Help please for brainiest The value of y varies directly with x. when y = 8.4 , x = 3.5

What is the value of y when x is 7.7?

A) 18.48
B) 12.6
C) 3.82
D) 19.6

9514 1404 393

   A)  18.48

Step-by-step explanation:

X and Y are proportional when there is direct variation. So, we can write the proportion ...

  y/x = 8.4/3.5 = ??/7.7

Multiplying by 7.7, we have ...

  ?? = 7.7(8.4/3.5) = 18.48

The value of y when x = 7.7 is 18.48.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.