3 years ago

Translate the sentence: “Twice x is 5” to an equation.

Mathematics

1 answer:

skad [1K]3 years ago

8 0

X = 2.5 would be your answer. Hope this helps!

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Will reward brainliest!

Lina20 [59]

Option D: Two irrational solutions

Explanation:

The equation is $17+3 x^{2}=6 x$

Subtracting 6x from both sides, we have,

$3x^{2} -6x+17=0$

Solving the equation using quadratic formula,

$x=\frac{6 \pm \sqrt{36-4(3)(17)}}{2(3)}$

Simplifying the expression, we get,

$\begin{aligned}x &=\frac{6 \pm \sqrt{36-204}}{6} \\&=\frac{6 \pm \sqrt{-168}}{6} \\&=\frac{6 \pm 2 i \sqrt{42}}{6}\end{aligned}$

Taking out the common terms and simplifying, we have,

$\begin{aligned}x &=\frac{2(3 \pm i \sqrt{42})}{6} \\&=\frac{(3 \pm i \sqrt{42})}{3}\end{aligned}$

Dividing by 3, we get,

$x=1+i \sqrt{\frac{14}{3}}, x=1-i \sqrt{\frac{14}{3}}$

Hence, the equation has two irrational solutions.

8 0

3 years ago

-13x - 8 = 5 - 8x -3

kramer

Answer:

x = -2

Step-by-step explanation:

$-13x - 8 = 5 - 8x - 3 \\\\-13x + 8x = 5 - 3 + 8 \\\\-5x = 10 \\\\x = \frac{-10}{5} = -2$

3 0

4 years ago

4 granola bars are shared equally between 8 people. What fraction of a granola bar does each person receive?

andreyandreev [35.5K]

Answer:

1/2

Step-by-step explanation:

4 divided by 8 equals 1/2

4 0

4 years ago

Read 2 more answers

Solve for x. <br> 7x - 3 = 4x - 9

artcher [175]

Answer:

x= -2

Step-by-step explanation:

7x-3=4x-9

3x-3= -9

3x= -6

x= -2

7 0

3 years ago

Read 2 more answers

Can u help me plz and say how u done it :)

puteri [66]

Answer:

3(2x+7)

=21x+21

this is the answer hope you like it

5 0

3 years ago