Answer:
72
Step-by-step explanation:
you just subtract.
In this question , we have to convert 12080 gallons per month to liters per hour .
There are 3.78541 liters in 1 gallons , and there are 30 days in a month, and 24 hours in a day .
So to convert 12080 gallons per month, we have to multiply 12080 by 3.78541 and divide the result by the product of 30 and 24. THat is


Answer:
x = 31
Step-by-step explanation:
AC=BD
3x+7 = 131-x
Subtract 7 from both sides
3x = 124-x
Add x to 3x
4x = 124
Divide by 4
x = 31
Check:
3(31)+7 = 131 - 31
Mulitply 3 times 31 / subtract 131 and 31
93+7 = 100
Add 93 to 7
100 = 100
Answer:
x = 4, y = 12/5
Step-by-step explanation:
2x+5y = 20
6x-5y = 12
----------------- (+)
8x = 32 => x = 32/8 => x = 4
2·4+5y = 20 => 8+5y = 20 => 5y = 12 => y = 12/5