Researchers use what groups as dependent variable so that they can be certain of how experimental groups are responding

saveliy_v [14]

What play????
that would help if you could tell us what play

5 0

2 years ago

The access code for a card security system consist of four digits the first digit cannot be 4 and the last digit must be odd. Ho

Deffense [45]

Different codes for access code which are available are: 4000

_ _ _ _

1 2 3 4

1st blank can be filled with the following possibilities, here the conditions are:

1)The first digit cannot be 4

2)The first digit cannot be 0 also since it makes the access code 3 digits hence

From 1 to 9 except 4 there are 8 possible ways to fill that blank

8

2nd blank can be filled with any number between 0 to 9 in 10 possible ways

8 10

3rd blank can be filled with any number between 0 to 9 in 10 possible ways

8 10 10

4th blank can be filled with any odd numbers between 0 to 10 - 1,3,5,7,9

8 10 10 5 = 8 x 10 x 10 x 5 = 4000

Hence to conclude that 4000 available codes are there for the access security card

To know more about permutations and combinations please follow this link

brainly.com/question/1216161

5 0

10 months ago

If sin(1/x^2+1) is an antiderivative for f(x) then.

STatiana [176]

The limit from 1 to 2 of the given antiderivative is; -0.19865

<h3>What is the Limit of the Integral?</h3>

We are given the antiderivative of f(x) as sin(1/(x² + 1)). Thus, to find the limit from 1 to 2, we will solve as;

$\int\limits^2_1 {(sin\frac{1}{x^{2} + 1} )} \, dx = {(sin\frac{1}{2^{2} + 1} )} - {(sin\frac{1}{1^{2} + 1} )}$

⇒ (sin ¹/₅) - (sin ¹/₂)

⇒ 0.19866 - 0.47942

⇒ -0.19865

Complete Question is;

If sin(1/(x² + 1)) is an anti derivative for f(x), then what is the limit of f(x)dx from 1 to 2?

Read more about integral limits at; brainly.com/question/10268976

8 0

2 years ago

Joe Biden did not win the election he is a part of a bigger scam thatn you think follow for more there is something uyou need to

Aleksandr [31]

Answer: Joe Biden did win the election :} ,,,, they even recounted and found more votes for joe that they previously didn't count lolllll,,,,,,,,,, stay mad <3

Explanation:

8 0

2 years ago

Read 2 more answers

Which of the following is NOT part of the respiratory membrane of the lungs

Bumek [7]

That which is NOT part of the respiratory membrane of the lungs is:

A thin layer of ciliated epithelial cells

<h3>What is the respiratory membrane?</h3>

The respiratory membrane is the surface of the lungs where there is an exchange of gases. There are many parts that make up the respiratory membrane of the lungs.

Some of these are; the respiratory mucosa, the adventitia, and the submucosa. The thin layer of ciliated epithelial cells is not a part of the respiratory membrane but is a hair-like structure that helps to remove unwanted substances from the body.

So the correct answer is: a thin layer of ciliated epithelial cells.

Learn more about the respiratory membrane here:

brainly.com/question/7839167

#SPJ1

4 0

2 years ago