Answer:
I dopnt know
Step-by-step explanation:
Im asking the same question lol
Concentric circles because if a line is tangent to one circle, it would only intersect teh other
Answer:
(7,48)
Step-by-step explanation
the books go up by ten and the days go up by 2
√7x-49<span>√x Tell if you need to see the work
</span>
Answer:
is equivalent to
and 
is equivalent to
and
.
The expressions which are equivalent to neither:
and 
Step-by-step explanation:
Given the expressions:
1) 
2) 
To find:
The expressions equivalent to the given expressions.
or the expressions which are not equivalent to any of the given expressions.
Solution:
First of all, let us solve the brackets from the given expressions.
can be written as
(because when we multiply a negative sign with negative, it becomes positive.)
Similarly
can be written as
(because when we multiply a positive sign with negative, it becomes negative.)
Therefore, the answer is:
is equivalent to
and 
is equivalent to
and
.
The expressions which are equivalent to neither:
and 