Answer:
31 scientific calculators
54 graphing calculators
Step-by-step explanation:
X = number of $15 calculators
Y = number of $67 calculators
X+Y = 85 then X = 85-Y
15X+67Y = 4083
substitute for X
15(85-Y)+67Y = 4083
1275 - 15Y + 67Y = 4083
reduce
52Y = 2808
Y = 54
X = 31
Answer:
its the second one y=870x-5300
Step-by-step explanation:
Greetings!
"<span>A machine produces 75 widgets an hour. How many widgets does it produce in 6 minutes?"...
An hour/60 minutes is ten times more than 6.
Therefore, we divide the amount per hour by ten:
75/10
=7.5
The machine produced 7.5 widgets /7 full widgets every six minutes.
Hope this helps.
-Benjamin
</span>
Answer:
10
Step-by-step explanation:
20% of 50
(20/100)×50
=10