bagaimana cara menyelamatkan diri aaat terjadi bencana gempa bumi​

B. -179

Penjelasan dengan langkah-langkah:

rumus barisan Un = 2n - n²

Cari Suku ke-10

Un = 2n - n²

U10 = 2(10) - 10²

U10 = (2×10) - (10×10)

U10 = 20 - 100

U10 = -80

Cari Suku ke-11

Un = 2n - n²

U11 = 2(11) - 11²

U11 = (2×11) - (11×11)

U11 = 22 - 121

U11 = -99

Jumlah suku ke-10 dan suku ke-11

= U10 + U11

= (-80) + (-99)

= (-80) - 99

= -179 (Opsi B)

∴ Jadi, hasilnya adalah -179

Detail jawaban

• Mapel : Matematika
• Kelas : IX (9)
• Materi : Bab 2 - Barisan dan Deret bilangan
• Kode kategorisasi : 9.2.2
• Kata kunci : persamaan barisan bilangan.

Jawaban:

-5

Penjelasan dengan langkah-langkah:

= 15 - -5 × -4

= 15 - (5 × 4)

= 15 - 20

= -(20 - 15)

= -5

[tex] [/tex]

15 - ( - 5 ) × ( - 4 )

15 - ( 5 × 4 )

15 - 20

[tex]\boxed{\bf\blue{ - 5}}[/tex]

Perintah soal di atas adalah melengkapi dan membuat kalimat dengan present continuous. Berikut ini adalah jawaban untuk kalimat-kalimat di atas dengan menggunakan present continuous.

a. Complete the rule and the table

Question: Am I working?

Positive: you/we/they're (are) working.

Question: Are you/we/they working?

Short answer: Yes. you/we/they are.

                       No, you/we/they aren't.

Negative: Is he/she/it working?

Short answer: Yes, he/she/it is.

                        No,  he/she/it isn't.

b. Complete the sentences

a. 2. Andy and Citra are in the living room. They are watching a film on DVD.

3. Mega! You aren’t listening to me!

4. I can’t talk now. I am doing my homework.

5. A: Are you watching this programme? No: No, I’m not. Watch a different one if you want.

6. A: Dewi’s upstairs in her room. B: Oh? Really? Is she having a rest?

c. Look at the pictures and complete the sentences

2. Look! Our cat Max is watching television.

3. My parents are listening to music.

4. I am not enjoying this programme.

5. It’s a great game – and we are winning.

6. Sandra is not doing her homework.

Present continuous merupakan tense yang digunakan untuk aktivitas yang sedang berlangsung dan belum selesai dikerjakan pada saat dibicarakan. Formula present continuous tense adalah

(+) subject + am/is/are + verb-ing

(-) subject + am/is/are + not+ verb-ing

(?) am/is/are + subject + verb-ing?

Materi tentang present continuous pada https://brainly.co.id/tugas/5591892

#BelajarBersamaBrainly

#SPJ1

Jawaban:

D.duduk sambil tangan berputar kedepan