Answer:
y = 2.25x
Step-By-Step Explanation:
If I divide y by x, in any of the tables, it is always 2.25.
y ÷ x = 2.25
Then, I can multiply x on both sides to make the equation showing the proportional relationship.
y ÷ x × x = 2.25 × x
y = 2.25x
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Answer:
16 and 4
Step-by-step explanation:
Let (x+y) =20 and (x-y)=12 then:
Isolate for x in each equation
x=20-y and x=12+y
Set the equations to equal each other since the value of x should be the same for both
20-y = 12+y
Rearrange so that y is on one side and the numbers are on the other
8 = 2y
y= 8/2
y= 4
Now substitute the y- value back into either of the original equations
x+y= 20
x+4 = 20
Rearrange and isolate x
x = 20-4
x = 16
So the two values are 16 and 4
Answer: B. X =
Step-by-step explanation:
sec(45) = hyp/12
12sec(45) = hyp
hyp = 16.9
cot(60) = x/16.9
16.9cot(60) = x
x = 9.7
B. X =
The Answer to the Problem Is B
Answer:
It will take approximately 3.34 hours for the drug to decay to 90% of the original dosage
Step-by-step explanation:
As suggested, we use the formula for exponential decay:
From the given information, the half life of the drug in blood id 22 hours, so that means that it takes that number of hours to go from the initial value , to a final value equal to . Using this information we can find the decay rate "k" by solving for this parameter in the formula, and using the natural log function to bring the exponent down:
Now we use this value for the decay rate "k" to calculate how long it would take to decay to 90% of the original dose;