Portfolio01 Complementos De Matematica 2014

1-

(-3)/7+1/3=(-9)/21+7/21=(-2)/21

2-

((-5)/6)∙(2/5)=(-10)/30=(-1)/3

3-

((-3)/8)/(5/2)=(-3)/8∙2/5=(-6)/40=(-3)/20

4-

((-3)/4)^3=(-27)/64

5-

((-3)/4)^3+(-2)=(-27)/64+(-2)/1=(-27)/64+(-128)/64=(-155)/64

6-

3^(-2)∙3^5=3^3

7-

4^6/4^(-2) =4^8=2^16

8-

(2^7 )^3=2^21

9-

3^0∙3^5∙3^(-3)=3^2

10-

(3^(-4) )^(-2)=3^8

11-

X+Y+Z=42 Y=2∙X Z=4∙X

X+2X+4X=42 Y=2∙X

X+2X+4X=42 Y=2∙6

7X=42 Y=12

X=42/7 Z=4∙X

X=6 Z=4∙6

X-FLAVIO Y-ANA Z-ADEMIR Z=24

12-

X+Y=580

Y=X-140

X+X-140=580

2X=580+140

2X=720

X=720/2

X=360

Y=360-140

Y=220

13-

■(35&180@18&X)

35X=3280

X=3280/35

X=R$ 92,57

14-

■(60&30@80&X) 60X=2400

X=2400/60

X=40 DIAS

15-

■(15&600@40&X)

15X=24000

X=24000/15

X=R$ 1.600,00

16-

■(24,5&28@X&54)

28X=1323

X=1323/28

X=47,25 KM

17-