Which of the following equations are true? (choose 2)
Responses
A
1.1 × 108 = 2.2 × 103
5.0 × 105
1.1 × 10 8 = 2.2 × 10 3 5.0 × 10 5
B (3 × 104) - (2 × 104) = 10,000(3 × 10 4 ) - (2 × 10 4 ) = 10,000
C
12.01 × 10-5 = 1.375
8.75 × 10-6
12.01 × 10 -5 = 1.375 8.75 × 10 -6
D (1.8 × 109) + (3.4 × 109) = 5.2 × 109(1.8 × 10 9 ) + (3.4 × 10 9 ) = 5.2 × 10 9
E (6.12 × 10-3) × (4.25 × 10-2) = 1.37 × 10-5
A
(1.1 × 10^8) = 2.2 × 10^3 is true because 1.1 × 10^8 = 110,000,000 and 2.2 × 10^3 = 2,200 which are equal.
D
(1.8 × 10^9) + (3.4 × 10^9) = 5.2 × 10^9 is true because 1.8 × 10^9 + 3.4 × 10^9 = 5.2 × 10^9 which are equal.