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3 years ago

3x+(2-4x) step by step

Mathematics

2 answers:

aleksandrvk [35]3 years ago

3 0

First distribute the invisible 1 to the numbers in the parenthesis.

3x + 2 - 4x

Combine like terms.

-x + 2

liubo4ka [24]3 years ago

3 0

Answer:

-x +2

Step-by-step explanation:

3x+(2-4x)

Combine like terms

3x-4x+2

-x +2

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solmaris [256]

My answer to this question C

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3 years ago

Simplify <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%5E%7B2%7D%20%2B%2012x%20%2B%2036%20%7D%7Bx%5E%7B2%7D%20%2B%204x%20

kolbaska11 [484]

Answer:

(x-2)/(2x+8)

Step-by-step explanation:

The first step to solve this expression is to use a² - 2a b + b² = (a - b)² to factor the expression

Factor out 2 from the expression

Write 2x as a difference

Factor out x from the expression

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Reduce the fraction with x - 2

Finally,, distribute 2 through the parenthesis to find your answer

This means that the correct answer to your question is (x-2)/(2x+8)

3 0

3 years ago

Read 2 more answers

Integrate the following

enot [183]

I suppose you mean to have the entire numerator under the square root?

$\displaystyle\int_2^4\frac{\sqrt{x^2-4}}{x^2}\,\mathrm dx$

We can use a trigonometric substitution to start:

$x=2\sec t\implies\mathrm dx=2\sec t\tan t\,\mathrm dt$

Then for $x=2$ , $t=\sec^{-1}1=0$ ; for $x=4$ , $t=\sec^{-1}2=\frac\pi3$ . So the integral is equivalent to

$\displaystyle\int_0^{\pi/3}\frac{\sqrt{(2\sec t)^2-4}}{(2\sec t)^2}(2\sec t\tan t)\,\mathrm dt=\int_0^{\pi/3}\frac{\tan^2t}{\sec t}\,\mathrm dt$

We can write

$\dfrac{\tan^2t}{\sec t}=\dfrac{\frac{\sin^2t}{\cos^2t}}{\frac1{\cos t}}=\dfrac{\sin^2t}{\cos t}=\dfrac{1-\cos^2t}{\cos t}=\sec t-\cos t$

so the integral becomes

$\displaystyle\int_0^{\pi/3}(\sec t-\cos t)\,\mathrm dt=\boxed{\ln(2+\sqrt3)-\frac{\sqrt3}2}$

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3 years ago

The Sanchez family is planning a party. They want to budget spending $25 per guest. They already spent $200 on supplies and will

OverLord2011 [107]

Answer:

Step-by-step explanation:

20×25 = 500

20 guest

25 dollars per guest

75s+200= 500

75s = 300

S = 4

They can afford to buy 4 cases of snacks and stay within their budget.

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3 years ago

4 1/3 divided 5 1/6 Please help me!

Effectus [21]

Answer:

6/31

Step-by-step explanation:

4 1/3 ➡ 13/3

5 1/6 ➡ 31/6

to divide two rational expression you should turn the second number upside-down(finding its reciprocal) then multiply them :

13/3 × 6/31 = 26/31

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3 years ago

3x+(2-4x) step by step​

3x+(2-4x) step by step