Number graph ranging from negative eight to eight on the x axis and negative eight to eight on the y axis. two lines that are perpendicular to each other intersect at (three, zero). the line with a positive slope is labeled a and the line with a negative slope is labeled b. use the graph to state the solution for the system. x – y = 3 (line a) x + y = 3 (line b) a. (0, 3) b. (–3, 0) c. (0, –3) d. (3, 0)

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step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh

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answer: 1.06 km per sec

step-by-step explanation:

39.6 m=63.72 km

60 min in an hour so 63.72/60=1.06