All dogs are warm-blooded.
All warm-blooded creatures are mammals.
Hence, all dogs are mammals.

A. True
B. False

The sentence, "Hence, all dogs are mammals," is a premise in this argument.

Option 'A' is true.

Step-by-step explanation:

Since  we have given that

All dogs are warm blooded.

It means Dogs ⇒ Warm blooded (1)

and

All warm blooded creatures are mammals.

Warm blooded ⇒ mammals (2)

So,  from Eq(1) and Eq(2), we get that

Dogs ⇒ mammals

⇒ All dogs are mammals.

Hence, Option 'A' is true.

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23