Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8.

Answers

Answer 1

Answer:

Answer:

f(x) = − $(1)/(8)$ $(x-2)^(2)$ + 6

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Answers

Answer:

Step-by-step explanation:

Multiply: (0.6x4 )(0.2x6 )

Answers

0.6x^4*0.2x^6
0.6*x^4*0.2*x^6
(0.6*0.2)*(x^4*x^6)
0.12*x^10
Your answer is:
0.12x^10

Which number is equal to 4/2

Answers

Answer:

Step-by-step explanation:

4/2 is the same as 4 divided by 2

Please someone help me with this, it’s due today

Answers

Answer:

~91 chirps/min

Step-by-step explanation:

This exercise is asking us to estimate based on the values in the table. If we know the temperature is 65°F, let's find the closest values given to interpolate (assuming the data is fairly linear, which it appears to be).

Looks like the closest ones are 60° and 68°. We will look at their corresponding chirps/min and guess a number in between those two.

60° -> 81 chirps/min

68° -> 97 chirps/min

Because 65 is closer to 68 than 60, we expect our result to be closer to 97 than 81.

slope = rise/run

$(97-81)/(68-60)$ = $(16)/(8)$ = 2 chirps/min/°F. So for every °F increase, we expect to increase by 2 chirps/min.

60+5 = 65, so let's add 2*5 = 10 chirps/min to 60 to get 91 chirps/min. This corresponds with what we would have guessed.

84-63i in conjugate form?.

Answers

Conjugate form of complex number:
z = a + b i is a - b i
and for : z = a - b i is : a + b i
Conjugate form of 84 - 63 i is : 84 + 63 i

Choose the correct product of (9x − 5)(9x + 5).81x2 + 90x + 25
81x2 − 25
81x2 + 25
81x2 − 90x + 25

Answers

Hi,
(a+b)(a-b=a²-b²
Thus (9x)²-5²=81x²-25

Answer:

The Answer is B

Step-by-step explanation:

(9x−5)(9x+5)

=(9x+−5)(9x+5)

=(9x)(9x)+(9x)(5)+(−5)(9x)+(−5)(5)

=81x2+45x−45x−25

=81x2−25

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