Solving Exponential Equations (lacking a common base)
4^x-5=8
2 answers:
Answer:
x= 6 1/2 or 6.5
Step-by-step explanation:
4^x-5 =8
2^2(x-5) =2^3
since the base is equal, the powers are equal
2(x-5) = 3
2x - 10 = 3
2x = 3 + 10
2x = 13
2x/2 = 13/2
x = 6 1/2 or 6.5
Answer:
6.5
Step-by-step explanation:
4^(x-5) = 8
2^[2(x-5)] = 2³
Equating powers:
2(x-5) = 3
x-5 = 3/2
x = 13/2 or 6½
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Answer:
17
Step-by-step explanation:
3x - y = 9
y = -2x + 11
3x - (-2x + 11) = 9
3x + 2x - 11 = 9
3x + 2x = 9 + 11
5x = 20
x = 20/5
x = 4
y = -2x + 11
y = -2(4) + 11
y = -8 + 11
y = 3
solution (where the lines intersect) is (4,3)
Could you please send a picture of the polygon?
It’s C! that’s the answer, hope it helps
