Why are vials made from vapor glass stronger then typical vials? I. they contain aluminum instead of boron.
II. They submerged in hot salt bath.
III. They formed out of long glass tubes.

A) I
B) I and II
C) I and III
D) I, II, and III

2

Explanation:

I'm not that sure plz tell me if this is right

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

the answer is 75.0%.