8. the distance between (3,5) and (9, -3) is:
a. 100
b. 2137
c. 2135
d. 10

10 (Answer D)

Step-by-step explanation:

Here we see that the x-coordinate changes by 6, from 3 to 9, and that the y coordinate changes by 8, from 5 to -3.

We use the Pythagorean Theorem to calculate the distance between these two points.  One leg of a triangle here has length 6 and the other leg has length 8.  Applying this Theorem, we get:

6^2 + 8^2 = [ distance between (3, 5) and (9, -3) ]^2  =  d^2, and so:

d^2 = 36 + 64 = 100.

This distance must be positive.  Thus we take the positive square root of 100, which is 10.  10 is the distance between these two points.

gdp is the best phrase!

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.