There is two answers D and B
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Answer:
y-coordinate of midpoint of line segment joining the endpoints (0,0) and (0,15) is 7.5
Step-by-step explanation:
Given two end points of line segment that are (0,0) and (0,15). If we have to find the y-coordinate of midpoint of a vertical line segment then we apply mid point formula.
The Midpoint formula is used when one is need to find the exact center point between two given points.
The mid point M of line segment
and
can be calculated as
Mid point of line joining the end points (0,0) and (0,15) is
=M(0,7.5)
Hence, y-coordinate of midpoint of line segment joining the endpoints (0,0) and (0,15) is 7.5
Answer:
distance of diver 1 from the shark ≈ 18.88 m
Step-by-step explanation:
The illustration forms a triangle. The base of the triangle which is their distance apart is given as 30 m . The known angle of the triangle are 52° and 39°. To find the unknown side we subtract the sum of 52° and 39° from 180°. Note that the total angle in a triangle is 180°.
Therefore,
180 - (52 + 39) = 180 - 91 = 89
°. Now the three angle of the triangles are 52°, 39° and 89°.
Using the law of sine we can find the distance of the diver 1 from the shark.
let a = distance of the first diver to the shark.
a/sin 39° = 30/sin 89°
cross multiply
a sin 89° = 30 sin 39°
divide both sides by sin 89°
a = 30 sin 39°/sin 89°
a = 30 × 0.62932039105
/sin 89°
a = 18.8796117315
/0.99984769515
a = 18.8824876258
a ≈ 18.88 m