Which formula represents a binary compound

A binary compound is one formed by two different types of atoms

Explanation:

A binary compound is one formed by two different types of atoms. Examples:

H202 (hydrogen peroxide, known as hydrogen peroxide)

CO (carbon monoxide)

answer; blank (1); /// (2)///(3)///highblank(4)//low;

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.