Math Test 2 Class 9

If log _a 16=4 , a=

• 2

• 3

• 4

• 16

The common logarithm has the base is

• e

• 10

• 100

• 1

log _a mn =

• log_a mn

• log_a m - log_a n

• log_a m + log_a n

• m+ n

log ₁₀ 1000 = y , y =

• 1

• 2

• 3

• 10

   $\log_{7_{ }}x\ =2\ \ there\ fore\ \ x=$  

• 2

• 7

• 14

• 49

The logarithem of 1 to any base is

• 0

• 1

• 10

• none of these

The characteristic of log 0.3451 is

• 1

• -1

• 2

• -2

In scientific notation 0.000234 is written as

• 0.0234 x 10^-2

• 0.234 x 10^-4

• 234 x10

• 2.34 x 10^-4

 $\sqrt{5}$   $\times\sqrt{5\ }\ \$  

• 5

• 10

• 25

• 15

( -6,4 ) is in quadrant

• 1st

• 2nd

• 3rd

• 4th