Question

Which value could be the y-coordinate for point Q? O 2/5 O 4/2 O 2/13 O 8/2

Answer 1

Answer:

2 rt5

Step-by-step explanation:

equation of circle

x^2 + y^2 = r^2

4^2 + y^2 = 6^2

16 + y^2 = 36

y^2 = 20

y = sqrt of 20

y = 2 rt5

Answer 2

Answer:

It is 2√5

Step-by-step explanation:

${ \bf{ {(x - a) + {(y - b)}^{2} = {r}^{2} } }} \\ { \tt{ {(4 - 0)}^{2} + {(y - 0)}^{2} = {6}^{2} }} \\ { \tt{16 + {y}^{2} = 36}} \\ { \tt{ {y}^{2} = 20 }} \\ { \tt{ {y} = \sqrt{5 \times 4} }} \\ { \tt{y = 2 \sqrt{5} }}$