Quiz

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1. x = 60

A. x + y = 100
B. cos(x) = ??

2. 3, 6, 9, 12, 15 ….

A. tentukan jumlah semua bilangan sampai suku ke 20 ??

B. temukan suku ke 20 = ??

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Quiz

Nomor 1

x = 60

x + y = 100

60 + y = 100

y = 100 – 60

y = 40

cos x = ….?

cos 60° = ½

Nomor 2

3, 6, 9, 12, 15

a = 3

b = 6 – 3

= 3

  • S20

U20 = 3 + (20 – 1) × 3

= 3 + 19 × 3

= 3 + 57

= 60

S20 = 20/2 × (3 + 60)

= 10 × 63

= 630

  • U20

U20 = 3 + (20 – 1) × 3

= 3 + 19 × 3

= 3 + 57

= 60

Gambar Jawaban

Penjelasan dengan langkah-langkah:

1. x = 60

A. x + y = 100

60 + Y = 100

y = 100 – 60

y = 40

B. cos(x) =

cos 60°

½

2. 3, 6, 9, 12, 15 ….

A. tentukan jumlah semua bilangan sampai suku ke 20 ??

U20

3 + 19 x 3

3 + 57

60

S20

20/2 x (3 + 60)

20/2 x 63

10 x 63

630

B. temukan suku ke 20

U20

3 + 19 x 3

3 + 57

60

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