Question

If 2 n−7 × 5 n−4 = 1250, find the value on n. i want step by step explanation and also tell which lawa of exponent we have to use​

Answer 1

Answer:

Answer

Given 2

n−1

×5

n−4

=1250

⟹

2

3

2

n−4

×5

n−4

=1250

⟹2

n−4

×5

n−4

=1250×2

3

⟹(2×5)

n−4

=(10)

4

⟹(10)

n−4

=(10)

4

when bases are equal then powers are equated.

Therefore, n−4=4⟹n=4+4=8

Answer 2

Answer:

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