Answer:
None.
Step-by-step explanation:
6x-20=32
6(8)-20=48-20=28, not 32
--------------------------------------
16-x=12
16-8=8, not 12
--------------------
20-0.4x=13.8
20-0.4(8)=20-3.2=16.8, not 13.8
------------------------------------------------
1x+12=30
x+12=30
8+12=20, not 30
Volume of a sphere:
(4/3)(pi)r^3
.
radius (r) is half the diameter or 8 inches.
(4/3)(3.14)8^3
2144 cubic inches
Answer:
1) -9
2) 10
3) -2
4) 9
Step-by-step explanation:
Simple mathematics
Note: -(- is a plus symbol, it also makes a + symbol as well...
It will be 30 also because they are congruent to each other's hope this helps good luck