8-10=-2
-2+5=3
3+7=10
10-(-20)=-10
Final score is -10 points
Answer:

Step-by-step explanation:


Hope it helps you!!
#IndianMurga(. ❛ ᴗ ❛.)
Answer:
The distance between the astronomers and the moon was
meters.
Step-by-step explanation:
We have that the speed is the distance divided by the time, so:

In this problem, we have that:
The reflected laser beam was observed by the astronomers 2.52 s after the laser pulse was sent. This means that
.
If the speed of light is 3.00 times 10^8 m/s, what was the distance between the astronomers and the moon?
We have that
m/s.
We have to find d. So:



![7.56*10^{8]](https://tex.z-dn.net/?f=7.56%2A10%5E%7B8%5D)
The distance between the astronomers and the moon was
meters.
Answer:
B
Step-by-step explanation:
To solve this, do 8 division 6, the answer should be 1.3333...
if you convert that to a fraction, it should be 1 1/3