Answer:
A.
Step-by-step explanation:
go to demos calculator and type it in. itll give u the answer kinda. I mean u have to type the thingy and graph it butyoull still find the answer
-6q^2 + 4q^2 + 8q - 9a^2
Combine like terms:
-2q^2 + 8q - 9a^2
You cannot combine q^2 to q because they do not have the same number of exponents!
Answer: 1250 kg.
Step-by-step explanation:
Let x = mass of product A.
y=mass of product B
Then , According to the given statement , we have

Put value of x from (2) in (1) ,we get




Put value of y in (2) ,we get x= 3(1250)=3750 =mass of product A
Therefore, the mass of product B =1250 kg.
Answer:
There is no smoke with an electric train:)