Expand or factor each of the following expressions to determine which expressions are equivalent.
(3.3
2) (9x2 + 61 + 4)
9x2 + 31 - 20
(3x + 2) (9x2 - 6x + 4)
(31 + 5)(31 - 4)
(31 – 4y)?
273 - 8
(41 – 3y)?
9x2 – 245y + 1672

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7  

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this