There are about 139 trees in each row.
418/3=
139.333333333~ 139
Answer:
a - 162
b - 234
Step-by-step explanation:
mental mathed it
Answer:
D
Step-by-step explanation:
first of all we need to solve the inequalities
(-∞,1] or ]-∞,1]
the second inequality is
[2,∞) or [2,∞[
so the answer is D
The amount of the radioactive substance is 374.6 g
<h3>How to determine the amount of
radioactive substance?</h3>
The given parameters are:
- Initial, a = 424 mg
- Rate, r = 6%
- Time, t = 2 hours
The amount of the radioactive substance is calculated as:
A(t) = a(1 - r)^t
This gives
A(t) = 424 * (1 - 6%)^t
At 2 hours, we have:
A(2) = 424 * (1 - 6%)^2
Evaluate
A(2) = 374.6
Hence, the amount of the radioactive substance is 374.6 g
Read more about exponential functions at:
brainly.com/question/2456547
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60x - 12 = 14x^2 + 14x
Subtract 60x & Combine
-12 = 14x^2+14x-60x
-12= 14x^2-46x
Add 12
0= 14x^2-46x-14
