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3 years ago

11

Simplify the expression 2x+2x(x−3x)+7

1 answer:

azamat3 years ago

3 0

2x + 2x^2 -6x^2 + 7

answer is

-4x^2 + 2x + 7

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What is the solution set to the inequality

creativ13 [48]

$(4x - 3)(2x - 1) \geqslant 0 \\ \Leftrightarrow \begin{cases}4x - 3 \geqslant 0 \\ 2x - 1 \geqslant 0\end{cases}\: \vee \:\begin{cases}4x - 3 \leqslant 0 \\2x - 1 \leqslant 0 \end{cases} \\ \Leftrightarrow \begin{cases}x \geqslant \frac{3}{4} \\ x \geqslant \frac{1}{2} \end{cases}\: \vee \:\begin{cases}x\leqslant \frac{3}{4} \\x \leqslant \frac{1}{2} \end{cases} \\ \Leftrightarrow x \geqslant \frac{3}{4} \: \vee \: x \leqslant \frac{1}{2} \\ \Rightarrow The\: third\: option$

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2 years ago

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Fill the blank with <,>or = -25.5___-20.5

tangare [24]

<h3>-25.5 < -20.5</h3>

Step-by-step explanation:

<h3>Hope it helps you !!!</h3>

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1 year ago

√−100 = ___ +_____i<br> ...

Natalija [7]

Answer:

Step-by-step explanation:

Rewrite this as

$\sqrt{(-1)(100)}$

Knowing that i-squared = -1:

$\sqrt{(i^2)(100)}$

Both i-squared and 100 are perfect squares, so this simplifies to

±10i

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2 years ago

What is the measure of X? <br> angles are not necessarily drawn to scale

Schach [20]

Answer:

xº=71º

Step-by-step explanation:

Take the triangle BDH

Once the sum of interior angles of a triangle is 180º:

40º+31º+yº=180º

71º+yº=180º

yº=109º

Once yº and xº are supplementary angles (add up to 180º):

yº+xº=180º

109º+xº=180º

xº=71º

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2 years ago

Need help with math homework, anyone know the answers/how to do these?

mel-nik [20]

These are the answers lol can I get brainliest

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2 years ago