Math, asked by gayathrid472, 8 months ago

simplify:
1)
(2.75 × 10) + (1.23 × 10)
2)
(1.598 × 10) - (4.58 × 10)
3)
(1.20 × 10) × (1.20 × 10)
4)
(8.41 × 10) ÷ (4.3 × 10)

Answers

Answered by Anonymous
3

Step-by-step explanation:

(2.75 x 107) + (1.23 x 108)

Solution :

= (2.75 x 107) + (1.23 x 108)

= (2.75 x 107) + (1.23 x 107 x 101)

= 107(2.75 + 1.23 x 101)

= (2.75 + 12.3) x 107

= 15.05 x 107

= 1.505 x 107 + 1

= 1.505 x 108

2 soln

(1.598 x 1017) – (4.58 x 1015)

Solution :

= (1.598 x 1017) – (4.58 x 1015)

= 1015(1.598 x 102 - 4.58)

= 1015(159.8 - 4.58)

= 155.22 x 1015

= 1.5522 x 1015 + 2

= 1.5522 x 1017

3 soln

(1.02 x 1010) x (1.20 x 10–3)

Solution :

= (1.02 x 1010) x (1.20 x 10–3)

= 1.02 x 1.20 x 1010-3

= 1.224 x 107

4 soln

(8.41 x 104) ÷ (4.3 x 105)

Solution :

= (8.41 x 104) ÷ (4.3 x 105)

= (8.41/4.3) x 104-5

= 1.955 x 10-1

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