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3 years ago

If y varies directly with x and y = -15 when x = 3, find x when y = 10.

Mathematics

1 answer:

Anika [276]3 years ago

4 0

Answer:

like here x= 3 and y= -15

here, its 5 times goes in negative

now if y = 10 TO X IS 5 TIME POSITIVE HERE = 10×5 = 50

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How did World War II impact Louisiana's economy?

sladkih [1.3K]

Answer:

Step-by-step explanation:

I took the K12 test and the answer is A.

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3 years ago

Write the equation of the line perpendicular to y = 5/3x + 1 that passes through the point (- 8, 2)

xenn [34]

Answer:

y = - $\frac{3}{5}$ x - $\frac{14}{5}$

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{5}{3}$ x + 1 ← is in slope- intercept form

with slope m = $\frac{5}{3}$

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{\frac{5}{3} }$ = - $\frac{3}{5}$ , thus

y = - $\frac{3}{5}$ x + c ← is the partial equation

To find c substitute (- 8, 2) into the partial equation

2 = $\frac{24}{5}$ + c ⇒ c = 2 - $\frac{24}{5}$ = - $\frac{14}{5}$

y = - $\frac{3}{5}$ x - $\frac{14}{5}$ ← equation of perpendicular line

4 0

3 years ago

Mrs. Ralph decides to rent a movie theatre for her students to celebrate the end of the trimester. The rental rate is $250 for t

timurjin [86]

5 and a half hours.

600-250 for the first two hours and it leaves her 350 for additional hours. divide 350 by 50 and you get 7. so she can get 7 extra half hours which is 3.5 hours.

so 2+3.5 is 5.5

5 0

3 years ago

Solve for Y 3y =2(4-2y)+6

Nat2105 [25]

Answer:

HOLA MATE HERE IS UR ANSWER:-

Step-by-step explanation:

3y=2(4-2y)+6
3y=8-4y+6
3y=14-4y
3y+4y=14
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y=2

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2 years ago

Integral of 1/(x^2-x+1)

Lunna [17]

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$\\ \sf\longmapsto \displaystyle{\int}\dfrac{1}{x^2-x+1}$

$\\ \sf\longmapsto \displaystyle{\int}x^{-2}-x^{-1}+1$

$\\ \sf\longmapsto \displaystyle{\int}x^{-2}-\displaystyle{\int}x^{-1}+\displaystyle{\int}1$

$\\ \sf\longmapsto \dfrac{x^{-2+1}}{-2+1}-\dfrac{x^{-1+1}}{-1+1}+1$

$\\ \sf\longmapsto \dfrac{x^{-1}}{-1}-\dfrac{x^0}{0}+1$

$\\ \sf\longmapsto -\dfrac{1}{x}-\dfrac{1}{0}+1$

$\\ \sf\longmapsto -\dfrac{1}{x}-\infty+1$

$\\ \sf\longmapsto \infty$

6 0

3 years ago