9.
\((1)\)函数\(y=f\left(x\right) \)在\(a\leqslant 3\)处的切线方程是\(y=-x+8 \),则\(f\left(5\right)+f{{'}}\left(5\right)= \)__________
\((2)\)一个与球心距离为\(1\)的平面截球所得的圆面面积为\(π\),则球的表面积为________
\((3)\Delta ABC\)中,\(a\)、\(b\)、\(c\)成等差数列,\(∠B=30^{\circ}\),\({S}_{∆ABC}= \dfrac{3}{2} \),那么\(b =\)___________.
\((4)\triangle ABC\)中,\(∠A=\dfrac{\pi }{3}\),\(O\)为平面内一点\(.\)且\(\left| \overrightarrow{OA} \right|=\left| \overrightarrow{OB} \right|=\left| \overrightarrow{OC} \right|\),\(M\)为劣弧\( \overset{\}{BC} \)上一动点,且\(\overrightarrow{OM}={p}\overrightarrow{OB}+q\overrightarrow{OC}.\)则\(p+q\)的取值范围为__.