15x - 6x +x2 combining like terms please simplify the expression
2 answers:
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Answer:
x = -11
Step-by-step explanation:
Convert fraction into negative exponential form:
Simplify using exponent power rule:
Convert both sides of the equation into terms with same base:
Simplify using exponent power rule:
Based on the given conditions, corresponding exponents are equal:
Rearrange unknown terms to the left side of the equation:
Combine like terms:
Calculate the sum or difference:
Thurs, x = -11
[RevyBreeze]
Answer:
5.1 days
Step-by-step explanation:
Given in the question,
initial amount of substance = 34 grams
k-value = 0.137
To find the half life of this substance we will use following formula
here N(0) is initial amount of substance
t is time in days
Plug values in the formula
1/2 = e^{-0.137t}
Take logarithm on both sides
ln(1/2) = ln( e^{-0.137t})
ln(1/2) = -0.137t
t = ln(1/2) / -0.137
t = 5.059
t ≈ 5.1 days (nearest to tenths)