Are you talking about meters? If so, then:
31.7 - 18 = 13.7 m.
Read as: x is to 1/4 as 32 is to 3/4
x / (1/4) = 32/(3/4)
4x = 128/3
x = (32)/3
Length = √area = √81 = 9
diagonal = √2 * side = √2*9 = 9√2
It should be d. , Because if you take the equation 3x+y=9, and make it slope intercept form, it would be y= -3x+9. -3 is the slope, and 9 is the y intercept. D is the answer.
Answer:
- Point of Inflection: Does not Exist
- f(x) is concave up when x∈(-∞,-6)
- f(x) is concave down when x∈(-6, ∞)
Step-by-Step Explanation
We are to determine the intervals on which the function is concave up or down and find the points of inflection.
A function f(x) is concave up in the intervals for which the second derivative of the function .
A function f(x) is concave down in the intervals for which the second derivative of the function .
Given
We need to solve for the second derivative of the function.
The first derivative:
Using Quotient Rule:
.
.
The Second derivative:
Similarly applying quotient rule:
Now is 490, thus does not have a solution,
However, we determine the point where is undefined. This point is x=-6.
In the Interval, (-∞,-6), f(x) is concave Up and in the Interval (-6, ∞), f(x) is concave down. It has no Inflection point.