5x+7=54 how do you do this, im so confused. its 2 equations solving

What does parfocal mean?

A hydrocarbon has molecular formula c3h8. Identify the Class of hydrocarbons it belongs to

The roles of the nurse in working with clients and families include which of the following? A) change agent, educator, advocate B) counselor, educator, care provider C) care giver, leader, advocate D) educator, researcher, manager

Why is it important that scientists conduct multiple observations during an experiment?

What is the advantage of having a folded inner membrane in the mitochondria?

Enzymes are important?

Which periods are older than the Triassic period? Select 3 options. Cambrian Cretaceous Jurassic Permian Silurian

In iceland, the mid Atlantic ridge runs through the center of the contry. What can you conclude about the apperence of iceland many thousands of years from now?

How does loss of biodiversity affect the biosphere

The concentration of potassium is higher in red blood cells than in the surrounding blood plasma. This higher concentration is maintained by the process of (1) circulation (3) excretion (2) diffusion (4) active transport