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3 years ago

Simplify the expression. 6x - 3 -9x - 2 Like terms

Mathematics

1 answer:

Alexeev081 [22]3 years ago

5 0

6x-3-9x-2

6x-9x = -3x

-3-2 = -5

the the equation is: -3x-5

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Lisa, an experience shipping clerk, can fill a certain order in 10 hours. Bill, a new clerk, needs 13 hours to do the same job.

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3 years ago

8÷2(2+2). I need help finding the correct answer. 8÷2(2+2). I need help finding out if it is 1 or 16.

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Answer:

The answer is 16

Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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Give the properties for the equation -2x 2 - y + 10x - 7 = 0.

Sladkaya [172]

Given:

The quadratic equation is

$-2x^2-y+10x-7=0$

To find:

The vertex of the given quadratic equation.

Solution:

If a quadratic function is $f(x)=ax^2+bx+c$ , then

$Vertex=\left(\dfrac{-b}{2a},f(\dfrac{-b}{2a})\right)$

We have,

$-2x^2-y+10x-7=0$

It can be written as

$-2x^2+10x-7=y$

$y=-2x^2+10x-7$ ...(i)

Here, $a=-2,b=10,c=-7$ .

$\dfrac{-b}{2a}=\dfrac{-10}{2(-2)}$

$\dfrac{-b}{2a}=\dfrac{-10}{-4}$

$\dfrac{-b}{2a}=\dfrac{5}{2}$

Putting $x=\dfrac{5}{2}$ in (i), we get

$y=-2(\dfrac{5}{2})^2+10(\dfrac{5}{2})-7$

$y=-2(\dfrac{25}{4})+\dfrac{50}{2}-7$

$y=\dfrac{-50}{4}+25-7$

$y=\dfrac{-25}{2}+18$

On further simplification, we get

$y=\dfrac{-25+36}{2}$

$y=\dfrac{11}{2}$

So, the vertex of the given quadratic equation is $\left(\dfrac{5}{2},\dfrac{11}{2}\right)$ .

Therefore, the correct option is A.

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2 years ago

The simplified form of 5√2 - 4√2/ √2 is... its estimated value is..

ankoles [38]

Answer:

2 answers available depending on paranthesis

Step-by-step explanation:

5√2-4√2/√2 = 5√2 - 4

if there is a parenthesis like

(5√2 - 4√2)/√2 = 1√2/√2 =1

7 0

2 years ago