Answer:
5
Step-by-step explanation:
We want to separate the variable r from the constants.
Let's add (1/5)r to both sides: . We now have the simplified equation:
. Now, we subtract 1 from both sides:
.
Let's turn the mixed number into an improper fraction by making 2 into 10/5 and adding that to 1/5: (10/5) + (1/5) = 11/5. So, we now have: .
To solve for r, we divide both sides by 11/5, which is the same as multiplying by its reciprocal, 5/11:
Thus, r = 5.
Hope this helps!
Answer:
First option and Fourth option.
Step-by-step explanation:
To solve this exercise you need to use the following Trigonometric Identity:
In this case you know that:
Since triangle ABC is similar to triangle DEF:
Let's begin with the triangle ABC.
You can identify that:
Then, substituing values, you get:
In triangle DEF, you know that:
So, substituing values, you get: