3 years ago

8x-2=-9+7x Can someone help me?

Mathematics

2 answers:

katovenus [111]3 years ago

5 0

Answer:

x = -7

Step-by-step explanation:

Start with your given equation.

8x - 2 = -9 + 7x

Next, subtract 7x from both sides of the equation and add like terms.

x - 2 = -9

Finally, add 2 to both sides of the equation and add like terms.

x = -7

viktelen [127]3 years ago

4 0

Answer:

Step-by-step explanation:

x = -7

account :

8x-2=-9+7x

8x-7x=-9+2

X=-7

You might be interested in

Given f(x)=-2x-1, solve for x when f(x)=-7

Svetlanka [38]

Answer:

The answer is -15.

Step-by-step explanation:

1. 2x - 1

2. 2(-7) - 1

3. (-14) - 1

4. -15

By plugging in our x value, we are able to use PEMDAS to multiply 2 and the value of x and then, we subtract 1 from the value we got from step 3 to get -15.

5 0

3 years ago

Okay, so I'm a little bit upset at the moment. This morning I decided to make a brainly plus account with the yearly subscriptio

Nostrana [21]

Step-by-step explanation:

Wow that's sad sir..

Hope it gets better ;-;

8 0

3 years ago

Q16. Find x^2 + 1/x^2 , if x + 1/x = 3

erica [24]

Answer:

$2 \times x \times \frac{1}{x} = 2 \\ {x}^{2} + {y }^{2} + 2xy = {(x + y)}^{2} \\ {x}^{2} + \frac{1}{ {x}^{2} } + 2 = {(x + \frac{1}{x} })^{2} = {3}^{2} = 9$

8 0

3 years ago

Mathematics with applications in the management, Natural, and Social Sciences Twelfth edition

Fiesta28 [93]

Answer: 2014

Step-by-step explanation:

LED: -25x + 6y = 20

CFL: 15x + 2y = 322

we need to find which year it was the same to know where LED lighting surpassed CFL lighting

-25x + 6y = 20

15x + 2y = 322 (-3)

-25x + 6y = 20

-70x = -946

x = 13.51

The nearest year would be 14 which is 2014

8 0

3 years ago

A computed measure of how much scores vary around the mean score

Paladinen [302]

That's called <span>standard deviation.

Hope this helps !

Photon</span>

5 0

3 years ago