The half-life of a substance is 6 years. There is currently 150 mg of the substance. How ong until only 5 mg remains?

i got 86 for this

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15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

27

step-by-step explanation:

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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