<span>x = 2, y = 1
= 3*2 + 7*1
= 6+7
= 13
Hence, (2, 1) is the answer.</span>
The perimeter becomes double when each side is twice as long as the original.
According to the statement
we have given that the perimeter of a rectangle is 24 inches. and we have to find that the what effect does this enlargement have on the perimeter.
So, For this purpose, we know that the
A rectangle is a parallelogram all of whose angles are right angles especially : one with adjacent sides of unequal length.
The formula to find the perimeter of rectangle is 2(L + B)
And we the length is goes to increased by double then the perimeter will also goes to double.
Because perimeter is directly proportional to the length and breadth of rectangle.
So, The perimeter becomes double when each side is twice as long as the original.
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The total number of passengers are: 18+1=19
Ms Reilly paid : 19 *$86 = $1634
Answer:
the 2nd one
Step-by-step explanation:
Answer:
Sugar will dissolve to half of it's amount in 2.41 minutes.
Step-by-step explanation:
The given question is incomplete; here is the complete question.
When the sugar is dissolved in water, the amount A that remains undissolved after t minutes satisfies the differential equation
If 25% of the sugar dissolves after 1 min, how long does it take for half of the sugar to dissolve.
The given differential equation is
In other form, dA = -kA.dt
We further integrate the equation,
lnA = -kt + c
Or
A = -----(1)
Here is a constant.
For t = 0,
Let
Therefore, equation (1) will become
A =
If sugar dissolves 25% in 1 minutes then undissolved sugar will be
100 - 25 = 75%
Now from the equation
By taking natural log on both the sides
k = 0.2877
Now we have to calculate the time to dissolve half of the sugar, that means half the sugar will be undissolved.
Form the equation,
ln(0.5) =
0.6931 = 0.2877t
t = 2.41 minutes