The explicit formula for arithmetic sequence is:
an=a+(n-1)d
where:
a=first term
d=common difference
given:
a3=22
a(17)=-20
substituting this in our equation we get:
22=a+(3-1)d
22=a+2d
a=22-2d........i
also:
-20=a+(17-1)d
-20=a+16d.....ii
but substituting i in ii we get:
-20=22-2d+16d
-20-22=14d
-42=14d
d=-3
but:
a=22-2d
a=22-2(-3)
a=28
thus the formula will be:
an=28-3(n-1)
thus the first term will be 28
the 2nd term will be:
a2=28-3(2-1)
a2=25
the 3rd term will be:
a3=28-3(3-1)
a3=28-6
a3=22
a4=28-3(4-1)
a4=28-9
a4=15
a5=28-3(5-1)
a5=28-3(4)
a5=28-12
a5=15
Answer:
i dont know man ask your teacher
Step-by-step explanation:
i aint got any steps bro
It is 3.40 * 700 and that is equal to 2380.
Ya got to go $660 + 7% hours later on $450 hours later 00.578 to finish
Answer:
uh is the length of city a and city b's distance on the map 2.2ft? if it is the answer for 3.08 ft for c and d is 375.
Step-by-step explanation:
250/2.2*3.08=375
