Question

Gente Me ajudeeem por favooor preciso enviar isso ate amanhã

Answer 1

a) 40/32= 100/x

40x = 3200

x = 3200/40

x = 80

b) 3/5 = 6/x

3x = 30

x = 30/3

x = 10

c) 4/6 = 6/x

4x = 36

x = 36/4

x = 9

d) 21/12 = 7/x

21x = 84

x = 84/21

x = 4

e) 8/24 = 4/x

8x = 96

x = 96/8

x = 12

f) x/2x+4 = x+2/25

(2x+4)(x+2) = 25x

${2}^{2} + 4x + 4x + 8 = 25 x$

${2}^{2} + 8x - 25x + 8$

${2}^{2} - 17x + 8$

bhaskara

$\frac{ - ( - 17) + - \sqrt{ { - 17}^{2} - 4 \times 2 \times 8 } }{2 \times 2}$

$\frac{ + 17 + - \sqrt{289- 64} }{4}$

$\frac{17 + - \sqrt{225} }{4}$

$\frac{17 + - 5}{4}$

${x}^{i} = \frac{17 + 5}{4} = \frac{22}{4} = \frac{11}{2}$

${x}^{ii} = \frac{17 - 5}{4} = \frac{12}{4} = 3$