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3 years ago

Which expression is equivalent to 3x + 10 -x + 12

Mathematics

1 answer:

rosijanka [135]3 years ago

6 0

Answer: 2x+22

Step-by-step explanation:

Subtract 3-2 and add 10+12 and get 2x+22

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HELP ME ANSWER THIS PLEASE

Artemon [7]

Answer:

3x + 3

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Solve for x (1/x) -2/3 = (4x)

Vadim26 [7]

The value of x is $x=\frac{-1+\sqrt{37}}{12}$ and $x=\frac{-1-\sqrt{37}}{12}$

Step-by-step explanation:

The equation is $\frac{1}{x}-\frac{2}{3}=4 x$

Subtracting by $4x$ on both sides,

$\frac{1}{x}-\frac{2}{3}-4 x=0$

Taking LCM,

$\frac{3-12 x^{2}-2 x}{3 x}=0$

Multiplying by 3x on both sides,

$-12 x^{2}-2 x+3=0$

Dividing by (-) on both sides,

$12 x^{2}+2 x-3=0$

Using quadratic formula, we can solve for x.

$\begin{aligned}x &=\frac{-2 \pm \sqrt{2^{2}-4 \cdot 12 \cdot(-3)}}{2 \cdot 12} \\&=\frac{-2 \pm \sqrt{4+144}}{2 \cdot 144} \\&=\frac{-2 \pm \sqrt{148}}{24} \\&=\frac{-2 \pm 2 \sqrt{37}}{24}\end{aligned}$

Taking out common term 2, we get,

$\begin{array}{l}{x=\frac{-2(1 \pm \sqrt{37})}{24}} \\{x=\frac{-1 \pm \sqrt{37}}{12}}\end{array}$

Thus, the value of x is $x=\frac{-1+\sqrt{37}}{12}$ and $x=\frac{-1-\sqrt{37}}{12}$

4 0

3 years ago

Solve 5-2x<7 x<-1 x>-1 x<-12 X>-12

Alex

$5-2x$

5 0

2 years ago

Which of the following is a complex number? -7 2 + StartRoot 3 EndRoot 4 + 9i Pi

zepelin [54]

Second to last one is my guess

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3 years ago

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Please help 30 points!!!!!!! Convert 45.25 mL into ft3.

Lorico [155]

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3 years ago