lordcaos066
01.11.2019 •
Mathematics
Rafael has 19 shirts to fold. let n be the number of shirts he would have left to fold after folding f of them. write an equation relating n to f. then use this equation to find the number of shirts he would have left to fold after folding 12 of them.
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Ответ:
1) equation relating both
N+F = 19
2)N = 7
Step-by-step explanation:
N+F =19
He folded 12, so F = 12
N = 19-12 = 7
Ответ:
126
Step-by-step explanation:
the formula for sum of arithmatic progression=n/2(2a+(n-1)d)
=9/2 (4+8*3)
=9/2*(28)
=9* 14=126