Question

Tolong bantu jawab nomor 23 beserta caranya ya. Terima kasih :)

Answer 1

22. B = baskoro
I = ibunya
I = B + 28
I = 5B
5B = B + 28
4B = 28
B = 7
I = B + 28
I = 7 + 28
I = 35
umur ibunya = 35 tahun

23. s(t) = vt + c
s(2) = 30 --> 2v + c = 30
s(7) = 85 --> 7v + c = 85
----------------------------------(-)
- 5v = - 55
V = 11 -->  c = 30 - 2v = 8
s(t) = 11t  + 8

t = 2 menit = 2x60 = 120 detik
s(120) = 11(120) + 8 = 1.328

24.
(1, 2) , (2, 6), (3, 12), (4, 20),...(7, a)
x = 1....2.....3.....4....5....6.....7
y = 2....6...12...20..30...42...56
..
a = 56