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2 years ago

Please help guys. And if u can help me with this topic farther pls message me for the ig or snap

Mathematics

1 answer:

Setler [38]2 years ago

8 0

Answer:

Step-by-step explanation:

108 divided by 2 is 54 making the value of y 4. Hope this helps!

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Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

jeka94

by Quadratic formula , $x^2 + 20 = 2x$ , values of x are $x = 1 \pm (1)i\sqrt{19}}$ . None of mentioned options are correct according to question!

<u>Step-by-step explanation:</u>

Here we have , expression x2 + 20 = 2x or , $x^2 + 20 = 2x$ .

We know that Quadratic formula is :

$x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$

$x^2 + 20 = 2x$

⇒ $x^2-2x+20=0$

$a=1\\b=-2\\c=20$

Putting this value in equation $x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$ :

⇒ $x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$

⇒ $x = \frac{-(-2) \pm \sqrt{(-2)^{2}-4(1)(20)}}{2(1)}$

⇒ $x = \frac{2 \pm \sqrt{4-80}}{2}$

⇒ $x = (\frac{2 \pm 2i\sqrt{19}}{2})$

⇒ $x = 1 \pm (1)i\sqrt{19}}$

Therefore , by Quadratic formula , $x^2 + 20 = 2x$ , values of x are $x = 1 \pm (1)i\sqrt{19}}$ . None of mentioned options are correct according to question!

7 0

2 years ago

Mr downs bought a camera for 56$. this was 80% of the list price. what was the list price

Vsevolod [243]

I got 70 as the list price. If it’s multiple choice and 70 isn’t one of the answers I’m sorry

5 0

2 years ago

Please help me and fast please!!!!

Novosadov [1.4K]

Answer:

b I think

Step-by-step explanation:

it would need to be a positive line so that eliminated A. also D is not it because the calories will go up, and not stay the same. this leaves is with B and C. I think that it is B because you have to start at 0. hope this helped!

4 0

2 years ago

Read 2 more answers

What is the value of (-1/2)-4?

kykrilka [37]

The answer would be A. -16

4 0

2 years ago

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

mariarad [96]

Answer:

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