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3 years ago

What is the value of w?

Mathematics

1 answer:

natulia [17]3 years ago

3 0

This on is very easy go to my website so i can explain it better for you

https://www.youtube.com/channel/UCaxhPMTZBmFcxAZ4hYpBf_w

Hope this

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Select and use the most direct method to solve 2x(x + 1.5) = -1. Describe and justify the methods you used to solve the quadrati

miskamm [114]

Step-by-step explanation:

Given that,

A quadratic equation,

2x(x + 1.5) = -1

We need to solve the quadratic equation. Firstly we need to simplify the above equation to form it as $ax^2+bx+c=0$ .

So,

$2x^2+3x=-1\\\\2x^2+3x+1=0$

Here, a = 2, b = 3 and c = 1

The roots of the given equation can be given by :

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

Putting all the values we get :

$x=\dfrac{-b\pm \sqrt{b^2+4ac} }{2a}, \dfrac{-b\pm \sqrt{b^2-4ac} }{2a}\\\\x=\dfrac{-3\pm \sqrt{3^2+4(2)(1)} }{2(2)}, \dfrac{-3\pm \sqrt{3^2-4(2)(1)} }{2(2)}\\\\x=\dfrac{-3+1}{4}, \dfrac{-3-1}{4}\\\\x=-\dfrac{1}{2}, -1$

So, the roots of the given equation is -1/2 and -1.

5 0

3 years ago

If the value of x is 3, then what is the value of 2-8x+4x+4

Veronika [31]

Hey there,
2 - 8x + 4x + 4
2 - 8(3) + 4(3) + 4
2 - 24 + 12 + 4
-6

Hope this helps :))

~Top♥

5 0

3 years ago

HELP PLS NEED HELP IF U KNOW THE ANSWER PLS HELP

steposvetlana [31]

Square the -5 then use substitution (just combine the numbers)

5 0

3 years ago

-6/-3 please give explanation

loris [4]

Answer:

Step-by-step explanation:

Remember the rule with negatives. -x/-y=x/y

So -6/-3=6/3

6/3=2

4 0

3 years ago

Read 2 more answers

She has one orange pick for every two green picks how many green picks does she have if she has 12 total picks

Lelechka [254]

She has 6 green picks, because 2*6=12.

5 0

2 years ago