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alexgriva [62]
3 years ago
13

Simplify (12x-14)-(3x+9)-(-4-1)

Mathematics
1 answer:
Olegator [25]3 years ago
4 0

(12x-14)-(3x+9)-(-4-1)

= 9x-18


12x-3x=9x

-14-9+4+1=-18

*Subtracting a group of numbers in parenthesis is the same as -1 times what every is in the parenthesis.

So it would be (12x-14)+(-3x-9)+(4+1)... which makes the equation alot easier to simplify.

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Three that are equivalent are 12:9 8:6 28:21
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3 years ago
Nathaniel participated in an 18-mile race. He ran 1 2 mile in 1 6 hour. If he ran the entire race at the same pace, how long, in
Softa [21]

Answer:

24 hours

Step-by-step explanation:

set up a ratio:

12 miles = 16 hours

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18 miles =   x hours

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3 0
3 years ago
Solve the following integral.<br><br> <img src="https://tex.z-dn.net/?f=%5Cint4x%5Ccos%282-3x%29dx" id="TexFormula1" title="\int
bagirrra123 [75]

Hi there!

\boxed{-\frac{4x}{3}sin(2-3x) + \frac{4}{9}cos(2-3x) + C}

To find the indefinite integral, we must integrate by parts.

Let "u" be the expression most easily differentiated, and "dv" the remaining expression. Take the derivative of "u" and the integral of "dv":

u = 4x

du = 4

dv = cos(2 - 3x)

v = 1/3sin(2 - 3x)

Write into the format:

∫udv = uv - ∫vdu

Thus, utilize the solved for expressions above:

4x · (-1/3sin(2 - 3x)) -∫ 4(1/3sin(2 - 3x))dx

Simplify:

-4x/3 sin(2 - 3x) - ∫ 4/3sin(2 - 3x)dx

Integrate the integral:

∫4/3(sin(2 - 3x)dx

u = 2 - 3x

du = -3dx ⇒ -1/3du = dx

-1/3∫ 4/3(sin(2 - 3x)dx ⇒ -4/9cos(2 - 3x) + C

Combine:

-\frac{4x}{3}sin(2-3x) + \frac{4}{9}cos(2-3x) + C

7 0
3 years ago
Read 2 more answers
Can I please get some help on this...I have tried to many times...
Bezzdna [24]

Answer: A

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\sqrt{x-2} =0

When you solve that, you get x=2. You know your domain is x≥2, but there is as asymptote at x=11. That means the graph never reaches x=11, but gets very close. You find that by setting the entire equation equal to 0 and solve from there.

5 0
4 years ago
Express the volume of the box as a<br>polynomial in the variable x
Whitepunk [10]

The volume of the box as a polynomial in the variable x is x(12 - 2x)(7 - 2x)

<h3>How to determine the volume?</h3>

The complete question is added as an attachment

From the attached image, we have:

Length = 12 - 2x

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Height = x

The volume is calculated as:

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Substitute the known values in the above equation

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This gives

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Read more about polynomial at:

brainly.com/question/4142886

#SPJ1

7 0
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