It is reported that the wild tiger population has declined by 97% over the last 20 years.
1 answer:
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Answer:
Since,
Here, the given equation is,
|a| < b
Case 1 : if a ≥ 0,
|a| < b ⇒ a < b
Case 2 : If a < 0,
|a| < b ⇒ -a < b ⇒ a > - b
( Since, when we multiply both sides of inequality by negative number then the sign of inequality is reversed. )
|a| < b ⇒ a < b or a > - b ⇒ -b < a < b
Conversely,
If -b < a < b
⇒ a < b or a > - b
⇒ a < b or -a < b
⇒ |a| < b
Hence, proved..
Answer:
Step-by-step explanation:
1) f(x) = 7 - 8x²
f(3) = 7 - 8*3²
= 7 - 8*9
= 7 - 72
f(3) = -65
2) f(a) = -5(a-2)
f(3) = -5(3 -2) = -5 * 1 = -5
4) f(m) = m(m +4)
f(3) = 3*(3+4) = 3 * 7 = 21
9514 1404 393
Answer:
A. 0 ≤ n ≤ 7
B. the height after 0 days (the initial height in cm)
Step-by-step explanation:
<h3>A.</h3>The plant cannot be expected to continue its exponential growth curve, so a reasonable domain is the domain of the observations already made. The plant reached its height of about 11.26 cm after about 7 days. The reasonable domain for the growth function is ...
0 ≤ n ≤ 7
__
<h3>B.</h3>The y-intercept corresponds to the n=0 value, the height of the plant at the start of the study.
_____
<em>Additional comment</em>
The value of n that gives f(n) = 11.26 can be found using logarithms.
11.26 = 8(1.05^n)
log(11.26/8) = n·log(1.05) . . . . . . divide by 8, take logs
n = log(11.26/8)/log(1.05) ≈ 7.00582
