A sum is addition. This problem is division... But 4/3= 1.33333.
The answer is 31.8 cause u move the one that is in 18 behind the 3
She earns 20 dollars as a carpenter and 25 dollars as a blacksmith
b+c=30 hours since she works 30 hours a week
25b+20c=690 since she earns 690 dollar totally and earns 25 dollars an hour as a blacksmith and 20 dollars an hour as a carpenter
lets multiply b+c=30 by -20
-20b-20c=-600
if we substract that from
25b+20c=690
5b=90
b=18 she worked as a blacksmith for 18 hours
SA= bh+2ls+lw
SA= 26*10 +40*26(2)+40*10
SA=260+1040(2)+400
SA=260+2080+400
SA=2740
Answer:
v=2
Step-by-step explanation:
9v=16+v
9v-v=16
8v=16
v=16/8
v=2
