Answer:
10.5
Step-by-step explanation:
because 10.5x2=21. and 45+13+21=79, 100-79= 21.
Answer:
(4 - 
)(16 + 4 + 
)
Step-by-step explanation:
64 - 
← is a difference of cubes and factors in general as
a³ - b³ = (a - b)(a² + ab + b²), thus
64 -
= 4³ - ( )³
= (4 - )(4² + 4 + ( )² )
= (4 - )(16 + 4 + )
Lets say our problem is 12÷24 which ofc equals 2, well we could figure it out by thinking hmmmm what is 12 x __ that equals 24?
The answer is B. 1/2x12x3+1/2x6x2
