Answer: -6. 4. -3,75. 37.
Step-by-step explanation: -20|+10-2²= -6, since a minus×minus give you a + therefore -2²=4.
2³+(-8)= 12-8=4, a minus×plus gives you a minus.
-2,50+(-1,25)=-2,50-1,25=-3,75. |-10|+|20|-5²-(-2)=-10+20+25+2=37.
As BD is perpendicular....given
ADB AND CDB are 90° ......as BD is perpendicular so 90°
BD= BD .....common line !
The answer is 81 because 27 x 3
