You would need to distribute the parenthesis. so the equation will be 12r-12<-12+8r
The answer should be impossible, as it never said there were blue cards in that bag.
<u>520 m²</u>
Here given:
length: 10 m
width: 8 m
height: 10 m
surface area of rectangular prism:
2(lw+hw+hl)
2(10*8+10*8+10*10)
2(80+80+100)
2(260)
520 m²
A) -180m
b) 510-180=+330m
+330/45=7.333m/s
c) total distance = 840m
average speed = 840/105
= 8m/s