Please answer the following.

3x3-(9000)=x
x-3+=y
y+x=?

Why do electron microscopes have higher resolving power than light microscopes?

Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.