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Sveta_85 [38]
3 years ago
14

y is inversely proportional to the cube of x. It is given that for a certain value of x, the value of y is 7. Find the new value

of y when x is doubled.​
Mathematics
2 answers:
GenaCL600 [577]3 years ago
7 0

Inversely proportional means as one variable increases the other variable decreases.

In this problem, x is doubled which means it's increased, therefore, y is decreased.

7 / 2 = 3.5

The new value of y is 3.5

marta [7]3 years ago
4 0
The value of y is 3.5
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Anuta_ua [19.1K]
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3 0
3 years ago
Given the equation -5x+2y=-10 what is the equation of the line perpendicular to the line?
meriva

Answer:

The equation of the perpendicular line would be y = -2/5x - 1

Step-by-step explanation:

In order to find this line, we must first find the slope of the original line. We do this by solving for y.

-5x + 2y = -10

2y = 5x - 10

y = 5/2x - 5

This shows us a slope of 5/2. TO find the perpendicular slope, we use the opposite and reciprocal. This means we negative 5/2 to get -5/2 and then we flip it to get -2/5. Now that we have this, we can use the slope and the point in point-slope form to get the equation.

y - y1 = m(x - x1)

y - 1 = -2/5(x + 5)

y - 1 = -2/5x - 2

y = -2/5x - 1

4 0
3 years ago
PLZ ANSWER QUESTION IN PICTURE
viktelen [127]

Answer:

X-int = -5 and y-int = 6

Step-by-step explanation:

1.2x+6 = 0

1.2x= -6

X = -6/1.2

X = -5

3 0
3 years ago
when directed to solve a quadratic equation by completing the square, Sam arrived at the equation (x-(5/2))^2= (13/4). which equ
Tasya [4]
We have the following expression:
 (x- (5/2)) ^ 2 = (13/4)
 Let's rewrite the given expression:
 x ^ 2 - 5x + 25/4 = (13/4)
 x ^ 2 - 5x + 25/4 - 13/4 = 0
 x ^ 2 - 5x + 12/4 = 0
 x ^ 2 - 5x + 3 = 0
 Answer:
 
the original equation given to Sam could have been:
 
x ^ 2 - 5x + 3 = 0
7 0
3 years ago
Help please! I need this question done super fast.
vekshin1

Answer: The answer is yes because figure B is figure A divided by 2

5 0
4 years ago
Read 2 more answers
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