3 years ago

Please help, I don't understand.

Mathematics

1 answer:

galben [10]3 years ago

4 0

Answer:

I think it's C. , but I'm not too sure . You should double check to see if it's correct.

You might be interested in

How many thirds are in 3 hours?

natta225 [31]

There are 60 thirds in three hours

8 0

3 years ago

Read 2 more answers

Verify that the roots of 5x²- 6x -2 = 0 are <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%20%2B%20%5Csqrt%7B19%7D%20%7D%7B5%7D%2

Mice21 [21]

Answer:

Proof below.

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:

$5x^2-6x-2=0$

Define the variables:

a = 5
b = -6
c = -2

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

$\implies x=\dfrac{-(-6) \pm \sqrt{(-6)^2-4(5)(-2)}}{2(5)}$

$\implies x=\dfrac{6 \pm \sqrt{36+40}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{76}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4 \cdot 19}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4}\sqrt{19}}{10}$

$\implies x=\dfrac{6 \pm2\sqrt{19}}{10}$

$\implies x=\dfrac{3 \pm \sqrt{19}}{5}$

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

$x=\dfrac{3 + \sqrt{19}}{5} \:\textsf{ and }\:x=\dfrac{3 - \sqrt{19}}{5}$

Learn more about the quadratic formula here:

brainly.com/question/28105589

brainly.com/question/27953354

3 0

2 years ago

Read 2 more answers

A store is having a sale on used video game. Each game cost $12. Write an algebraic expression to represent the cost of buying v

alexandr1967 [171]

The algebraic expression you would write is 12v

8 0

3 years ago

How do you vibe check

ziro4ka [17]

Answer:

good question.... maybe by the way a person acts

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

32/100 simplest form

trapecia [35]

Answer:

8/25 is the simplest form

4 0

3 years ago