we are given

where
price p( in dollars) of a new smartphone
t is the number of months since January
now, we can solve for t
step-1:
Add both sides by 4t^2


step-2:
Subtract both sides by p


step-3:
divide both sides by 4



step-4:
Take sqrt both sides


so, we get
..............Answer
Answer:
The interpolating polynomial is
.
Step-by-step explanation:
We want to find a quadratic polynomial
such that
,
and
. In order to do this let us write
.
Now, evaluating the polynomial in the points -1, 1 and 2 we get

This relations give us a linear system of equations:

where the
,
and
are the unknowns.
The augmented matrix of the system is

In this matrix it is easy to eliminate the 1's of the first column and get

From this matrix we can find the values of each unknown. Notice that the second row gives us
that yields
.
Then, the third row means
that gives
. So,
.
Finally, the first row is
and substituting is
that yields
.
Therefore, the interpolating polynomial is
.
Correct option is D. Mr. Beebe asks the question in lines 6-7 ("Does . . .
quietly") primarily in order to note an apparent inconsistency.
Mr. Beebe sounds cynical (though he says he is not) of the fact that Lucy Honeychurch is someone who plays the piano beautifully and likes to live quietly. He believes that one these both qualities will 'mingle'. In the given context, it seems like Beebe believes that a person can not be both: good at music and like to live quietly. He thinks that it is reflects an inconsistency in Lucy's personality. Thus D is the best answer.
The lines of passage were -
Does it seem reasonable that she should play piano so wonderfully, and live so quietly? I suspect that someday she shall be wonderful in both. The water-tight compartments in her will break down,
To learn more about passages from given link
brainly.com/question/12555695
#SPJ4
Answer:
19
Step-by-step explanation:
Answer:
r > -178
Step-by-step explanation:
Solving the equations means to find what "r" can be for the equation to be true.
If the sign < confuses you, you can always write = then change it back.
<u>To find "r", we need to isolate it</u>. To do this, we move "r" to the left side, and every other number to the right side. When you move something to the other side, remember you need to <u>do the reverse operation on both sides</u>.
I want to move -195 first. The opposite is +195.
-17 < -195 - r
-17 + 195< -195 + 195- r Add 195 to both sides. 195 cancels out on the right
-17 + 195 < -r Simplify left right by add 195 to -17
178 < -r The opposite of multiply by -1 is divide by -1.
178/-1 < -r/-1 Divide both sides by -1.
178/-1 < r "r" is isolated now. Simplify left side
-178 < r Answer is found. Put variable on left side. Remember the keep the open side of the symbol facing "r".
r > -178 The solution is when "r" is greater than -178.