A beam of light (travelling at the speed of light) would take 65 years to go and 65 years to come back from aldebaran, i.e. 130 years. You can send and receive a radio message (travelling at the speed of light, being electromagnetic radiation) taking so 130 years.
Answer:
2.54 miles/hr
2.04 miles/hr
Step-by-step explanation:
<u>Given: </u> Distance between the two towns = 1100 miles
Difference between speeds = miles/hr
Total time when they meet = 240 hours
<u>To find:</u>
Let distance traveled by first group = miles.
Now, the distance traveled by second group = (1100-) miles/hr
The relation between Speed, Time and Distance is given as:
Let speed of first group =
Let speed of second group =
As per question, = +
Now,
Putting value of :
Similarly, putting value of in :
Answer:
a=-79/2=-391/2=-39.5
Step-by-step explanation:
a+45=11/2 subtract 45 from both sides
a=11/2-45 convert 45 to fraction 90/2
a=11-90/2 subtract 90 from 11 to get -79
The answer is choice A. AA
AA = angle angle
The AA similarity theorem is where you look for 2 pairs of congruent angles of two triangles. If you are able to find 2 pairs of those angles, then you've proven the triangles to be similar. In this case, we have a pair of 44 degree angles (angle K, angle Q) and we also have a pair of 90 degree angles because they are right triangles. So this is enough to prove that triangle PQR is similar to triangle JKL