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A function assigns the values. The half life of the substance is 6.25 days.
<h3>What is a Function?</h3>A function assigns the value of each element of one set to the other specific element of another set.
Given the function for the substance as , therefore, the half life of the substance can be written as,
Since we need to find the half life, therefore, the ratio of the initial mass and the mass after half-life will be 1/2.
Given the value of k is 0.1109, therefore,
Hence, the half life of the substance is 6.25 days.
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Answer:
Step-by-step explanation:
Given that,
x° + 35° = 90° (complementary angles)
Subtract 35 to both sides
x = 90 - 35
x = 55°
Answer:
D
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos CBA = =
=
, thus
∠ CBA = (
) ≈ 70.53° ( to 2 dec. places )