Ns if it is not. 2. all objects that cover or protect the hea 2. A collection of Disney characters. 3. a group of beautiful students 4. days in a week 5. a collection of small plants

3. \( \left\{\begin{array}{l}6 r-5 t=-11 \\ 7 t-8 r=15\end{array}\right. \)

Get a similar question You can retry this question below Radon-222 decays at a continuous rate of \( 17.3 \% \) per day. How much will 110 mg of Radon-222 decay to in 10 days? NOTE: Round your answer to 4 decimal places. Question Help: \( \square \) Video Message instructor Submit Question

Koji broj treba dodati izrazu \( 3 \sqrt{48}-\sqrt{27}-8 \sqrt{3} \) da bi rezultat bio \( 7 \sqrt{3} \) ?

Solve the system of equations by the addition method. \( \left\{\begin{array}{c}5 x+5 y=55 \\ -2 x-3 y=-29\end{array}\right. \) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution is \( \square \). (Simplify your answer. Type an ordered pair.) B. There are infinitely many solutions; \( \{(x, y) \mid 5 x+5 y=55\} \) or \( \{(x, y) \mid-2 x-3 y=-29\} \). C. There is no solution; \( \} \) or \( \varnothing \).

What is the angle in radians between the vectors \( \mathbf{a}=\langle 4,6,-5\rangle \) and \( \mathbf{b}=\langle-2,-4,2\rangle \) ? Angle: Submit answer Next item