The answer to 84 divided by 4=21.
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
Answer:
22
Step-by-step explanation:
£9.90 = 990p
x is number of 50p stamps
2x* 20 + x* 50 = 990
40x+50x = 990
90x = 990
x = 11
2x = 22
11 50p stamps
22 20p stamps
check:
11*50+22*20 = 550 + 440 = 990
To find the area, you would multiply length times width.
For example, to find the area of problem number 1, I would multiply 8 (length) times 2 (width) to get the area of 16.
I hope this helped! If you need another example, feel free to ask!
:-)
