If a1 = 5; an = 450 and d = 5, what is the value of n? please :D
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If a1 = 5; an = 450 and d = 5, what is the value of n? please :D
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Answer:
n=90
Step-by-step explanation:
an=a1+(n-1)d
a1=5 , an=450 , d=5
Substitute the value
450= 5+(n-1)5
450= 5+5n-5
450=5n
450/5=n
90=n