Answer:
The first statement is true.
Step-by-step explanation:
The function is f(x) = - (x + 6)(x + 2)
⇒ f(x) = - x² - 8x - 12
Now, condition for a function f(x) to be increasing at x = a is f'(a) > 0.
Now, f(x) = - x² - 8x - 12
⇒ f'(x) = -2x - 8 {Differentiating with respect to x}
Now, f'(a) = -2a - 8 {Here a can be any real value}
And, the condition for increasing function at x = a is
- 2a - 8 > 0
⇒ - 2a > 8
⇒ a < - 4
Therefore, the first statement is true i.e. the function is increasing for all real values of x where x < – 4. (Answer)
Answer:
14
Step-by-step explanation:
4+10=14
0.8 - 0.05 = 0.75
0.75 is the answer.
or 3/4ths
Answer
Trapezoids
Step-by-step explanation:
Squares are not trapazoids.
If it is
y is diretly proportional to x
y=kx
solve for y
3x+5y=0
5y=-3x
y=-3/5x
y=kx
constant of variation is -3/5
