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klasskru [66]
3 years ago
13

A popular Internet website is being redesigned. Developers of the website would like feedback from its users regarding the diffe

rent design options. Which of the following sampling methods would be best for this situation?
A.
posting a survey on the website
B.
interviewing customers at a local bookstore
C.
publishing surveys in newspapers nationwide
D.
handing out surveys at malls in major cities
Mathematics
2 answers:
Rasek [7]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Mamont248 [21]3 years ago
3 0
A- Posting a survey on the website
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Answer:

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Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real
garik1379 [7]

The complete question is

"Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real number solutions? (The related quadratic function will have two x-intercepts.) Check all that apply.

0 = 2x^2 – 7x – 9

0 = 4x^ 2 – 3x – 1

The quadratic equations that have real number solutions are; 4x^2 – 3x – 1, and 2x^2 – 7x – 9.

<h3>What is the formula for Discriminant?</h3>

The formula for finding the discriminant is

b^2 - 4ac

The solution contains the term \sqrt{b^2 - 4ac} which will be:

Real and distinct if the discriminant is positive

Real and equal if the discriminant is 0

Non-real and distinct roots if the discriminant is negative

For the quadratic equation 2x^2 - 7x - 9

b^2 - 4ac

= (-7) ^2 - 4( 2) ( -9)\\\\= 49 + 72 = 121

This equation has two real number solutions.

For the quadratic equation 4x^ 2 - 3x- 1

b^2 - 4ac

= (-3) ^2 - 4( 4) ( -1)\\\\= 9 + 16 = 25

This equation will have two real number solutions.

Learn more on discriminant here:

brainly.com/question/1537997

#SPJ1

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2 years ago
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12, Carmen buys 12 roses

I got this by multiplying 4x3=12


3 0
3 years ago
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