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faltersainse [42]
3 years ago
6

Solve for x, given the equation VX-5 + 7 = 11.

Mathematics
2 answers:
Alisiya [41]3 years ago
6 0
The answer is 9/v or 9 over v
BARSIC [14]3 years ago
4 0

Answer:

  x = 21

Step-by-step explanation:

We assume your equation is intended to be ...

  √(x -5) +7 = 11

Then the solution looks like ...

  √(x -5) = 4 . . . . . subtract 7

  x -5 = 4² = 16 . . . square both sides

  x = 21 . . . . . . . . . add 5

You might be interested in
W+ 1/2=1/4w + 2 can somebody help me plz
katrin [286]

Answer:

w=2

Step-by-step explanation:

I'm too lazy to explain the first part but here:

3/4w=6/4

w=2

3 0
3 years ago
I need help for part B could you show your work as well? thanks...
Ksivusya [100]
Hello army :,) Here’s the answer:


B)
(3.19 * 10^8)/(8.23 * 10^5) = 3.19/8.23 * 10^8/10^5
= 3.19/8.23 * 10^3 = 0.387606318 * 10^3
= 387.606318

The population of US is 387 times larger than that of Ohio's
8 0
3 years ago
Which strategie would eliminate a variable in the system of equations? −x+6y=8 7x−y=−2 ​
NeX [460]

Answer:

  substitution (or addition)

Step-by-step explanation:

A simple strategy for this system is to use substitution. The first equation is easily solved for x, so you could substitute that into the second equation:

  x = 6y -8

  7(6y -8) -y = -2 . . . . . x variable eliminated

__

The second equation is easily solved for y, so you could substitute that into the first equation.

  y = 7x +2

  -x +6(7x +2) = 8 . . . . . y-variable eliminated

__

The "addition" method is always a good way to eliminate a variable.

When the coefficient of a variable in one equation is a divisor of the coefficient of that variable in the other equation, a simple multiplication and addition will do.

To make the coefficient of x in the first equation the opposite of the coefficient of x in the second, multiply the first equation by 7. Adding that result to the second equation will eliminate x:

   7(-x +6y) +(7x -y) = 7(8) +(-2)

  42y -y = 56 -2 . . . . . . x-variable eliminated

Likewise, the second equation can be multiplied by 6 and added to the first to eliminate the y-variable:

  (-x +6y) +6(7x -y) = (8) +6(-2)

  -x +42x = -4 . . . . . . . . y-variable eliminated

__

It is often the case that using either substitution or "addition" requires about the same amount of work.

Here, the solutions are (x, y) = (-4/41, 54/41).

3 0
3 years ago
What is -5(3times-7+4y)
Mrac [35]

Steps To Solve:

-5(3 * -7 + 4y)

~Solve what's in parenthesis

-5(-21 + 4y)

~Distributive Property

105 - 20y

Hope This Helped! Good Luck!

7 0
3 years ago
Read 2 more answers
Tony operates a skate rental company. He charges an equipment fee of $3 plus $6 per hour. Which equation represents this linear
slava [35]

Answer: A) y = 6x +3

Step-by-step explanation:

Let x represent the number of hours. $6 per hour can now be written as 6x.

Now, we must account for the $3 flat, fee and add it to 6x, getting 6x + 3

6 0
2 years ago
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