Question

Tolong kerjakan ya nomor 20-22 !!!

Answer 1

V = Kecepatan
S = Jarak
T berangkat = Waktu berangkat
Dit : T tiba = Waktu tiba

JAWAB :
V=S/T tiba
60 =90/T tiba
T tiba = 90/60
=3/2 jam = 1 1/2 jam / 1 jam 30 menit
= waktu berangkat + 1 jam 30 menit
05.15 + 01.30
=06.45

V = Kecepatan
S = Jarak
T =Waktu

JAWAB =
V=S/T
T = 07.30 - 06.00
= 01.30 = 1 1/2 jam /01.30 =3/2

= 69 : 3/2
= 69 x 2/3
=46

Semoga membantu !!

Answer 2

20). S = jarak
V = kecepatan
T = waktu

Diketahui:
S = 90 km
V = 60 km/jam
Berangkat = 05.15

Penyelesaian:
T = S/V
T = 90/60
T = 1,5 jam = 01.30
Sampai
= 05.15 + 01.30
= 06.45 (jawaban : A. 06.45)


21).Diketahui :
T = 07.30 - 06.00
= 01.30
= 1,5 jam
S = 69 km

Penyelesaian:
V = S/T
V = 69/1,5
V = 46 km/jam (jawaban: C. 46)

22). Keliling bangun 1
= (2×23)+ 12
= 46+12
= 58 cm
Keliling bangun 2
= 1/2×a×t
= 1/2×16×12
= 1/2×192
= 96 cm

Total keliling
= 58+96
= 154 cm