Answer:
12
Step-by-step explanation:
If <em>a</em> = 6 and <em>b</em> = -6
<em>a</em> + <em>b</em> = 0
(6) + (-6) = 0
6 – 6 = 0
<em>ab</em> = -36
(6)(-6) = -36
6 • -6 = -36
<em>a</em> – <em>b</em> = 12
(6) – (-6) = 12
6 + 6 = 12
I hope this helps
Answer:
i agree with Isabelle
Step-by-step explanation:
above
Answer:
Option A
f(x) = 12.5(1.6)^x
Step-by-step explanation:
The number of gnats the scientists have gathered
At 0 hours, they gathered 12 gnats.
Checking all the options, applying x = 0 makes the index part become 1 (Anything raised to the power zero is 1).
So, we have the following functions
f(x) = 12.5
f(x) = 12.6
f(x) = 6.2
f(x) = 1.6
This has reduced our work, as we can screen out options C and D, they are too far from 12. This leaves us with option A and B.
At 1 hour, they gathered 20 gnats.
Checking options A and B
A. f(x) = 12.5(1.6)
= 20
B. f(x) = 12.6(6.2)
By inspection, 12 × 6 is already 72,
12.6 × 6.2 will be more.
By these, we can conclude that f(x) = 12.5(1.6)^x has the best models the number of gnats the scientists have gathered after the number of hours listed in the given table.
1st slope is -1/3. 2nd slope is 6
slope is same in parallel lines so not parallel
slopes are negative reciprocals in perpendicular lines so they aren't perpendicular
they are called oblique
