(140 km) x (1 hour / 560 km) = 0.25 hour = 15 minutes
Answer:
x=y+20
Step-by-step explanation:
y=x-20
Swap sides so that all variable terms are on the left hand side.
x-20=y
Add 20 to both sides.
x=y+20
Answer:
9. 108 cm^2 or B
10. 1,080 m^2 or B
Step-by-step explanation:
9.
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=3·8+4·8+5·8+1
2·﹣34+2·(3·4)2+2·(3·5)2﹣44+2·(4·5)2﹣54
= 108
10.
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=15·24+8·24+17·24+1
2·﹣154+2·(15·8)2+2·(15·17)2﹣84+2·(8·17)2﹣174
= 1080
Answer:
4
Step-by-step explanation:
(3-4)+5
-1+5
4