The variables y and x have a proportional relationship, and y = 5 when x = 4.

Mathematics

1 answer:

Tema [17]2 years ago

8 0

Given is -

The variables y and x have a proportional relationship, and y = 5 when x = 4.

$\frac{y}{x}=\frac{5}{4}$

As we have to find the value of x when y= 8 so putting y = 8 in the above relationship, we get :

$\frac{8}{x}=\frac{5}{4}$

$5x=32$

$x=6.4$

Hence, the answer is 6.4

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mr_godi [17]

Plug the points into the equation.
Ex. y=3x-5
(X,y)
1. (5,10): 10=3(5)-5
15-5=10; point 1 is valid
-1=3(-2)-5
-1=-6-5
-1 does not equal -11
Point 2 is not valid
Same process for letter B

8 0

2 years ago

Help please and thank you

kramer

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By the Pythagorean theorem:

y = √(9² + (√27)²) = √(81+27) = √108 = 6√3 ← answer

3 0

2 years ago

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asambeis [7]

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