Matematika dibantu yah kakak terimakasihjangan ngasal​

Electric Scooters for Adults Orlando Florida – March 10, 2023

dibantu yah kakak terimakasih
jangan ngasal​

Penjelasan dengan langkah-langkah:

1) a. 5x + 2 = 180–63

5x = 117 – 2

x = 115

5

x = 23°

b. 3y – 8 = 180 – 110

3y = 70+8

y = 78

3

y = 26°

c. 4x – 2y

= 4(23) – 2(26)

= 92–52

= 40°

2)

a. Luas = (14+25)×17/2

= 39×8,5

= 331,5 cm²

b. Luas = (12+32)×15/2

= 44/2 × 15

= 330 cm²

c. Luas = 15×(12+20)/2

= 15×32/2

= 240 cm²

d. Luas = 12/2 × (10 +15)

= 6 × 25

= 150 cm²

3)

a. QR = √(15-10)²+12²

= √(25+144)

= √169

= 13 cm

b. Keliling = 12 + 10 + 15 + 13 = 50 cm

c. Luas = 12/2 × (10 +15)

= 6 × 25

= 150 cm²

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