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3 years ago

9

B) 3x+2 = 2x + 13 divided by 3

1 answer:

forsale [732]3 years ago

6 0

X=7/3
solution steps:
subtract 2 from both sides
subtract 2x from both sides

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3x^2 - 4x = -2<br> Solve

amid [387]

Answer:

$x = \bigg \{\frac{ 2 - \sqrt{2} \: i }{3}, \: \: \frac{ 2 + \sqrt{2} \: i }{3} \bigg \}$

Step-by-step explanation:

$3 {x}^{2} - 4x = - 2 \\ 3 {x}^{2} - 4x + 2 = 0 \\ equating \: it \: with \\ a {x}^{2} + bx + c = 0 \\ a = 3 \: \: b = - 4 \: \: c = 2 \\ {b}^{2} - 4ac \\ = {( - 4)}^{2} - 4 \times 3 \times 2 \\ = 16 - 24 \\ = - 8 \\ \ {b}^{2} - 4ac < 0 \\ \therefore \: given \: quadratic \: equation \: have \: \\ imaginary \: solutios. \\ \\ x = \frac{ - b \pm \sqrt{{b}^{2} - 4ac } }{2a} \\ = \frac{ - ( - 4) \pm \sqrt{ - 8} }{2 \times 3} \\ = \frac{ 4 \pm 2\sqrt{2} \: i }{2 \times 3} \\ = \frac{ 2 \pm \sqrt{2} \: i }{3} \\ \therefore \: x = \frac{ 2 - \sqrt{2} \: i }{3} \: or \: x = \frac{ 2 + \sqrt{2} \: i }{3} \: \\ \\ x = \bigg \{\frac{ 2 - \sqrt{2} \: i }{3}, \: \: \frac{ 2 + \sqrt{2} \: i }{3} \bigg \}$

7 0

3 years ago

Combine like terms in the following expression: 4 + 3(1−3m)

zmey [24]

it is impossible to combine like terms. In order to combine like terms you must have like x+x you cant have like 1+x

5 0

3 years ago

Read 2 more answers

5x + 3 = x + 11<br> Please help

taurus [48]

Answer:

2

Step-by-step explanation:

5x + 3 = x + 11

5x - x + 3 = x - x + 11

4x + 3 = 11

4x + 3 - 3 = 11 - 3

4x = 8

4x / 4 = 8/ 4

x = 2

Hope this helps ^-^

4 0

3 years ago

Read 2 more answers

in Marlas school 6/15 of the students do not ride the bus to school. of these students 5/9 walk to school. what fraction of the

Debora [2.8K]

Answer:

The fraction of the students that walk in in Marla's school is equal to $\frac{2}{9}$

Step-by-step explanation:

Let

x------> the total students in Marla's school

we know that

The number of students that not ride the bus is equal to

$\frac{6}{15}x\ students$

The number of students that walk to the school is equal to

$\frac{6}{15}x*\frac{5}{9}=\frac{2}{9}x\ students$

therefore

The fraction of the students that walk in in Marla's school is equal to $\frac{2}{9}$

4 0

3 years ago

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MULTIPLE CHOICE!!! HELPPPP!! <br><br> PRE CALC!!!!

polet [3.4K]

Answer:

To be sure, the result for the equation is approximately: 30,891.0807

Step-by-step explanation:

The calculation for the equation:

$\sum_{k=0}^{19} 6 (1.5)^{k} \approx 39,891.0807$

6 0

3 years ago