Answer:
Step-by-step explanation:
2x-x-5
From the astronaut to the horizon is a tangent line to the curvature of the earth. And from that point on the horizon to the center of the earth is at a right angle to the tangent and is equal to the radius of the earth...so we can say
cosα=r/(r+h) where r is the radius of the earth and h is the height above the surface of the earth...
α=arccos(r/(r+h))
now tanα=d/r where d is the distance from the astronaut to the point on the horizon so:
tan(arccos(r/(r+h))=d/r
d=rtan(arccos(r/(r+h))) and using r≈4000 and h=50 we get:
d=4000tan(arccos(4000/(4050)))
d≈634.42mi
d≈634 mi (to nearest mile)
Answer:
9:20
Step-by-step explanation:
Make both the given in same quantity i.e. ml and then you can reduce it to the lowest term and you get the answer to your question.
The answer is B
Because when x=0, y=-4 and when y=0, x=-1. Hope I was able to help
At t=1 minute, the reading will be 40.00 °F.
_____
Every half-minute, the temperature difference from the 30 °F air temperature is divided by 2. After 1 minute, the initial 70-30=40 degree difference will be divided by 4. The thermometer will read 30° +40°/4 = 40°
