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3 years ago

11

What is the equation of the line that passes through the points (2, -1) and (6, 1)?

1 answer:

monitta3 years ago

4 0

The answer should be A.

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Any chance anyone can help me if the last question I had post

german

Yes i can the answer would be question

6 0

3 years ago

Chelsea makes $9.00 an hour working at Chick-Fil-A. She plans to buy some music for her phone and Air Pods that cost $278.10. Wr

Talja [164]

Answer:

31 hours

Step-by-step explanation:

To at least buy the Air-Pods she will need to work at least 31 hours. You can either round at the beginning or end, I'll demonstrate rounding at the end. Divide $278.10 by $9.00, getting 30.9. You would have to round up to insure you have enough money, getting 31 hours

6 0

3 years ago

Consider the function f given by f(x)=x*(e^(-x^2)) for all real numbers x.

NISA [10]

Answer:

$\frac{\sqrt{\pi}}{4}$

Step-by-step explanation:

You are going to integrate the following function:

$g(x)=x*f(x)=x*xe^{-x^2}=x^2e^{-x^2}$ (1)

furthermore, you know that:

$\int_0^{\infty}e^{-x^2}=\frac{\sqrt{\pi}}{2}$

lets call to this integral, the integral Io.

for a general form of I you have In:

$I_n=\int_0^{\infty}x^ne^{-ax^2}dx$

furthermore you use the fact that:

$I_n=-\frac{\partial I_{n-2}}{\partial a}$

by using this last expression in an iterative way you obtain the following:

$\int_0^{\infty}x^{2s}e^{-ax^2}dx=\frac{(2s-1)!!}{2^{s+1}a^s}\sqrt{\frac{\pi}{a}}$ (2)

with n=2s a even number

for s=1 you have n=2, that is, the function g(x). By using the equation (2) (with a = 1) you finally obtain:

$\int_0^{\infty}x^2e^{-x^2}dx=\frac{(2(1)-1)!}{2^{1+1}(1^1)}\sqrt{\pi}=\frac{\sqrt{\pi}}{4}$

5 0

3 years ago

Read 2 more answers

The amoebas on a petri dish is doubling every 5 minutes. If there are currently 8 amoebas on the dish, how many will there be in

pychu [463]

Answer:

32,768.

Step-by-step explanation:

There are 12 lots of 5 minutes in 1 hour.

The equation is 8*(2^12)

= 8 * 4096

= 32,768.

3 0

3 years ago

(-5,-4), (8,8) what are the answers for these

Evgesh-ka [11]

Answer:

(-5, -4) is -9

Step-by-step explanation:

hope this helps

3 0

3 years ago