3boomilies 7
6b
21. © mp.1 make sense and persevere a
hotel chain is ordering new furnishings.
what is the total cost of 1,000 sheet sets,
1,000 pillows, and 100 desk chairs? 2100
data
22. © mp.6 be precise which number is
tor: 87 or 13.688? how do you know?

answer: a

step-by-step explanation:

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