68.5 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111 is the answer fam
What we can do is set up an algebraic equation.
our variable can me L for Length
3L+4L+5L=90
now all we have to do is solve
12L=90
---- ----
12 12
L=7.5
now multiple each number in the ratio by 7.5 to find out how long each side is
3 times 7.5 is 22.5
4 times 7.5 is 30
5 times 7.5 is 37.5
the side lengths are 22.5, 30, and 37.5
Roots: ( -2/5 , 0 ) ( 1 , 0 )
Domain: x∈ R
Maximum: ( 3/10 , 49/ 20 )
Vertical intercept: ( 0 , 2 )
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Answer:the number of books that Sally sold is 21
Step-by-step explanation:
Jack sold 126 books. Joe sold 1/2 as many books as many books as jack. This means that the number of books that Joe sold would be
1/2 × 126 = 63
Sally sold 1/3 as many books as joe. This means that the number of books that Sally sold would be
1/3 × 63 = 21 books.
