3000000...........
10^6 =1000000 (3) = 3000000
Answer:
-3+7 > -10-2
Step-by-step explanation:
-3+7 = +4
-10-2 = -12
∴ +4 > -12
[1] y = -x + 5
3x + 3•(-x +5) = 10
0 = -5 => NO solution
She worked as a carpenter for 12 hours and as a blacksmith for 18 hours.
Assuming you mean she earned $20 as a carpenter and $25 as a blacksmith per hour, with a total of 30 hours for $690,
let c represent carpenter hours and b for blacksmith hours.
20c + 25b = 690
c + b = 30
Subtract b from each side so that c = 30 - b
Plug this value into the first equation
20(30 - b) + 25b = 690
600 - 20b + 25b = 690
600 + 5b = 690
5b = 90
b = 18
To find c, plug this value of b into the other equation
c + 18 = 30
c = 12
