We have the equation xy-7y=49.
First, we factor out the common term for "y"
y(x - 7) = 49
Now, divide both sides by x - 7.
y = 49/x-7 <====
Answer:
D) x=9
Step-by-step explanation:
3x+4=2x+13
3x+4-2x=2x+13-2x
x+4=13
x+4-4=13-4
x=9
hope this helps
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Answer:
2.4 miles per hours
Step-by-step explanation:
if she traveled 1/5 of a mile in order for you ro do this you must first teun it into a full mile so times it by the required amount to equal one which would be five.
1/5 of a mile x 5 = 1
you must do this also to the time
5 minutes x 5 = 25 minutes
it takes her 25 minutes to travel one mile so because miles per hour is a ration you must find the amount in hours and not minutes.
So you must divide the hour equivilent by 25 minutes.
so if 1 hour equals 60 minutes
60 divided by 25 = 2.4
that is how you find miles per hour
Dimensions of the room in cm = 2.54 x 12 by 15 x 2.54 by 2.54 x 8.5 = 30.48 by 38.1 by 21.59
Volume of the room in cubic cm = 30.48 x 38.1 x 21.59 cubic cm = 25,072.21 cubic cm
Given that the density of air at room temperature is
, thus the mass of air in the room = 25,072.21 x 0.00118 = 29.59 g = 0.0296 kg
Given that the lethal dose of HCN is approximately 300 mg HCN per kilogram of air when inhaled, thus the <span>amount of HCN that gives the lethal dose in the small laboratory room is given by 300 x 0.0296 =
8.88 mg.</span>
Answer: w=-6/14
Step-by-step explanation:
First you are going to put one equation on top of the other and subtract. Then you will use your new equation to combing like terms then divide your end result by your w value and make an improper fraction.