Question

(2) find the number of terms in the following series.4,7,10,....,148.
(3 Which term of the sequence- 7,-2,3,8...is 88. (4) Which term of the sequence 4,9,14,19,....is 99. (5)Prove that 20th term of sequence 4,9,14,19,....,99.

Answer 1

Step-by-step explanation:

(2). a=4, d=7-4=3, an=148.

an=a+(n-1)d

148=4+(n-1)3

148-4=(n-1)3

144/3=n-1

48+1=49=n.

(3).a=-7, d=-2-(-7)=-2+7=5, an=88

88=-7+(n-1)5

88+7={n-1)5

95/5=n-1

19+1=20=n.

(4). a=4, d=9-4=5, an=99

99=4+(n-1)5

99-4=(n-1)5

95/5=n-1

19+1=20=n

(5).a=4,d=9-4=5, an=99, n=20

a20=99

=4+(20-1)5

=4+(19)5

=4+95=99.

Hope helps u.

Plz mark as brainliest.

Answer 2

Answer:

answer attached in photo