Question

tolong bantu jawab yaa soalnya aku bingung ni​ makasiih ya​

Answer 1

Jawaban:

2a. a=8. b=1

2b. U1=a=8. U2=9 U3=10

3. 14; 26; 38; 50; 63; 74; 86

Penjelasan dengan langkah-langkah:

[tex]u40 - u9 = 47 - 16 = 31 \\ 31 = u40 - u9 \\ 31 = (a + 39b) - (a + 8b) \\ 31 = 39b - 8b \\ 31 = 31b \\ b = 1 \\ u9 = a + 8b \\ 16 = a + 8(1) \\ a = 8[/tex]

3. U7-U1 = 86 - 14 = 72

72 = U7 - U1

72 = (a + 6b) - (a + 0b)

72 = 6b

b = 12

U1 = 14 = a