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2 years ago

Which table represents a function?

Mathematics

1 answer:

zalisa [80]2 years ago

7 0

Answer:

Step-by-step explanation:

to be a function, there has to be exactly one x for every y. if there is more than one per y, it makes it not a function. so, if there is two of the same number in the x, it's not a function.

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Find the exact solutions of x2 − 3x − 5 = 0 using the quadratic formula. Show all work! 75 points please help!!!!!

noname [10]

Answer:

$x=\dfrac{3+ \sqrt{29}}{2}, \quad \dfrac{3- \sqrt{29}}{2}$

Step-by-step explanation:

Quadratic Formula

$x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\quad\textsf{when }\:ax^2+bx+c=0$

Given quadratic equation:

$x^2-3x-5=0$

Define the variables:

$\implies a=1, \quad b=-3, \quad c=-5$

Substitute the defined variables into the quadratic formula and solve for x:

$\implies x=\dfrac{-(-3) \pm \sqrt{(-3)^2-4(1)(-5)}}{2(1)}$

$\implies x=\dfrac{3 \pm \sqrt{9+20}}{2}$

$\implies x=\dfrac{3 \pm \sqrt{29}}{2}$

Therefore, the exact solutions to the given quadratic equation are:

$x=\dfrac{3+ \sqrt{29}}{2}, \quad \dfrac{3- \sqrt{29}}{2}$

Learn more about the quadratic formula here:

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8 0

1 year ago

Read 2 more answers

What is the value of x? Enter your answer in the box. cm

pochemuha

Answer:

=94 cm

Step-by-step explanation:

Using the Triangle angle bisector theorem

We can find the value for YK

TV VY

------- = -----------

TK YK

95.2 34

------- = -----------

168 YK

Using cross products

95.2 * YK = 34* 168

Divide each side by 95.2

YK = 34* 168/95.2

YK =60

We want to find VK

VK = VY+YK

= 34+60

=94 cm

3 0

3 years ago

Please help!!! I really need to solve this

nlexa [21]

This problem is already a bit more simple since they give you the amount of fabric per sock. Now, to solve, you will want to divide 9 3/4 by 5/6. However, if you don't have a calculator, it's rather inconvenient to solve with a fraction, so convert the fraction to a decimal, which should leave you as 9.75 divided by .83333333. Your final answer should be somewhere around 11.7 socks. Since you can't make 7/10 of a sock, your answer should be around 11 socks.

7 0

2 years ago

Describe at least two similarities between constructing a perpendicular line through a point on a line and constructing a perpen

Vitek1552 [10]

The similarities between constructing a perpendicular line through a point on a line and constructing a perpendicular through a point off a line include:

Both methods involve making a 90-degree angle between two lines.
The methods determine a point equidistant from two equidistant points on the line.

<h3>What are perpendicular lines?</h3>

Perpendicular lines are defined as two lines that meet or intersect each other at right angles.

In this case, both methods involve making a 90-degree angle between two lines and the methods determine a point equidistant from two equidistant points on the line.

Learn more about perpendicular lines on:

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3 0

1 year ago

There are 1,620 minutes of music to be put on 9 CD's. If the same number of minutes fits on each CD, how many minutes of music f

irakobra [83]

Answer:

180 minutes

Step-by-step explanation:

take 1,620 divide it by 9 and there is your answer

hope this helped