if 2^n-7*5^n-4=1250,find the value of n
Answers
Answered by
1
Answer:
Explanation:
With exponential equations, one approach is to make the bases on both sides the same.
2
n
−
7
×
5
n
−
4
=
1250
2
n
−
7
×
5
n
−
4
=
2
×
5
4
Now we can compare the indices of like bases.
n
−
7
=
1
→
n
=
8
n
−
4
=
4
→
n
=
8
Do not be tempted to multiply the
2
and
5
!
The indices are different so you may not.
Step-by-step explanation:
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Answered by
0
Answer:
2^n-7*5^n-4=1250
2^n-7*5^n-4=2×5^4
now we are comparing on the power.
n-7=1 n-4=4
n=8. n=8
thair for
value of n is 8
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