Question

Find the value of y. Round to the nearest tenth

Answer 1

Hello!

The answer is:

The first option,

`y=3.5`

Why?

To solve the problem, we need to follow the next steps:

- Set your calculator in degree mode to calculate Cos(64°)

- Isolate Y by multiplying each side of the equation by 8.

Solving we have:

`Cos(64\°)=(y)/(8)\\\\0.44=(y)/(8)`

Multiplying each side of the equation by 8, we have:

`(0.44)*8=(y)/(8)*8\\3.52=y`

`y=3.52`

Rounding to the nearest tenth, we have:

`y=3.5`

Hence, the answer is the first option,

`y=3.5`

Have a nice day!