Answer:
Please check the explanation.
Step-by-step explanation:
Given
f(x) = 3x + x³
Taking differentiate



solving






now solving




Thus, the expression becomes


Thus,
f'(x) = 3 + 3x²
Given that f'(x) = 15
substituting the value f'(x) = 15 in f'(x) = 3 + 3x²
f'(x) = 3 + 3x²
15 = 3 + 3x²
switch sides
3 + 3x² = 15
3x² = 15-3
3x² = 12
Divide both sides by 3
x² = 4



Thus, the value of x will be:

Answer:
C
Step-by-step explanation:
Density curves is a graph that shows probability. The area under the density curve that is equal to 100% of all probability. Moreover, density curve can be skewed distribution. Density curve is bell shaped, therefore, adequately does not reveal outliers.
There are actually 5040 ways of arranging the letter knitting.
Answer:
do it your self.
Step-by-step explanation:
Answer:
2.5 cm is the radius
Step-by-step explanation: