Answer:
50
Step-by-step explanation:
because forty is eighty percent of 50
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as a mixed number is 
10 x 2 = 20
20 + 3 = 23

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Answer:
78i+52j
Step-by-step explanation:
8(9i+2j)-6(-i-6j)
72i+16j+6i+36j
=78i+52j
N= 18
5/6=15/n you cross multiply them and you get 5n=90
Then you get the n by itself by doing 5n/5 and then you do the same to the other side by doing 90/5 and you get n=18
Answer:
(x/4)+6.5
Step-by-step explanation: