Answer:
42xsquared-3x-9
Step-by-step explanation:
Answer:
A is that they both are triangles and they both have right angles
Step-by-step explanation:
i dont know what B is sorry :-(
Y2 - y1 1
--------- this equals - -----
x2 - x1 32
Based on the function shown on the graph, the statement that is true is: <em>D. The candle started at 9 mm and shrinks 5 mm every 4 minutes</em>.
<h3>What is a Function?</h3>
A function is a relationship between input and output values.
On a graph, the average rate of change represents the unit rate, while the point where the line intercepts the y-axis is the initial value or starting value.
Therefore:
The starting value = 9 mm (the candle length when it started burning).
In conclusion, based on the function shown on the graph, the statement that is true is: <em>D. The candle started at 9 mm and shrinks 5 mm every 4 minutes</em>.
Learn more about function on:
brainly.com/question/10439235
Hello,
Use the factoration
a^2 - b^2 = (a - b)(a + b)
Then,
x^2 - 81 = x^2 - 9^2
x^2 - 9^2 = ( x - 9).(x + 9)
Then,
Lim (x^2- 81) /(x+9)
= Lim (x -9)(x+9)/(x+9)
Simplity x + 9
Lim (x -9)
Now replace x = -9
Lim ( -9 -9)
Lim -18 = -18
_______________
The second method without using factorization would be to calculate the limit by the hospital rule.
Lim f(x)/g(x) = lim f(x)'/g(x)'
Where,
f(x)' and g(x)' are the derivates.
Let f(x) = x^2 -81
f(x)' = 2x + 0
f(x)' = 2x
Let g(x) = x +9
g(x)' = 1 + 0
g(x)' = 1
Then the Lim stay:
Lim (x^2 -81)/(x+9) = Lim 2x /1
Now replace x = -9
Lim 2×-9 = Lim -18
= -18
