Answer:
so all x's have to be added together.
8x+5x+10x+7x=30x
-2+3=1
1dividedby30=30
x=30
hope this helps
Answer: a
Step-by-step explanation: there is no such number
Answer:
He lost 147.35 marks
Step-by-step explanation:
Take the total marks and subtract the marks he got to find the marks he lost
600-452.65= 147.35
Do the inverse operation:
P(x)+(3x-7)=0
P(x)=-3x+7