B. Both 23 and 187
C. 23
D. 187
Answer:
23
Step-by-step explanation:
apexs
answer:
3b²
step-by-step explanation:
(5a² - b²) - (4a² + 3b²) - (a² - 7b²)
= 5a² - b² - 4a² - 3b² - a² + 7b²
= 3b²
The correct answer is:
Option: A , Option: B , Option: C , Option: D
For a set to be closed under multiplication means if two elements are taken from that set then their multiplication must also belong to the same set.
A)
The product of a perfect cube and a perfect cube.
Let a be a perfect cube of "m"
and b be a perfect cube of "n"
i.e.
Hence,
i.e.
Hence, this set if closed under multiplication.
B)
The product of 0 and 0.
when we take the product of 0 and 0 then the resultant is also zero.
Hence, this set is also closed under multiplication.
C)
The product of a whole number and a whole number.
When we multiply a whole number to a whole number then the product is again a whole number.
This set is also closed under multiplication.
D)
The product of a perfect square and a perfect square.
Let us take two elements of the set as x and y
i.e.
and
Hence,
i.e.
Hence, the set is closed under multiplication.
If you can, please show how you solved/did it for me, I'm really stupid honestly lol.
Answer:
Infinite solution
Step-by-step explanation:
When they equal each other it is an infinite solution