junior football should be etween 58 and 60 cm ircumference. What can be the naximum diameter? Use \( \pi=3.14 \). \[ 9.55 \] 18.47 19.11

Given \( \mathbf{v}=-9 \mathbf{i} \) and \( \mathbf{w}=-\mathbf{j} \) (a) find the dot product \( \mathbf{v} \cdot \mathbf{w} \) (b) find the angle between \( \mathbf{v} \) and \( \mathbf{w} \); (c) state whether the vectors are parallel, orthogonal, or neither.

Given \( \mathbf{v}=-\mathbf{i}+\mathbf{j} \) and \( \mathbf{w}=\mathbf{i}+\mathbf{j} \) (a) find the dot product \( \mathbf{v} \cdot \mathbf{w} \); (b) find the angle between \( \mathbf{v} \) and \( \mathbf{w} \); (c) state whether the vectors are parallel, orthogonal, or neither. (a) \( \mathbf{v} \cdot \mathbf{w}=\square \)

Find the center and radius of the circle represented by the equation below. \[ (x-4)^{2}+(y+9)^{2}=289 \] Answer Attempt 1 out of 5 Center: Radius:

Use the given vectors to find \( \mathbf{v} \cdot \mathbf{w} \) and \( \mathbf{v} \cdot \mathbf{v} \). \[ \begin{array}{l}\mathbf{v}=-7 \mathbf{i}-3 \mathbf{j}, \mathbf{w}=-9 \mathbf{i}-5 \mathbf{j} \\ \mathbf{v} \cdot \mathbf{w}=78 \text { (Simplify your answer.) } \\ \mathbf{v} \cdot \mathbf{v}=\square \text { (Simplify your answer.) }\end{array} \text { \$ } \]

Find the center and radius of the circle represented by the equation below. \[ (x-4)^{2}+(y-8)^{2}=25 \] Answer Attempt 1 out of 5 Center: \( (\square, \square \) Radius: