Question

proszę szybko bo na jutro

Answer 1

4)

( -3  1/3  : 1, 5 ) – (- 3  1/3 * 1,5) =  (-10/3 : 15/10) –(-10/3 * 15/10) = ( - 10/3 * 10/15) – ( -150/30) =

= -100/45 + 5 = - 20/9 + 5 = - 2  2/9  + 5 =  2  3/9

Odp. B

 

5)

1/5 *(-0,5 + 1)/(-0,5 – 1) = 1/5  * 0,5/(-1,5)= 1/5 * (  ½ : ( -15/10)) = 1/5 * ½  * ( -10/15 )=

= 1/5 * ½ * (-2/3) = - 2/30 = - 1/15

Odp. D

 

6.

a = ½ ((-(-3)) – 4)² = ½ (3-4)² =  ½ * 1² = ½

b = [ - 2² - (-1)³] * (-1) = [ - 4 + 1] * (-1) = (-3) * (-1) = 3

( 3 :1/2) * 100% = ( 3 *2) *100% = 600%

odp. D