Question

Tolongg dong kak bantu jawabb ya pakai caranyaa​

Answer 1

Jawaban:

3. U1 = 7-2=5

U2 = 7-4=3

U3 = 7-6=1

U4 = 7-8=-1

U5 = 7-10=-3

4. a. U3=a+(3-1)b

7=a+2b

U10 = a+(10-1)b

35=a+9b

a+2b=7

a+9b=35

-7b=-28

b=4

a=-1

Un=-1+(n-1)4

=-1+4n-4

=4n-5

b. U20 = -1+(20-1)4

= 75