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3 years ago

Helppppppp meeeeeeee pleaseeeeee

Mathematics

2 answers:

Papessa [141]3 years ago

8 0

The answer should be D because the greatest gain should be at the end

hram777 [196]3 years ago

3 0

The answer should be d, zero comes next after negative numbers on the number line and so on

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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:

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3 0

2 years ago

Read 2 more answers

How to order the following fractions 3/4 9/16 3/16 7/8 3/8

Dimas [21]

Comparison of fractions is easiest when they all have a common denominator, in this case we can make them all have a common denominator of 16...

12/16, 9/16, 3/16, 14/16, 6/16 so from least to greatest...

3/16, 3/8, 9/16, 3/4, 7/8

7 0

3 years ago

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Which expressions equivalent to 3^128x

enot [183]

It is 8x√2x i hope this helps if not my bad.

3 0

3 years ago

Right Answer to theese three questions please???

Scilla [17]

I hope this helps you

4 0

3 years ago

Use the elimination method to solve the system of equations. 3x-5y= -16 2x+5y=31

Sholpan [36]

5x = 15
x = 3

3(3) - 5y = -16
9 - 5y = -16
5y = -16 - 9
5y = - 25
y = - 5

(3, -5)

8 0

3 years ago