-4 (x - 5) + 3 (a - 7)
First, expand your problem. / Your problem should look like: -4x + 20 + 3a - 21
Second, simplify. / Your problem should look like: -4x + 3a - 1
Answer: -4x + 3a - 1 (C)
Answer:
All solid substances require the same temperature and heat to melt them.
Step-by-step explanation:
Depending on the substance, the required heat to melt it changes, and is not the same for every solid.
I don't understand the question
Answer:
900
Step-by-step explanation
That would be 3 * 300 = 900
Answer:
x = 9; y = 1
Step-by-step explanation:
