Answer:
where is the list?????
Step-by-step explanation:
Answer:
y = -4/3 x - 1/3
Step-by-step explanation:
y = -4/3 x + b
5 = -4/3 (-4) + b
15 = 16 + 3b
b = -1/3
y = -4/3 x - 1/3
Answer:
5x-2y =80
x+y=30
Step-by-step explanation:
Basically, 5x is the points earned by correct questions (5 points per right answer) and -2x is the points lost by wrong answers (2 points taken away for every wrong answer). The total points the contestant earned is 80, which is why we set this equation equal to 80. Hence, 5x-2y=80.
They also tell us that the contestant answered a total of 30 questions, so x and y combined would be the total number of questions. Hence, x+y=30.
Answer:
y= -2x+1
Step-by-step explanation:
equation of line parallel to given equation is
2x+y+k=0
this pass through 1,-1
substituting the value we get
k=-1
putting value of k in above equation
we get final equation
I'm assuming that you want to know how many hours until they are the same temperature. Here is the equation you can use to figure it out:
40 + 5h= 340-45h
Here is how I would solve it:
40+ 5h= 340 - 45h
+45 h + 45 h
40+50h= 340
-40 -40
50h= 300
/50 /50
h= 6
It will take 6 hours for the two appliances to reach the same temperature, assuming the power doesn't go out. For reference, they would be at 80 degrees.