Question

Please help just this that's all​

Answer 1

given:

`5 * {10}^(3) + ....... = 7.5 * {10}^(4)`

to find:

the true equation

solution:

let the unknown be y

`y = (7.5 * {10}^(4) ) - (5 * {10}^(3) )`

`y = (7.5 * 10000) - (5 * 1000)`

`y = 75000 - 5000`

`y = 70000`

`y = 7 * {10}^(4)`

therefore, the correct answer is option D

Answer 2

7 × 10⁴ (option D.)

Explanation:

Take the missing value as 'x'.

5 × 10³ + x = 7.5 × 10⁴

x = (7.5 × 10⁴) - (5 × 10³)

x = (7.5 × 10000) - (5 × 1000)

x = 75000 - 5000

x = 70000

x = 7 × 10⁴ (option D.)

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Hope it helps ⚜