Question

ayudaaaaaaaaaaaaaaaaaaaaaa por favor
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Answer 1

Respuesta:

bueno yo sé si quieres te explico

Answer 2

Respuesta:

1) 21×4 + 8×4

= 84 + 32

= 116

12 + 5×20

= 12 + 100

= 112

-15 + 22 + 9×3

= -15 + 22 + 27

= 34

10×3 + 4×-7

= 30 - 28

= 2

48/4 + 12

= 12 + 12

= 24

36 - 15 - 8×2

= 36 - 15 - 16

= 5

20/2 + 24/4

= 10 + 6

= 16

(45×5) - 78

= 225 - 78

= 147

4² + 5² - 6²

= 16 + 25 - 36

= 5

28 + 36/6

= 28 + 6

= 34

80 + 12 - 8×12

= 80 + 12 - 96

= -4

2) 12 + 19 + (30×4)

= 12 + 19 + 120

= 151

(7×9) - 65

= 63 - 65

= -2

5 (4×4) - 72

= 5 × 16 - 72

= 80 - 72

= 8

11×4 - 6×7

= 44 - 42

= 2

(4-1) ×12 + 4

= 3×12 + 4

= 36 + 4

= 40

(5×6) - (7×10)

= 30 - 70

= -40

2 + (6+4+10) - 15

= 2 + 20 - 15

= 7

4 × (13×4) + 14

= 4×52 + 14

= 222

6 × (7×4) - 48

= 6×28 - 48

= 168 - 48

= 120

6 - (12×4) + 72

= 6 - 48 + 72

= 30

7 × 6/2 + 5

= 7×3 + 5

= 21 + 5

= 26

Áreas:

Cuadrado:

Datos: 7/10 cm

A = L²

A = 7/10 cm

A = 0,7² cm

A = 0,49 cm²

Rectángulo:

Datos: base = 12,5 cm altura = 6/9

A = Base × altura

A = 12,5 cm × 6/9

A = 12,5 cm × 0,66 cm

A = 8,25 cm²

Explicación paso a paso:

Espero haberte ayudado :)