09. Las medidas de los ángulos de un triángulo son proporcionales a los números \( 2 ; 3 \) y 4 . La medida del mayor ángulo es: \( \begin{array}{lllll}\text { A) } 30 & \text { B) } 80 & \text { C) } 70 & \text { E) } 20 & \text { E) } 10\end{array} \)

2157 En elektron väger \( 9,1 \cdot 10^{-31} \mathrm{~kg} \). En proton väger 1900 gånger mer Vad väger en proton?

The shorter leg of a right triangle is 6 inches shorter than the longer leg. The hypotenuse is 6 inches longer than the longer leg. Find the side lengths of the triangle. Length of the shorter leg: Length of the longer leg:

Example 1 Cassidy still can't live without her coffee form Starbucks each day. With tax, her coffee costs her \( \$ 6 \). She believes that she doesn't spend that much on her coffee fix because it's only \( \$ 6 \). How much does Cassidy spend on coffee for the year? Assuming Cassidy also pays \( \$ 900 \) per month on rent, complete the sentence: On an annual basis, the first expense is _ \( \% \) of the second expense.

Solve: \( 48=-4(7 x+11) \)

2.2 Use an additional Fractional approach to calculate: \( \mathbf{0 . 6 6}+\mathbf{1 3 . 9 1 :} \)