Answer:
B.
Step-by-step explanation:
B. The girl would have to use less force because she is using a simple machine, or a lever. The lever makes it easier to lift the rock because the rock is closer to the fulcrum.
Answer: x=0
Step-by-step explanation:
4x-3x = 0
You can use the cosine rule for this - you might have to change some of the letters around for it to make sense though. Hope this helps!
The square root of 5 is 2
Answer:
13/20 = 65%
Step-by-step explanation:
1/4 = 25%
7/10 = 70%
13/20 = 65%
Only the last one had the correct percentage.