Answer: 20
Step-by-step explanation:
From Question,
60/100 * x = 12
or, x = 12/0.6
or, x=20 Ans:
Answer:
The chemistry club could rent it up to 9 hours(1-9)
Step-by-step explanation:
5x9 is 45,and if you add the 15 dollar fee,it then becomes 60.If they rent the room for more that 9 hours,they have to pay more than 65 dollars
<span>x= 5 + y
28x – 9y = -12
substitute </span>x= 5 + y into 28x – 9y = -12
28x – 9y= -12
28(5 + y) – 9y = -12
140 + 28y - 9y = -12
19y = -152
y = -8
<span>x = 5 + y
</span>x = 5 - 8
x = -3
solution (-3, -8)
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