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Brut [27]
2 years ago
15

2(x + 2) – 4x = 12 Solve for x in the equation below.

Mathematics
2 answers:
Phoenix [80]2 years ago
7 0

Hello :D

Answer:

<u><em>X=-4</em></u>

<u><em>The answer should have a negative sign.</em></u>

Step-by-step explanation:

Distributive property

   ↓

A(B+C)=AB+AC

Expand the form.

2(x-2)-4x=-2x+4

-2x+4=12

Then, you subtract by 4 both sides of an equation.

-2x+4-4=12-4

Subtract the numbers from left to right.

12-4=8

-2x=8

Divide by -2 both sides of an equation.

\frac{-2x}{-2}=\frac{8}{-2}

Finally, you divide by the numbers from left to right to find the answer.

8\div-2=-4

X=-4 is the correct answer.

Hope this helps you!

Have a wonderful day! :D

Illusion [34]2 years ago
4 0

Answer:

x = -4

Step-by-step explanation:

Distribute 2 inside the parentheses

2\times x = 2x\\ 2\times2=4\\ 2x+4 - 4

Combine like terms

-4x + 2x = -2x + 4 = 12

Subtract 4 from both sides

-2x = 8

x = -4

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Is the expression 70 – (4 • 15) a difference of three terms, a product of two terms, or a difference of two terms?
lara31 [8.8K]

Answer: A difference of 2 terms, and the answer is 10.

Step-by-step explanation:

6 0
3 years ago
There are 6 animals in the pen some are quails and some are goats if there are 20 legs in all how many quails and how many goats
yawa3891 [41]

Answer:

4 goats

Step-by-step explanation:

Let us represent

Number of quails = x

Number of goats = y

Quails have 2 legs

Goats have 4 legs

Hence:

There are 6 animals in the pen some are quails and some are goats

x + y = 6...... Equation 1

x = 6 - y

if there are 20 legs in all how many quails

2x + 4y = 20..... Equation 2

We substitute 6 - y for x in Equation 2

2(6 - y) + 4y = 20

12 - 2y + 4y = 20

Collect like terms

- 2y + 4y = 20 - 12

2y = 8

y = 8/2

y = 4 goats

The number of goats there are 4 goats

8 0
3 years ago
Can anyone help with 1-10
Alex787 [66]

Answer:

1. E

2. A

3. B

4. AB

5. E

6. D

7. BC

8. CD

9. A

10. C

Step-by-step explanation:

6 0
2 years ago
Identify a pair of supplementary angles in the figure. answers : 2 and 4 1 and 6 1 and 5 5 and 6
Nuetrik [128]

Answer:

2 and 4

Step-by-step explanation:

This is the only one where the two angles add up to 180 degrees, aka, a straight line.

6 0
3 years ago
A ladder is leaning against a
vlada-n [284]

Answer:

The angle of elevation is 36.87 degrees

Step-by-step explanation:

see the attached figure to better understand the problem

In the right triangle ABC of the figure

cos(\theta)=\frac{AC}{BC} ----> by CAH (adjacent side divided by the hypotenuse)

substitute the given values

cos(\theta)=\frac{12}{15}

\theta=cos^{-1}(\frac{12}{15})=36.87^o

4 0
2 years ago
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