Question

jawab nomor 2 ama 4 aja, kls 9 semester 1, jgn ngawur y​

Answer 1

Penjelasan dengan langkah-langkah:

2) p - l = 15 ====> p = l + 15

p x l = 1.000

l(l+15) - 1.000 = 0

l² + 15l - 1.000 = 0

(l + 40)(l - 25) = 0

l = -40, l = 25

p = 25 + 15

p = 40

ukuran panjang 40 meter, lebar 25 meter.

4) A(-6, 4) ===={½} ===> A'(-3, 2)

B(-4, 6) ===={½} ===> B'(-2, 3)

C(-8, 10) ===={½} ===> C'(-4, 5)