A server has 44 coneflowers and 32 violets. Four of the coneflowers thrown away because they are wilted. The server divides the rest of flowers equally into 8 centerpieces. How many flowers are in each centerpiece?

4).- Se denomina formulas de derivacion. \( \begin{array}{lll}\text { a), Integral Indefinida Inmediata } & \text { b), Integral Trigonometrica } & \text { e), Integral Expone }\end{array} \)

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. \( \left(\frac{2}{7} x^{6} y^{4} z^{2}+3 x y z\right)\left(\frac{5}{11} x y z-3 x^{6} y^{4} z^{2}\right. \)

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

Find the missing side of the triangle. The perimeter of the triangle is \( 12 x^{2}-7 x+1 \). \( 4 x^{2}-2 x+1 \) \( 8.4 x^{2}+x+21 \)

3. Air is being pumped into a spherical balloon so that its volume is increasing at a rate of \( 200 \mathrm{~cm}^{3} / \mathrm{s} \), how fast it the radius of the balloon increasing when the diameter is \( 60 \mathrm{~cm}(1 \mathrm{D}=2 \mathrm{r}) \) Hint: \( \mathrm{V}=\frac{4}{3} \pi r^{3} \) Answer: \( \underline{\mathrm{dr}} / \underline{\mathrm{dt}}=0.02 \mathrm{~cm} / \mathrm{s} \)