What is the answer for -7+x/3=-13

Mathematics

2 answers:

Law Incorporation [45]3 years ago

8 0

Answer:

x = - 18

Step-by-step explanation:

Given

- 7 + $\frac{x}{3}$ = - 13 ( add 7 to both sides )

$\frac{x}{3}$ = - 6 ( multiply both sides by 3 to clear the fraction )

x = - 18

Zarrin [17]3 years ago

3 0

Answer:

x = -32 or x = -18 Depends on how the equation is written

Step-by-step explanation:

-7 + x/3 = -13

Find the answer by solving for x.

If the equation is written like this:

$\frac{-7+x}{3} = -13$ Multiply both sides by 3 and add 7 to both sides

x = -32

Or if the equation is written like this:

$-7+\frac{x}{3} =-13$ Add 7 to both sides and then multiply by 3

x = -18

You might be interested in

Implicit differentiation of 1/x +1/y=5 y(4)= 4/19<br> y'(4)=?

Aneli [31]

$\frac{1}{x} +\frac{1}{y} = 5\\\\x^{-1}+y^{-1}=5\\$

Above, I changed the fraction form of x and y into exponential form so it is easier to see the differentiation. Now, we can differentiate:

$-1x^{-2}+-1y^{-2}\frac{dy}{dx}=5\\\\\frac{-1}{x^2}-\frac{1}{y^2}\frac{dy}{dx}=5\\\\-\frac{1}{y^2}\frac{dy}{dx}=5+\frac{1}{x^2}\\\\\frac{dy}{dx}=-5y^2-\frac{y^2}{x^2}$

Now that we have dy/dx, we can plug in the x, which is 4, and the y, which is 4/19. We know these values of x and y because your question stated y(4) = 4/19.

$\frac{dy}{dx}=-5(\frac{4}{19})^2-\frac{(\frac{4}{19})^2}{(4)^2}\\\\\frac{dy}{dx}=-5(\frac{16}{361})-\frac{(\frac{16}{361})}{16}\\\\\frac{dy}{dx}=\frac{-80}{361}-\frac{1}{361}\\\\\frac{dy}{dx}=\frac{-81}{361}$

5 0

3 years ago

B. Is 48 a multiple of 8?

maria [59]

Yes it is a factor of 8

5 0

3 years ago

Read 2 more answers

Does any one know the answer to this thank you

makvit [3.9K]

Answer:

The First choice