Answer:
You now this question state why a person standing at point Y hears an echo
Answer:
If one cup falls down then there will be 59 cups left.
Answer:
reacts with metals: acid
reacts with nonmetal: base
taste sour: acid
can cause burns: both
conduct electricity: both
taste bitter: base
Answer:
3 units
Solution:
V=539 cubic units
Square base, with edge a=7 units
Slanted edge length: s=14 units
V=Ab h
Ab=49 square units
539 cubic units = (49 square units) h
h= 11 units
s-h=14 units-11 units
s-h=3 units
