapter 3 Logarithms-7
1.
log 42 = log84 - log2
a) False
b) True
2.
log 80 = 1+Log8
a) False
b) True
3.
log (.0001) = -3
a) True
b) False
4.
log 196 = 2Log2 + 2Log7
a) True
b) False
5.
The Scientific Notation of 0.000056 is
a) 56 x 10
-4
b) 5.6 x 10
-6
c) 5.6x10
4
d) 5.6x10
-5
6.
The standard form of 0.334x10
-6
is
a) 0.000000334
b) 33400000
c) 0.00034
d) 3.34x10
-7
7.
The radius of earth is 32,00000m, it�s scientific notation is
a) 0.0000032m
b) 3.2x10
-6
m
c) 3.2x10
6
m
d) 32x10
6
m
8.
If x=log
3
243 then �x� will be
a) 5
b) 3
c) 243
d) 7
e) 4
9.
The logarithmic form of ( 1/2 )
-3
= 8 is
a) Log
2/2
8 = -3
b) Log
8
1/2 = -3
c) Log
-3
8 = 1/2
d) Log
1/2
(-3) =8
10.
If log
36
6 = 3x then �x� will be
a) 1/2
b) 1
c) 6
d) 1/3
e) 1/6
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