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3 years ago

Can someone help me figure this out? -2(x+8)=6x+8

Mathematics

1 answer:

Lemur [1.5K]3 years ago

4 0

Answer:

x = -3

Step-by-step explanation:

First, distribute:

-2x - 16 = 6x + 8

Then, switch the numbers to one side, and switch the variables to another:

-2x - 6x = 8 + 16

Then, simplify:

-8x = 24

Finally, divide -8 on both sides:

We got x = -3

And we're done!

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How many blocks of concrete cover the sidewalk

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3 years ago

2. (07.02 LC)<br> How many solutions does the equation - 3y + 3y + 4 = 4 have?

Luden [163]

Answer:

infinite

Step-by-step explanation:

to simplify 4=4 meaning all solutions are true

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3 years ago

Determined if the graph represents a polynomial function if it does determine the number of turning points and the least degree

skelet666 [1.2K]

<em>The graph of f is a polynomial function</em>
<em>There are two turning points, namely, x = 0 and x = -2</em>

<h2>Explanation:</h2>

A polynomial function in one variable is given by the form:

$f(x)=a_{n}x^n+a_{n-1}x^{n-1}+\cdots +a_{2}x^2+a_{1}x+a_{0}$

Since you haven't provided any expression, I'll choose the following function:

$f(x)=x^{3}+3x^{2}+3$

So this is indeed a polynomial function. A turning point is an x-value where we have either a local maximum or local minimum. So we need to take the derivative of this functions:

$f'(x)=3x^2+6x \\ \\ Finding \ turning \ points: \\ \\ 3x^2+6x=0 \\ \\ x(3x+6)=0 \\ \\ \\ So: \\ \\ x=0 \\ \\ and \\ \\ \ 3x+6=0 \therefore \ \boxed{x=-2}$

Conclusion:

<em>The graph of f is a polynomial function</em>
<em>There are two turning points, namely, x = 0 and x = -2</em>

<em />

<h2>Learn more:</h2>

Polynomial function: brainly.com/question/13729121

#LearnWithBrainly

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3 years ago

140=2x+2y in standard form

Sedbober [7]

Answer:

it is in standard form

Step-by-step explanation:

your thinking of y intercept not standard

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3 years ago

How many gallons of a 70% antifreeze solution must be mixed with 60 gallons of 20% antifreeze to get a mixture that is 60% a

Flura [38]

We have 60 gallons of 20% antifreeze.

How much 70% antifreeze do we add to get 60% antifreeze?

We'll make "x" the gallons of 70% we must add.

.20 * 60 + .70 x = .60 * (60 + x)

12 + .70x = 36 + .60x

.10x = 24

x = 240 gallons of 70% antifreeze.

Source

1728.com/mixture.htm (see example B)

4 0

3 years ago