Union and intersection of intervals

Step-by-step explanation:

Union and intersection of intervals

We are given the following intervals:

We need to find the union and the intersection of the intervals.

Both intervals are represented in the number line as shown in the figure below.

The union of intervals is the set of elements that belong to any of the intervals.

Since both intervals have no common area:

The intersection of intervals is the set of elements that belong to all the intervals.

As pointed above, there is no common area, thus the intersection is empty

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.