Distance between (-1,2) (7,8)

10

Step-by-step explanation: In this problem, we're asked to find the distance between the points (-1,2) and (7,8) so we use the distance formula which states that the distance between two points is equal to

.

Our first point, (-1,2) represents (, ) and our second point,

(7,8) represents (, ).

So, plugging the given information into the formula, we have.

Next, we simplify inside the parentheses to get.

Next, 8² is 64 and 6² is 36 so we have or which is 10.

So the distance between the points (-1,2) and (7,8) is 10.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5