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3 years ago

-6(x - 2) + 5 = 4 - (x+2) Find x

Mathematics

2 answers:

Shkiper50 [21]3 years ago

8 0

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

x = 3

wel3 years ago

6 0

Answer:

x = 30

Step-by-step explanation:

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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

4 years ago

Idahtonye has ₦50.00. He buys six mangoes and gets ₦2 change. Find the average cost of one mango. step by step explanation.

arsen [322]

Answer:

The average cost of one mango = c = ₦8

Step-by-step explanation:

Let 'c' be the average cost of one mango

The original amount Idahtonye has = ₦50.00

The amount of mangoes Idahtonye buys = 6 mangoes

As he gets back the change of ₦2 after paying ₦50.00 to buy 5 mangoes.

Thus the equation becomes

50 - 2 = 6c

48 = 6c

dividing both sides by 6

48/6 = 6c/6

c = 8 ₦

Therefore, the average cost of one mango = c = ₦8

8 0

3 years ago

two-eighths of the students are boys. If there are 13 boys in the class, how many students are there in all?

EleoNora [17]

Answer:

52 students

Step-by-step explanation:

1/8 is 6.5

6.5 times 8 is 52

7 0

4 years ago

Read 2 more answers

What are the solutions to 2x^2-4x-30=0

oksano4ka [1.4K]

Answer:

ill try 2x2-4x-30=0

Two solutions were found :

x = 5

x = -3

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(2x2 - 4x) - 30 = 0

5 0

3 years ago

What is the equivalent expression to 5x + 20

REY [17]

Answer:

Step-by-step explanation: no need to thank me even if im wrong

4 0

3 years ago

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