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3 years ago

Find the positive value of x if 4 - 2x] = 6.

Mathematics

1 answer:

Alecsey [184]3 years ago

4 0

6-4+2x=0

2+2x=0

-2(-1-x)=0

Step-by-step explanation:

not possible

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Equivalent expression for 6 (x+y+z)=

Leya [2.2K]

Answer:

6x + 6y + 6z

Step-by-step explanation:

Distribute the 6 to each value in the parenthesis.

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3 years ago

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kupik [55]

Answer:

Step-by-step explanation:

If you notice each container has 4 balls

3 = 12

6 = 24

10 = 40

So, this means 1 container = 4 balls

x = 28

Divide by 4

28/ 4 = 7

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3 years ago

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What is x 1/4(8x+12)=21

tatiyna

Answer:

x = 9

Step-by-step explanation:

1/4(8x+12) =21

1/4 * 8x = 2x

1/4 * 12 = 3

2x + 3 = 21

21 - 3 = 18

2x = 18

18/2 = 9

x = 9

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3 years ago

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Len [333]

Answer:

x=18

Step-by-step explanation:

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3 years ago

Solve x2 + 6x + 7 = 0. (2 points)

Alexandra [31]

Option C: $$x=-3 \pm\sqrt{2}$

Solution:

Given equation is $x^{2}+6 x+7=0$ .

This is a quadratic equation.

Here a = 1, b = 6, c = 7

To solve the given equation by quadratic formula,

$$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Substitute the given values in the quadratic formula, we get

$$x=\frac{-6 \pm \sqrt{6^{2}-4 (1) (7)}}{2 (1)}$

$$x=\frac{-6 \pm \sqrt{36-28}}{2 }$

$$x=\frac{-6 \pm \sqrt{8}}{2 }$

$$x=\frac{-6 \pm2 \sqrt{2}}{2 }$

$$x=\frac{2(-3 \pm\sqrt{2})}{2 }$

2 in the numerator and denominator are cancelled.

$$x=-3 \pm\sqrt{2}$

Option C is the correct answer.

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3 years ago