The half life of the substance is 6.92 days.
<h3>What is the Half life ?</h3>
Half life can be defined as the time required to reduce the concentration to half of its initial value.
Here the equation given is
The concentration will reduce to half therefore
so,
ln 0.5 = - 0.1001 * t(1/2)
-0.693 = -.1001 * t(1/2)
t(1/2) = 6.92 days.
Therefore the half life of the substance is 6.92 days.
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Answer:
<u>multiply</u> the base and <u>add </u>the exponents
The answer would be three. The reasons are clear. You can't form a closed figure when you just have two sides. All they would do is just intersect each other. Also, one side must intersect with two other noncollinear sides. This means that a polygon has to have at least three sides.
Answer:
- 439
Step-by-step explanation:
- s ( x ) = 2 - x²
- t ( x ) = 3x
- s ( t ( -7 ) ) = ?
--------------------------
- t (-7) = 3 * ( -7 ) = -21
- s ( t ( -7 ) ) = s ( -21 ) = 2 - ( -21 )² = 2 - 441 = - 439
- s ( t ( -7 ) ) = -439
Given:
hourly rate = 11.50
hours worked in a week = 40 hours
taxes per moth = 60
Every month may be 4 weeks or 5 weeks but we know that 1 year has 52.1429 weeks.
Let us compute for the whole year:
Earnings:
11.50 /1 hour * 40 hours/1week * 52.1429 weeks/1year
= 11.50 * 40 * 52.1429/year
= 23,985.734 per year
Taxes:
60 / per month * 12 months / 1 year
= 60 * 12/year
= 720 per year
Net earning per year
23,985.734 - 720 = 23,264.734
Net earning per month
23,264.734 ÷ 12 months = 1,938.81
You will earn 23,264.73 annually from a monthly earning of 1,938.81
