The metric system is also known as the si system english system french systeme universal system

The correct answer is the SI system.

Explanation:

The metric system refers to a globally acclaimed decimalized measurement system. It is used all over the world and is the most general system of measures and weights. It is now called the SI or the International System of Units.  

It is used in the measurement of everyday things like the height of the person, the mass of a sack of flour, the volume of the fuel in the tank, and the speed of a car. It also has an application in science, trade, and industry field.  

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.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."