Click new shooter, then have the new shooter take 5 shots. observe the percentage of hits. now have the same shooter take 10 more shots, for a total of 15. again, observe the percentage of hits. finally, have the same shooter take at least 35 more shots, for a total of 50 or more. observe the percentage of hits. click the "show true probability" checkbox to reveal the true probability of hitting a free throw for this shooter. do you feel that the evidence you have seen here allows you to reject the null hypothesis that the shooter makes 80% of all his free throws? do you think it is better to make this decision after seeing 5, 15, or 50 shots?

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.

step-by-step explanation:

look at the picture.

1.

ef : ab = 2 : 3

gf : cb = 2 : 3

gh : cd = 2 : 3

he : da = 2 : 3

2.

∠a ≅ ∠e

∠b ≅ ∠f

∠c ≅ ∠g

∠d ≅ ∠h

3.

use pythagorean theorem:

the length of the abcd trapezoid sides:

|ab| = 3 cm

|bc| = 10 cm

|cd| = 3(3) cm = 9 cm

|da| = 8 cm

the perimeter of abcd = 3 + 10 + 9 + 8 = 30 cm

the ratio of perimeters of the tarapezoids is equal 2 : 3.

substitute:

      cross multiply

      divide both sides by 3