Let us suppose it will take t hours for the temperature to drop at least 36°F.
We have been given that temperature in Antarctica will decrease 8°F each hour for the next 6 hours.
And we have to find the time to drop the temperature to at least 36°F. At least means greater than equal to.
Therefore, we have the below inequality
Now, we solve the inequality.
Divide both sides by 8, we get
Hence, it will take atleast 4.5 hours to drop the temperature to 36°F.
The answer is A. You can get that in by plugging in and checking or by substitution. In order to use substitution here, you would plug in 3x + 3 into y in the first equation. You would then distribute the 2 and solve for x, which would give you 0. Then you could plug that into either equation to find that y = 3.
Answer:
x = 3,2
Step-by-step explanation:
solve for x by finding a,b,c and then apply the quadratic formula.
Answer:
y=3/5x+3
Step-by-step explanation:
Answer:
=38+x
Step-by-step explanation:
18-2+2x-24÷(x+2) =
16+2x-24-24÷(x+2)
24+16+2x
40+x+2
38+x
