Answer:
Divide the 1st equation by 2
a + 2c = 19
Divide the 2nd equation by 3
a + c = 13.5
Subtract the 1st equation and the 2nd equation
c = 5.5
Substituting back into the 2nd equation will give:
a + 5.5 = 13.5
a = 8
Step-by-step explanation:
Answer:
humanism
Step-by-step explanation:
read about it thats how you'll know
Answer:
A certain element has 25 protons.
Step-by-step explanation:
Please mark brainliest
I hope this helps you
Area=width×length
Area =5×4x^3
Area =20x^3