6. The range of the data \( 4,8,2,1,5 \) and 12 s \( \begin{array}{ll}\text { A) } 5 \\ \text { C) } 9 \\ \text { 7. Median of } 12,15,9,7,10,16 \text { and } 4 \text { is } & \text { D) } 11 \\ \text { A) } 9 & \text { B) } 10\end{array} \)

You are dealt one card from a standard 52 -card deck. Find the probability of being dealt a ten. The probability of being dealt a ten is (Type an integer or a simplified fraction.)

Matriz de tronsición \( B=\{(2,5),(1,2)\} \quad B^{\prime}=\{(2,1),(-9,2)\} \)

What is \( m \angle 4 \) ? \( m \angle 4=\square^{\circ} \)

The maximum force exerted onto a 51.2 k chair at rest is 316 N due to static friction. What is the coefficient of static friction?

Realiza las siguientes multiplicaciones entre polinomios 1. \( (a-b)(a+b) \) 2. \( \left(a+2 a b+5 b^{2}\right)(2 a+3) \) 3. \( (x-y)\left(x^{2}+x y+y^{2}\right) \) 4. \( (2 x+3 z)(2 x-3 z) \) 5. \( \left(x^{3}-y^{3}\right)\left(x^{3}+y^{3}\right) \) 6. \( (x-y)^{2} \) 7. \( (a+b)^{3} \) 8. \( \left(3 x^{2}+\frac{1}{2} x-8\right)\left(-\frac{4}{3} x-\frac{2}{9}\right) \) 9. \( \left(\frac{2}{7} x^{6} y^{4} z^{2}+3 x y z\right)\left(\frac{5}{11} x y z-3 x^{6} y^{4} z^{2}\right. \)