Answer:
value of x is, [tex]\frac{4}{5}[/tex]
Step-by-step explanation:
Proportional relationship states that a relationship is one in which two quantities vary directly with each other.
We say the variable y varies directly as x i.e, [tex]y \propto x[/tex]
then the equation is of the form: y = kx ......[1] ;where k is the constant of proportionality.
Given y = 15 when x = 3
then by definition of proportional relationship we have;
y = kx
Substitute the value of x and y to solve for k;
15 = 3k
Divide both sides by 3 we get;
[tex]\frac{15}{3} = \frac{3k}{3}[/tex]
Simplify:
k = 5
To find the value of x when y = 4;
Substitute the value of y =4 and k = 5 in [1] to solve for x;
4 = 5x
Divide both sides by 5 we get;
[tex]\frac{4}{5} = \frac{5x}{5}[/tex]
Simplify:
x = [tex]\frac{4}{5}[/tex]
therefore, value of x is; [tex]\frac{4}{5}[/tex]
Answer:
x = 0.8
Step-by-step explanation:
I have a picture
Which I hope it helps
Have a Blessed day
