If the line segment AB is on a number line, and point A is at 4 and Point B is at 19, then the length of AB is . Select one: a. 15 b. - 15 c. 23 d. 12

15

Step-by-step explanation:

If two points are together, then you subtract the numbers to get the distance

19 - 4 = 15

555.99.

step-by-step explanation:

hope this

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus