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3 years ago

10

Solve for x: -3|2x + 61 = -12

1 answer:

saw5 [17]3 years ago

3 0

-3|2x + 6| = -12

-6x - 18 = -12

-6x = 6

x = -1

(sorry if I misunderstood your question)

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Sum and difference tan(135+30)

Mumz [18]

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So,

$\tan(135^\circ+30^\circ)=\dfrac{\tan135^\circ+\tan30^\circ}{1-\tan135^\circ\tan30^\circ}$

You should know that $\tan135^\circ=-1$ and $\tan30^\circ=\dfrac1{\sqrt3}$

Putting everything together,

$\tan(135^\circ+30^\circ)=\dfrac{-1+\dfrac1{\sqrt3}}{1-(-1)\left(\dfrac1{\sqrt3}\right)}=\dfrac{1-\sqrt3}{\sqrt3+1}=\sqrt3-2$

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4 years ago

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4 years ago

Simplify the expression to a polynomial in standard form: (4x+5) (x^2-3x-2) PLEASE HLEP

pickupchik [31]

Answer:

$4x^3-7x^2-23x-10$

Step-by-step explanation:

So we have the expression:

$(4x+5)(x^2-3x-2)$

Distribute. Multiply (4x+5) to each term:

$(x^2)(4x+5)+(-3x)(4x+5)+(-2)(4x+5)$

Distribute:

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Combine like terms:

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Add and simplify:

$=4x^3-7x^2-23x-10$

And this is in descending order, so it's in standard form.

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3 years ago

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Citrus2011 [14]

Answer:

Step-by-step explanation:

The angle sum of a triangle = 180 degrees.

So to find the third angle you would just subtract 23 and 35 from 180.

Third angle = 180 - 23 - 35 = ?

8 0

4 years ago

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nexus9112 [7]

Answer:

All the answers that apply are:

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Step-by-step explanation:

This is because the equation is 50 + 1/2 = 120. Both of the statements are equivalent to the equation.

8 0

3 years ago

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