3x+4y=23
2y-x= -19/ multiply -2
4y + 3x = 23
-4y - 2x = 38
_______________
X = 61
2y - x = -19
2y - 61 = -19
2y = 61 -19
2y = 42
Y = 21
Answer: It helps scientists access info more easily about the elements, in a more efficient and faster way. The periodic table is helpful in seeing atomic and chemical trends by seeing where they are placed on the table.
Explanation:
That's more than 275 million stars per day in the observable universe. Stars keep themselves fueled. They fuse elements together to make new elements.Once the star runs out of hydrogen, the helium atoms fuse together to make carbon.
Answer:
the answer is X
Explanation:
who says it's Z didnt look at the question, z is for the first stage question
